var lime =
/******/ (function(modules) { // webpackBootstrap
/******/ // The module cache
/******/ var installedModules = {};
/******/
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/
/******/ // Check if module is in cache
/******/ if(installedModules[moduleId])
/******/ return installedModules[moduleId].exports;
/******/
/******/ // Create a new module (and put it into the cache)
/******/ var module = installedModules[moduleId] = {
/******/ exports: {},
/******/ id: moduleId,
/******/ loaded: false
/******/ };
/******/
/******/ // Execute the module function
/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/ // Flag the module as loaded
/******/ module.loaded = true;
/******/
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/
/******/
/******/ // expose the modules object (__webpack_modules__)
/******/ __webpack_require__.m = modules;
/******/
/******/ // expose the module cache
/******/ __webpack_require__.c = installedModules;
/******/
/******/ // __webpack_public_path__
/******/ __webpack_require__.p = "";
/******/
/******/ // Load entry module and return exports
/******/ return __webpack_require__(0);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __webpack_require__) {
/* WEBPACK VAR INJECTION */(function(global) {'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.PredictedValue = exports.PredictProba = exports.Barchart = exports.Explanation = undefined;
var _explanation = __webpack_require__(1);
var _explanation2 = _interopRequireDefault(_explanation);
var _bar_chart = __webpack_require__(3);
var _bar_chart2 = _interopRequireDefault(_bar_chart);
var _predict_proba = __webpack_require__(6);
var _predict_proba2 = _interopRequireDefault(_predict_proba);
var _predicted_value = __webpack_require__(7);
var _predicted_value2 = _interopRequireDefault(_predicted_value);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
if (!global._babelPolyfill) {
__webpack_require__(8);
}
__webpack_require__(339);
exports.Explanation = _explanation2.default;
exports.Barchart = _bar_chart2.default;
exports.PredictProba = _predict_proba2.default;
exports.PredictedValue = _predicted_value2.default;
//require('style-loader');
/* WEBPACK VAR INJECTION */}.call(exports, (function() { return this; }())))
/***/ }),
/* 1 */
/***/ (function(module, exports, __webpack_require__) {
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();
var _d2 = __webpack_require__(2);
var _d3 = _interopRequireDefault(_d2);
var _bar_chart = __webpack_require__(3);
var _bar_chart2 = _interopRequireDefault(_bar_chart);
var _lodash = __webpack_require__(4);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var Explanation = function () {
function Explanation(class_names) {
_classCallCheck(this, Explanation);
this.names = class_names;
if (class_names.length < 10) {
this.colors = _d3.default.scale.category10().domain(this.names);
this.colors_i = _d3.default.scale.category10().domain((0, _lodash.range)(this.names.length));
} else {
this.colors = _d3.default.scale.category20().domain(this.names);
this.colors_i = _d3.default.scale.category20().domain((0, _lodash.range)(this.names.length));
}
}
// exp: [(feature-name, weight), ...]
// label: int
// div: d3 selection
Explanation.prototype.show = function show(exp, label, div) {
var svg = div.append('svg').style('width', '100%');
var colors = ['#5F9EA0', this.colors_i(label)];
var names = ['NOT ' + this.names[label], this.names[label]];
if (this.names.length == 2) {
colors = [this.colors_i(0), this.colors_i(1)];
names = this.names;
}
var plot = new _bar_chart2.default(svg, exp, true, names, colors, true, 10);
svg.style('height', plot.svg_height + 'px');
};
// exp has all ocurrences of words, with start index and weight:
// exp = [('word', 132, -0.13), ('word3', 111, 1.3)
Explanation.prototype.show_raw_text = function show_raw_text(exp, label, raw, div) {
var opacity = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : true;
//let colors=['#5F9EA0', this.colors(this.exp['class'])];
var colors = ['#5F9EA0', this.colors_i(label)];
if (this.names.length == 2) {
colors = [this.colors_i(0), this.colors_i(1)];
}
var word_lists = [[], []];
var max_weight = -1;
var _iteratorNormalCompletion = true;
var _didIteratorError = false;
var _iteratorError = undefined;
try {
for (var _iterator = exp[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
var _step$value = _slicedToArray(_step.value, 3),
word = _step$value[0],
start = _step$value[1],
weight = _step$value[2];
if (weight > 0) {
word_lists[1].push([start, start + word.length, weight]);
} else {
word_lists[0].push([start, start + word.length, -weight]);
}
max_weight = Math.max(max_weight, Math.abs(weight));
}
} catch (err) {
_didIteratorError = true;
_iteratorError = err;
} finally {
try {
if (!_iteratorNormalCompletion && _iterator.return) {
_iterator.return();
}
} finally {
if (_didIteratorError) {
throw _iteratorError;
}
}
}
if (!opacity) {
max_weight = 0;
}
this.display_raw_text(div, raw, word_lists, colors, max_weight, true);
};
// exp is list of (feature_name, value, weight)
Explanation.prototype.show_raw_tabular = function show_raw_tabular(exp, label, div) {
div.classed('lime', true).classed('table_div', true);
var colors = ['#5F9EA0', this.colors_i(label)];
if (this.names.length == 2) {
colors = [this.colors_i(0), this.colors_i(1)];
}
var table = div.append('table');
var thead = table.append('tr');
thead.append('td').text('Feature');
thead.append('td').text('Value');
thead.style('color', 'black').style('font-size', '20px');
var _iteratorNormalCompletion2 = true;
var _didIteratorError2 = false;
var _iteratorError2 = undefined;
try {
for (var _iterator2 = exp[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {
var _step2$value = _slicedToArray(_step2.value, 3),
fname = _step2$value[0],
value = _step2$value[1],
weight = _step2$value[2];
var tr = table.append('tr');
tr.style('border-style', 'hidden');
tr.append('td').text(fname);
tr.append('td').text(value);
if (weight > 0) {
tr.style('background-color', colors[1]);
} else if (weight < 0) {
tr.style('background-color', colors[0]);
} else {
tr.style('color', 'black');
}
}
} catch (err) {
_didIteratorError2 = true;
_iteratorError2 = err;
} finally {
try {
if (!_iteratorNormalCompletion2 && _iterator2.return) {
_iterator2.return();
}
} finally {
if (_didIteratorError2) {
throw _iteratorError2;
}
}
}
};
Explanation.prototype.hexToRgb = function hexToRgb(hex) {
var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
return result ? {
r: parseInt(result[1], 16),
g: parseInt(result[2], 16),
b: parseInt(result[3], 16)
} : null;
};
Explanation.prototype.applyAlpha = function applyAlpha(hex, alpha) {
var components = this.hexToRgb(hex);
return 'rgba(' + components.r + "," + components.g + "," + components.b + "," + alpha.toFixed(3) + ")";
};
// sord_lists is an array of arrays, of length (colors). if with_positions is true,
// word_lists is an array of [start,end] positions instead
Explanation.prototype.display_raw_text = function display_raw_text(div, raw_text) {
var word_lists = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : [];
var colors = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : [];
var max_weight = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 1;
var positions = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : false;
div.classed('lime', true).classed('text_div', true);
div.append('h3').text('Text with highlighted words');
var highlight_tag = 'span';
var text_span = div.append('span').style('white-space', 'pre-wrap').text(raw_text);
var position_lists = word_lists;
if (!positions) {
position_lists = this.wordlists_to_positions(word_lists, raw_text);
}
var objects = [];
var _iteratorNormalCompletion3 = true;
var _didIteratorError3 = false;
var _iteratorError3 = undefined;
try {
var _loop = function _loop() {
var i = _step3.value;
position_lists[i].map(function (x) {
return objects.push({ 'label': i, 'start': x[0], 'end': x[1], 'alpha': max_weight === 0 ? 1 : x[2] / max_weight });
});
};
for (var _iterator3 = (0, _lodash.range)(position_lists.length)[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {
_loop();
}
} catch (err) {
_didIteratorError3 = true;
_iteratorError3 = err;
} finally {
try {
if (!_iteratorNormalCompletion3 && _iterator3.return) {
_iterator3.return();
}
} finally {
if (_didIteratorError3) {
throw _iteratorError3;
}
}
}
objects = (0, _lodash.sortBy)(objects, function (x) {
return x['start'];
});
var node = text_span.node().childNodes[0];
var subtract = 0;
var _iteratorNormalCompletion4 = true;
var _didIteratorError4 = false;
var _iteratorError4 = undefined;
try {
for (var _iterator4 = objects[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {
var obj = _step4.value;
var word = raw_text.slice(obj.start, obj.end);
var start = obj.start - subtract;
var end = obj.end - subtract;
var match = document.createElement(highlight_tag);
match.appendChild(document.createTextNode(word));
match.style.backgroundColor = this.applyAlpha(colors[obj.label], obj.alpha);
var after = node.splitText(start);
after.nodeValue = after.nodeValue.substring(word.length);
node.parentNode.insertBefore(match, after);
subtract += end;
node = after;
}
} catch (err) {
_didIteratorError4 = true;
_iteratorError4 = err;
} finally {
try {
if (!_iteratorNormalCompletion4 && _iterator4.return) {
_iterator4.return();
}
} finally {
if (_didIteratorError4) {
throw _iteratorError4;
}
}
}
};
Explanation.prototype.wordlists_to_positions = function wordlists_to_positions(word_lists, raw_text) {
var ret = [];
var _iteratorNormalCompletion5 = true;
var _didIteratorError5 = false;
var _iteratorError5 = undefined;
try {
for (var _iterator5 = word_lists[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {
var words = _step5.value;
if (words.length === 0) {
ret.push([]);
continue;
}
var re = new RegExp("\\b(" + words.join('|') + ")\\b", 'gm');
var temp = void 0;
var list = [];
while ((temp = re.exec(raw_text)) !== null) {
list.push([temp.index, temp.index + temp[0].length]);
}
ret.push(list);
}
} catch (err) {
_didIteratorError5 = true;
_iteratorError5 = err;
} finally {
try {
if (!_iteratorNormalCompletion5 && _iterator5.return) {
_iterator5.return();
}
} finally {
if (_didIteratorError5) {
throw _iteratorError5;
}
}
}
return ret;
};
return Explanation;
}();
exports.default = Explanation;
/***/ }),
/* 2 */
/***/ (function(module, exports, __webpack_require__) {
var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_RESULT__;!function() {
var d3 = {
version: "3.5.17"
};
var d3_arraySlice = [].slice, d3_array = function(list) {
return d3_arraySlice.call(list);
};
var d3_document = this.document;
function d3_documentElement(node) {
return node && (node.ownerDocument || node.document || node).documentElement;
}
function d3_window(node) {
return node && (node.ownerDocument && node.ownerDocument.defaultView || node.document && node || node.defaultView);
}
if (d3_document) {
try {
d3_array(d3_document.documentElement.childNodes)[0].nodeType;
} catch (e) {
d3_array = function(list) {
var i = list.length, array = new Array(i);
while (i--) array[i] = list[i];
return array;
};
}
}
if (!Date.now) Date.now = function() {
return +new Date();
};
if (d3_document) {
try {
d3_document.createElement("DIV").style.setProperty("opacity", 0, "");
} catch (error) {
var d3_element_prototype = this.Element.prototype, d3_element_setAttribute = d3_element_prototype.setAttribute, d3_element_setAttributeNS = d3_element_prototype.setAttributeNS, d3_style_prototype = this.CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
d3_element_prototype.setAttribute = function(name, value) {
d3_element_setAttribute.call(this, name, value + "");
};
d3_element_prototype.setAttributeNS = function(space, local, value) {
d3_element_setAttributeNS.call(this, space, local, value + "");
};
d3_style_prototype.setProperty = function(name, value, priority) {
d3_style_setProperty.call(this, name, value + "", priority);
};
}
}
d3.ascending = d3_ascending;
function d3_ascending(a, b) {
return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
}
d3.descending = function(a, b) {
return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
};
d3.min = function(array, f) {
var i = -1, n = array.length, a, b;
if (arguments.length === 1) {
while (++i < n) if ((b = array[i]) != null && b >= b) {
a = b;
break;
}
while (++i < n) if ((b = array[i]) != null && a > b) a = b;
} else {
while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
a = b;
break;
}
while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
}
return a;
};
d3.max = function(array, f) {
var i = -1, n = array.length, a, b;
if (arguments.length === 1) {
while (++i < n) if ((b = array[i]) != null && b >= b) {
a = b;
break;
}
while (++i < n) if ((b = array[i]) != null && b > a) a = b;
} else {
while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
a = b;
break;
}
while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
}
return a;
};
d3.extent = function(array, f) {
var i = -1, n = array.length, a, b, c;
if (arguments.length === 1) {
while (++i < n) if ((b = array[i]) != null && b >= b) {
a = c = b;
break;
}
while (++i < n) if ((b = array[i]) != null) {
if (a > b) a = b;
if (c < b) c = b;
}
} else {
while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
a = c = b;
break;
}
while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
if (a > b) a = b;
if (c < b) c = b;
}
}
return [ a, c ];
};
function d3_number(x) {
return x === null ? NaN : +x;
}
function d3_numeric(x) {
return !isNaN(x);
}
d3.sum = function(array, f) {
var s = 0, n = array.length, a, i = -1;
if (arguments.length === 1) {
while (++i < n) if (d3_numeric(a = +array[i])) s += a;
} else {
while (++i < n) if (d3_numeric(a = +f.call(array, array[i], i))) s += a;
}
return s;
};
d3.mean = function(array, f) {
var s = 0, n = array.length, a, i = -1, j = n;
if (arguments.length === 1) {
while (++i < n) if (d3_numeric(a = d3_number(array[i]))) s += a; else --j;
} else {
while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) s += a; else --j;
}
if (j) return s / j;
};
d3.quantile = function(values, p) {
var H = (values.length - 1) * p + 1, h = Math.floor(H), v = +values[h - 1], e = H - h;
return e ? v + e * (values[h] - v) : v;
};
d3.median = function(array, f) {
var numbers = [], n = array.length, a, i = -1;
if (arguments.length === 1) {
while (++i < n) if (d3_numeric(a = d3_number(array[i]))) numbers.push(a);
} else {
while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) numbers.push(a);
}
if (numbers.length) return d3.quantile(numbers.sort(d3_ascending), .5);
};
d3.variance = function(array, f) {
var n = array.length, m = 0, a, d, s = 0, i = -1, j = 0;
if (arguments.length === 1) {
while (++i < n) {
if (d3_numeric(a = d3_number(array[i]))) {
d = a - m;
m += d / ++j;
s += d * (a - m);
}
}
} else {
while (++i < n) {
if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) {
d = a - m;
m += d / ++j;
s += d * (a - m);
}
}
}
if (j > 1) return s / (j - 1);
};
d3.deviation = function() {
var v = d3.variance.apply(this, arguments);
return v ? Math.sqrt(v) : v;
};
function d3_bisector(compare) {
return {
left: function(a, x, lo, hi) {
if (arguments.length < 3) lo = 0;
if (arguments.length < 4) hi = a.length;
while (lo < hi) {
var mid = lo + hi >>> 1;
if (compare(a[mid], x) < 0) lo = mid + 1; else hi = mid;
}
return lo;
},
right: function(a, x, lo, hi) {
if (arguments.length < 3) lo = 0;
if (arguments.length < 4) hi = a.length;
while (lo < hi) {
var mid = lo + hi >>> 1;
if (compare(a[mid], x) > 0) hi = mid; else lo = mid + 1;
}
return lo;
}
};
}
var d3_bisect = d3_bisector(d3_ascending);
d3.bisectLeft = d3_bisect.left;
d3.bisect = d3.bisectRight = d3_bisect.right;
d3.bisector = function(f) {
return d3_bisector(f.length === 1 ? function(d, x) {
return d3_ascending(f(d), x);
} : f);
};
d3.shuffle = function(array, i0, i1) {
if ((m = arguments.length) < 3) {
i1 = array.length;
if (m < 2) i0 = 0;
}
var m = i1 - i0, t, i;
while (m) {
i = Math.random() * m-- | 0;
t = array[m + i0], array[m + i0] = array[i + i0], array[i + i0] = t;
}
return array;
};
d3.permute = function(array, indexes) {
var i = indexes.length, permutes = new Array(i);
while (i--) permutes[i] = array[indexes[i]];
return permutes;
};
d3.pairs = function(array) {
var i = 0, n = array.length - 1, p0, p1 = array[0], pairs = new Array(n < 0 ? 0 : n);
while (i < n) pairs[i] = [ p0 = p1, p1 = array[++i] ];
return pairs;
};
d3.transpose = function(matrix) {
if (!(n = matrix.length)) return [];
for (var i = -1, m = d3.min(matrix, d3_transposeLength), transpose = new Array(m); ++i < m; ) {
for (var j = -1, n, row = transpose[i] = new Array(n); ++j < n; ) {
row[j] = matrix[j][i];
}
}
return transpose;
};
function d3_transposeLength(d) {
return d.length;
}
d3.zip = function() {
return d3.transpose(arguments);
};
d3.keys = function(map) {
var keys = [];
for (var key in map) keys.push(key);
return keys;
};
d3.values = function(map) {
var values = [];
for (var key in map) values.push(map[key]);
return values;
};
d3.entries = function(map) {
var entries = [];
for (var key in map) entries.push({
key: key,
value: map[key]
});
return entries;
};
d3.merge = function(arrays) {
var n = arrays.length, m, i = -1, j = 0, merged, array;
while (++i < n) j += arrays[i].length;
merged = new Array(j);
while (--n >= 0) {
array = arrays[n];
m = array.length;
while (--m >= 0) {
merged[--j] = array[m];
}
}
return merged;
};
var abs = Math.abs;
d3.range = function(start, stop, step) {
if (arguments.length < 3) {
step = 1;
if (arguments.length < 2) {
stop = start;
start = 0;
}
}
if ((stop - start) / step === Infinity) throw new Error("infinite range");
var range = [], k = d3_range_integerScale(abs(step)), i = -1, j;
start *= k, stop *= k, step *= k;
if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); else while ((j = start + step * ++i) < stop) range.push(j / k);
return range;
};
function d3_range_integerScale(x) {
var k = 1;
while (x * k % 1) k *= 10;
return k;
}
function d3_class(ctor, properties) {
for (var key in properties) {
Object.defineProperty(ctor.prototype, key, {
value: properties[key],
enumerable: false
});
}
}
d3.map = function(object, f) {
var map = new d3_Map();
if (object instanceof d3_Map) {
object.forEach(function(key, value) {
map.set(key, value);
});
} else if (Array.isArray(object)) {
var i = -1, n = object.length, o;
if (arguments.length === 1) while (++i < n) map.set(i, object[i]); else while (++i < n) map.set(f.call(object, o = object[i], i), o);
} else {
for (var key in object) map.set(key, object[key]);
}
return map;
};
function d3_Map() {
this._ = Object.create(null);
}
var d3_map_proto = "__proto__", d3_map_zero = "\x00";
d3_class(d3_Map, {
has: d3_map_has,
get: function(key) {
return this._[d3_map_escape(key)];
},
set: function(key, value) {
return this._[d3_map_escape(key)] = value;
},
remove: d3_map_remove,
keys: d3_map_keys,
values: function() {
var values = [];
for (var key in this._) values.push(this._[key]);
return values;
},
entries: function() {
var entries = [];
for (var key in this._) entries.push({
key: d3_map_unescape(key),
value: this._[key]
});
return entries;
},
size: d3_map_size,
empty: d3_map_empty,
forEach: function(f) {
for (var key in this._) f.call(this, d3_map_unescape(key), this._[key]);
}
});
function d3_map_escape(key) {
return (key += "") === d3_map_proto || key[0] === d3_map_zero ? d3_map_zero + key : key;
}
function d3_map_unescape(key) {
return (key += "")[0] === d3_map_zero ? key.slice(1) : key;
}
function d3_map_has(key) {
return d3_map_escape(key) in this._;
}
function d3_map_remove(key) {
return (key = d3_map_escape(key)) in this._ && delete this._[key];
}
function d3_map_keys() {
var keys = [];
for (var key in this._) keys.push(d3_map_unescape(key));
return keys;
}
function d3_map_size() {
var size = 0;
for (var key in this._) ++size;
return size;
}
function d3_map_empty() {
for (var key in this._) return false;
return true;
}
d3.nest = function() {
var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
function map(mapType, array, depth) {
if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
var i = -1, n = array.length, key = keys[depth++], keyValue, object, setter, valuesByKey = new d3_Map(), values;
while (++i < n) {
if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
values.push(object);
} else {
valuesByKey.set(keyValue, [ object ]);
}
}
if (mapType) {
object = mapType();
setter = function(keyValue, values) {
object.set(keyValue, map(mapType, values, depth));
};
} else {
object = {};
setter = function(keyValue, values) {
object[keyValue] = map(mapType, values, depth);
};
}
valuesByKey.forEach(setter);
return object;
}
function entries(map, depth) {
if (depth >= keys.length) return map;
var array = [], sortKey = sortKeys[depth++];
map.forEach(function(key, keyMap) {
array.push({
key: key,
values: entries(keyMap, depth)
});
});
return sortKey ? array.sort(function(a, b) {
return sortKey(a.key, b.key);
}) : array;
}
nest.map = function(array, mapType) {
return map(mapType, array, 0);
};
nest.entries = function(array) {
return entries(map(d3.map, array, 0), 0);
};
nest.key = function(d) {
keys.push(d);
return nest;
};
nest.sortKeys = function(order) {
sortKeys[keys.length - 1] = order;
return nest;
};
nest.sortValues = function(order) {
sortValues = order;
return nest;
};
nest.rollup = function(f) {
rollup = f;
return nest;
};
return nest;
};
d3.set = function(array) {
var set = new d3_Set();
if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
return set;
};
function d3_Set() {
this._ = Object.create(null);
}
d3_class(d3_Set, {
has: d3_map_has,
add: function(key) {
this._[d3_map_escape(key += "")] = true;
return key;
},
remove: d3_map_remove,
values: d3_map_keys,
size: d3_map_size,
empty: d3_map_empty,
forEach: function(f) {
for (var key in this._) f.call(this, d3_map_unescape(key));
}
});
d3.behavior = {};
function d3_identity(d) {
return d;
}
d3.rebind = function(target, source) {
var i = 1, n = arguments.length, method;
while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
return target;
};
function d3_rebind(target, source, method) {
return function() {
var value = method.apply(source, arguments);
return value === source ? target : value;
};
}
function d3_vendorSymbol(object, name) {
if (name in object) return name;
name = name.charAt(0).toUpperCase() + name.slice(1);
for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) {
var prefixName = d3_vendorPrefixes[i] + name;
if (prefixName in object) return prefixName;
}
}
var d3_vendorPrefixes = [ "webkit", "ms", "moz", "Moz", "o", "O" ];
function d3_noop() {}
d3.dispatch = function() {
var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
return dispatch;
};
function d3_dispatch() {}
d3_dispatch.prototype.on = function(type, listener) {
var i = type.indexOf("."), name = "";
if (i >= 0) {
name = type.slice(i + 1);
type = type.slice(0, i);
}
if (type) return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
if (arguments.length === 2) {
if (listener == null) for (type in this) {
if (this.hasOwnProperty(type)) this[type].on(name, null);
}
return this;
}
};
function d3_dispatch_event(dispatch) {
var listeners = [], listenerByName = new d3_Map();
function event() {
var z = listeners, i = -1, n = z.length, l;
while (++i < n) if (l = z[i].on) l.apply(this, arguments);
return dispatch;
}
event.on = function(name, listener) {
var l = listenerByName.get(name), i;
if (arguments.length < 2) return l && l.on;
if (l) {
l.on = null;
listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
listenerByName.remove(name);
}
if (listener) listeners.push(listenerByName.set(name, {
on: listener
}));
return dispatch;
};
return event;
}
d3.event = null;
function d3_eventPreventDefault() {
d3.event.preventDefault();
}
function d3_eventSource() {
var e = d3.event, s;
while (s = e.sourceEvent) e = s;
return e;
}
function d3_eventDispatch(target) {
var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
dispatch.of = function(thiz, argumentz) {
return function(e1) {
try {
var e0 = e1.sourceEvent = d3.event;
e1.target = target;
d3.event = e1;
dispatch[e1.type].apply(thiz, argumentz);
} finally {
d3.event = e0;
}
};
};
return dispatch;
}
d3.requote = function(s) {
return s.replace(d3_requote_re, "\\$&");
};
var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
var d3_subclass = {}.__proto__ ? function(object, prototype) {
object.__proto__ = prototype;
} : function(object, prototype) {
for (var property in prototype) object[property] = prototype[property];
};
function d3_selection(groups) {
d3_subclass(groups, d3_selectionPrototype);
return groups;
}
var d3_select = function(s, n) {
return n.querySelector(s);
}, d3_selectAll = function(s, n) {
return n.querySelectorAll(s);
}, d3_selectMatches = function(n, s) {
var d3_selectMatcher = n.matches || n[d3_vendorSymbol(n, "matchesSelector")];
d3_selectMatches = function(n, s) {
return d3_selectMatcher.call(n, s);
};
return d3_selectMatches(n, s);
};
if (typeof Sizzle === "function") {
d3_select = function(s, n) {
return Sizzle(s, n)[0] || null;
};
d3_selectAll = Sizzle;
d3_selectMatches = Sizzle.matchesSelector;
}
d3.selection = function() {
return d3.select(d3_document.documentElement);
};
var d3_selectionPrototype = d3.selection.prototype = [];
d3_selectionPrototype.select = function(selector) {
var subgroups = [], subgroup, subnode, group, node;
selector = d3_selection_selector(selector);
for (var j = -1, m = this.length; ++j < m; ) {
subgroups.push(subgroup = []);
subgroup.parentNode = (group = this[j]).parentNode;
for (var i = -1, n = group.length; ++i < n; ) {
if (node = group[i]) {
subgroup.push(subnode = selector.call(node, node.__data__, i, j));
if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
} else {
subgroup.push(null);
}
}
}
return d3_selection(subgroups);
};
function d3_selection_selector(selector) {
return typeof selector === "function" ? selector : function() {
return d3_select(selector, this);
};
}
d3_selectionPrototype.selectAll = function(selector) {
var subgroups = [], subgroup, node;
selector = d3_selection_selectorAll(selector);
for (var j = -1, m = this.length; ++j < m; ) {
for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
if (node = group[i]) {
subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j)));
subgroup.parentNode = node;
}
}
}
return d3_selection(subgroups);
};
function d3_selection_selectorAll(selector) {
return typeof selector === "function" ? selector : function() {
return d3_selectAll(selector, this);
};
}
var d3_nsXhtml = "http://www.w3.org/1999/xhtml";
var d3_nsPrefix = {
svg: "http://www.w3.org/2000/svg",
xhtml: d3_nsXhtml,
xlink: "http://www.w3.org/1999/xlink",
xml: "http://www.w3.org/XML/1998/namespace",
xmlns: "http://www.w3.org/2000/xmlns/"
};
d3.ns = {
prefix: d3_nsPrefix,
qualify: function(name) {
var i = name.indexOf(":"), prefix = name;
if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1);
return d3_nsPrefix.hasOwnProperty(prefix) ? {
space: d3_nsPrefix[prefix],
local: name
} : name;
}
};
d3_selectionPrototype.attr = function(name, value) {
if (arguments.length < 2) {
if (typeof name === "string") {
var node = this.node();
name = d3.ns.qualify(name);
return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
}
for (value in name) this.each(d3_selection_attr(value, name[value]));
return this;
}
return this.each(d3_selection_attr(name, value));
};
function d3_selection_attr(name, value) {
name = d3.ns.qualify(name);
function attrNull() {
this.removeAttribute(name);
}
function attrNullNS() {
this.removeAttributeNS(name.space, name.local);
}
function attrConstant() {
this.setAttribute(name, value);
}
function attrConstantNS() {
this.setAttributeNS(name.space, name.local, value);
}
function attrFunction() {
var x = value.apply(this, arguments);
if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
}
function attrFunctionNS() {
var x = value.apply(this, arguments);
if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
}
return value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant;
}
function d3_collapse(s) {
return s.trim().replace(/\s+/g, " ");
}
d3_selectionPrototype.classed = function(name, value) {
if (arguments.length < 2) {
if (typeof name === "string") {
var node = this.node(), n = (name = d3_selection_classes(name)).length, i = -1;
if (value = node.classList) {
while (++i < n) if (!value.contains(name[i])) return false;
} else {
value = node.getAttribute("class");
while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
}
return true;
}
for (value in name) this.each(d3_selection_classed(value, name[value]));
return this;
}
return this.each(d3_selection_classed(name, value));
};
function d3_selection_classedRe(name) {
return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
}
function d3_selection_classes(name) {
return (name + "").trim().split(/^|\s+/);
}
function d3_selection_classed(name, value) {
name = d3_selection_classes(name).map(d3_selection_classedName);
var n = name.length;
function classedConstant() {
var i = -1;
while (++i < n) name[i](this, value);
}
function classedFunction() {
var i = -1, x = value.apply(this, arguments);
while (++i < n) name[i](this, x);
}
return typeof value === "function" ? classedFunction : classedConstant;
}
function d3_selection_classedName(name) {
var re = d3_selection_classedRe(name);
return function(node, value) {
if (c = node.classList) return value ? c.add(name) : c.remove(name);
var c = node.getAttribute("class") || "";
if (value) {
re.lastIndex = 0;
if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name));
} else {
node.setAttribute("class", d3_collapse(c.replace(re, " ")));
}
};
}
d3_selectionPrototype.style = function(name, value, priority) {
var n = arguments.length;
if (n < 3) {
if (typeof name !== "string") {
if (n < 2) value = "";
for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
return this;
}
if (n < 2) {
var node = this.node();
return d3_window(node).getComputedStyle(node, null).getPropertyValue(name);
}
priority = "";
}
return this.each(d3_selection_style(name, value, priority));
};
function d3_selection_style(name, value, priority) {
function styleNull() {
this.style.removeProperty(name);
}
function styleConstant() {
this.style.setProperty(name, value, priority);
}
function styleFunction() {
var x = value.apply(this, arguments);
if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
}
return value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant;
}
d3_selectionPrototype.property = function(name, value) {
if (arguments.length < 2) {
if (typeof name === "string") return this.node()[name];
for (value in name) this.each(d3_selection_property(value, name[value]));
return this;
}
return this.each(d3_selection_property(name, value));
};
function d3_selection_property(name, value) {
function propertyNull() {
delete this[name];
}
function propertyConstant() {
this[name] = value;
}
function propertyFunction() {
var x = value.apply(this, arguments);
if (x == null) delete this[name]; else this[name] = x;
}
return value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant;
}
d3_selectionPrototype.text = function(value) {
return arguments.length ? this.each(typeof value === "function" ? function() {
var v = value.apply(this, arguments);
this.textContent = v == null ? "" : v;
} : value == null ? function() {
this.textContent = "";
} : function() {
this.textContent = value;
}) : this.node().textContent;
};
d3_selectionPrototype.html = function(value) {
return arguments.length ? this.each(typeof value === "function" ? function() {
var v = value.apply(this, arguments);
this.innerHTML = v == null ? "" : v;
} : value == null ? function() {
this.innerHTML = "";
} : function() {
this.innerHTML = value;
}) : this.node().innerHTML;
};
d3_selectionPrototype.append = function(name) {
name = d3_selection_creator(name);
return this.select(function() {
return this.appendChild(name.apply(this, arguments));
});
};
function d3_selection_creator(name) {
function create() {
var document = this.ownerDocument, namespace = this.namespaceURI;
return namespace === d3_nsXhtml && document.documentElement.namespaceURI === d3_nsXhtml ? document.createElement(name) : document.createElementNS(namespace, name);
}
function createNS() {
return this.ownerDocument.createElementNS(name.space, name.local);
}
return typeof name === "function" ? name : (name = d3.ns.qualify(name)).local ? createNS : create;
}
d3_selectionPrototype.insert = function(name, before) {
name = d3_selection_creator(name);
before = d3_selection_selector(before);
return this.select(function() {
return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null);
});
};
d3_selectionPrototype.remove = function() {
return this.each(d3_selectionRemove);
};
function d3_selectionRemove() {
var parent = this.parentNode;
if (parent) parent.removeChild(this);
}
d3_selectionPrototype.data = function(value, key) {
var i = -1, n = this.length, group, node;
if (!arguments.length) {
value = new Array(n = (group = this[0]).length);
while (++i < n) {
if (node = group[i]) {
value[i] = node.__data__;
}
}
return value;
}
function bind(group, groupData) {
var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
if (key) {
var nodeByKeyValue = new d3_Map(), keyValues = new Array(n), keyValue;
for (i = -1; ++i < n; ) {
if (node = group[i]) {
if (nodeByKeyValue.has(keyValue = key.call(node, node.__data__, i))) {
exitNodes[i] = node;
} else {
nodeByKeyValue.set(keyValue, node);
}
keyValues[i] = keyValue;
}
}
for (i = -1; ++i < m; ) {
if (!(node = nodeByKeyValue.get(keyValue = key.call(groupData, nodeData = groupData[i], i)))) {
enterNodes[i] = d3_selection_dataNode(nodeData);
} else if (node !== true) {
updateNodes[i] = node;
node.__data__ = nodeData;
}
nodeByKeyValue.set(keyValue, true);
}
for (i = -1; ++i < n; ) {
if (i in keyValues && nodeByKeyValue.get(keyValues[i]) !== true) {
exitNodes[i] = group[i];
}
}
} else {
for (i = -1; ++i < n0; ) {
node = group[i];
nodeData = groupData[i];
if (node) {
node.__data__ = nodeData;
updateNodes[i] = node;
} else {
enterNodes[i] = d3_selection_dataNode(nodeData);
}
}
for (;i < m; ++i) {
enterNodes[i] = d3_selection_dataNode(groupData[i]);
}
for (;i < n; ++i) {
exitNodes[i] = group[i];
}
}
enterNodes.update = updateNodes;
enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
enter.push(enterNodes);
update.push(updateNodes);
exit.push(exitNodes);
}
var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
if (typeof value === "function") {
while (++i < n) {
bind(group = this[i], value.call(group, group.parentNode.__data__, i));
}
} else {
while (++i < n) {
bind(group = this[i], value);
}
}
update.enter = function() {
return enter;
};
update.exit = function() {
return exit;
};
return update;
};
function d3_selection_dataNode(data) {
return {
__data__: data
};
}
d3_selectionPrototype.datum = function(value) {
return arguments.length ? this.property("__data__", value) : this.property("__data__");
};
d3_selectionPrototype.filter = function(filter) {
var subgroups = [], subgroup, group, node;
if (typeof filter !== "function") filter = d3_selection_filter(filter);
for (var j = 0, m = this.length; j < m; j++) {
subgroups.push(subgroup = []);
subgroup.parentNode = (group = this[j]).parentNode;
for (var i = 0, n = group.length; i < n; i++) {
if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
subgroup.push(node);
}
}
}
return d3_selection(subgroups);
};
function d3_selection_filter(selector) {
return function() {
return d3_selectMatches(this, selector);
};
}
d3_selectionPrototype.order = function() {
for (var j = -1, m = this.length; ++j < m; ) {
for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0; ) {
if (node = group[i]) {
if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
next = node;
}
}
}
return this;
};
d3_selectionPrototype.sort = function(comparator) {
comparator = d3_selection_sortComparator.apply(this, arguments);
for (var j = -1, m = this.length; ++j < m; ) this[j].sort(comparator);
return this.order();
};
function d3_selection_sortComparator(comparator) {
if (!arguments.length) comparator = d3_ascending;
return function(a, b) {
return a && b ? comparator(a.__data__, b.__data__) : !a - !b;
};
}
d3_selectionPrototype.each = function(callback) {
return d3_selection_each(this, function(node, i, j) {
callback.call(node, node.__data__, i, j);
});
};
function d3_selection_each(groups, callback) {
for (var j = 0, m = groups.length; j < m; j++) {
for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
if (node = group[i]) callback(node, i, j);
}
}
return groups;
}
d3_selectionPrototype.call = function(callback) {
var args = d3_array(arguments);
callback.apply(args[0] = this, args);
return this;
};
d3_selectionPrototype.empty = function() {
return !this.node();
};
d3_selectionPrototype.node = function() {
for (var j = 0, m = this.length; j < m; j++) {
for (var group = this[j], i = 0, n = group.length; i < n; i++) {
var node = group[i];
if (node) return node;
}
}
return null;
};
d3_selectionPrototype.size = function() {
var n = 0;
d3_selection_each(this, function() {
++n;
});
return n;
};
function d3_selection_enter(selection) {
d3_subclass(selection, d3_selection_enterPrototype);
return selection;
}
var d3_selection_enterPrototype = [];
d3.selection.enter = d3_selection_enter;
d3.selection.enter.prototype = d3_selection_enterPrototype;
d3_selection_enterPrototype.append = d3_selectionPrototype.append;
d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
d3_selection_enterPrototype.node = d3_selectionPrototype.node;
d3_selection_enterPrototype.call = d3_selectionPrototype.call;
d3_selection_enterPrototype.size = d3_selectionPrototype.size;
d3_selection_enterPrototype.select = function(selector) {
var subgroups = [], subgroup, subnode, upgroup, group, node;
for (var j = -1, m = this.length; ++j < m; ) {
upgroup = (group = this[j]).update;
subgroups.push(subgroup = []);
subgroup.parentNode = group.parentNode;
for (var i = -1, n = group.length; ++i < n; ) {
if (node = group[i]) {
subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i, j));
subnode.__data__ = node.__data__;
} else {
subgroup.push(null);
}
}
}
return d3_selection(subgroups);
};
d3_selection_enterPrototype.insert = function(name, before) {
if (arguments.length < 2) before = d3_selection_enterInsertBefore(this);
return d3_selectionPrototype.insert.call(this, name, before);
};
function d3_selection_enterInsertBefore(enter) {
var i0, j0;
return function(d, i, j) {
var group = enter[j].update, n = group.length, node;
if (j != j0) j0 = j, i0 = 0;
if (i >= i0) i0 = i + 1;
while (!(node = group[i0]) && ++i0 < n) ;
return node;
};
}
d3.select = function(node) {
var group;
if (typeof node === "string") {
group = [ d3_select(node, d3_document) ];
group.parentNode = d3_document.documentElement;
} else {
group = [ node ];
group.parentNode = d3_documentElement(node);
}
return d3_selection([ group ]);
};
d3.selectAll = function(nodes) {
var group;
if (typeof nodes === "string") {
group = d3_array(d3_selectAll(nodes, d3_document));
group.parentNode = d3_document.documentElement;
} else {
group = d3_array(nodes);
group.parentNode = null;
}
return d3_selection([ group ]);
};
d3_selectionPrototype.on = function(type, listener, capture) {
var n = arguments.length;
if (n < 3) {
if (typeof type !== "string") {
if (n < 2) listener = false;
for (capture in type) this.each(d3_selection_on(capture, type[capture], listener));
return this;
}
if (n < 2) return (n = this.node()["__on" + type]) && n._;
capture = false;
}
return this.each(d3_selection_on(type, listener, capture));
};
function d3_selection_on(type, listener, capture) {
var name = "__on" + type, i = type.indexOf("."), wrap = d3_selection_onListener;
if (i > 0) type = type.slice(0, i);
var filter = d3_selection_onFilters.get(type);
if (filter) type = filter, wrap = d3_selection_onFilter;
function onRemove() {
var l = this[name];
if (l) {
this.removeEventListener(type, l, l.$);
delete this[name];
}
}
function onAdd() {
var l = wrap(listener, d3_array(arguments));
onRemove.call(this);
this.addEventListener(type, this[name] = l, l.$ = capture);
l._ = listener;
}
function removeAll() {
var re = new RegExp("^__on([^.]+)" + d3.requote(type) + "$"), match;
for (var name in this) {
if (match = name.match(re)) {
var l = this[name];
this.removeEventListener(match[1], l, l.$);
delete this[name];
}
}
}
return i ? listener ? onAdd : onRemove : listener ? d3_noop : removeAll;
}
var d3_selection_onFilters = d3.map({
mouseenter: "mouseover",
mouseleave: "mouseout"
});
if (d3_document) {
d3_selection_onFilters.forEach(function(k) {
if ("on" + k in d3_document) d3_selection_onFilters.remove(k);
});
}
function d3_selection_onListener(listener, argumentz) {
return function(e) {
var o = d3.event;
d3.event = e;
argumentz[0] = this.__data__;
try {
listener.apply(this, argumentz);
} finally {
d3.event = o;
}
};
}
function d3_selection_onFilter(listener, argumentz) {
var l = d3_selection_onListener(listener, argumentz);
return function(e) {
var target = this, related = e.relatedTarget;
if (!related || related !== target && !(related.compareDocumentPosition(target) & 8)) {
l.call(target, e);
}
};
}
var d3_event_dragSelect, d3_event_dragId = 0;
function d3_event_dragSuppress(node) {
var name = ".dragsuppress-" + ++d3_event_dragId, click = "click" + name, w = d3.select(d3_window(node)).on("touchmove" + name, d3_eventPreventDefault).on("dragstart" + name, d3_eventPreventDefault).on("selectstart" + name, d3_eventPreventDefault);
if (d3_event_dragSelect == null) {
d3_event_dragSelect = "onselectstart" in node ? false : d3_vendorSymbol(node.style, "userSelect");
}
if (d3_event_dragSelect) {
var style = d3_documentElement(node).style, select = style[d3_event_dragSelect];
style[d3_event_dragSelect] = "none";
}
return function(suppressClick) {
w.on(name, null);
if (d3_event_dragSelect) style[d3_event_dragSelect] = select;
if (suppressClick) {
var off = function() {
w.on(click, null);
};
w.on(click, function() {
d3_eventPreventDefault();
off();
}, true);
setTimeout(off, 0);
}
};
}
d3.mouse = function(container) {
return d3_mousePoint(container, d3_eventSource());
};
var d3_mouse_bug44083 = this.navigator && /WebKit/.test(this.navigator.userAgent) ? -1 : 0;
function d3_mousePoint(container, e) {
if (e.changedTouches) e = e.changedTouches[0];
var svg = container.ownerSVGElement || container;
if (svg.createSVGPoint) {
var point = svg.createSVGPoint();
if (d3_mouse_bug44083 < 0) {
var window = d3_window(container);
if (window.scrollX || window.scrollY) {
svg = d3.select("body").append("svg").style({
position: "absolute",
top: 0,
left: 0,
margin: 0,
padding: 0,
border: "none"
}, "important");
var ctm = svg[0][0].getScreenCTM();
d3_mouse_bug44083 = !(ctm.f || ctm.e);
svg.remove();
}
}
if (d3_mouse_bug44083) point.x = e.pageX, point.y = e.pageY; else point.x = e.clientX,
point.y = e.clientY;
point = point.matrixTransform(container.getScreenCTM().inverse());
return [ point.x, point.y ];
}
var rect = container.getBoundingClientRect();
return [ e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop ];
}
d3.touch = function(container, touches, identifier) {
if (arguments.length < 3) identifier = touches, touches = d3_eventSource().changedTouches;
if (touches) for (var i = 0, n = touches.length, touch; i < n; ++i) {
if ((touch = touches[i]).identifier === identifier) {
return d3_mousePoint(container, touch);
}
}
};
d3.behavior.drag = function() {
var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null, mousedown = dragstart(d3_noop, d3.mouse, d3_window, "mousemove", "mouseup"), touchstart = dragstart(d3_behavior_dragTouchId, d3.touch, d3_identity, "touchmove", "touchend");
function drag() {
this.on("mousedown.drag", mousedown).on("touchstart.drag", touchstart);
}
function dragstart(id, position, subject, move, end) {
return function() {
var that = this, target = d3.event.target.correspondingElement || d3.event.target, parent = that.parentNode, dispatch = event.of(that, arguments), dragged = 0, dragId = id(), dragName = ".drag" + (dragId == null ? "" : "-" + dragId), dragOffset, dragSubject = d3.select(subject(target)).on(move + dragName, moved).on(end + dragName, ended), dragRestore = d3_event_dragSuppress(target), position0 = position(parent, dragId);
if (origin) {
dragOffset = origin.apply(that, arguments);
dragOffset = [ dragOffset.x - position0[0], dragOffset.y - position0[1] ];
} else {
dragOffset = [ 0, 0 ];
}
dispatch({
type: "dragstart"
});
function moved() {
var position1 = position(parent, dragId), dx, dy;
if (!position1) return;
dx = position1[0] - position0[0];
dy = position1[1] - position0[1];
dragged |= dx | dy;
position0 = position1;
dispatch({
type: "drag",
x: position1[0] + dragOffset[0],
y: position1[1] + dragOffset[1],
dx: dx,
dy: dy
});
}
function ended() {
if (!position(parent, dragId)) return;
dragSubject.on(move + dragName, null).on(end + dragName, null);
dragRestore(dragged);
dispatch({
type: "dragend"
});
}
};
}
drag.origin = function(x) {
if (!arguments.length) return origin;
origin = x;
return drag;
};
return d3.rebind(drag, event, "on");
};
function d3_behavior_dragTouchId() {
return d3.event.changedTouches[0].identifier;
}
d3.touches = function(container, touches) {
if (arguments.length < 2) touches = d3_eventSource().touches;
return touches ? d3_array(touches).map(function(touch) {
var point = d3_mousePoint(container, touch);
point.identifier = touch.identifier;
return point;
}) : [];
};
var ε = 1e-6, ε2 = ε * ε, π = Math.PI, τ = 2 * π, τε = τ - ε, halfπ = π / 2, d3_radians = π / 180, d3_degrees = 180 / π;
function d3_sgn(x) {
return x > 0 ? 1 : x < 0 ? -1 : 0;
}
function d3_cross2d(a, b, c) {
return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
}
function d3_acos(x) {
return x > 1 ? 0 : x < -1 ? π : Math.acos(x);
}
function d3_asin(x) {
return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x);
}
function d3_sinh(x) {
return ((x = Math.exp(x)) - 1 / x) / 2;
}
function d3_cosh(x) {
return ((x = Math.exp(x)) + 1 / x) / 2;
}
function d3_tanh(x) {
return ((x = Math.exp(2 * x)) - 1) / (x + 1);
}
function d3_haversin(x) {
return (x = Math.sin(x / 2)) * x;
}
var ρ = Math.SQRT2, ρ2 = 2, ρ4 = 4;
d3.interpolateZoom = function(p0, p1) {
var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], ux1 = p1[0], uy1 = p1[1], w1 = p1[2], dx = ux1 - ux0, dy = uy1 - uy0, d2 = dx * dx + dy * dy, i, S;
if (d2 < ε2) {
S = Math.log(w1 / w0) / ρ;
i = function(t) {
return [ ux0 + t * dx, uy0 + t * dy, w0 * Math.exp(ρ * t * S) ];
};
} else {
var d1 = Math.sqrt(d2), b0 = (w1 * w1 - w0 * w0 + ρ4 * d2) / (2 * w0 * ρ2 * d1), b1 = (w1 * w1 - w0 * w0 - ρ4 * d2) / (2 * w1 * ρ2 * d1), r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1);
S = (r1 - r0) / ρ;
i = function(t) {
var s = t * S, coshr0 = d3_cosh(r0), u = w0 / (ρ2 * d1) * (coshr0 * d3_tanh(ρ * s + r0) - d3_sinh(r0));
return [ ux0 + u * dx, uy0 + u * dy, w0 * coshr0 / d3_cosh(ρ * s + r0) ];
};
}
i.duration = S * 1e3;
return i;
};
d3.behavior.zoom = function() {
var view = {
x: 0,
y: 0,
k: 1
}, translate0, center0, center, size = [ 960, 500 ], scaleExtent = d3_behavior_zoomInfinity, duration = 250, zooming = 0, mousedown = "mousedown.zoom", mousemove = "mousemove.zoom", mouseup = "mouseup.zoom", mousewheelTimer, touchstart = "touchstart.zoom", touchtime, event = d3_eventDispatch(zoom, "zoomstart", "zoom", "zoomend"), x0, x1, y0, y1;
if (!d3_behavior_zoomWheel) {
d3_behavior_zoomWheel = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function() {
return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1);
}, "wheel") : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function() {
return d3.event.wheelDelta;
}, "mousewheel") : (d3_behavior_zoomDelta = function() {
return -d3.event.detail;
}, "MozMousePixelScroll");
}
function zoom(g) {
g.on(mousedown, mousedowned).on(d3_behavior_zoomWheel + ".zoom", mousewheeled).on("dblclick.zoom", dblclicked).on(touchstart, touchstarted);
}
zoom.event = function(g) {
g.each(function() {
var dispatch = event.of(this, arguments), view1 = view;
if (d3_transitionInheritId) {
d3.select(this).transition().each("start.zoom", function() {
view = this.__chart__ || {
x: 0,
y: 0,
k: 1
};
zoomstarted(dispatch);
}).tween("zoom:zoom", function() {
var dx = size[0], dy = size[1], cx = center0 ? center0[0] : dx / 2, cy = center0 ? center0[1] : dy / 2, i = d3.interpolateZoom([ (cx - view.x) / view.k, (cy - view.y) / view.k, dx / view.k ], [ (cx - view1.x) / view1.k, (cy - view1.y) / view1.k, dx / view1.k ]);
return function(t) {
var l = i(t), k = dx / l[2];
this.__chart__ = view = {
x: cx - l[0] * k,
y: cy - l[1] * k,
k: k
};
zoomed(dispatch);
};
}).each("interrupt.zoom", function() {
zoomended(dispatch);
}).each("end.zoom", function() {
zoomended(dispatch);
});
} else {
this.__chart__ = view;
zoomstarted(dispatch);
zoomed(dispatch);
zoomended(dispatch);
}
});
};
zoom.translate = function(_) {
if (!arguments.length) return [ view.x, view.y ];
view = {
x: +_[0],
y: +_[1],
k: view.k
};
rescale();
return zoom;
};
zoom.scale = function(_) {
if (!arguments.length) return view.k;
view = {
x: view.x,
y: view.y,
k: null
};
scaleTo(+_);
rescale();
return zoom;
};
zoom.scaleExtent = function(_) {
if (!arguments.length) return scaleExtent;
scaleExtent = _ == null ? d3_behavior_zoomInfinity : [ +_[0], +_[1] ];
return zoom;
};
zoom.center = function(_) {
if (!arguments.length) return center;
center = _ && [ +_[0], +_[1] ];
return zoom;
};
zoom.size = function(_) {
if (!arguments.length) return size;
size = _ && [ +_[0], +_[1] ];
return zoom;
};
zoom.duration = function(_) {
if (!arguments.length) return duration;
duration = +_;
return zoom;
};
zoom.x = function(z) {
if (!arguments.length) return x1;
x1 = z;
x0 = z.copy();
view = {
x: 0,
y: 0,
k: 1
};
return zoom;
};
zoom.y = function(z) {
if (!arguments.length) return y1;
y1 = z;
y0 = z.copy();
view = {
x: 0,
y: 0,
k: 1
};
return zoom;
};
function location(p) {
return [ (p[0] - view.x) / view.k, (p[1] - view.y) / view.k ];
}
function point(l) {
return [ l[0] * view.k + view.x, l[1] * view.k + view.y ];
}
function scaleTo(s) {
view.k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
}
function translateTo(p, l) {
l = point(l);
view.x += p[0] - l[0];
view.y += p[1] - l[1];
}
function zoomTo(that, p, l, k) {
that.__chart__ = {
x: view.x,
y: view.y,
k: view.k
};
scaleTo(Math.pow(2, k));
translateTo(center0 = p, l);
that = d3.select(that);
if (duration > 0) that = that.transition().duration(duration);
that.call(zoom.event);
}
function rescale() {
if (x1) x1.domain(x0.range().map(function(x) {
return (x - view.x) / view.k;
}).map(x0.invert));
if (y1) y1.domain(y0.range().map(function(y) {
return (y - view.y) / view.k;
}).map(y0.invert));
}
function zoomstarted(dispatch) {
if (!zooming++) dispatch({
type: "zoomstart"
});
}
function zoomed(dispatch) {
rescale();
dispatch({
type: "zoom",
scale: view.k,
translate: [ view.x, view.y ]
});
}
function zoomended(dispatch) {
if (!--zooming) dispatch({
type: "zoomend"
}), center0 = null;
}
function mousedowned() {
var that = this, dispatch = event.of(that, arguments), dragged = 0, subject = d3.select(d3_window(that)).on(mousemove, moved).on(mouseup, ended), location0 = location(d3.mouse(that)), dragRestore = d3_event_dragSuppress(that);
d3_selection_interrupt.call(that);
zoomstarted(dispatch);
function moved() {
dragged = 1;
translateTo(d3.mouse(that), location0);
zoomed(dispatch);
}
function ended() {
subject.on(mousemove, null).on(mouseup, null);
dragRestore(dragged);
zoomended(dispatch);
}
}
function touchstarted() {
var that = this, dispatch = event.of(that, arguments), locations0 = {}, distance0 = 0, scale0, zoomName = ".zoom-" + d3.event.changedTouches[0].identifier, touchmove = "touchmove" + zoomName, touchend = "touchend" + zoomName, targets = [], subject = d3.select(that), dragRestore = d3_event_dragSuppress(that);
started();
zoomstarted(dispatch);
subject.on(mousedown, null).on(touchstart, started);
function relocate() {
var touches = d3.touches(that);
scale0 = view.k;
touches.forEach(function(t) {
if (t.identifier in locations0) locations0[t.identifier] = location(t);
});
return touches;
}
function started() {
var target = d3.event.target;
d3.select(target).on(touchmove, moved).on(touchend, ended);
targets.push(target);
var changed = d3.event.changedTouches;
for (var i = 0, n = changed.length; i < n; ++i) {
locations0[changed[i].identifier] = null;
}
var touches = relocate(), now = Date.now();
if (touches.length === 1) {
if (now - touchtime < 500) {
var p = touches[0];
zoomTo(that, p, locations0[p.identifier], Math.floor(Math.log(view.k) / Math.LN2) + 1);
d3_eventPreventDefault();
}
touchtime = now;
} else if (touches.length > 1) {
var p = touches[0], q = touches[1], dx = p[0] - q[0], dy = p[1] - q[1];
distance0 = dx * dx + dy * dy;
}
}
function moved() {
var touches = d3.touches(that), p0, l0, p1, l1;
d3_selection_interrupt.call(that);
for (var i = 0, n = touches.length; i < n; ++i, l1 = null) {
p1 = touches[i];
if (l1 = locations0[p1.identifier]) {
if (l0) break;
p0 = p1, l0 = l1;
}
}
if (l1) {
var distance1 = (distance1 = p1[0] - p0[0]) * distance1 + (distance1 = p1[1] - p0[1]) * distance1, scale1 = distance0 && Math.sqrt(distance1 / distance0);
p0 = [ (p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2 ];
l0 = [ (l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2 ];
scaleTo(scale1 * scale0);
}
touchtime = null;
translateTo(p0, l0);
zoomed(dispatch);
}
function ended() {
if (d3.event.touches.length) {
var changed = d3.event.changedTouches;
for (var i = 0, n = changed.length; i < n; ++i) {
delete locations0[changed[i].identifier];
}
for (var identifier in locations0) {
return void relocate();
}
}
d3.selectAll(targets).on(zoomName, null);
subject.on(mousedown, mousedowned).on(touchstart, touchstarted);
dragRestore();
zoomended(dispatch);
}
}
function mousewheeled() {
var dispatch = event.of(this, arguments);
if (mousewheelTimer) clearTimeout(mousewheelTimer); else d3_selection_interrupt.call(this),
translate0 = location(center0 = center || d3.mouse(this)), zoomstarted(dispatch);
mousewheelTimer = setTimeout(function() {
mousewheelTimer = null;
zoomended(dispatch);
}, 50);
d3_eventPreventDefault();
scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * view.k);
translateTo(center0, translate0);
zoomed(dispatch);
}
function dblclicked() {
var p = d3.mouse(this), k = Math.log(view.k) / Math.LN2;
zoomTo(this, p, location(p), d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1);
}
return d3.rebind(zoom, event, "on");
};
var d3_behavior_zoomInfinity = [ 0, Infinity ], d3_behavior_zoomDelta, d3_behavior_zoomWheel;
d3.color = d3_color;
function d3_color() {}
d3_color.prototype.toString = function() {
return this.rgb() + "";
};
d3.hsl = d3_hsl;
function d3_hsl(h, s, l) {
return this instanceof d3_hsl ? void (this.h = +h, this.s = +s, this.l = +l) : arguments.length < 2 ? h instanceof d3_hsl ? new d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : new d3_hsl(h, s, l);
}
var d3_hslPrototype = d3_hsl.prototype = new d3_color();
d3_hslPrototype.brighter = function(k) {
k = Math.pow(.7, arguments.length ? k : 1);
return new d3_hsl(this.h, this.s, this.l / k);
};
d3_hslPrototype.darker = function(k) {
k = Math.pow(.7, arguments.length ? k : 1);
return new d3_hsl(this.h, this.s, k * this.l);
};
d3_hslPrototype.rgb = function() {
return d3_hsl_rgb(this.h, this.s, this.l);
};
function d3_hsl_rgb(h, s, l) {
var m1, m2;
h = isNaN(h) ? 0 : (h %= 360) < 0 ? h + 360 : h;
s = isNaN(s) ? 0 : s < 0 ? 0 : s > 1 ? 1 : s;
l = l < 0 ? 0 : l > 1 ? 1 : l;
m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
m1 = 2 * l - m2;
function v(h) {
if (h > 360) h -= 360; else if (h < 0) h += 360;
if (h < 60) return m1 + (m2 - m1) * h / 60;
if (h < 180) return m2;
if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
return m1;
}
function vv(h) {
return Math.round(v(h) * 255);
}
return new d3_rgb(vv(h + 120), vv(h), vv(h - 120));
}
d3.hcl = d3_hcl;
function d3_hcl(h, c, l) {
return this instanceof d3_hcl ? void (this.h = +h, this.c = +c, this.l = +l) : arguments.length < 2 ? h instanceof d3_hcl ? new d3_hcl(h.h, h.c, h.l) : h instanceof d3_lab ? d3_lab_hcl(h.l, h.a, h.b) : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b) : new d3_hcl(h, c, l);
}
var d3_hclPrototype = d3_hcl.prototype = new d3_color();
d3_hclPrototype.brighter = function(k) {
return new d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)));
};
d3_hclPrototype.darker = function(k) {
return new d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)));
};
d3_hclPrototype.rgb = function() {
return d3_hcl_lab(this.h, this.c, this.l).rgb();
};
function d3_hcl_lab(h, c, l) {
if (isNaN(h)) h = 0;
if (isNaN(c)) c = 0;
return new d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c);
}
d3.lab = d3_lab;
function d3_lab(l, a, b) {
return this instanceof d3_lab ? void (this.l = +l, this.a = +a, this.b = +b) : arguments.length < 2 ? l instanceof d3_lab ? new d3_lab(l.l, l.a, l.b) : l instanceof d3_hcl ? d3_hcl_lab(l.h, l.c, l.l) : d3_rgb_lab((l = d3_rgb(l)).r, l.g, l.b) : new d3_lab(l, a, b);
}
var d3_lab_K = 18;
var d3_lab_X = .95047, d3_lab_Y = 1, d3_lab_Z = 1.08883;
var d3_labPrototype = d3_lab.prototype = new d3_color();
d3_labPrototype.brighter = function(k) {
return new d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
};
d3_labPrototype.darker = function(k) {
return new d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
};
d3_labPrototype.rgb = function() {
return d3_lab_rgb(this.l, this.a, this.b);
};
function d3_lab_rgb(l, a, b) {
var y = (l + 16) / 116, x = y + a / 500, z = y - b / 200;
x = d3_lab_xyz(x) * d3_lab_X;
y = d3_lab_xyz(y) * d3_lab_Y;
z = d3_lab_xyz(z) * d3_lab_Z;
return new d3_rgb(d3_xyz_rgb(3.2404542 * x - 1.5371385 * y - .4985314 * z), d3_xyz_rgb(-.969266 * x + 1.8760108 * y + .041556 * z), d3_xyz_rgb(.0556434 * x - .2040259 * y + 1.0572252 * z));
}
function d3_lab_hcl(l, a, b) {
return l > 0 ? new d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) : new d3_hcl(NaN, NaN, l);
}
function d3_lab_xyz(x) {
return x > .206893034 ? x * x * x : (x - 4 / 29) / 7.787037;
}
function d3_xyz_lab(x) {
return x > .008856 ? Math.pow(x, 1 / 3) : 7.787037 * x + 4 / 29;
}
function d3_xyz_rgb(r) {
return Math.round(255 * (r <= .00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - .055));
}
d3.rgb = d3_rgb;
function d3_rgb(r, g, b) {
return this instanceof d3_rgb ? void (this.r = ~~r, this.g = ~~g, this.b = ~~b) : arguments.length < 2 ? r instanceof d3_rgb ? new d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : new d3_rgb(r, g, b);
}
function d3_rgbNumber(value) {
return new d3_rgb(value >> 16, value >> 8 & 255, value & 255);
}
function d3_rgbString(value) {
return d3_rgbNumber(value) + "";
}
var d3_rgbPrototype = d3_rgb.prototype = new d3_color();
d3_rgbPrototype.brighter = function(k) {
k = Math.pow(.7, arguments.length ? k : 1);
var r = this.r, g = this.g, b = this.b, i = 30;
if (!r && !g && !b) return new d3_rgb(i, i, i);
if (r && r < i) r = i;
if (g && g < i) g = i;
if (b && b < i) b = i;
return new d3_rgb(Math.min(255, r / k), Math.min(255, g / k), Math.min(255, b / k));
};
d3_rgbPrototype.darker = function(k) {
k = Math.pow(.7, arguments.length ? k : 1);
return new d3_rgb(k * this.r, k * this.g, k * this.b);
};
d3_rgbPrototype.hsl = function() {
return d3_rgb_hsl(this.r, this.g, this.b);
};
d3_rgbPrototype.toString = function() {
return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
};
function d3_rgb_hex(v) {
return v < 16 ? "0" + Math.max(0, v).toString(16) : Math.min(255, v).toString(16);
}
function d3_rgb_parse(format, rgb, hsl) {
var r = 0, g = 0, b = 0, m1, m2, color;
m1 = /([a-z]+)\((.*)\)/.exec(format = format.toLowerCase());
if (m1) {
m2 = m1[2].split(",");
switch (m1[1]) {
case "hsl":
{
return hsl(parseFloat(m2[0]), parseFloat(m2[1]) / 100, parseFloat(m2[2]) / 100);
}
case "rgb":
{
return rgb(d3_rgb_parseNumber(m2[0]), d3_rgb_parseNumber(m2[1]), d3_rgb_parseNumber(m2[2]));
}
}
}
if (color = d3_rgb_names.get(format)) {
return rgb(color.r, color.g, color.b);
}
if (format != null && format.charAt(0) === "#" && !isNaN(color = parseInt(format.slice(1), 16))) {
if (format.length === 4) {
r = (color & 3840) >> 4;
r = r >> 4 | r;
g = color & 240;
g = g >> 4 | g;
b = color & 15;
b = b << 4 | b;
} else if (format.length === 7) {
r = (color & 16711680) >> 16;
g = (color & 65280) >> 8;
b = color & 255;
}
}
return rgb(r, g, b);
}
function d3_rgb_hsl(r, g, b) {
var min = Math.min(r /= 255, g /= 255, b /= 255), max = Math.max(r, g, b), d = max - min, h, s, l = (max + min) / 2;
if (d) {
s = l < .5 ? d / (max + min) : d / (2 - max - min);
if (r == max) h = (g - b) / d + (g < b ? 6 : 0); else if (g == max) h = (b - r) / d + 2; else h = (r - g) / d + 4;
h *= 60;
} else {
h = NaN;
s = l > 0 && l < 1 ? 0 : h;
}
return new d3_hsl(h, s, l);
}
function d3_rgb_lab(r, g, b) {
r = d3_rgb_xyz(r);
g = d3_rgb_xyz(g);
b = d3_rgb_xyz(b);
var x = d3_xyz_lab((.4124564 * r + .3575761 * g + .1804375 * b) / d3_lab_X), y = d3_xyz_lab((.2126729 * r + .7151522 * g + .072175 * b) / d3_lab_Y), z = d3_xyz_lab((.0193339 * r + .119192 * g + .9503041 * b) / d3_lab_Z);
return d3_lab(116 * y - 16, 500 * (x - y), 200 * (y - z));
}
function d3_rgb_xyz(r) {
return (r /= 255) <= .04045 ? r / 12.92 : Math.pow((r + .055) / 1.055, 2.4);
}
function d3_rgb_parseNumber(c) {
var f = parseFloat(c);
return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
}
var d3_rgb_names = d3.map({
aliceblue: 15792383,
antiquewhite: 16444375,
aqua: 65535,
aquamarine: 8388564,
azure: 15794175,
beige: 16119260,
bisque: 16770244,
black: 0,
blanchedalmond: 16772045,
blue: 255,
blueviolet: 9055202,
brown: 10824234,
burlywood: 14596231,
cadetblue: 6266528,
chartreuse: 8388352,
chocolate: 13789470,
coral: 16744272,
cornflowerblue: 6591981,
cornsilk: 16775388,
crimson: 14423100,
cyan: 65535,
darkblue: 139,
darkcyan: 35723,
darkgoldenrod: 12092939,
darkgray: 11119017,
darkgreen: 25600,
darkgrey: 11119017,
darkkhaki: 12433259,
darkmagenta: 9109643,
darkolivegreen: 5597999,
darkorange: 16747520,
darkorchid: 10040012,
darkred: 9109504,
darksalmon: 15308410,
darkseagreen: 9419919,
darkslateblue: 4734347,
darkslategray: 3100495,
darkslategrey: 3100495,
darkturquoise: 52945,
darkviolet: 9699539,
deeppink: 16716947,
deepskyblue: 49151,
dimgray: 6908265,
dimgrey: 6908265,
dodgerblue: 2003199,
firebrick: 11674146,
floralwhite: 16775920,
forestgreen: 2263842,
fuchsia: 16711935,
gainsboro: 14474460,
ghostwhite: 16316671,
gold: 16766720,
goldenrod: 14329120,
gray: 8421504,
green: 32768,
greenyellow: 11403055,
grey: 8421504,
honeydew: 15794160,
hotpink: 16738740,
indianred: 13458524,
indigo: 4915330,
ivory: 16777200,
khaki: 15787660,
lavender: 15132410,
lavenderblush: 16773365,
lawngreen: 8190976,
lemonchiffon: 16775885,
lightblue: 11393254,
lightcoral: 15761536,
lightcyan: 14745599,
lightgoldenrodyellow: 16448210,
lightgray: 13882323,
lightgreen: 9498256,
lightgrey: 13882323,
lightpink: 16758465,
lightsalmon: 16752762,
lightseagreen: 2142890,
lightskyblue: 8900346,
lightslategray: 7833753,
lightslategrey: 7833753,
lightsteelblue: 11584734,
lightyellow: 16777184,
lime: 65280,
limegreen: 3329330,
linen: 16445670,
magenta: 16711935,
maroon: 8388608,
mediumaquamarine: 6737322,
mediumblue: 205,
mediumorchid: 12211667,
mediumpurple: 9662683,
mediumseagreen: 3978097,
mediumslateblue: 8087790,
mediumspringgreen: 64154,
mediumturquoise: 4772300,
mediumvioletred: 13047173,
midnightblue: 1644912,
mintcream: 16121850,
mistyrose: 16770273,
moccasin: 16770229,
navajowhite: 16768685,
navy: 128,
oldlace: 16643558,
olive: 8421376,
olivedrab: 7048739,
orange: 16753920,
orangered: 16729344,
orchid: 14315734,
palegoldenrod: 15657130,
palegreen: 10025880,
paleturquoise: 11529966,
palevioletred: 14381203,
papayawhip: 16773077,
peachpuff: 16767673,
peru: 13468991,
pink: 16761035,
plum: 14524637,
powderblue: 11591910,
purple: 8388736,
rebeccapurple: 6697881,
red: 16711680,
rosybrown: 12357519,
royalblue: 4286945,
saddlebrown: 9127187,
salmon: 16416882,
sandybrown: 16032864,
seagreen: 3050327,
seashell: 16774638,
sienna: 10506797,
silver: 12632256,
skyblue: 8900331,
slateblue: 6970061,
slategray: 7372944,
slategrey: 7372944,
snow: 16775930,
springgreen: 65407,
steelblue: 4620980,
tan: 13808780,
teal: 32896,
thistle: 14204888,
tomato: 16737095,
turquoise: 4251856,
violet: 15631086,
wheat: 16113331,
white: 16777215,
whitesmoke: 16119285,
yellow: 16776960,
yellowgreen: 10145074
});
d3_rgb_names.forEach(function(key, value) {
d3_rgb_names.set(key, d3_rgbNumber(value));
});
function d3_functor(v) {
return typeof v === "function" ? v : function() {
return v;
};
}
d3.functor = d3_functor;
d3.xhr = d3_xhrType(d3_identity);
function d3_xhrType(response) {
return function(url, mimeType, callback) {
if (arguments.length === 2 && typeof mimeType === "function") callback = mimeType,
mimeType = null;
return d3_xhr(url, mimeType, response, callback);
};
}
function d3_xhr(url, mimeType, response, callback) {
var xhr = {}, dispatch = d3.dispatch("beforesend", "progress", "load", "error"), headers = {}, request = new XMLHttpRequest(), responseType = null;
if (this.XDomainRequest && !("withCredentials" in request) && /^(http(s)?:)?\/\//.test(url)) request = new XDomainRequest();
"onload" in request ? request.onload = request.onerror = respond : request.onreadystatechange = function() {
request.readyState > 3 && respond();
};
function respond() {
var status = request.status, result;
if (!status && d3_xhrHasResponse(request) || status >= 200 && status < 300 || status === 304) {
try {
result = response.call(xhr, request);
} catch (e) {
dispatch.error.call(xhr, e);
return;
}
dispatch.load.call(xhr, result);
} else {
dispatch.error.call(xhr, request);
}
}
request.onprogress = function(event) {
var o = d3.event;
d3.event = event;
try {
dispatch.progress.call(xhr, request);
} finally {
d3.event = o;
}
};
xhr.header = function(name, value) {
name = (name + "").toLowerCase();
if (arguments.length < 2) return headers[name];
if (value == null) delete headers[name]; else headers[name] = value + "";
return xhr;
};
xhr.mimeType = function(value) {
if (!arguments.length) return mimeType;
mimeType = value == null ? null : value + "";
return xhr;
};
xhr.responseType = function(value) {
if (!arguments.length) return responseType;
responseType = value;
return xhr;
};
xhr.response = function(value) {
response = value;
return xhr;
};
[ "get", "post" ].forEach(function(method) {
xhr[method] = function() {
return xhr.send.apply(xhr, [ method ].concat(d3_array(arguments)));
};
});
xhr.send = function(method, data, callback) {
if (arguments.length === 2 && typeof data === "function") callback = data, data = null;
request.open(method, url, true);
if (mimeType != null && !("accept" in headers)) headers["accept"] = mimeType + ",*/*";
if (request.setRequestHeader) for (var name in headers) request.setRequestHeader(name, headers[name]);
if (mimeType != null && request.overrideMimeType) request.overrideMimeType(mimeType);
if (responseType != null) request.responseType = responseType;
if (callback != null) xhr.on("error", callback).on("load", function(request) {
callback(null, request);
});
dispatch.beforesend.call(xhr, request);
request.send(data == null ? null : data);
return xhr;
};
xhr.abort = function() {
request.abort();
return xhr;
};
d3.rebind(xhr, dispatch, "on");
return callback == null ? xhr : xhr.get(d3_xhr_fixCallback(callback));
}
function d3_xhr_fixCallback(callback) {
return callback.length === 1 ? function(error, request) {
callback(error == null ? request : null);
} : callback;
}
function d3_xhrHasResponse(request) {
var type = request.responseType;
return type && type !== "text" ? request.response : request.responseText;
}
d3.dsv = function(delimiter, mimeType) {
var reFormat = new RegExp('["' + delimiter + "\n]"), delimiterCode = delimiter.charCodeAt(0);
function dsv(url, row, callback) {
if (arguments.length < 3) callback = row, row = null;
var xhr = d3_xhr(url, mimeType, row == null ? response : typedResponse(row), callback);
xhr.row = function(_) {
return arguments.length ? xhr.response((row = _) == null ? response : typedResponse(_)) : row;
};
return xhr;
}
function response(request) {
return dsv.parse(request.responseText);
}
function typedResponse(f) {
return function(request) {
return dsv.parse(request.responseText, f);
};
}
dsv.parse = function(text, f) {
var o;
return dsv.parseRows(text, function(row, i) {
if (o) return o(row, i - 1);
var a = new Function("d", "return {" + row.map(function(name, i) {
return JSON.stringify(name) + ": d[" + i + "]";
}).join(",") + "}");
o = f ? function(row, i) {
return f(a(row), i);
} : a;
});
};
dsv.parseRows = function(text, f) {
var EOL = {}, EOF = {}, rows = [], N = text.length, I = 0, n = 0, t, eol;
function token() {
if (I >= N) return EOF;
if (eol) return eol = false, EOL;
var j = I;
if (text.charCodeAt(j) === 34) {
var i = j;
while (i++ < N) {
if (text.charCodeAt(i) === 34) {
if (text.charCodeAt(i + 1) !== 34) break;
++i;
}
}
I = i + 2;
var c = text.charCodeAt(i + 1);
if (c === 13) {
eol = true;
if (text.charCodeAt(i + 2) === 10) ++I;
} else if (c === 10) {
eol = true;
}
return text.slice(j + 1, i).replace(/""/g, '"');
}
while (I < N) {
var c = text.charCodeAt(I++), k = 1;
if (c === 10) eol = true; else if (c === 13) {
eol = true;
if (text.charCodeAt(I) === 10) ++I, ++k;
} else if (c !== delimiterCode) continue;
return text.slice(j, I - k);
}
return text.slice(j);
}
while ((t = token()) !== EOF) {
var a = [];
while (t !== EOL && t !== EOF) {
a.push(t);
t = token();
}
if (f && (a = f(a, n++)) == null) continue;
rows.push(a);
}
return rows;
};
dsv.format = function(rows) {
if (Array.isArray(rows[0])) return dsv.formatRows(rows);
var fieldSet = new d3_Set(), fields = [];
rows.forEach(function(row) {
for (var field in row) {
if (!fieldSet.has(field)) {
fields.push(fieldSet.add(field));
}
}
});
return [ fields.map(formatValue).join(delimiter) ].concat(rows.map(function(row) {
return fields.map(function(field) {
return formatValue(row[field]);
}).join(delimiter);
})).join("\n");
};
dsv.formatRows = function(rows) {
return rows.map(formatRow).join("\n");
};
function formatRow(row) {
return row.map(formatValue).join(delimiter);
}
function formatValue(text) {
return reFormat.test(text) ? '"' + text.replace(/\"/g, '""') + '"' : text;
}
return dsv;
};
d3.csv = d3.dsv(",", "text/csv");
d3.tsv = d3.dsv(" ", "text/tab-separated-values");
var d3_timer_queueHead, d3_timer_queueTail, d3_timer_interval, d3_timer_timeout, d3_timer_frame = this[d3_vendorSymbol(this, "requestAnimationFrame")] || function(callback) {
setTimeout(callback, 17);
};
d3.timer = function() {
d3_timer.apply(this, arguments);
};
function d3_timer(callback, delay, then) {
var n = arguments.length;
if (n < 2) delay = 0;
if (n < 3) then = Date.now();
var time = then + delay, timer = {
c: callback,
t: time,
n: null
};
if (d3_timer_queueTail) d3_timer_queueTail.n = timer; else d3_timer_queueHead = timer;
d3_timer_queueTail = timer;
if (!d3_timer_interval) {
d3_timer_timeout = clearTimeout(d3_timer_timeout);
d3_timer_interval = 1;
d3_timer_frame(d3_timer_step);
}
return timer;
}
function d3_timer_step() {
var now = d3_timer_mark(), delay = d3_timer_sweep() - now;
if (delay > 24) {
if (isFinite(delay)) {
clearTimeout(d3_timer_timeout);
d3_timer_timeout = setTimeout(d3_timer_step, delay);
}
d3_timer_interval = 0;
} else {
d3_timer_interval = 1;
d3_timer_frame(d3_timer_step);
}
}
d3.timer.flush = function() {
d3_timer_mark();
d3_timer_sweep();
};
function d3_timer_mark() {
var now = Date.now(), timer = d3_timer_queueHead;
while (timer) {
if (now >= timer.t && timer.c(now - timer.t)) timer.c = null;
timer = timer.n;
}
return now;
}
function d3_timer_sweep() {
var t0, t1 = d3_timer_queueHead, time = Infinity;
while (t1) {
if (t1.c) {
if (t1.t < time) time = t1.t;
t1 = (t0 = t1).n;
} else {
t1 = t0 ? t0.n = t1.n : d3_timer_queueHead = t1.n;
}
}
d3_timer_queueTail = t0;
return time;
}
function d3_format_precision(x, p) {
return p - (x ? Math.ceil(Math.log(x) / Math.LN10) : 1);
}
d3.round = function(x, n) {
return n ? Math.round(x * (n = Math.pow(10, n))) / n : Math.round(x);
};
var d3_formatPrefixes = [ "y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y" ].map(d3_formatPrefix);
d3.formatPrefix = function(value, precision) {
var i = 0;
if (value = +value) {
if (value < 0) value *= -1;
if (precision) value = d3.round(value, d3_format_precision(value, precision));
i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
i = Math.max(-24, Math.min(24, Math.floor((i - 1) / 3) * 3));
}
return d3_formatPrefixes[8 + i / 3];
};
function d3_formatPrefix(d, i) {
var k = Math.pow(10, abs(8 - i) * 3);
return {
scale: i > 8 ? function(d) {
return d / k;
} : function(d) {
return d * k;
},
symbol: d
};
}
function d3_locale_numberFormat(locale) {
var locale_decimal = locale.decimal, locale_thousands = locale.thousands, locale_grouping = locale.grouping, locale_currency = locale.currency, formatGroup = locale_grouping && locale_thousands ? function(value, width) {
var i = value.length, t = [], j = 0, g = locale_grouping[0], length = 0;
while (i > 0 && g > 0) {
if (length + g + 1 > width) g = Math.max(1, width - length);
t.push(value.substring(i -= g, i + g));
if ((length += g + 1) > width) break;
g = locale_grouping[j = (j + 1) % locale_grouping.length];
}
return t.reverse().join(locale_thousands);
} : d3_identity;
return function(specifier) {
var match = d3_format_re.exec(specifier), fill = match[1] || " ", align = match[2] || ">", sign = match[3] || "-", symbol = match[4] || "", zfill = match[5], width = +match[6], comma = match[7], precision = match[8], type = match[9], scale = 1, prefix = "", suffix = "", integer = false, exponent = true;
if (precision) precision = +precision.substring(1);
if (zfill || fill === "0" && align === "=") {
zfill = fill = "0";
align = "=";
}
switch (type) {
case "n":
comma = true;
type = "g";
break;
case "%":
scale = 100;
suffix = "%";
type = "f";
break;
case "p":
scale = 100;
suffix = "%";
type = "r";
break;
case "b":
case "o":
case "x":
case "X":
if (symbol === "#") prefix = "0" + type.toLowerCase();
case "c":
exponent = false;
case "d":
integer = true;
precision = 0;
break;
case "s":
scale = -1;
type = "r";
break;
}
if (symbol === "$") prefix = locale_currency[0], suffix = locale_currency[1];
if (type == "r" && !precision) type = "g";
if (precision != null) {
if (type == "g") precision = Math.max(1, Math.min(21, precision)); else if (type == "e" || type == "f") precision = Math.max(0, Math.min(20, precision));
}
type = d3_format_types.get(type) || d3_format_typeDefault;
var zcomma = zfill && comma;
return function(value) {
var fullSuffix = suffix;
if (integer && value % 1) return "";
var negative = value < 0 || value === 0 && 1 / value < 0 ? (value = -value, "-") : sign === "-" ? "" : sign;
if (scale < 0) {
var unit = d3.formatPrefix(value, precision);
value = unit.scale(value);
fullSuffix = unit.symbol + suffix;
} else {
value *= scale;
}
value = type(value, precision);
var i = value.lastIndexOf("."), before, after;
if (i < 0) {
var j = exponent ? value.lastIndexOf("e") : -1;
if (j < 0) before = value, after = ""; else before = value.substring(0, j), after = value.substring(j);
} else {
before = value.substring(0, i);
after = locale_decimal + value.substring(i + 1);
}
if (!zfill && comma) before = formatGroup(before, Infinity);
var length = prefix.length + before.length + after.length + (zcomma ? 0 : negative.length), padding = length < width ? new Array(length = width - length + 1).join(fill) : "";
if (zcomma) before = formatGroup(padding + before, padding.length ? width - after.length : Infinity);
negative += prefix;
value = before + after;
return (align === "<" ? negative + value + padding : align === ">" ? padding + negative + value : align === "^" ? padding.substring(0, length >>= 1) + negative + value + padding.substring(length) : negative + (zcomma ? value : padding + value)) + fullSuffix;
};
};
}
var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?([$#])?(0)?(\d+)?(,)?(\.-?\d+)?([a-z%])?/i;
var d3_format_types = d3.map({
b: function(x) {
return x.toString(2);
},
c: function(x) {
return String.fromCharCode(x);
},
o: function(x) {
return x.toString(8);
},
x: function(x) {
return x.toString(16);
},
X: function(x) {
return x.toString(16).toUpperCase();
},
g: function(x, p) {
return x.toPrecision(p);
},
e: function(x, p) {
return x.toExponential(p);
},
f: function(x, p) {
return x.toFixed(p);
},
r: function(x, p) {
return (x = d3.round(x, d3_format_precision(x, p))).toFixed(Math.max(0, Math.min(20, d3_format_precision(x * (1 + 1e-15), p))));
}
});
function d3_format_typeDefault(x) {
return x + "";
}
var d3_time = d3.time = {}, d3_date = Date;
function d3_date_utc() {
this._ = new Date(arguments.length > 1 ? Date.UTC.apply(this, arguments) : arguments[0]);
}
d3_date_utc.prototype = {
getDate: function() {
return this._.getUTCDate();
},
getDay: function() {
return this._.getUTCDay();
},
getFullYear: function() {
return this._.getUTCFullYear();
},
getHours: function() {
return this._.getUTCHours();
},
getMilliseconds: function() {
return this._.getUTCMilliseconds();
},
getMinutes: function() {
return this._.getUTCMinutes();
},
getMonth: function() {
return this._.getUTCMonth();
},
getSeconds: function() {
return this._.getUTCSeconds();
},
getTime: function() {
return this._.getTime();
},
getTimezoneOffset: function() {
return 0;
},
valueOf: function() {
return this._.valueOf();
},
setDate: function() {
d3_time_prototype.setUTCDate.apply(this._, arguments);
},
setDay: function() {
d3_time_prototype.setUTCDay.apply(this._, arguments);
},
setFullYear: function() {
d3_time_prototype.setUTCFullYear.apply(this._, arguments);
},
setHours: function() {
d3_time_prototype.setUTCHours.apply(this._, arguments);
},
setMilliseconds: function() {
d3_time_prototype.setUTCMilliseconds.apply(this._, arguments);
},
setMinutes: function() {
d3_time_prototype.setUTCMinutes.apply(this._, arguments);
},
setMonth: function() {
d3_time_prototype.setUTCMonth.apply(this._, arguments);
},
setSeconds: function() {
d3_time_prototype.setUTCSeconds.apply(this._, arguments);
},
setTime: function() {
d3_time_prototype.setTime.apply(this._, arguments);
}
};
var d3_time_prototype = Date.prototype;
function d3_time_interval(local, step, number) {
function round(date) {
var d0 = local(date), d1 = offset(d0, 1);
return date - d0 < d1 - date ? d0 : d1;
}
function ceil(date) {
step(date = local(new d3_date(date - 1)), 1);
return date;
}
function offset(date, k) {
step(date = new d3_date(+date), k);
return date;
}
function range(t0, t1, dt) {
var time = ceil(t0), times = [];
if (dt > 1) {
while (time < t1) {
if (!(number(time) % dt)) times.push(new Date(+time));
step(time, 1);
}
} else {
while (time < t1) times.push(new Date(+time)), step(time, 1);
}
return times;
}
function range_utc(t0, t1, dt) {
try {
d3_date = d3_date_utc;
var utc = new d3_date_utc();
utc._ = t0;
return range(utc, t1, dt);
} finally {
d3_date = Date;
}
}
local.floor = local;
local.round = round;
local.ceil = ceil;
local.offset = offset;
local.range = range;
var utc = local.utc = d3_time_interval_utc(local);
utc.floor = utc;
utc.round = d3_time_interval_utc(round);
utc.ceil = d3_time_interval_utc(ceil);
utc.offset = d3_time_interval_utc(offset);
utc.range = range_utc;
return local;
}
function d3_time_interval_utc(method) {
return function(date, k) {
try {
d3_date = d3_date_utc;
var utc = new d3_date_utc();
utc._ = date;
return method(utc, k)._;
} finally {
d3_date = Date;
}
};
}
d3_time.year = d3_time_interval(function(date) {
date = d3_time.day(date);
date.setMonth(0, 1);
return date;
}, function(date, offset) {
date.setFullYear(date.getFullYear() + offset);
}, function(date) {
return date.getFullYear();
});
d3_time.years = d3_time.year.range;
d3_time.years.utc = d3_time.year.utc.range;
d3_time.day = d3_time_interval(function(date) {
var day = new d3_date(2e3, 0);
day.setFullYear(date.getFullYear(), date.getMonth(), date.getDate());
return day;
}, function(date, offset) {
date.setDate(date.getDate() + offset);
}, function(date) {
return date.getDate() - 1;
});
d3_time.days = d3_time.day.range;
d3_time.days.utc = d3_time.day.utc.range;
d3_time.dayOfYear = function(date) {
var year = d3_time.year(date);
return Math.floor((date - year - (date.getTimezoneOffset() - year.getTimezoneOffset()) * 6e4) / 864e5);
};
[ "sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday" ].forEach(function(day, i) {
i = 7 - i;
var interval = d3_time[day] = d3_time_interval(function(date) {
(date = d3_time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
return date;
}, function(date, offset) {
date.setDate(date.getDate() + Math.floor(offset) * 7);
}, function(date) {
var day = d3_time.year(date).getDay();
return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
});
d3_time[day + "s"] = interval.range;
d3_time[day + "s"].utc = interval.utc.range;
d3_time[day + "OfYear"] = function(date) {
var day = d3_time.year(date).getDay();
return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7);
};
});
d3_time.week = d3_time.sunday;
d3_time.weeks = d3_time.sunday.range;
d3_time.weeks.utc = d3_time.sunday.utc.range;
d3_time.weekOfYear = d3_time.sundayOfYear;
function d3_locale_timeFormat(locale) {
var locale_dateTime = locale.dateTime, locale_date = locale.date, locale_time = locale.time, locale_periods = locale.periods, locale_days = locale.days, locale_shortDays = locale.shortDays, locale_months = locale.months, locale_shortMonths = locale.shortMonths;
function d3_time_format(template) {
var n = template.length;
function format(date) {
var string = [], i = -1, j = 0, c, p, f;
while (++i < n) {
if (template.charCodeAt(i) === 37) {
string.push(template.slice(j, i));
if ((p = d3_time_formatPads[c = template.charAt(++i)]) != null) c = template.charAt(++i);
if (f = d3_time_formats[c]) c = f(date, p == null ? c === "e" ? " " : "0" : p);
string.push(c);
j = i + 1;
}
}
string.push(template.slice(j, i));
return string.join("");
}
format.parse = function(string) {
var d = {
y: 1900,
m: 0,
d: 1,
H: 0,
M: 0,
S: 0,
L: 0,
Z: null
}, i = d3_time_parse(d, template, string, 0);
if (i != string.length) return null;
if ("p" in d) d.H = d.H % 12 + d.p * 12;
var localZ = d.Z != null && d3_date !== d3_date_utc, date = new (localZ ? d3_date_utc : d3_date)();
if ("j" in d) date.setFullYear(d.y, 0, d.j); else if ("W" in d || "U" in d) {
if (!("w" in d)) d.w = "W" in d ? 1 : 0;
date.setFullYear(d.y, 0, 1);
date.setFullYear(d.y, 0, "W" in d ? (d.w + 6) % 7 + d.W * 7 - (date.getDay() + 5) % 7 : d.w + d.U * 7 - (date.getDay() + 6) % 7);
} else date.setFullYear(d.y, d.m, d.d);
date.setHours(d.H + (d.Z / 100 | 0), d.M + d.Z % 100, d.S, d.L);
return localZ ? date._ : date;
};
format.toString = function() {
return template;
};
return format;
}
function d3_time_parse(date, template, string, j) {
var c, p, t, i = 0, n = template.length, m = string.length;
while (i < n) {
if (j >= m) return -1;
c = template.charCodeAt(i++);
if (c === 37) {
t = template.charAt(i++);
p = d3_time_parsers[t in d3_time_formatPads ? template.charAt(i++) : t];
if (!p || (j = p(date, string, j)) < 0) return -1;
} else if (c != string.charCodeAt(j++)) {
return -1;
}
}
return j;
}
d3_time_format.utc = function(template) {
var local = d3_time_format(template);
function format(date) {
try {
d3_date = d3_date_utc;
var utc = new d3_date();
utc._ = date;
return local(utc);
} finally {
d3_date = Date;
}
}
format.parse = function(string) {
try {
d3_date = d3_date_utc;
var date = local.parse(string);
return date && date._;
} finally {
d3_date = Date;
}
};
format.toString = local.toString;
return format;
};
d3_time_format.multi = d3_time_format.utc.multi = d3_time_formatMulti;
var d3_time_periodLookup = d3.map(), d3_time_dayRe = d3_time_formatRe(locale_days), d3_time_dayLookup = d3_time_formatLookup(locale_days), d3_time_dayAbbrevRe = d3_time_formatRe(locale_shortDays), d3_time_dayAbbrevLookup = d3_time_formatLookup(locale_shortDays), d3_time_monthRe = d3_time_formatRe(locale_months), d3_time_monthLookup = d3_time_formatLookup(locale_months), d3_time_monthAbbrevRe = d3_time_formatRe(locale_shortMonths), d3_time_monthAbbrevLookup = d3_time_formatLookup(locale_shortMonths);
locale_periods.forEach(function(p, i) {
d3_time_periodLookup.set(p.toLowerCase(), i);
});
var d3_time_formats = {
a: function(d) {
return locale_shortDays[d.getDay()];
},
A: function(d) {
return locale_days[d.getDay()];
},
b: function(d) {
return locale_shortMonths[d.getMonth()];
},
B: function(d) {
return locale_months[d.getMonth()];
},
c: d3_time_format(locale_dateTime),
d: function(d, p) {
return d3_time_formatPad(d.getDate(), p, 2);
},
e: function(d, p) {
return d3_time_formatPad(d.getDate(), p, 2);
},
H: function(d, p) {
return d3_time_formatPad(d.getHours(), p, 2);
},
I: function(d, p) {
return d3_time_formatPad(d.getHours() % 12 || 12, p, 2);
},
j: function(d, p) {
return d3_time_formatPad(1 + d3_time.dayOfYear(d), p, 3);
},
L: function(d, p) {
return d3_time_formatPad(d.getMilliseconds(), p, 3);
},
m: function(d, p) {
return d3_time_formatPad(d.getMonth() + 1, p, 2);
},
M: function(d, p) {
return d3_time_formatPad(d.getMinutes(), p, 2);
},
p: function(d) {
return locale_periods[+(d.getHours() >= 12)];
},
S: function(d, p) {
return d3_time_formatPad(d.getSeconds(), p, 2);
},
U: function(d, p) {
return d3_time_formatPad(d3_time.sundayOfYear(d), p, 2);
},
w: function(d) {
return d.getDay();
},
W: function(d, p) {
return d3_time_formatPad(d3_time.mondayOfYear(d), p, 2);
},
x: d3_time_format(locale_date),
X: d3_time_format(locale_time),
y: function(d, p) {
return d3_time_formatPad(d.getFullYear() % 100, p, 2);
},
Y: function(d, p) {
return d3_time_formatPad(d.getFullYear() % 1e4, p, 4);
},
Z: d3_time_zone,
"%": function() {
return "%";
}
};
var d3_time_parsers = {
a: d3_time_parseWeekdayAbbrev,
A: d3_time_parseWeekday,
b: d3_time_parseMonthAbbrev,
B: d3_time_parseMonth,
c: d3_time_parseLocaleFull,
d: d3_time_parseDay,
e: d3_time_parseDay,
H: d3_time_parseHour24,
I: d3_time_parseHour24,
j: d3_time_parseDayOfYear,
L: d3_time_parseMilliseconds,
m: d3_time_parseMonthNumber,
M: d3_time_parseMinutes,
p: d3_time_parseAmPm,
S: d3_time_parseSeconds,
U: d3_time_parseWeekNumberSunday,
w: d3_time_parseWeekdayNumber,
W: d3_time_parseWeekNumberMonday,
x: d3_time_parseLocaleDate,
X: d3_time_parseLocaleTime,
y: d3_time_parseYear,
Y: d3_time_parseFullYear,
Z: d3_time_parseZone,
"%": d3_time_parseLiteralPercent
};
function d3_time_parseWeekdayAbbrev(date, string, i) {
d3_time_dayAbbrevRe.lastIndex = 0;
var n = d3_time_dayAbbrevRe.exec(string.slice(i));
return n ? (date.w = d3_time_dayAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
}
function d3_time_parseWeekday(date, string, i) {
d3_time_dayRe.lastIndex = 0;
var n = d3_time_dayRe.exec(string.slice(i));
return n ? (date.w = d3_time_dayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
}
function d3_time_parseMonthAbbrev(date, string, i) {
d3_time_monthAbbrevRe.lastIndex = 0;
var n = d3_time_monthAbbrevRe.exec(string.slice(i));
return n ? (date.m = d3_time_monthAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
}
function d3_time_parseMonth(date, string, i) {
d3_time_monthRe.lastIndex = 0;
var n = d3_time_monthRe.exec(string.slice(i));
return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
}
function d3_time_parseLocaleFull(date, string, i) {
return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
}
function d3_time_parseLocaleDate(date, string, i) {
return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
}
function d3_time_parseLocaleTime(date, string, i) {
return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
}
function d3_time_parseAmPm(date, string, i) {
var n = d3_time_periodLookup.get(string.slice(i, i += 2).toLowerCase());
return n == null ? -1 : (date.p = n, i);
}
return d3_time_format;
}
var d3_time_formatPads = {
"-": "",
_: " ",
"0": "0"
}, d3_time_numberRe = /^\s*\d+/, d3_time_percentRe = /^%/;
function d3_time_formatPad(value, fill, width) {
var sign = value < 0 ? "-" : "", string = (sign ? -value : value) + "", length = string.length;
return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string);
}
function d3_time_formatRe(names) {
return new RegExp("^(?:" + names.map(d3.requote).join("|") + ")", "i");
}
function d3_time_formatLookup(names) {
var map = new d3_Map(), i = -1, n = names.length;
while (++i < n) map.set(names[i].toLowerCase(), i);
return map;
}
function d3_time_parseWeekdayNumber(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.slice(i, i + 1));
return n ? (date.w = +n[0], i + n[0].length) : -1;
}
function d3_time_parseWeekNumberSunday(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.slice(i));
return n ? (date.U = +n[0], i + n[0].length) : -1;
}
function d3_time_parseWeekNumberMonday(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.slice(i));
return n ? (date.W = +n[0], i + n[0].length) : -1;
}
function d3_time_parseFullYear(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.slice(i, i + 4));
return n ? (date.y = +n[0], i + n[0].length) : -1;
}
function d3_time_parseYear(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.slice(i, i + 2));
return n ? (date.y = d3_time_expandYear(+n[0]), i + n[0].length) : -1;
}
function d3_time_parseZone(date, string, i) {
return /^[+-]\d{4}$/.test(string = string.slice(i, i + 5)) ? (date.Z = -string,
i + 5) : -1;
}
function d3_time_expandYear(d) {
return d + (d > 68 ? 1900 : 2e3);
}
function d3_time_parseMonthNumber(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.slice(i, i + 2));
return n ? (date.m = n[0] - 1, i + n[0].length) : -1;
}
function d3_time_parseDay(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.slice(i, i + 2));
return n ? (date.d = +n[0], i + n[0].length) : -1;
}
function d3_time_parseDayOfYear(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.slice(i, i + 3));
return n ? (date.j = +n[0], i + n[0].length) : -1;
}
function d3_time_parseHour24(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.slice(i, i + 2));
return n ? (date.H = +n[0], i + n[0].length) : -1;
}
function d3_time_parseMinutes(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.slice(i, i + 2));
return n ? (date.M = +n[0], i + n[0].length) : -1;
}
function d3_time_parseSeconds(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.slice(i, i + 2));
return n ? (date.S = +n[0], i + n[0].length) : -1;
}
function d3_time_parseMilliseconds(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.slice(i, i + 3));
return n ? (date.L = +n[0], i + n[0].length) : -1;
}
function d3_time_zone(d) {
var z = d.getTimezoneOffset(), zs = z > 0 ? "-" : "+", zh = abs(z) / 60 | 0, zm = abs(z) % 60;
return zs + d3_time_formatPad(zh, "0", 2) + d3_time_formatPad(zm, "0", 2);
}
function d3_time_parseLiteralPercent(date, string, i) {
d3_time_percentRe.lastIndex = 0;
var n = d3_time_percentRe.exec(string.slice(i, i + 1));
return n ? i + n[0].length : -1;
}
function d3_time_formatMulti(formats) {
var n = formats.length, i = -1;
while (++i < n) formats[i][0] = this(formats[i][0]);
return function(date) {
var i = 0, f = formats[i];
while (!f[1](date)) f = formats[++i];
return f[0](date);
};
}
d3.locale = function(locale) {
return {
numberFormat: d3_locale_numberFormat(locale),
timeFormat: d3_locale_timeFormat(locale)
};
};
var d3_locale_enUS = d3.locale({
decimal: ".",
thousands: ",",
grouping: [ 3 ],
currency: [ "$", "" ],
dateTime: "%a %b %e %X %Y",
date: "%m/%d/%Y",
time: "%H:%M:%S",
periods: [ "AM", "PM" ],
days: [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ],
shortDays: [ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" ],
months: [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ],
shortMonths: [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ]
});
d3.format = d3_locale_enUS.numberFormat;
d3.geo = {};
function d3_adder() {}
d3_adder.prototype = {
s: 0,
t: 0,
add: function(y) {
d3_adderSum(y, this.t, d3_adderTemp);
d3_adderSum(d3_adderTemp.s, this.s, this);
if (this.s) this.t += d3_adderTemp.t; else this.s = d3_adderTemp.t;
},
reset: function() {
this.s = this.t = 0;
},
valueOf: function() {
return this.s;
}
};
var d3_adderTemp = new d3_adder();
function d3_adderSum(a, b, o) {
var x = o.s = a + b, bv = x - a, av = x - bv;
o.t = a - av + (b - bv);
}
d3.geo.stream = function(object, listener) {
if (object && d3_geo_streamObjectType.hasOwnProperty(object.type)) {
d3_geo_streamObjectType[object.type](object, listener);
} else {
d3_geo_streamGeometry(object, listener);
}
};
function d3_geo_streamGeometry(geometry, listener) {
if (geometry && d3_geo_streamGeometryType.hasOwnProperty(geometry.type)) {
d3_geo_streamGeometryType[geometry.type](geometry, listener);
}
}
var d3_geo_streamObjectType = {
Feature: function(feature, listener) {
d3_geo_streamGeometry(feature.geometry, listener);
},
FeatureCollection: function(object, listener) {
var features = object.features, i = -1, n = features.length;
while (++i < n) d3_geo_streamGeometry(features[i].geometry, listener);
}
};
var d3_geo_streamGeometryType = {
Sphere: function(object, listener) {
listener.sphere();
},
Point: function(object, listener) {
object = object.coordinates;
listener.point(object[0], object[1], object[2]);
},
MultiPoint: function(object, listener) {
var coordinates = object.coordinates, i = -1, n = coordinates.length;
while (++i < n) object = coordinates[i], listener.point(object[0], object[1], object[2]);
},
LineString: function(object, listener) {
d3_geo_streamLine(object.coordinates, listener, 0);
},
MultiLineString: function(object, listener) {
var coordinates = object.coordinates, i = -1, n = coordinates.length;
while (++i < n) d3_geo_streamLine(coordinates[i], listener, 0);
},
Polygon: function(object, listener) {
d3_geo_streamPolygon(object.coordinates, listener);
},
MultiPolygon: function(object, listener) {
var coordinates = object.coordinates, i = -1, n = coordinates.length;
while (++i < n) d3_geo_streamPolygon(coordinates[i], listener);
},
GeometryCollection: function(object, listener) {
var geometries = object.geometries, i = -1, n = geometries.length;
while (++i < n) d3_geo_streamGeometry(geometries[i], listener);
}
};
function d3_geo_streamLine(coordinates, listener, closed) {
var i = -1, n = coordinates.length - closed, coordinate;
listener.lineStart();
while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1], coordinate[2]);
listener.lineEnd();
}
function d3_geo_streamPolygon(coordinates, listener) {
var i = -1, n = coordinates.length;
listener.polygonStart();
while (++i < n) d3_geo_streamLine(coordinates[i], listener, 1);
listener.polygonEnd();
}
d3.geo.area = function(object) {
d3_geo_areaSum = 0;
d3.geo.stream(object, d3_geo_area);
return d3_geo_areaSum;
};
var d3_geo_areaSum, d3_geo_areaRingSum = new d3_adder();
var d3_geo_area = {
sphere: function() {
d3_geo_areaSum += 4 * π;
},
point: d3_noop,
lineStart: d3_noop,
lineEnd: d3_noop,
polygonStart: function() {
d3_geo_areaRingSum.reset();
d3_geo_area.lineStart = d3_geo_areaRingStart;
},
polygonEnd: function() {
var area = 2 * d3_geo_areaRingSum;
d3_geo_areaSum += area < 0 ? 4 * π + area : area;
d3_geo_area.lineStart = d3_geo_area.lineEnd = d3_geo_area.point = d3_noop;
}
};
function d3_geo_areaRingStart() {
var λ00, φ00, λ0, cosφ0, sinφ0;
d3_geo_area.point = function(λ, φ) {
d3_geo_area.point = nextPoint;
λ0 = (λ00 = λ) * d3_radians, cosφ0 = Math.cos(φ = (φ00 = φ) * d3_radians / 2 + π / 4),
sinφ0 = Math.sin(φ);
};
function nextPoint(λ, φ) {
λ *= d3_radians;
φ = φ * d3_radians / 2 + π / 4;
var dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, cosφ = Math.cos(φ), sinφ = Math.sin(φ), k = sinφ0 * sinφ, u = cosφ0 * cosφ + k * Math.cos(adλ), v = k * sdλ * Math.sin(adλ);
d3_geo_areaRingSum.add(Math.atan2(v, u));
λ0 = λ, cosφ0 = cosφ, sinφ0 = sinφ;
}
d3_geo_area.lineEnd = function() {
nextPoint(λ00, φ00);
};
}
function d3_geo_cartesian(spherical) {
var λ = spherical[0], φ = spherical[1], cosφ = Math.cos(φ);
return [ cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ) ];
}
function d3_geo_cartesianDot(a, b) {
return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
}
function d3_geo_cartesianCross(a, b) {
return [ a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0] ];
}
function d3_geo_cartesianAdd(a, b) {
a[0] += b[0];
a[1] += b[1];
a[2] += b[2];
}
function d3_geo_cartesianScale(vector, k) {
return [ vector[0] * k, vector[1] * k, vector[2] * k ];
}
function d3_geo_cartesianNormalize(d) {
var l = Math.sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
d[0] /= l;
d[1] /= l;
d[2] /= l;
}
function d3_geo_spherical(cartesian) {
return [ Math.atan2(cartesian[1], cartesian[0]), d3_asin(cartesian[2]) ];
}
function d3_geo_sphericalEqual(a, b) {
return abs(a[0] - b[0]) < ε && abs(a[1] - b[1]) < ε;
}
d3.geo.bounds = function() {
var λ0, φ0, λ1, φ1, λ_, λ__, φ__, p0, dλSum, ranges, range;
var bound = {
point: point,
lineStart: lineStart,
lineEnd: lineEnd,
polygonStart: function() {
bound.point = ringPoint;
bound.lineStart = ringStart;
bound.lineEnd = ringEnd;
dλSum = 0;
d3_geo_area.polygonStart();
},
polygonEnd: function() {
d3_geo_area.polygonEnd();
bound.point = point;
bound.lineStart = lineStart;
bound.lineEnd = lineEnd;
if (d3_geo_areaRingSum < 0) λ0 = -(λ1 = 180), φ0 = -(φ1 = 90); else if (dλSum > ε) φ1 = 90; else if (dλSum < -ε) φ0 = -90;
range[0] = λ0, range[1] = λ1;
}
};
function point(λ, φ) {
ranges.push(range = [ λ0 = λ, λ1 = λ ]);
if (φ < φ0) φ0 = φ;
if (φ > φ1) φ1 = φ;
}
function linePoint(λ, φ) {
var p = d3_geo_cartesian([ λ * d3_radians, φ * d3_radians ]);
if (p0) {
var normal = d3_geo_cartesianCross(p0, p), equatorial = [ normal[1], -normal[0], 0 ], inflection = d3_geo_cartesianCross(equatorial, normal);
d3_geo_cartesianNormalize(inflection);
inflection = d3_geo_spherical(inflection);
var dλ = λ - λ_, s = dλ > 0 ? 1 : -1, λi = inflection[0] * d3_degrees * s, antimeridian = abs(dλ) > 180;
if (antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
var φi = inflection[1] * d3_degrees;
if (φi > φ1) φ1 = φi;
} else if (λi = (λi + 360) % 360 - 180, antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
var φi = -inflection[1] * d3_degrees;
if (φi < φ0) φ0 = φi;
} else {
if (φ < φ0) φ0 = φ;
if (φ > φ1) φ1 = φ;
}
if (antimeridian) {
if (λ < λ_) {
if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
} else {
if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
}
} else {
if (λ1 >= λ0) {
if (λ < λ0) λ0 = λ;
if (λ > λ1) λ1 = λ;
} else {
if (λ > λ_) {
if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
} else {
if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
}
}
}
} else {
point(λ, φ);
}
p0 = p, λ_ = λ;
}
function lineStart() {
bound.point = linePoint;
}
function lineEnd() {
range[0] = λ0, range[1] = λ1;
bound.point = point;
p0 = null;
}
function ringPoint(λ, φ) {
if (p0) {
var dλ = λ - λ_;
dλSum += abs(dλ) > 180 ? dλ + (dλ > 0 ? 360 : -360) : dλ;
} else λ__ = λ, φ__ = φ;
d3_geo_area.point(λ, φ);
linePoint(λ, φ);
}
function ringStart() {
d3_geo_area.lineStart();
}
function ringEnd() {
ringPoint(λ__, φ__);
d3_geo_area.lineEnd();
if (abs(dλSum) > ε) λ0 = -(λ1 = 180);
range[0] = λ0, range[1] = λ1;
p0 = null;
}
function angle(λ0, λ1) {
return (λ1 -= λ0) < 0 ? λ1 + 360 : λ1;
}
function compareRanges(a, b) {
return a[0] - b[0];
}
function withinRange(x, range) {
return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x;
}
return function(feature) {
φ1 = λ1 = -(λ0 = φ0 = Infinity);
ranges = [];
d3.geo.stream(feature, bound);
var n = ranges.length;
if (n) {
ranges.sort(compareRanges);
for (var i = 1, a = ranges[0], b, merged = [ a ]; i < n; ++i) {
b = ranges[i];
if (withinRange(b[0], a) || withinRange(b[1], a)) {
if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1];
if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0];
} else {
merged.push(a = b);
}
}
var best = -Infinity, dλ;
for (var n = merged.length - 1, i = 0, a = merged[n], b; i <= n; a = b, ++i) {
b = merged[i];
if ((dλ = angle(a[1], b[0])) > best) best = dλ, λ0 = b[0], λ1 = a[1];
}
}
ranges = range = null;
return λ0 === Infinity || φ0 === Infinity ? [ [ NaN, NaN ], [ NaN, NaN ] ] : [ [ λ0, φ0 ], [ λ1, φ1 ] ];
};
}();
d3.geo.centroid = function(object) {
d3_geo_centroidW0 = d3_geo_centroidW1 = d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
d3.geo.stream(object, d3_geo_centroid);
var x = d3_geo_centroidX2, y = d3_geo_centroidY2, z = d3_geo_centroidZ2, m = x * x + y * y + z * z;
if (m < ε2) {
x = d3_geo_centroidX1, y = d3_geo_centroidY1, z = d3_geo_centroidZ1;
if (d3_geo_centroidW1 < ε) x = d3_geo_centroidX0, y = d3_geo_centroidY0, z = d3_geo_centroidZ0;
m = x * x + y * y + z * z;
if (m < ε2) return [ NaN, NaN ];
}
return [ Math.atan2(y, x) * d3_degrees, d3_asin(z / Math.sqrt(m)) * d3_degrees ];
};
var d3_geo_centroidW0, d3_geo_centroidW1, d3_geo_centroidX0, d3_geo_centroidY0, d3_geo_centroidZ0, d3_geo_centroidX1, d3_geo_centroidY1, d3_geo_centroidZ1, d3_geo_centroidX2, d3_geo_centroidY2, d3_geo_centroidZ2;
var d3_geo_centroid = {
sphere: d3_noop,
point: d3_geo_centroidPoint,
lineStart: d3_geo_centroidLineStart,
lineEnd: d3_geo_centroidLineEnd,
polygonStart: function() {
d3_geo_centroid.lineStart = d3_geo_centroidRingStart;
},
polygonEnd: function() {
d3_geo_centroid.lineStart = d3_geo_centroidLineStart;
}
};
function d3_geo_centroidPoint(λ, φ) {
λ *= d3_radians;
var cosφ = Math.cos(φ *= d3_radians);
d3_geo_centroidPointXYZ(cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ));
}
function d3_geo_centroidPointXYZ(x, y, z) {
++d3_geo_centroidW0;
d3_geo_centroidX0 += (x - d3_geo_centroidX0) / d3_geo_centroidW0;
d3_geo_centroidY0 += (y - d3_geo_centroidY0) / d3_geo_centroidW0;
d3_geo_centroidZ0 += (z - d3_geo_centroidZ0) / d3_geo_centroidW0;
}
function d3_geo_centroidLineStart() {
var x0, y0, z0;
d3_geo_centroid.point = function(λ, φ) {
λ *= d3_radians;
var cosφ = Math.cos(φ *= d3_radians);
x0 = cosφ * Math.cos(λ);
y0 = cosφ * Math.sin(λ);
z0 = Math.sin(φ);
d3_geo_centroid.point = nextPoint;
d3_geo_centroidPointXYZ(x0, y0, z0);
};
function nextPoint(λ, φ) {
λ *= d3_radians;
var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), w = Math.atan2(Math.sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
d3_geo_centroidW1 += w;
d3_geo_centroidX1 += w * (x0 + (x0 = x));
d3_geo_centroidY1 += w * (y0 + (y0 = y));
d3_geo_centroidZ1 += w * (z0 + (z0 = z));
d3_geo_centroidPointXYZ(x0, y0, z0);
}
}
function d3_geo_centroidLineEnd() {
d3_geo_centroid.point = d3_geo_centroidPoint;
}
function d3_geo_centroidRingStart() {
var λ00, φ00, x0, y0, z0;
d3_geo_centroid.point = function(λ, φ) {
λ00 = λ, φ00 = φ;
d3_geo_centroid.point = nextPoint;
λ *= d3_radians;
var cosφ = Math.cos(φ *= d3_radians);
x0 = cosφ * Math.cos(λ);
y0 = cosφ * Math.sin(λ);
z0 = Math.sin(φ);
d3_geo_centroidPointXYZ(x0, y0, z0);
};
d3_geo_centroid.lineEnd = function() {
nextPoint(λ00, φ00);
d3_geo_centroid.lineEnd = d3_geo_centroidLineEnd;
d3_geo_centroid.point = d3_geo_centroidPoint;
};
function nextPoint(λ, φ) {
λ *= d3_radians;
var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), cx = y0 * z - z0 * y, cy = z0 * x - x0 * z, cz = x0 * y - y0 * x, m = Math.sqrt(cx * cx + cy * cy + cz * cz), u = x0 * x + y0 * y + z0 * z, v = m && -d3_acos(u) / m, w = Math.atan2(m, u);
d3_geo_centroidX2 += v * cx;
d3_geo_centroidY2 += v * cy;
d3_geo_centroidZ2 += v * cz;
d3_geo_centroidW1 += w;
d3_geo_centroidX1 += w * (x0 + (x0 = x));
d3_geo_centroidY1 += w * (y0 + (y0 = y));
d3_geo_centroidZ1 += w * (z0 + (z0 = z));
d3_geo_centroidPointXYZ(x0, y0, z0);
}
}
function d3_geo_compose(a, b) {
function compose(x, y) {
return x = a(x, y), b(x[0], x[1]);
}
if (a.invert && b.invert) compose.invert = function(x, y) {
return x = b.invert(x, y), x && a.invert(x[0], x[1]);
};
return compose;
}
function d3_true() {
return true;
}
function d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener) {
var subject = [], clip = [];
segments.forEach(function(segment) {
if ((n = segment.length - 1) <= 0) return;
var n, p0 = segment[0], p1 = segment[n];
if (d3_geo_sphericalEqual(p0, p1)) {
listener.lineStart();
for (var i = 0; i < n; ++i) listener.point((p0 = segment[i])[0], p0[1]);
listener.lineEnd();
return;
}
var a = new d3_geo_clipPolygonIntersection(p0, segment, null, true), b = new d3_geo_clipPolygonIntersection(p0, null, a, false);
a.o = b;
subject.push(a);
clip.push(b);
a = new d3_geo_clipPolygonIntersection(p1, segment, null, false);
b = new d3_geo_clipPolygonIntersection(p1, null, a, true);
a.o = b;
subject.push(a);
clip.push(b);
});
clip.sort(compare);
d3_geo_clipPolygonLinkCircular(subject);
d3_geo_clipPolygonLinkCircular(clip);
if (!subject.length) return;
for (var i = 0, entry = clipStartInside, n = clip.length; i < n; ++i) {
clip[i].e = entry = !entry;
}
var start = subject[0], points, point;
while (1) {
var current = start, isSubject = true;
while (current.v) if ((current = current.n) === start) return;
points = current.z;
listener.lineStart();
do {
current.v = current.o.v = true;
if (current.e) {
if (isSubject) {
for (var i = 0, n = points.length; i < n; ++i) listener.point((point = points[i])[0], point[1]);
} else {
interpolate(current.x, current.n.x, 1, listener);
}
current = current.n;
} else {
if (isSubject) {
points = current.p.z;
for (var i = points.length - 1; i >= 0; --i) listener.point((point = points[i])[0], point[1]);
} else {
interpolate(current.x, current.p.x, -1, listener);
}
current = current.p;
}
current = current.o;
points = current.z;
isSubject = !isSubject;
} while (!current.v);
listener.lineEnd();
}
}
function d3_geo_clipPolygonLinkCircular(array) {
if (!(n = array.length)) return;
var n, i = 0, a = array[0], b;
while (++i < n) {
a.n = b = array[i];
b.p = a;
a = b;
}
a.n = b = array[0];
b.p = a;
}
function d3_geo_clipPolygonIntersection(point, points, other, entry) {
this.x = point;
this.z = points;
this.o = other;
this.e = entry;
this.v = false;
this.n = this.p = null;
}
function d3_geo_clip(pointVisible, clipLine, interpolate, clipStart) {
return function(rotate, listener) {
var line = clipLine(listener), rotatedClipStart = rotate.invert(clipStart[0], clipStart[1]);
var clip = {
point: point,
lineStart: lineStart,
lineEnd: lineEnd,
polygonStart: function() {
clip.point = pointRing;
clip.lineStart = ringStart;
clip.lineEnd = ringEnd;
segments = [];
polygon = [];
},
polygonEnd: function() {
clip.point = point;
clip.lineStart = lineStart;
clip.lineEnd = lineEnd;
segments = d3.merge(segments);
var clipStartInside = d3_geo_pointInPolygon(rotatedClipStart, polygon);
if (segments.length) {
if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
d3_geo_clipPolygon(segments, d3_geo_clipSort, clipStartInside, interpolate, listener);
} else if (clipStartInside) {
if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
listener.lineStart();
interpolate(null, null, 1, listener);
listener.lineEnd();
}
if (polygonStarted) listener.polygonEnd(), polygonStarted = false;
segments = polygon = null;
},
sphere: function() {
listener.polygonStart();
listener.lineStart();
interpolate(null, null, 1, listener);
listener.lineEnd();
listener.polygonEnd();
}
};
function point(λ, φ) {
var point = rotate(λ, φ);
if (pointVisible(λ = point[0], φ = point[1])) listener.point(λ, φ);
}
function pointLine(λ, φ) {
var point = rotate(λ, φ);
line.point(point[0], point[1]);
}
function lineStart() {
clip.point = pointLine;
line.lineStart();
}
function lineEnd() {
clip.point = point;
line.lineEnd();
}
var segments;
var buffer = d3_geo_clipBufferListener(), ringListener = clipLine(buffer), polygonStarted = false, polygon, ring;
function pointRing(λ, φ) {
ring.push([ λ, φ ]);
var point = rotate(λ, φ);
ringListener.point(point[0], point[1]);
}
function ringStart() {
ringListener.lineStart();
ring = [];
}
function ringEnd() {
pointRing(ring[0][0], ring[0][1]);
ringListener.lineEnd();
var clean = ringListener.clean(), ringSegments = buffer.buffer(), segment, n = ringSegments.length;
ring.pop();
polygon.push(ring);
ring = null;
if (!n) return;
if (clean & 1) {
segment = ringSegments[0];
var n = segment.length - 1, i = -1, point;
if (n > 0) {
if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
listener.lineStart();
while (++i < n) listener.point((point = segment[i])[0], point[1]);
listener.lineEnd();
}
return;
}
if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift()));
segments.push(ringSegments.filter(d3_geo_clipSegmentLength1));
}
return clip;
};
}
function d3_geo_clipSegmentLength1(segment) {
return segment.length > 1;
}
function d3_geo_clipBufferListener() {
var lines = [], line;
return {
lineStart: function() {
lines.push(line = []);
},
point: function(λ, φ) {
line.push([ λ, φ ]);
},
lineEnd: d3_noop,
buffer: function() {
var buffer = lines;
lines = [];
line = null;
return buffer;
},
rejoin: function() {
if (lines.length > 1) lines.push(lines.pop().concat(lines.shift()));
}
};
}
function d3_geo_clipSort(a, b) {
return ((a = a.x)[0] < 0 ? a[1] - halfπ - ε : halfπ - a[1]) - ((b = b.x)[0] < 0 ? b[1] - halfπ - ε : halfπ - b[1]);
}
var d3_geo_clipAntimeridian = d3_geo_clip(d3_true, d3_geo_clipAntimeridianLine, d3_geo_clipAntimeridianInterpolate, [ -π, -π / 2 ]);
function d3_geo_clipAntimeridianLine(listener) {
var λ0 = NaN, φ0 = NaN, sλ0 = NaN, clean;
return {
lineStart: function() {
listener.lineStart();
clean = 1;
},
point: function(λ1, φ1) {
var sλ1 = λ1 > 0 ? π : -π, dλ = abs(λ1 - λ0);
if (abs(dλ - π) < ε) {
listener.point(λ0, φ0 = (φ0 + φ1) / 2 > 0 ? halfπ : -halfπ);
listener.point(sλ0, φ0);
listener.lineEnd();
listener.lineStart();
listener.point(sλ1, φ0);
listener.point(λ1, φ0);
clean = 0;
} else if (sλ0 !== sλ1 && dλ >= π) {
if (abs(λ0 - sλ0) < ε) λ0 -= sλ0 * ε;
if (abs(λ1 - sλ1) < ε) λ1 -= sλ1 * ε;
φ0 = d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1);
listener.point(sλ0, φ0);
listener.lineEnd();
listener.lineStart();
listener.point(sλ1, φ0);
clean = 0;
}
listener.point(λ0 = λ1, φ0 = φ1);
sλ0 = sλ1;
},
lineEnd: function() {
listener.lineEnd();
λ0 = φ0 = NaN;
},
clean: function() {
return 2 - clean;
}
};
}
function d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1) {
var cosφ0, cosφ1, sinλ0_λ1 = Math.sin(λ0 - λ1);
return abs(sinλ0_λ1) > ε ? Math.atan((Math.sin(φ0) * (cosφ1 = Math.cos(φ1)) * Math.sin(λ1) - Math.sin(φ1) * (cosφ0 = Math.cos(φ0)) * Math.sin(λ0)) / (cosφ0 * cosφ1 * sinλ0_λ1)) : (φ0 + φ1) / 2;
}
function d3_geo_clipAntimeridianInterpolate(from, to, direction, listener) {
var φ;
if (from == null) {
φ = direction * halfπ;
listener.point(-π, φ);
listener.point(0, φ);
listener.point(π, φ);
listener.point(π, 0);
listener.point(π, -φ);
listener.point(0, -φ);
listener.point(-π, -φ);
listener.point(-π, 0);
listener.point(-π, φ);
} else if (abs(from[0] - to[0]) > ε) {
var s = from[0] < to[0] ? π : -π;
φ = direction * s / 2;
listener.point(-s, φ);
listener.point(0, φ);
listener.point(s, φ);
} else {
listener.point(to[0], to[1]);
}
}
function d3_geo_pointInPolygon(point, polygon) {
var meridian = point[0], parallel = point[1], meridianNormal = [ Math.sin(meridian), -Math.cos(meridian), 0 ], polarAngle = 0, winding = 0;
d3_geo_areaRingSum.reset();
for (var i = 0, n = polygon.length; i < n; ++i) {
var ring = polygon[i], m = ring.length;
if (!m) continue;
var point0 = ring[0], λ0 = point0[0], φ0 = point0[1] / 2 + π / 4, sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), j = 1;
while (true) {
if (j === m) j = 0;
point = ring[j];
var λ = point[0], φ = point[1] / 2 + π / 4, sinφ = Math.sin(φ), cosφ = Math.cos(φ), dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, antimeridian = adλ > π, k = sinφ0 * sinφ;
d3_geo_areaRingSum.add(Math.atan2(k * sdλ * Math.sin(adλ), cosφ0 * cosφ + k * Math.cos(adλ)));
polarAngle += antimeridian ? dλ + sdλ * τ : dλ;
if (antimeridian ^ λ0 >= meridian ^ λ >= meridian) {
var arc = d3_geo_cartesianCross(d3_geo_cartesian(point0), d3_geo_cartesian(point));
d3_geo_cartesianNormalize(arc);
var intersection = d3_geo_cartesianCross(meridianNormal, arc);
d3_geo_cartesianNormalize(intersection);
var φarc = (antimeridian ^ dλ >= 0 ? -1 : 1) * d3_asin(intersection[2]);
if (parallel > φarc || parallel === φarc && (arc[0] || arc[1])) {
winding += antimeridian ^ dλ >= 0 ? 1 : -1;
}
}
if (!j++) break;
λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
}
}
return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < -ε) ^ winding & 1;
}
function d3_geo_clipCircle(radius) {
var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
return d3_geo_clip(visible, clipLine, interpolate, smallRadius ? [ 0, -radius ] : [ -π, radius - π ]);
function visible(λ, φ) {
return Math.cos(λ) * Math.cos(φ) > cr;
}
function clipLine(listener) {
var point0, c0, v0, v00, clean;
return {
lineStart: function() {
v00 = v0 = false;
clean = 1;
},
point: function(λ, φ) {
var point1 = [ λ, φ ], point2, v = visible(λ, φ), c = smallRadius ? v ? 0 : code(λ, φ) : v ? code(λ + (λ < 0 ? π : -π), φ) : 0;
if (!point0 && (v00 = v0 = v)) listener.lineStart();
if (v !== v0) {
point2 = intersect(point0, point1);
if (d3_geo_sphericalEqual(point0, point2) || d3_geo_sphericalEqual(point1, point2)) {
point1[0] += ε;
point1[1] += ε;
v = visible(point1[0], point1[1]);
}
}
if (v !== v0) {
clean = 0;
if (v) {
listener.lineStart();
point2 = intersect(point1, point0);
listener.point(point2[0], point2[1]);
} else {
point2 = intersect(point0, point1);
listener.point(point2[0], point2[1]);
listener.lineEnd();
}
point0 = point2;
} else if (notHemisphere && point0 && smallRadius ^ v) {
var t;
if (!(c & c0) && (t = intersect(point1, point0, true))) {
clean = 0;
if (smallRadius) {
listener.lineStart();
listener.point(t[0][0], t[0][1]);
listener.point(t[1][0], t[1][1]);
listener.lineEnd();
} else {
listener.point(t[1][0], t[1][1]);
listener.lineEnd();
listener.lineStart();
listener.point(t[0][0], t[0][1]);
}
}
}
if (v && (!point0 || !d3_geo_sphericalEqual(point0, point1))) {
listener.point(point1[0], point1[1]);
}
point0 = point1, v0 = v, c0 = c;
},
lineEnd: function() {
if (v0) listener.lineEnd();
point0 = null;
},
clean: function() {
return clean | (v00 && v0) << 1;
}
};
}
function intersect(a, b, two) {
var pa = d3_geo_cartesian(a), pb = d3_geo_cartesian(b);
var n1 = [ 1, 0, 0 ], n2 = d3_geo_cartesianCross(pa, pb), n2n2 = d3_geo_cartesianDot(n2, n2), n1n2 = n2[0], determinant = n2n2 - n1n2 * n1n2;
if (!determinant) return !two && a;
var c1 = cr * n2n2 / determinant, c2 = -cr * n1n2 / determinant, n1xn2 = d3_geo_cartesianCross(n1, n2), A = d3_geo_cartesianScale(n1, c1), B = d3_geo_cartesianScale(n2, c2);
d3_geo_cartesianAdd(A, B);
var u = n1xn2, w = d3_geo_cartesianDot(A, u), uu = d3_geo_cartesianDot(u, u), t2 = w * w - uu * (d3_geo_cartesianDot(A, A) - 1);
if (t2 < 0) return;
var t = Math.sqrt(t2), q = d3_geo_cartesianScale(u, (-w - t) / uu);
d3_geo_cartesianAdd(q, A);
q = d3_geo_spherical(q);
if (!two) return q;
var λ0 = a[0], λ1 = b[0], φ0 = a[1], φ1 = b[1], z;
if (λ1 < λ0) z = λ0, λ0 = λ1, λ1 = z;
var δλ = λ1 - λ0, polar = abs(δλ - π) < ε, meridian = polar || δλ < ε;
if (!polar && φ1 < φ0) z = φ0, φ0 = φ1, φ1 = z;
if (meridian ? polar ? φ0 + φ1 > 0 ^ q[1] < (abs(q[0] - λ0) < ε ? φ0 : φ1) : φ0 <= q[1] && q[1] <= φ1 : δλ > π ^ (λ0 <= q[0] && q[0] <= λ1)) {
var q1 = d3_geo_cartesianScale(u, (-w + t) / uu);
d3_geo_cartesianAdd(q1, A);
return [ q, d3_geo_spherical(q1) ];
}
}
function code(λ, φ) {
var r = smallRadius ? radius : π - radius, code = 0;
if (λ < -r) code |= 1; else if (λ > r) code |= 2;
if (φ < -r) code |= 4; else if (φ > r) code |= 8;
return code;
}
}
function d3_geom_clipLine(x0, y0, x1, y1) {
return function(line) {
var a = line.a, b = line.b, ax = a.x, ay = a.y, bx = b.x, by = b.y, t0 = 0, t1 = 1, dx = bx - ax, dy = by - ay, r;
r = x0 - ax;
if (!dx && r > 0) return;
r /= dx;
if (dx < 0) {
if (r < t0) return;
if (r < t1) t1 = r;
} else if (dx > 0) {
if (r > t1) return;
if (r > t0) t0 = r;
}
r = x1 - ax;
if (!dx && r < 0) return;
r /= dx;
if (dx < 0) {
if (r > t1) return;
if (r > t0) t0 = r;
} else if (dx > 0) {
if (r < t0) return;
if (r < t1) t1 = r;
}
r = y0 - ay;
if (!dy && r > 0) return;
r /= dy;
if (dy < 0) {
if (r < t0) return;
if (r < t1) t1 = r;
} else if (dy > 0) {
if (r > t1) return;
if (r > t0) t0 = r;
}
r = y1 - ay;
if (!dy && r < 0) return;
r /= dy;
if (dy < 0) {
if (r > t1) return;
if (r > t0) t0 = r;
} else if (dy > 0) {
if (r < t0) return;
if (r < t1) t1 = r;
}
if (t0 > 0) line.a = {
x: ax + t0 * dx,
y: ay + t0 * dy
};
if (t1 < 1) line.b = {
x: ax + t1 * dx,
y: ay + t1 * dy
};
return line;
};
}
var d3_geo_clipExtentMAX = 1e9;
d3.geo.clipExtent = function() {
var x0, y0, x1, y1, stream, clip, clipExtent = {
stream: function(output) {
if (stream) stream.valid = false;
stream = clip(output);
stream.valid = true;
return stream;
},
extent: function(_) {
if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
clip = d3_geo_clipExtent(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]);
if (stream) stream.valid = false, stream = null;
return clipExtent;
}
};
return clipExtent.extent([ [ 0, 0 ], [ 960, 500 ] ]);
};
function d3_geo_clipExtent(x0, y0, x1, y1) {
return function(listener) {
var listener_ = listener, bufferListener = d3_geo_clipBufferListener(), clipLine = d3_geom_clipLine(x0, y0, x1, y1), segments, polygon, ring;
var clip = {
point: point,
lineStart: lineStart,
lineEnd: lineEnd,
polygonStart: function() {
listener = bufferListener;
segments = [];
polygon = [];
clean = true;
},
polygonEnd: function() {
listener = listener_;
segments = d3.merge(segments);
var clipStartInside = insidePolygon([ x0, y1 ]), inside = clean && clipStartInside, visible = segments.length;
if (inside || visible) {
listener.polygonStart();
if (inside) {
listener.lineStart();
interpolate(null, null, 1, listener);
listener.lineEnd();
}
if (visible) {
d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener);
}
listener.polygonEnd();
}
segments = polygon = ring = null;
}
};
function insidePolygon(p) {
var wn = 0, n = polygon.length, y = p[1];
for (var i = 0; i < n; ++i) {
for (var j = 1, v = polygon[i], m = v.length, a = v[0], b; j < m; ++j) {
b = v[j];
if (a[1] <= y) {
if (b[1] > y && d3_cross2d(a, b, p) > 0) ++wn;
} else {
if (b[1] <= y && d3_cross2d(a, b, p) < 0) --wn;
}
a = b;
}
}
return wn !== 0;
}
function interpolate(from, to, direction, listener) {
var a = 0, a1 = 0;
if (from == null || (a = corner(from, direction)) !== (a1 = corner(to, direction)) || comparePoints(from, to) < 0 ^ direction > 0) {
do {
listener.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0);
} while ((a = (a + direction + 4) % 4) !== a1);
} else {
listener.point(to[0], to[1]);
}
}
function pointVisible(x, y) {
return x0 <= x && x <= x1 && y0 <= y && y <= y1;
}
function point(x, y) {
if (pointVisible(x, y)) listener.point(x, y);
}
var x__, y__, v__, x_, y_, v_, first, clean;
function lineStart() {
clip.point = linePoint;
if (polygon) polygon.push(ring = []);
first = true;
v_ = false;
x_ = y_ = NaN;
}
function lineEnd() {
if (segments) {
linePoint(x__, y__);
if (v__ && v_) bufferListener.rejoin();
segments.push(bufferListener.buffer());
}
clip.point = point;
if (v_) listener.lineEnd();
}
function linePoint(x, y) {
x = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, x));
y = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, y));
var v = pointVisible(x, y);
if (polygon) ring.push([ x, y ]);
if (first) {
x__ = x, y__ = y, v__ = v;
first = false;
if (v) {
listener.lineStart();
listener.point(x, y);
}
} else {
if (v && v_) listener.point(x, y); else {
var l = {
a: {
x: x_,
y: y_
},
b: {
x: x,
y: y
}
};
if (clipLine(l)) {
if (!v_) {
listener.lineStart();
listener.point(l.a.x, l.a.y);
}
listener.point(l.b.x, l.b.y);
if (!v) listener.lineEnd();
clean = false;
} else if (v) {
listener.lineStart();
listener.point(x, y);
clean = false;
}
}
}
x_ = x, y_ = y, v_ = v;
}
return clip;
};
function corner(p, direction) {
return abs(p[0] - x0) < ε ? direction > 0 ? 0 : 3 : abs(p[0] - x1) < ε ? direction > 0 ? 2 : 1 : abs(p[1] - y0) < ε ? direction > 0 ? 1 : 0 : direction > 0 ? 3 : 2;
}
function compare(a, b) {
return comparePoints(a.x, b.x);
}
function comparePoints(a, b) {
var ca = corner(a, 1), cb = corner(b, 1);
return ca !== cb ? ca - cb : ca === 0 ? b[1] - a[1] : ca === 1 ? a[0] - b[0] : ca === 2 ? a[1] - b[1] : b[0] - a[0];
}
}
function d3_geo_conic(projectAt) {
var φ0 = 0, φ1 = π / 3, m = d3_geo_projectionMutator(projectAt), p = m(φ0, φ1);
p.parallels = function(_) {
if (!arguments.length) return [ φ0 / π * 180, φ1 / π * 180 ];
return m(φ0 = _[0] * π / 180, φ1 = _[1] * π / 180);
};
return p;
}
function d3_geo_conicEqualArea(φ0, φ1) {
var sinφ0 = Math.sin(φ0), n = (sinφ0 + Math.sin(φ1)) / 2, C = 1 + sinφ0 * (2 * n - sinφ0), ρ0 = Math.sqrt(C) / n;
function forward(λ, φ) {
var ρ = Math.sqrt(C - 2 * n * Math.sin(φ)) / n;
return [ ρ * Math.sin(λ *= n), ρ0 - ρ * Math.cos(λ) ];
}
forward.invert = function(x, y) {
var ρ0_y = ρ0 - y;
return [ Math.atan2(x, ρ0_y) / n, d3_asin((C - (x * x + ρ0_y * ρ0_y) * n * n) / (2 * n)) ];
};
return forward;
}
(d3.geo.conicEqualArea = function() {
return d3_geo_conic(d3_geo_conicEqualArea);
}).raw = d3_geo_conicEqualArea;
d3.geo.albers = function() {
return d3.geo.conicEqualArea().rotate([ 96, 0 ]).center([ -.6, 38.7 ]).parallels([ 29.5, 45.5 ]).scale(1070);
};
d3.geo.albersUsa = function() {
var lower48 = d3.geo.albers();
var alaska = d3.geo.conicEqualArea().rotate([ 154, 0 ]).center([ -2, 58.5 ]).parallels([ 55, 65 ]);
var hawaii = d3.geo.conicEqualArea().rotate([ 157, 0 ]).center([ -3, 19.9 ]).parallels([ 8, 18 ]);
var point, pointStream = {
point: function(x, y) {
point = [ x, y ];
}
}, lower48Point, alaskaPoint, hawaiiPoint;
function albersUsa(coordinates) {
var x = coordinates[0], y = coordinates[1];
point = null;
(lower48Point(x, y), point) || (alaskaPoint(x, y), point) || hawaiiPoint(x, y);
return point;
}
albersUsa.invert = function(coordinates) {
var k = lower48.scale(), t = lower48.translate(), x = (coordinates[0] - t[0]) / k, y = (coordinates[1] - t[1]) / k;
return (y >= .12 && y < .234 && x >= -.425 && x < -.214 ? alaska : y >= .166 && y < .234 && x >= -.214 && x < -.115 ? hawaii : lower48).invert(coordinates);
};
albersUsa.stream = function(stream) {
var lower48Stream = lower48.stream(stream), alaskaStream = alaska.stream(stream), hawaiiStream = hawaii.stream(stream);
return {
point: function(x, y) {
lower48Stream.point(x, y);
alaskaStream.point(x, y);
hawaiiStream.point(x, y);
},
sphere: function() {
lower48Stream.sphere();
alaskaStream.sphere();
hawaiiStream.sphere();
},
lineStart: function() {
lower48Stream.lineStart();
alaskaStream.lineStart();
hawaiiStream.lineStart();
},
lineEnd: function() {
lower48Stream.lineEnd();
alaskaStream.lineEnd();
hawaiiStream.lineEnd();
},
polygonStart: function() {
lower48Stream.polygonStart();
alaskaStream.polygonStart();
hawaiiStream.polygonStart();
},
polygonEnd: function() {
lower48Stream.polygonEnd();
alaskaStream.polygonEnd();
hawaiiStream.polygonEnd();
}
};
};
albersUsa.precision = function(_) {
if (!arguments.length) return lower48.precision();
lower48.precision(_);
alaska.precision(_);
hawaii.precision(_);
return albersUsa;
};
albersUsa.scale = function(_) {
if (!arguments.length) return lower48.scale();
lower48.scale(_);
alaska.scale(_ * .35);
hawaii.scale(_);
return albersUsa.translate(lower48.translate());
};
albersUsa.translate = function(_) {
if (!arguments.length) return lower48.translate();
var k = lower48.scale(), x = +_[0], y = +_[1];
lower48Point = lower48.translate(_).clipExtent([ [ x - .455 * k, y - .238 * k ], [ x + .455 * k, y + .238 * k ] ]).stream(pointStream).point;
alaskaPoint = alaska.translate([ x - .307 * k, y + .201 * k ]).clipExtent([ [ x - .425 * k + ε, y + .12 * k + ε ], [ x - .214 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
hawaiiPoint = hawaii.translate([ x - .205 * k, y + .212 * k ]).clipExtent([ [ x - .214 * k + ε, y + .166 * k + ε ], [ x - .115 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
return albersUsa;
};
return albersUsa.scale(1070);
};
var d3_geo_pathAreaSum, d3_geo_pathAreaPolygon, d3_geo_pathArea = {
point: d3_noop,
lineStart: d3_noop,
lineEnd: d3_noop,
polygonStart: function() {
d3_geo_pathAreaPolygon = 0;
d3_geo_pathArea.lineStart = d3_geo_pathAreaRingStart;
},
polygonEnd: function() {
d3_geo_pathArea.lineStart = d3_geo_pathArea.lineEnd = d3_geo_pathArea.point = d3_noop;
d3_geo_pathAreaSum += abs(d3_geo_pathAreaPolygon / 2);
}
};
function d3_geo_pathAreaRingStart() {
var x00, y00, x0, y0;
d3_geo_pathArea.point = function(x, y) {
d3_geo_pathArea.point = nextPoint;
x00 = x0 = x, y00 = y0 = y;
};
function nextPoint(x, y) {
d3_geo_pathAreaPolygon += y0 * x - x0 * y;
x0 = x, y0 = y;
}
d3_geo_pathArea.lineEnd = function() {
nextPoint(x00, y00);
};
}
var d3_geo_pathBoundsX0, d3_geo_pathBoundsY0, d3_geo_pathBoundsX1, d3_geo_pathBoundsY1;
var d3_geo_pathBounds = {
point: d3_geo_pathBoundsPoint,
lineStart: d3_noop,
lineEnd: d3_noop,
polygonStart: d3_noop,
polygonEnd: d3_noop
};
function d3_geo_pathBoundsPoint(x, y) {
if (x < d3_geo_pathBoundsX0) d3_geo_pathBoundsX0 = x;
if (x > d3_geo_pathBoundsX1) d3_geo_pathBoundsX1 = x;
if (y < d3_geo_pathBoundsY0) d3_geo_pathBoundsY0 = y;
if (y > d3_geo_pathBoundsY1) d3_geo_pathBoundsY1 = y;
}
function d3_geo_pathBuffer() {
var pointCircle = d3_geo_pathBufferCircle(4.5), buffer = [];
var stream = {
point: point,
lineStart: function() {
stream.point = pointLineStart;
},
lineEnd: lineEnd,
polygonStart: function() {
stream.lineEnd = lineEndPolygon;
},
polygonEnd: function() {
stream.lineEnd = lineEnd;
stream.point = point;
},
pointRadius: function(_) {
pointCircle = d3_geo_pathBufferCircle(_);
return stream;
},
result: function() {
if (buffer.length) {
var result = buffer.join("");
buffer = [];
return result;
}
}
};
function point(x, y) {
buffer.push("M", x, ",", y, pointCircle);
}
function pointLineStart(x, y) {
buffer.push("M", x, ",", y);
stream.point = pointLine;
}
function pointLine(x, y) {
buffer.push("L", x, ",", y);
}
function lineEnd() {
stream.point = point;
}
function lineEndPolygon() {
buffer.push("Z");
}
return stream;
}
function d3_geo_pathBufferCircle(radius) {
return "m0," + radius + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius + "z";
}
var d3_geo_pathCentroid = {
point: d3_geo_pathCentroidPoint,
lineStart: d3_geo_pathCentroidLineStart,
lineEnd: d3_geo_pathCentroidLineEnd,
polygonStart: function() {
d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidRingStart;
},
polygonEnd: function() {
d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidLineStart;
d3_geo_pathCentroid.lineEnd = d3_geo_pathCentroidLineEnd;
}
};
function d3_geo_pathCentroidPoint(x, y) {
d3_geo_centroidX0 += x;
d3_geo_centroidY0 += y;
++d3_geo_centroidZ0;
}
function d3_geo_pathCentroidLineStart() {
var x0, y0;
d3_geo_pathCentroid.point = function(x, y) {
d3_geo_pathCentroid.point = nextPoint;
d3_geo_pathCentroidPoint(x0 = x, y0 = y);
};
function nextPoint(x, y) {
var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
d3_geo_centroidX1 += z * (x0 + x) / 2;
d3_geo_centroidY1 += z * (y0 + y) / 2;
d3_geo_centroidZ1 += z;
d3_geo_pathCentroidPoint(x0 = x, y0 = y);
}
}
function d3_geo_pathCentroidLineEnd() {
d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
}
function d3_geo_pathCentroidRingStart() {
var x00, y00, x0, y0;
d3_geo_pathCentroid.point = function(x, y) {
d3_geo_pathCentroid.point = nextPoint;
d3_geo_pathCentroidPoint(x00 = x0 = x, y00 = y0 = y);
};
function nextPoint(x, y) {
var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
d3_geo_centroidX1 += z * (x0 + x) / 2;
d3_geo_centroidY1 += z * (y0 + y) / 2;
d3_geo_centroidZ1 += z;
z = y0 * x - x0 * y;
d3_geo_centroidX2 += z * (x0 + x);
d3_geo_centroidY2 += z * (y0 + y);
d3_geo_centroidZ2 += z * 3;
d3_geo_pathCentroidPoint(x0 = x, y0 = y);
}
d3_geo_pathCentroid.lineEnd = function() {
nextPoint(x00, y00);
};
}
function d3_geo_pathContext(context) {
var pointRadius = 4.5;
var stream = {
point: point,
lineStart: function() {
stream.point = pointLineStart;
},
lineEnd: lineEnd,
polygonStart: function() {
stream.lineEnd = lineEndPolygon;
},
polygonEnd: function() {
stream.lineEnd = lineEnd;
stream.point = point;
},
pointRadius: function(_) {
pointRadius = _;
return stream;
},
result: d3_noop
};
function point(x, y) {
context.moveTo(x + pointRadius, y);
context.arc(x, y, pointRadius, 0, τ);
}
function pointLineStart(x, y) {
context.moveTo(x, y);
stream.point = pointLine;
}
function pointLine(x, y) {
context.lineTo(x, y);
}
function lineEnd() {
stream.point = point;
}
function lineEndPolygon() {
context.closePath();
}
return stream;
}
function d3_geo_resample(project) {
var δ2 = .5, cosMinDistance = Math.cos(30 * d3_radians), maxDepth = 16;
function resample(stream) {
return (maxDepth ? resampleRecursive : resampleNone)(stream);
}
function resampleNone(stream) {
return d3_geo_transformPoint(stream, function(x, y) {
x = project(x, y);
stream.point(x[0], x[1]);
});
}
function resampleRecursive(stream) {
var λ00, φ00, x00, y00, a00, b00, c00, λ0, x0, y0, a0, b0, c0;
var resample = {
point: point,
lineStart: lineStart,
lineEnd: lineEnd,
polygonStart: function() {
stream.polygonStart();
resample.lineStart = ringStart;
},
polygonEnd: function() {
stream.polygonEnd();
resample.lineStart = lineStart;
}
};
function point(x, y) {
x = project(x, y);
stream.point(x[0], x[1]);
}
function lineStart() {
x0 = NaN;
resample.point = linePoint;
stream.lineStart();
}
function linePoint(λ, φ) {
var c = d3_geo_cartesian([ λ, φ ]), p = project(λ, φ);
resampleLineTo(x0, y0, λ0, a0, b0, c0, x0 = p[0], y0 = p[1], λ0 = λ, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream);
stream.point(x0, y0);
}
function lineEnd() {
resample.point = point;
stream.lineEnd();
}
function ringStart() {
lineStart();
resample.point = ringPoint;
resample.lineEnd = ringEnd;
}
function ringPoint(λ, φ) {
linePoint(λ00 = λ, φ00 = φ), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
resample.point = linePoint;
}
function ringEnd() {
resampleLineTo(x0, y0, λ0, a0, b0, c0, x00, y00, λ00, a00, b00, c00, maxDepth, stream);
resample.lineEnd = lineEnd;
lineEnd();
}
return resample;
}
function resampleLineTo(x0, y0, λ0, a0, b0, c0, x1, y1, λ1, a1, b1, c1, depth, stream) {
var dx = x1 - x0, dy = y1 - y0, d2 = dx * dx + dy * dy;
if (d2 > 4 * δ2 && depth--) {
var a = a0 + a1, b = b0 + b1, c = c0 + c1, m = Math.sqrt(a * a + b * b + c * c), φ2 = Math.asin(c /= m), λ2 = abs(abs(c) - 1) < ε || abs(λ0 - λ1) < ε ? (λ0 + λ1) / 2 : Math.atan2(b, a), p = project(λ2, φ2), x2 = p[0], y2 = p[1], dx2 = x2 - x0, dy2 = y2 - y0, dz = dy * dx2 - dx * dy2;
if (dz * dz / d2 > δ2 || abs((dx * dx2 + dy * dy2) / d2 - .5) > .3 || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) {
resampleLineTo(x0, y0, λ0, a0, b0, c0, x2, y2, λ2, a /= m, b /= m, c, depth, stream);
stream.point(x2, y2);
resampleLineTo(x2, y2, λ2, a, b, c, x1, y1, λ1, a1, b1, c1, depth, stream);
}
}
}
resample.precision = function(_) {
if (!arguments.length) return Math.sqrt(δ2);
maxDepth = (δ2 = _ * _) > 0 && 16;
return resample;
};
return resample;
}
d3.geo.path = function() {
var pointRadius = 4.5, projection, context, projectStream, contextStream, cacheStream;
function path(object) {
if (object) {
if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments));
if (!cacheStream || !cacheStream.valid) cacheStream = projectStream(contextStream);
d3.geo.stream(object, cacheStream);
}
return contextStream.result();
}
path.area = function(object) {
d3_geo_pathAreaSum = 0;
d3.geo.stream(object, projectStream(d3_geo_pathArea));
return d3_geo_pathAreaSum;
};
path.centroid = function(object) {
d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
d3.geo.stream(object, projectStream(d3_geo_pathCentroid));
return d3_geo_centroidZ2 ? [ d3_geo_centroidX2 / d3_geo_centroidZ2, d3_geo_centroidY2 / d3_geo_centroidZ2 ] : d3_geo_centroidZ1 ? [ d3_geo_centroidX1 / d3_geo_centroidZ1, d3_geo_centroidY1 / d3_geo_centroidZ1 ] : d3_geo_centroidZ0 ? [ d3_geo_centroidX0 / d3_geo_centroidZ0, d3_geo_centroidY0 / d3_geo_centroidZ0 ] : [ NaN, NaN ];
};
path.bounds = function(object) {
d3_geo_pathBoundsX1 = d3_geo_pathBoundsY1 = -(d3_geo_pathBoundsX0 = d3_geo_pathBoundsY0 = Infinity);
d3.geo.stream(object, projectStream(d3_geo_pathBounds));
return [ [ d3_geo_pathBoundsX0, d3_geo_pathBoundsY0 ], [ d3_geo_pathBoundsX1, d3_geo_pathBoundsY1 ] ];
};
path.projection = function(_) {
if (!arguments.length) return projection;
projectStream = (projection = _) ? _.stream || d3_geo_pathProjectStream(_) : d3_identity;
return reset();
};
path.context = function(_) {
if (!arguments.length) return context;
contextStream = (context = _) == null ? new d3_geo_pathBuffer() : new d3_geo_pathContext(_);
if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius);
return reset();
};
path.pointRadius = function(_) {
if (!arguments.length) return pointRadius;
pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_);
return path;
};
function reset() {
cacheStream = null;
return path;
}
return path.projection(d3.geo.albersUsa()).context(null);
};
function d3_geo_pathProjectStream(project) {
var resample = d3_geo_resample(function(x, y) {
return project([ x * d3_degrees, y * d3_degrees ]);
});
return function(stream) {
return d3_geo_projectionRadians(resample(stream));
};
}
d3.geo.transform = function(methods) {
return {
stream: function(stream) {
var transform = new d3_geo_transform(stream);
for (var k in methods) transform[k] = methods[k];
return transform;
}
};
};
function d3_geo_transform(stream) {
this.stream = stream;
}
d3_geo_transform.prototype = {
point: function(x, y) {
this.stream.point(x, y);
},
sphere: function() {
this.stream.sphere();
},
lineStart: function() {
this.stream.lineStart();
},
lineEnd: function() {
this.stream.lineEnd();
},
polygonStart: function() {
this.stream.polygonStart();
},
polygonEnd: function() {
this.stream.polygonEnd();
}
};
function d3_geo_transformPoint(stream, point) {
return {
point: point,
sphere: function() {
stream.sphere();
},
lineStart: function() {
stream.lineStart();
},
lineEnd: function() {
stream.lineEnd();
},
polygonStart: function() {
stream.polygonStart();
},
polygonEnd: function() {
stream.polygonEnd();
}
};
}
d3.geo.projection = d3_geo_projection;
d3.geo.projectionMutator = d3_geo_projectionMutator;
function d3_geo_projection(project) {
return d3_geo_projectionMutator(function() {
return project;
})();
}
function d3_geo_projectionMutator(projectAt) {
var project, rotate, projectRotate, projectResample = d3_geo_resample(function(x, y) {
x = project(x, y);
return [ x[0] * k + δx, δy - x[1] * k ];
}), k = 150, x = 480, y = 250, λ = 0, φ = 0, δλ = 0, δφ = 0, δγ = 0, δx, δy, preclip = d3_geo_clipAntimeridian, postclip = d3_identity, clipAngle = null, clipExtent = null, stream;
function projection(point) {
point = projectRotate(point[0] * d3_radians, point[1] * d3_radians);
return [ point[0] * k + δx, δy - point[1] * k ];
}
function invert(point) {
point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k);
return point && [ point[0] * d3_degrees, point[1] * d3_degrees ];
}
projection.stream = function(output) {
if (stream) stream.valid = false;
stream = d3_geo_projectionRadians(preclip(rotate, projectResample(postclip(output))));
stream.valid = true;
return stream;
};
projection.clipAngle = function(_) {
if (!arguments.length) return clipAngle;
preclip = _ == null ? (clipAngle = _, d3_geo_clipAntimeridian) : d3_geo_clipCircle((clipAngle = +_) * d3_radians);
return invalidate();
};
projection.clipExtent = function(_) {
if (!arguments.length) return clipExtent;
clipExtent = _;
postclip = _ ? d3_geo_clipExtent(_[0][0], _[0][1], _[1][0], _[1][1]) : d3_identity;
return invalidate();
};
projection.scale = function(_) {
if (!arguments.length) return k;
k = +_;
return reset();
};
projection.translate = function(_) {
if (!arguments.length) return [ x, y ];
x = +_[0];
y = +_[1];
return reset();
};
projection.center = function(_) {
if (!arguments.length) return [ λ * d3_degrees, φ * d3_degrees ];
λ = _[0] % 360 * d3_radians;
φ = _[1] % 360 * d3_radians;
return reset();
};
projection.rotate = function(_) {
if (!arguments.length) return [ δλ * d3_degrees, δφ * d3_degrees, δγ * d3_degrees ];
δλ = _[0] % 360 * d3_radians;
δφ = _[1] % 360 * d3_radians;
δγ = _.length > 2 ? _[2] % 360 * d3_radians : 0;
return reset();
};
d3.rebind(projection, projectResample, "precision");
function reset() {
projectRotate = d3_geo_compose(rotate = d3_geo_rotation(δλ, δφ, δγ), project);
var center = project(λ, φ);
δx = x - center[0] * k;
δy = y + center[1] * k;
return invalidate();
}
function invalidate() {
if (stream) stream.valid = false, stream = null;
return projection;
}
return function() {
project = projectAt.apply(this, arguments);
projection.invert = project.invert && invert;
return reset();
};
}
function d3_geo_projectionRadians(stream) {
return d3_geo_transformPoint(stream, function(x, y) {
stream.point(x * d3_radians, y * d3_radians);
});
}
function d3_geo_equirectangular(λ, φ) {
return [ λ, φ ];
}
(d3.geo.equirectangular = function() {
return d3_geo_projection(d3_geo_equirectangular);
}).raw = d3_geo_equirectangular.invert = d3_geo_equirectangular;
d3.geo.rotation = function(rotate) {
rotate = d3_geo_rotation(rotate[0] % 360 * d3_radians, rotate[1] * d3_radians, rotate.length > 2 ? rotate[2] * d3_radians : 0);
function forward(coordinates) {
coordinates = rotate(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
}
forward.invert = function(coordinates) {
coordinates = rotate.invert(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
};
return forward;
};
function d3_geo_identityRotation(λ, φ) {
return [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
}
d3_geo_identityRotation.invert = d3_geo_equirectangular;
function d3_geo_rotation(δλ, δφ, δγ) {
return δλ ? δφ || δγ ? d3_geo_compose(d3_geo_rotationλ(δλ), d3_geo_rotationφγ(δφ, δγ)) : d3_geo_rotationλ(δλ) : δφ || δγ ? d3_geo_rotationφγ(δφ, δγ) : d3_geo_identityRotation;
}
function d3_geo_forwardRotationλ(δλ) {
return function(λ, φ) {
return λ += δλ, [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
};
}
function d3_geo_rotationλ(δλ) {
var rotation = d3_geo_forwardRotationλ(δλ);
rotation.invert = d3_geo_forwardRotationλ(-δλ);
return rotation;
}
function d3_geo_rotationφγ(δφ, δγ) {
var cosδφ = Math.cos(δφ), sinδφ = Math.sin(δφ), cosδγ = Math.cos(δγ), sinδγ = Math.sin(δγ);
function rotation(λ, φ) {
var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδφ + x * sinδφ;
return [ Math.atan2(y * cosδγ - k * sinδγ, x * cosδφ - z * sinδφ), d3_asin(k * cosδγ + y * sinδγ) ];
}
rotation.invert = function(λ, φ) {
var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδγ - y * sinδγ;
return [ Math.atan2(y * cosδγ + z * sinδγ, x * cosδφ + k * sinδφ), d3_asin(k * cosδφ - x * sinδφ) ];
};
return rotation;
}
d3.geo.circle = function() {
var origin = [ 0, 0 ], angle, precision = 6, interpolate;
function circle() {
var center = typeof origin === "function" ? origin.apply(this, arguments) : origin, rotate = d3_geo_rotation(-center[0] * d3_radians, -center[1] * d3_radians, 0).invert, ring = [];
interpolate(null, null, 1, {
point: function(x, y) {
ring.push(x = rotate(x, y));
x[0] *= d3_degrees, x[1] *= d3_degrees;
}
});
return {
type: "Polygon",
coordinates: [ ring ]
};
}
circle.origin = function(x) {
if (!arguments.length) return origin;
origin = x;
return circle;
};
circle.angle = function(x) {
if (!arguments.length) return angle;
interpolate = d3_geo_circleInterpolate((angle = +x) * d3_radians, precision * d3_radians);
return circle;
};
circle.precision = function(_) {
if (!arguments.length) return precision;
interpolate = d3_geo_circleInterpolate(angle * d3_radians, (precision = +_) * d3_radians);
return circle;
};
return circle.angle(90);
};
function d3_geo_circleInterpolate(radius, precision) {
var cr = Math.cos(radius), sr = Math.sin(radius);
return function(from, to, direction, listener) {
var step = direction * precision;
if (from != null) {
from = d3_geo_circleAngle(cr, from);
to = d3_geo_circleAngle(cr, to);
if (direction > 0 ? from < to : from > to) from += direction * τ;
} else {
from = radius + direction * τ;
to = radius - .5 * step;
}
for (var point, t = from; direction > 0 ? t > to : t < to; t -= step) {
listener.point((point = d3_geo_spherical([ cr, -sr * Math.cos(t), -sr * Math.sin(t) ]))[0], point[1]);
}
};
}
function d3_geo_circleAngle(cr, point) {
var a = d3_geo_cartesian(point);
a[0] -= cr;
d3_geo_cartesianNormalize(a);
var angle = d3_acos(-a[1]);
return ((-a[2] < 0 ? -angle : angle) + 2 * Math.PI - ε) % (2 * Math.PI);
}
d3.geo.distance = function(a, b) {
var Δλ = (b[0] - a[0]) * d3_radians, φ0 = a[1] * d3_radians, φ1 = b[1] * d3_radians, sinΔλ = Math.sin(Δλ), cosΔλ = Math.cos(Δλ), sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), sinφ1 = Math.sin(φ1), cosφ1 = Math.cos(φ1), t;
return Math.atan2(Math.sqrt((t = cosφ1 * sinΔλ) * t + (t = cosφ0 * sinφ1 - sinφ0 * cosφ1 * cosΔλ) * t), sinφ0 * sinφ1 + cosφ0 * cosφ1 * cosΔλ);
};
d3.geo.graticule = function() {
var x1, x0, X1, X0, y1, y0, Y1, Y0, dx = 10, dy = dx, DX = 90, DY = 360, x, y, X, Y, precision = 2.5;
function graticule() {
return {
type: "MultiLineString",
coordinates: lines()
};
}
function lines() {
return d3.range(Math.ceil(X0 / DX) * DX, X1, DX).map(X).concat(d3.range(Math.ceil(Y0 / DY) * DY, Y1, DY).map(Y)).concat(d3.range(Math.ceil(x0 / dx) * dx, x1, dx).filter(function(x) {
return abs(x % DX) > ε;
}).map(x)).concat(d3.range(Math.ceil(y0 / dy) * dy, y1, dy).filter(function(y) {
return abs(y % DY) > ε;
}).map(y));
}
graticule.lines = function() {
return lines().map(function(coordinates) {
return {
type: "LineString",
coordinates: coordinates
};
});
};
graticule.outline = function() {
return {
type: "Polygon",
coordinates: [ X(X0).concat(Y(Y1).slice(1), X(X1).reverse().slice(1), Y(Y0).reverse().slice(1)) ]
};
};
graticule.extent = function(_) {
if (!arguments.length) return graticule.minorExtent();
return graticule.majorExtent(_).minorExtent(_);
};
graticule.majorExtent = function(_) {
if (!arguments.length) return [ [ X0, Y0 ], [ X1, Y1 ] ];
X0 = +_[0][0], X1 = +_[1][0];
Y0 = +_[0][1], Y1 = +_[1][1];
if (X0 > X1) _ = X0, X0 = X1, X1 = _;
if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _;
return graticule.precision(precision);
};
graticule.minorExtent = function(_) {
if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
x0 = +_[0][0], x1 = +_[1][0];
y0 = +_[0][1], y1 = +_[1][1];
if (x0 > x1) _ = x0, x0 = x1, x1 = _;
if (y0 > y1) _ = y0, y0 = y1, y1 = _;
return graticule.precision(precision);
};
graticule.step = function(_) {
if (!arguments.length) return graticule.minorStep();
return graticule.majorStep(_).minorStep(_);
};
graticule.majorStep = function(_) {
if (!arguments.length) return [ DX, DY ];
DX = +_[0], DY = +_[1];
return graticule;
};
graticule.minorStep = function(_) {
if (!arguments.length) return [ dx, dy ];
dx = +_[0], dy = +_[1];
return graticule;
};
graticule.precision = function(_) {
if (!arguments.length) return precision;
precision = +_;
x = d3_geo_graticuleX(y0, y1, 90);
y = d3_geo_graticuleY(x0, x1, precision);
X = d3_geo_graticuleX(Y0, Y1, 90);
Y = d3_geo_graticuleY(X0, X1, precision);
return graticule;
};
return graticule.majorExtent([ [ -180, -90 + ε ], [ 180, 90 - ε ] ]).minorExtent([ [ -180, -80 - ε ], [ 180, 80 + ε ] ]);
};
function d3_geo_graticuleX(y0, y1, dy) {
var y = d3.range(y0, y1 - ε, dy).concat(y1);
return function(x) {
return y.map(function(y) {
return [ x, y ];
});
};
}
function d3_geo_graticuleY(x0, x1, dx) {
var x = d3.range(x0, x1 - ε, dx).concat(x1);
return function(y) {
return x.map(function(x) {
return [ x, y ];
});
};
}
function d3_source(d) {
return d.source;
}
function d3_target(d) {
return d.target;
}
d3.geo.greatArc = function() {
var source = d3_source, source_, target = d3_target, target_;
function greatArc() {
return {
type: "LineString",
coordinates: [ source_ || source.apply(this, arguments), target_ || target.apply(this, arguments) ]
};
}
greatArc.distance = function() {
return d3.geo.distance(source_ || source.apply(this, arguments), target_ || target.apply(this, arguments));
};
greatArc.source = function(_) {
if (!arguments.length) return source;
source = _, source_ = typeof _ === "function" ? null : _;
return greatArc;
};
greatArc.target = function(_) {
if (!arguments.length) return target;
target = _, target_ = typeof _ === "function" ? null : _;
return greatArc;
};
greatArc.precision = function() {
return arguments.length ? greatArc : 0;
};
return greatArc;
};
d3.geo.interpolate = function(source, target) {
return d3_geo_interpolate(source[0] * d3_radians, source[1] * d3_radians, target[0] * d3_radians, target[1] * d3_radians);
};
function d3_geo_interpolate(x0, y0, x1, y1) {
var cy0 = Math.cos(y0), sy0 = Math.sin(y0), cy1 = Math.cos(y1), sy1 = Math.sin(y1), kx0 = cy0 * Math.cos(x0), ky0 = cy0 * Math.sin(x0), kx1 = cy1 * Math.cos(x1), ky1 = cy1 * Math.sin(x1), d = 2 * Math.asin(Math.sqrt(d3_haversin(y1 - y0) + cy0 * cy1 * d3_haversin(x1 - x0))), k = 1 / Math.sin(d);
var interpolate = d ? function(t) {
var B = Math.sin(t *= d) * k, A = Math.sin(d - t) * k, x = A * kx0 + B * kx1, y = A * ky0 + B * ky1, z = A * sy0 + B * sy1;
return [ Math.atan2(y, x) * d3_degrees, Math.atan2(z, Math.sqrt(x * x + y * y)) * d3_degrees ];
} : function() {
return [ x0 * d3_degrees, y0 * d3_degrees ];
};
interpolate.distance = d;
return interpolate;
}
d3.geo.length = function(object) {
d3_geo_lengthSum = 0;
d3.geo.stream(object, d3_geo_length);
return d3_geo_lengthSum;
};
var d3_geo_lengthSum;
var d3_geo_length = {
sphere: d3_noop,
point: d3_noop,
lineStart: d3_geo_lengthLineStart,
lineEnd: d3_noop,
polygonStart: d3_noop,
polygonEnd: d3_noop
};
function d3_geo_lengthLineStart() {
var λ0, sinφ0, cosφ0;
d3_geo_length.point = function(λ, φ) {
λ0 = λ * d3_radians, sinφ0 = Math.sin(φ *= d3_radians), cosφ0 = Math.cos(φ);
d3_geo_length.point = nextPoint;
};
d3_geo_length.lineEnd = function() {
d3_geo_length.point = d3_geo_length.lineEnd = d3_noop;
};
function nextPoint(λ, φ) {
var sinφ = Math.sin(φ *= d3_radians), cosφ = Math.cos(φ), t = abs((λ *= d3_radians) - λ0), cosΔλ = Math.cos(t);
d3_geo_lengthSum += Math.atan2(Math.sqrt((t = cosφ * Math.sin(t)) * t + (t = cosφ0 * sinφ - sinφ0 * cosφ * cosΔλ) * t), sinφ0 * sinφ + cosφ0 * cosφ * cosΔλ);
λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ;
}
}
function d3_geo_azimuthal(scale, angle) {
function azimuthal(λ, φ) {
var cosλ = Math.cos(λ), cosφ = Math.cos(φ), k = scale(cosλ * cosφ);
return [ k * cosφ * Math.sin(λ), k * Math.sin(φ) ];
}
azimuthal.invert = function(x, y) {
var ρ = Math.sqrt(x * x + y * y), c = angle(ρ), sinc = Math.sin(c), cosc = Math.cos(c);
return [ Math.atan2(x * sinc, ρ * cosc), Math.asin(ρ && y * sinc / ρ) ];
};
return azimuthal;
}
var d3_geo_azimuthalEqualArea = d3_geo_azimuthal(function(cosλcosφ) {
return Math.sqrt(2 / (1 + cosλcosφ));
}, function(ρ) {
return 2 * Math.asin(ρ / 2);
});
(d3.geo.azimuthalEqualArea = function() {
return d3_geo_projection(d3_geo_azimuthalEqualArea);
}).raw = d3_geo_azimuthalEqualArea;
var d3_geo_azimuthalEquidistant = d3_geo_azimuthal(function(cosλcosφ) {
var c = Math.acos(cosλcosφ);
return c && c / Math.sin(c);
}, d3_identity);
(d3.geo.azimuthalEquidistant = function() {
return d3_geo_projection(d3_geo_azimuthalEquidistant);
}).raw = d3_geo_azimuthalEquidistant;
function d3_geo_conicConformal(φ0, φ1) {
var cosφ0 = Math.cos(φ0), t = function(φ) {
return Math.tan(π / 4 + φ / 2);
}, n = φ0 === φ1 ? Math.sin(φ0) : Math.log(cosφ0 / Math.cos(φ1)) / Math.log(t(φ1) / t(φ0)), F = cosφ0 * Math.pow(t(φ0), n) / n;
if (!n) return d3_geo_mercator;
function forward(λ, φ) {
if (F > 0) {
if (φ < -halfπ + ε) φ = -halfπ + ε;
} else {
if (φ > halfπ - ε) φ = halfπ - ε;
}
var ρ = F / Math.pow(t(φ), n);
return [ ρ * Math.sin(n * λ), F - ρ * Math.cos(n * λ) ];
}
forward.invert = function(x, y) {
var ρ0_y = F - y, ρ = d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y);
return [ Math.atan2(x, ρ0_y) / n, 2 * Math.atan(Math.pow(F / ρ, 1 / n)) - halfπ ];
};
return forward;
}
(d3.geo.conicConformal = function() {
return d3_geo_conic(d3_geo_conicConformal);
}).raw = d3_geo_conicConformal;
function d3_geo_conicEquidistant(φ0, φ1) {
var cosφ0 = Math.cos(φ0), n = φ0 === φ1 ? Math.sin(φ0) : (cosφ0 - Math.cos(φ1)) / (φ1 - φ0), G = cosφ0 / n + φ0;
if (abs(n) < ε) return d3_geo_equirectangular;
function forward(λ, φ) {
var ρ = G - φ;
return [ ρ * Math.sin(n * λ), G - ρ * Math.cos(n * λ) ];
}
forward.invert = function(x, y) {
var ρ0_y = G - y;
return [ Math.atan2(x, ρ0_y) / n, G - d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y) ];
};
return forward;
}
(d3.geo.conicEquidistant = function() {
return d3_geo_conic(d3_geo_conicEquidistant);
}).raw = d3_geo_conicEquidistant;
var d3_geo_gnomonic = d3_geo_azimuthal(function(cosλcosφ) {
return 1 / cosλcosφ;
}, Math.atan);
(d3.geo.gnomonic = function() {
return d3_geo_projection(d3_geo_gnomonic);
}).raw = d3_geo_gnomonic;
function d3_geo_mercator(λ, φ) {
return [ λ, Math.log(Math.tan(π / 4 + φ / 2)) ];
}
d3_geo_mercator.invert = function(x, y) {
return [ x, 2 * Math.atan(Math.exp(y)) - halfπ ];
};
function d3_geo_mercatorProjection(project) {
var m = d3_geo_projection(project), scale = m.scale, translate = m.translate, clipExtent = m.clipExtent, clipAuto;
m.scale = function() {
var v = scale.apply(m, arguments);
return v === m ? clipAuto ? m.clipExtent(null) : m : v;
};
m.translate = function() {
var v = translate.apply(m, arguments);
return v === m ? clipAuto ? m.clipExtent(null) : m : v;
};
m.clipExtent = function(_) {
var v = clipExtent.apply(m, arguments);
if (v === m) {
if (clipAuto = _ == null) {
var k = π * scale(), t = translate();
clipExtent([ [ t[0] - k, t[1] - k ], [ t[0] + k, t[1] + k ] ]);
}
} else if (clipAuto) {
v = null;
}
return v;
};
return m.clipExtent(null);
}
(d3.geo.mercator = function() {
return d3_geo_mercatorProjection(d3_geo_mercator);
}).raw = d3_geo_mercator;
var d3_geo_orthographic = d3_geo_azimuthal(function() {
return 1;
}, Math.asin);
(d3.geo.orthographic = function() {
return d3_geo_projection(d3_geo_orthographic);
}).raw = d3_geo_orthographic;
var d3_geo_stereographic = d3_geo_azimuthal(function(cosλcosφ) {
return 1 / (1 + cosλcosφ);
}, function(ρ) {
return 2 * Math.atan(ρ);
});
(d3.geo.stereographic = function() {
return d3_geo_projection(d3_geo_stereographic);
}).raw = d3_geo_stereographic;
function d3_geo_transverseMercator(λ, φ) {
return [ Math.log(Math.tan(π / 4 + φ / 2)), -λ ];
}
d3_geo_transverseMercator.invert = function(x, y) {
return [ -y, 2 * Math.atan(Math.exp(x)) - halfπ ];
};
(d3.geo.transverseMercator = function() {
var projection = d3_geo_mercatorProjection(d3_geo_transverseMercator), center = projection.center, rotate = projection.rotate;
projection.center = function(_) {
return _ ? center([ -_[1], _[0] ]) : (_ = center(), [ _[1], -_[0] ]);
};
projection.rotate = function(_) {
return _ ? rotate([ _[0], _[1], _.length > 2 ? _[2] + 90 : 90 ]) : (_ = rotate(),
[ _[0], _[1], _[2] - 90 ]);
};
return rotate([ 0, 0, 90 ]);
}).raw = d3_geo_transverseMercator;
d3.geom = {};
function d3_geom_pointX(d) {
return d[0];
}
function d3_geom_pointY(d) {
return d[1];
}
d3.geom.hull = function(vertices) {
var x = d3_geom_pointX, y = d3_geom_pointY;
if (arguments.length) return hull(vertices);
function hull(data) {
if (data.length < 3) return [];
var fx = d3_functor(x), fy = d3_functor(y), i, n = data.length, points = [], flippedPoints = [];
for (i = 0; i < n; i++) {
points.push([ +fx.call(this, data[i], i), +fy.call(this, data[i], i), i ]);
}
points.sort(d3_geom_hullOrder);
for (i = 0; i < n; i++) flippedPoints.push([ points[i][0], -points[i][1] ]);
var upper = d3_geom_hullUpper(points), lower = d3_geom_hullUpper(flippedPoints);
var skipLeft = lower[0] === upper[0], skipRight = lower[lower.length - 1] === upper[upper.length - 1], polygon = [];
for (i = upper.length - 1; i >= 0; --i) polygon.push(data[points[upper[i]][2]]);
for (i = +skipLeft; i < lower.length - skipRight; ++i) polygon.push(data[points[lower[i]][2]]);
return polygon;
}
hull.x = function(_) {
return arguments.length ? (x = _, hull) : x;
};
hull.y = function(_) {
return arguments.length ? (y = _, hull) : y;
};
return hull;
};
function d3_geom_hullUpper(points) {
var n = points.length, hull = [ 0, 1 ], hs = 2;
for (var i = 2; i < n; i++) {
while (hs > 1 && d3_cross2d(points[hull[hs - 2]], points[hull[hs - 1]], points[i]) <= 0) --hs;
hull[hs++] = i;
}
return hull.slice(0, hs);
}
function d3_geom_hullOrder(a, b) {
return a[0] - b[0] || a[1] - b[1];
}
d3.geom.polygon = function(coordinates) {
d3_subclass(coordinates, d3_geom_polygonPrototype);
return coordinates;
};
var d3_geom_polygonPrototype = d3.geom.polygon.prototype = [];
d3_geom_polygonPrototype.area = function() {
var i = -1, n = this.length, a, b = this[n - 1], area = 0;
while (++i < n) {
a = b;
b = this[i];
area += a[1] * b[0] - a[0] * b[1];
}
return area * .5;
};
d3_geom_polygonPrototype.centroid = function(k) {
var i = -1, n = this.length, x = 0, y = 0, a, b = this[n - 1], c;
if (!arguments.length) k = -1 / (6 * this.area());
while (++i < n) {
a = b;
b = this[i];
c = a[0] * b[1] - b[0] * a[1];
x += (a[0] + b[0]) * c;
y += (a[1] + b[1]) * c;
}
return [ x * k, y * k ];
};
d3_geom_polygonPrototype.clip = function(subject) {
var input, closed = d3_geom_polygonClosed(subject), i = -1, n = this.length - d3_geom_polygonClosed(this), j, m, a = this[n - 1], b, c, d;
while (++i < n) {
input = subject.slice();
subject.length = 0;
b = this[i];
c = input[(m = input.length - closed) - 1];
j = -1;
while (++j < m) {
d = input[j];
if (d3_geom_polygonInside(d, a, b)) {
if (!d3_geom_polygonInside(c, a, b)) {
subject.push(d3_geom_polygonIntersect(c, d, a, b));
}
subject.push(d);
} else if (d3_geom_polygonInside(c, a, b)) {
subject.push(d3_geom_polygonIntersect(c, d, a, b));
}
c = d;
}
if (closed) subject.push(subject[0]);
a = b;
}
return subject;
};
function d3_geom_polygonInside(p, a, b) {
return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]);
}
function d3_geom_polygonIntersect(c, d, a, b) {
var x1 = c[0], x3 = a[0], x21 = d[0] - x1, x43 = b[0] - x3, y1 = c[1], y3 = a[1], y21 = d[1] - y1, y43 = b[1] - y3, ua = (x43 * (y1 - y3) - y43 * (x1 - x3)) / (y43 * x21 - x43 * y21);
return [ x1 + ua * x21, y1 + ua * y21 ];
}
function d3_geom_polygonClosed(coordinates) {
var a = coordinates[0], b = coordinates[coordinates.length - 1];
return !(a[0] - b[0] || a[1] - b[1]);
}
var d3_geom_voronoiEdges, d3_geom_voronoiCells, d3_geom_voronoiBeaches, d3_geom_voronoiBeachPool = [], d3_geom_voronoiFirstCircle, d3_geom_voronoiCircles, d3_geom_voronoiCirclePool = [];
function d3_geom_voronoiBeach() {
d3_geom_voronoiRedBlackNode(this);
this.edge = this.site = this.circle = null;
}
function d3_geom_voronoiCreateBeach(site) {
var beach = d3_geom_voronoiBeachPool.pop() || new d3_geom_voronoiBeach();
beach.site = site;
return beach;
}
function d3_geom_voronoiDetachBeach(beach) {
d3_geom_voronoiDetachCircle(beach);
d3_geom_voronoiBeaches.remove(beach);
d3_geom_voronoiBeachPool.push(beach);
d3_geom_voronoiRedBlackNode(beach);
}
function d3_geom_voronoiRemoveBeach(beach) {
var circle = beach.circle, x = circle.x, y = circle.cy, vertex = {
x: x,
y: y
}, previous = beach.P, next = beach.N, disappearing = [ beach ];
d3_geom_voronoiDetachBeach(beach);
var lArc = previous;
while (lArc.circle && abs(x - lArc.circle.x) < ε && abs(y - lArc.circle.cy) < ε) {
previous = lArc.P;
disappearing.unshift(lArc);
d3_geom_voronoiDetachBeach(lArc);
lArc = previous;
}
disappearing.unshift(lArc);
d3_geom_voronoiDetachCircle(lArc);
var rArc = next;
while (rArc.circle && abs(x - rArc.circle.x) < ε && abs(y - rArc.circle.cy) < ε) {
next = rArc.N;
disappearing.push(rArc);
d3_geom_voronoiDetachBeach(rArc);
rArc = next;
}
disappearing.push(rArc);
d3_geom_voronoiDetachCircle(rArc);
var nArcs = disappearing.length, iArc;
for (iArc = 1; iArc < nArcs; ++iArc) {
rArc = disappearing[iArc];
lArc = disappearing[iArc - 1];
d3_geom_voronoiSetEdgeEnd(rArc.edge, lArc.site, rArc.site, vertex);
}
lArc = disappearing[0];
rArc = disappearing[nArcs - 1];
rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, rArc.site, null, vertex);
d3_geom_voronoiAttachCircle(lArc);
d3_geom_voronoiAttachCircle(rArc);
}
function d3_geom_voronoiAddBeach(site) {
var x = site.x, directrix = site.y, lArc, rArc, dxl, dxr, node = d3_geom_voronoiBeaches._;
while (node) {
dxl = d3_geom_voronoiLeftBreakPoint(node, directrix) - x;
if (dxl > ε) node = node.L; else {
dxr = x - d3_geom_voronoiRightBreakPoint(node, directrix);
if (dxr > ε) {
if (!node.R) {
lArc = node;
break;
}
node = node.R;
} else {
if (dxl > -ε) {
lArc = node.P;
rArc = node;
} else if (dxr > -ε) {
lArc = node;
rArc = node.N;
} else {
lArc = rArc = node;
}
break;
}
}
}
var newArc = d3_geom_voronoiCreateBeach(site);
d3_geom_voronoiBeaches.insert(lArc, newArc);
if (!lArc && !rArc) return;
if (lArc === rArc) {
d3_geom_voronoiDetachCircle(lArc);
rArc = d3_geom_voronoiCreateBeach(lArc.site);
d3_geom_voronoiBeaches.insert(newArc, rArc);
newArc.edge = rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
d3_geom_voronoiAttachCircle(lArc);
d3_geom_voronoiAttachCircle(rArc);
return;
}
if (!rArc) {
newArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
return;
}
d3_geom_voronoiDetachCircle(lArc);
d3_geom_voronoiDetachCircle(rArc);
var lSite = lArc.site, ax = lSite.x, ay = lSite.y, bx = site.x - ax, by = site.y - ay, rSite = rArc.site, cx = rSite.x - ax, cy = rSite.y - ay, d = 2 * (bx * cy - by * cx), hb = bx * bx + by * by, hc = cx * cx + cy * cy, vertex = {
x: (cy * hb - by * hc) / d + ax,
y: (bx * hc - cx * hb) / d + ay
};
d3_geom_voronoiSetEdgeEnd(rArc.edge, lSite, rSite, vertex);
newArc.edge = d3_geom_voronoiCreateEdge(lSite, site, null, vertex);
rArc.edge = d3_geom_voronoiCreateEdge(site, rSite, null, vertex);
d3_geom_voronoiAttachCircle(lArc);
d3_geom_voronoiAttachCircle(rArc);
}
function d3_geom_voronoiLeftBreakPoint(arc, directrix) {
var site = arc.site, rfocx = site.x, rfocy = site.y, pby2 = rfocy - directrix;
if (!pby2) return rfocx;
var lArc = arc.P;
if (!lArc) return -Infinity;
site = lArc.site;
var lfocx = site.x, lfocy = site.y, plby2 = lfocy - directrix;
if (!plby2) return lfocx;
var hl = lfocx - rfocx, aby2 = 1 / pby2 - 1 / plby2, b = hl / plby2;
if (aby2) return (-b + Math.sqrt(b * b - 2 * aby2 * (hl * hl / (-2 * plby2) - lfocy + plby2 / 2 + rfocy - pby2 / 2))) / aby2 + rfocx;
return (rfocx + lfocx) / 2;
}
function d3_geom_voronoiRightBreakPoint(arc, directrix) {
var rArc = arc.N;
if (rArc) return d3_geom_voronoiLeftBreakPoint(rArc, directrix);
var site = arc.site;
return site.y === directrix ? site.x : Infinity;
}
function d3_geom_voronoiCell(site) {
this.site = site;
this.edges = [];
}
d3_geom_voronoiCell.prototype.prepare = function() {
var halfEdges = this.edges, iHalfEdge = halfEdges.length, edge;
while (iHalfEdge--) {
edge = halfEdges[iHalfEdge].edge;
if (!edge.b || !edge.a) halfEdges.splice(iHalfEdge, 1);
}
halfEdges.sort(d3_geom_voronoiHalfEdgeOrder);
return halfEdges.length;
};
function d3_geom_voronoiCloseCells(extent) {
var x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], x2, y2, x3, y3, cells = d3_geom_voronoiCells, iCell = cells.length, cell, iHalfEdge, halfEdges, nHalfEdges, start, end;
while (iCell--) {
cell = cells[iCell];
if (!cell || !cell.prepare()) continue;
halfEdges = cell.edges;
nHalfEdges = halfEdges.length;
iHalfEdge = 0;
while (iHalfEdge < nHalfEdges) {
end = halfEdges[iHalfEdge].end(), x3 = end.x, y3 = end.y;
start = halfEdges[++iHalfEdge % nHalfEdges].start(), x2 = start.x, y2 = start.y;
if (abs(x3 - x2) > ε || abs(y3 - y2) > ε) {
halfEdges.splice(iHalfEdge, 0, new d3_geom_voronoiHalfEdge(d3_geom_voronoiCreateBorderEdge(cell.site, end, abs(x3 - x0) < ε && y1 - y3 > ε ? {
x: x0,
y: abs(x2 - x0) < ε ? y2 : y1
} : abs(y3 - y1) < ε && x1 - x3 > ε ? {
x: abs(y2 - y1) < ε ? x2 : x1,
y: y1
} : abs(x3 - x1) < ε && y3 - y0 > ε ? {
x: x1,
y: abs(x2 - x1) < ε ? y2 : y0
} : abs(y3 - y0) < ε && x3 - x0 > ε ? {
x: abs(y2 - y0) < ε ? x2 : x0,
y: y0
} : null), cell.site, null));
++nHalfEdges;
}
}
}
}
function d3_geom_voronoiHalfEdgeOrder(a, b) {
return b.angle - a.angle;
}
function d3_geom_voronoiCircle() {
d3_geom_voronoiRedBlackNode(this);
this.x = this.y = this.arc = this.site = this.cy = null;
}
function d3_geom_voronoiAttachCircle(arc) {
var lArc = arc.P, rArc = arc.N;
if (!lArc || !rArc) return;
var lSite = lArc.site, cSite = arc.site, rSite = rArc.site;
if (lSite === rSite) return;
var bx = cSite.x, by = cSite.y, ax = lSite.x - bx, ay = lSite.y - by, cx = rSite.x - bx, cy = rSite.y - by;
var d = 2 * (ax * cy - ay * cx);
if (d >= -ε2) return;
var ha = ax * ax + ay * ay, hc = cx * cx + cy * cy, x = (cy * ha - ay * hc) / d, y = (ax * hc - cx * ha) / d, cy = y + by;
var circle = d3_geom_voronoiCirclePool.pop() || new d3_geom_voronoiCircle();
circle.arc = arc;
circle.site = cSite;
circle.x = x + bx;
circle.y = cy + Math.sqrt(x * x + y * y);
circle.cy = cy;
arc.circle = circle;
var before = null, node = d3_geom_voronoiCircles._;
while (node) {
if (circle.y < node.y || circle.y === node.y && circle.x <= node.x) {
if (node.L) node = node.L; else {
before = node.P;
break;
}
} else {
if (node.R) node = node.R; else {
before = node;
break;
}
}
}
d3_geom_voronoiCircles.insert(before, circle);
if (!before) d3_geom_voronoiFirstCircle = circle;
}
function d3_geom_voronoiDetachCircle(arc) {
var circle = arc.circle;
if (circle) {
if (!circle.P) d3_geom_voronoiFirstCircle = circle.N;
d3_geom_voronoiCircles.remove(circle);
d3_geom_voronoiCirclePool.push(circle);
d3_geom_voronoiRedBlackNode(circle);
arc.circle = null;
}
}
function d3_geom_voronoiClipEdges(extent) {
var edges = d3_geom_voronoiEdges, clip = d3_geom_clipLine(extent[0][0], extent[0][1], extent[1][0], extent[1][1]), i = edges.length, e;
while (i--) {
e = edges[i];
if (!d3_geom_voronoiConnectEdge(e, extent) || !clip(e) || abs(e.a.x - e.b.x) < ε && abs(e.a.y - e.b.y) < ε) {
e.a = e.b = null;
edges.splice(i, 1);
}
}
}
function d3_geom_voronoiConnectEdge(edge, extent) {
var vb = edge.b;
if (vb) return true;
var va = edge.a, x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], lSite = edge.l, rSite = edge.r, lx = lSite.x, ly = lSite.y, rx = rSite.x, ry = rSite.y, fx = (lx + rx) / 2, fy = (ly + ry) / 2, fm, fb;
if (ry === ly) {
if (fx < x0 || fx >= x1) return;
if (lx > rx) {
if (!va) va = {
x: fx,
y: y0
}; else if (va.y >= y1) return;
vb = {
x: fx,
y: y1
};
} else {
if (!va) va = {
x: fx,
y: y1
}; else if (va.y < y0) return;
vb = {
x: fx,
y: y0
};
}
} else {
fm = (lx - rx) / (ry - ly);
fb = fy - fm * fx;
if (fm < -1 || fm > 1) {
if (lx > rx) {
if (!va) va = {
x: (y0 - fb) / fm,
y: y0
}; else if (va.y >= y1) return;
vb = {
x: (y1 - fb) / fm,
y: y1
};
} else {
if (!va) va = {
x: (y1 - fb) / fm,
y: y1
}; else if (va.y < y0) return;
vb = {
x: (y0 - fb) / fm,
y: y0
};
}
} else {
if (ly < ry) {
if (!va) va = {
x: x0,
y: fm * x0 + fb
}; else if (va.x >= x1) return;
vb = {
x: x1,
y: fm * x1 + fb
};
} else {
if (!va) va = {
x: x1,
y: fm * x1 + fb
}; else if (va.x < x0) return;
vb = {
x: x0,
y: fm * x0 + fb
};
}
}
}
edge.a = va;
edge.b = vb;
return true;
}
function d3_geom_voronoiEdge(lSite, rSite) {
this.l = lSite;
this.r = rSite;
this.a = this.b = null;
}
function d3_geom_voronoiCreateEdge(lSite, rSite, va, vb) {
var edge = new d3_geom_voronoiEdge(lSite, rSite);
d3_geom_voronoiEdges.push(edge);
if (va) d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, va);
if (vb) d3_geom_voronoiSetEdgeEnd(edge, rSite, lSite, vb);
d3_geom_voronoiCells[lSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, lSite, rSite));
d3_geom_voronoiCells[rSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, rSite, lSite));
return edge;
}
function d3_geom_voronoiCreateBorderEdge(lSite, va, vb) {
var edge = new d3_geom_voronoiEdge(lSite, null);
edge.a = va;
edge.b = vb;
d3_geom_voronoiEdges.push(edge);
return edge;
}
function d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, vertex) {
if (!edge.a && !edge.b) {
edge.a = vertex;
edge.l = lSite;
edge.r = rSite;
} else if (edge.l === rSite) {
edge.b = vertex;
} else {
edge.a = vertex;
}
}
function d3_geom_voronoiHalfEdge(edge, lSite, rSite) {
var va = edge.a, vb = edge.b;
this.edge = edge;
this.site = lSite;
this.angle = rSite ? Math.atan2(rSite.y - lSite.y, rSite.x - lSite.x) : edge.l === lSite ? Math.atan2(vb.x - va.x, va.y - vb.y) : Math.atan2(va.x - vb.x, vb.y - va.y);
}
d3_geom_voronoiHalfEdge.prototype = {
start: function() {
return this.edge.l === this.site ? this.edge.a : this.edge.b;
},
end: function() {
return this.edge.l === this.site ? this.edge.b : this.edge.a;
}
};
function d3_geom_voronoiRedBlackTree() {
this._ = null;
}
function d3_geom_voronoiRedBlackNode(node) {
node.U = node.C = node.L = node.R = node.P = node.N = null;
}
d3_geom_voronoiRedBlackTree.prototype = {
insert: function(after, node) {
var parent, grandpa, uncle;
if (after) {
node.P = after;
node.N = after.N;
if (after.N) after.N.P = node;
after.N = node;
if (after.R) {
after = after.R;
while (after.L) after = after.L;
after.L = node;
} else {
after.R = node;
}
parent = after;
} else if (this._) {
after = d3_geom_voronoiRedBlackFirst(this._);
node.P = null;
node.N = after;
after.P = after.L = node;
parent = after;
} else {
node.P = node.N = null;
this._ = node;
parent = null;
}
node.L = node.R = null;
node.U = parent;
node.C = true;
after = node;
while (parent && parent.C) {
grandpa = parent.U;
if (parent === grandpa.L) {
uncle = grandpa.R;
if (uncle && uncle.C) {
parent.C = uncle.C = false;
grandpa.C = true;
after = grandpa;
} else {
if (after === parent.R) {
d3_geom_voronoiRedBlackRotateLeft(this, parent);
after = parent;
parent = after.U;
}
parent.C = false;
grandpa.C = true;
d3_geom_voronoiRedBlackRotateRight(this, grandpa);
}
} else {
uncle = grandpa.L;
if (uncle && uncle.C) {
parent.C = uncle.C = false;
grandpa.C = true;
after = grandpa;
} else {
if (after === parent.L) {
d3_geom_voronoiRedBlackRotateRight(this, parent);
after = parent;
parent = after.U;
}
parent.C = false;
grandpa.C = true;
d3_geom_voronoiRedBlackRotateLeft(this, grandpa);
}
}
parent = after.U;
}
this._.C = false;
},
remove: function(node) {
if (node.N) node.N.P = node.P;
if (node.P) node.P.N = node.N;
node.N = node.P = null;
var parent = node.U, sibling, left = node.L, right = node.R, next, red;
if (!left) next = right; else if (!right) next = left; else next = d3_geom_voronoiRedBlackFirst(right);
if (parent) {
if (parent.L === node) parent.L = next; else parent.R = next;
} else {
this._ = next;
}
if (left && right) {
red = next.C;
next.C = node.C;
next.L = left;
left.U = next;
if (next !== right) {
parent = next.U;
next.U = node.U;
node = next.R;
parent.L = node;
next.R = right;
right.U = next;
} else {
next.U = parent;
parent = next;
node = next.R;
}
} else {
red = node.C;
node = next;
}
if (node) node.U = parent;
if (red) return;
if (node && node.C) {
node.C = false;
return;
}
do {
if (node === this._) break;
if (node === parent.L) {
sibling = parent.R;
if (sibling.C) {
sibling.C = false;
parent.C = true;
d3_geom_voronoiRedBlackRotateLeft(this, parent);
sibling = parent.R;
}
if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
if (!sibling.R || !sibling.R.C) {
sibling.L.C = false;
sibling.C = true;
d3_geom_voronoiRedBlackRotateRight(this, sibling);
sibling = parent.R;
}
sibling.C = parent.C;
parent.C = sibling.R.C = false;
d3_geom_voronoiRedBlackRotateLeft(this, parent);
node = this._;
break;
}
} else {
sibling = parent.L;
if (sibling.C) {
sibling.C = false;
parent.C = true;
d3_geom_voronoiRedBlackRotateRight(this, parent);
sibling = parent.L;
}
if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
if (!sibling.L || !sibling.L.C) {
sibling.R.C = false;
sibling.C = true;
d3_geom_voronoiRedBlackRotateLeft(this, sibling);
sibling = parent.L;
}
sibling.C = parent.C;
parent.C = sibling.L.C = false;
d3_geom_voronoiRedBlackRotateRight(this, parent);
node = this._;
break;
}
}
sibling.C = true;
node = parent;
parent = parent.U;
} while (!node.C);
if (node) node.C = false;
}
};
function d3_geom_voronoiRedBlackRotateLeft(tree, node) {
var p = node, q = node.R, parent = p.U;
if (parent) {
if (parent.L === p) parent.L = q; else parent.R = q;
} else {
tree._ = q;
}
q.U = parent;
p.U = q;
p.R = q.L;
if (p.R) p.R.U = p;
q.L = p;
}
function d3_geom_voronoiRedBlackRotateRight(tree, node) {
var p = node, q = node.L, parent = p.U;
if (parent) {
if (parent.L === p) parent.L = q; else parent.R = q;
} else {
tree._ = q;
}
q.U = parent;
p.U = q;
p.L = q.R;
if (p.L) p.L.U = p;
q.R = p;
}
function d3_geom_voronoiRedBlackFirst(node) {
while (node.L) node = node.L;
return node;
}
function d3_geom_voronoi(sites, bbox) {
var site = sites.sort(d3_geom_voronoiVertexOrder).pop(), x0, y0, circle;
d3_geom_voronoiEdges = [];
d3_geom_voronoiCells = new Array(sites.length);
d3_geom_voronoiBeaches = new d3_geom_voronoiRedBlackTree();
d3_geom_voronoiCircles = new d3_geom_voronoiRedBlackTree();
while (true) {
circle = d3_geom_voronoiFirstCircle;
if (site && (!circle || site.y < circle.y || site.y === circle.y && site.x < circle.x)) {
if (site.x !== x0 || site.y !== y0) {
d3_geom_voronoiCells[site.i] = new d3_geom_voronoiCell(site);
d3_geom_voronoiAddBeach(site);
x0 = site.x, y0 = site.y;
}
site = sites.pop();
} else if (circle) {
d3_geom_voronoiRemoveBeach(circle.arc);
} else {
break;
}
}
if (bbox) d3_geom_voronoiClipEdges(bbox), d3_geom_voronoiCloseCells(bbox);
var diagram = {
cells: d3_geom_voronoiCells,
edges: d3_geom_voronoiEdges
};
d3_geom_voronoiBeaches = d3_geom_voronoiCircles = d3_geom_voronoiEdges = d3_geom_voronoiCells = null;
return diagram;
}
function d3_geom_voronoiVertexOrder(a, b) {
return b.y - a.y || b.x - a.x;
}
d3.geom.voronoi = function(points) {
var x = d3_geom_pointX, y = d3_geom_pointY, fx = x, fy = y, clipExtent = d3_geom_voronoiClipExtent;
if (points) return voronoi(points);
function voronoi(data) {
var polygons = new Array(data.length), x0 = clipExtent[0][0], y0 = clipExtent[0][1], x1 = clipExtent[1][0], y1 = clipExtent[1][1];
d3_geom_voronoi(sites(data), clipExtent).cells.forEach(function(cell, i) {
var edges = cell.edges, site = cell.site, polygon = polygons[i] = edges.length ? edges.map(function(e) {
var s = e.start();
return [ s.x, s.y ];
}) : site.x >= x0 && site.x <= x1 && site.y >= y0 && site.y <= y1 ? [ [ x0, y1 ], [ x1, y1 ], [ x1, y0 ], [ x0, y0 ] ] : [];
polygon.point = data[i];
});
return polygons;
}
function sites(data) {
return data.map(function(d, i) {
return {
x: Math.round(fx(d, i) / ε) * ε,
y: Math.round(fy(d, i) / ε) * ε,
i: i
};
});
}
voronoi.links = function(data) {
return d3_geom_voronoi(sites(data)).edges.filter(function(edge) {
return edge.l && edge.r;
}).map(function(edge) {
return {
source: data[edge.l.i],
target: data[edge.r.i]
};
});
};
voronoi.triangles = function(data) {
var triangles = [];
d3_geom_voronoi(sites(data)).cells.forEach(function(cell, i) {
var site = cell.site, edges = cell.edges.sort(d3_geom_voronoiHalfEdgeOrder), j = -1, m = edges.length, e0, s0, e1 = edges[m - 1].edge, s1 = e1.l === site ? e1.r : e1.l;
while (++j < m) {
e0 = e1;
s0 = s1;
e1 = edges[j].edge;
s1 = e1.l === site ? e1.r : e1.l;
if (i < s0.i && i < s1.i && d3_geom_voronoiTriangleArea(site, s0, s1) < 0) {
triangles.push([ data[i], data[s0.i], data[s1.i] ]);
}
}
});
return triangles;
};
voronoi.x = function(_) {
return arguments.length ? (fx = d3_functor(x = _), voronoi) : x;
};
voronoi.y = function(_) {
return arguments.length ? (fy = d3_functor(y = _), voronoi) : y;
};
voronoi.clipExtent = function(_) {
if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent;
clipExtent = _ == null ? d3_geom_voronoiClipExtent : _;
return voronoi;
};
voronoi.size = function(_) {
if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent && clipExtent[1];
return voronoi.clipExtent(_ && [ [ 0, 0 ], _ ]);
};
return voronoi;
};
var d3_geom_voronoiClipExtent = [ [ -1e6, -1e6 ], [ 1e6, 1e6 ] ];
function d3_geom_voronoiTriangleArea(a, b, c) {
return (a.x - c.x) * (b.y - a.y) - (a.x - b.x) * (c.y - a.y);
}
d3.geom.delaunay = function(vertices) {
return d3.geom.voronoi().triangles(vertices);
};
d3.geom.quadtree = function(points, x1, y1, x2, y2) {
var x = d3_geom_pointX, y = d3_geom_pointY, compat;
if (compat = arguments.length) {
x = d3_geom_quadtreeCompatX;
y = d3_geom_quadtreeCompatY;
if (compat === 3) {
y2 = y1;
x2 = x1;
y1 = x1 = 0;
}
return quadtree(points);
}
function quadtree(data) {
var d, fx = d3_functor(x), fy = d3_functor(y), xs, ys, i, n, x1_, y1_, x2_, y2_;
if (x1 != null) {
x1_ = x1, y1_ = y1, x2_ = x2, y2_ = y2;
} else {
x2_ = y2_ = -(x1_ = y1_ = Infinity);
xs = [], ys = [];
n = data.length;
if (compat) for (i = 0; i < n; ++i) {
d = data[i];
if (d.x < x1_) x1_ = d.x;
if (d.y < y1_) y1_ = d.y;
if (d.x > x2_) x2_ = d.x;
if (d.y > y2_) y2_ = d.y;
xs.push(d.x);
ys.push(d.y);
} else for (i = 0; i < n; ++i) {
var x_ = +fx(d = data[i], i), y_ = +fy(d, i);
if (x_ < x1_) x1_ = x_;
if (y_ < y1_) y1_ = y_;
if (x_ > x2_) x2_ = x_;
if (y_ > y2_) y2_ = y_;
xs.push(x_);
ys.push(y_);
}
}
var dx = x2_ - x1_, dy = y2_ - y1_;
if (dx > dy) y2_ = y1_ + dx; else x2_ = x1_ + dy;
function insert(n, d, x, y, x1, y1, x2, y2) {
if (isNaN(x) || isNaN(y)) return;
if (n.leaf) {
var nx = n.x, ny = n.y;
if (nx != null) {
if (abs(nx - x) + abs(ny - y) < .01) {
insertChild(n, d, x, y, x1, y1, x2, y2);
} else {
var nPoint = n.point;
n.x = n.y = n.point = null;
insertChild(n, nPoint, nx, ny, x1, y1, x2, y2);
insertChild(n, d, x, y, x1, y1, x2, y2);
}
} else {
n.x = x, n.y = y, n.point = d;
}
} else {
insertChild(n, d, x, y, x1, y1, x2, y2);
}
}
function insertChild(n, d, x, y, x1, y1, x2, y2) {
var xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym, i = below << 1 | right;
n.leaf = false;
n = n.nodes[i] || (n.nodes[i] = d3_geom_quadtreeNode());
if (right) x1 = xm; else x2 = xm;
if (below) y1 = ym; else y2 = ym;
insert(n, d, x, y, x1, y1, x2, y2);
}
var root = d3_geom_quadtreeNode();
root.add = function(d) {
insert(root, d, +fx(d, ++i), +fy(d, i), x1_, y1_, x2_, y2_);
};
root.visit = function(f) {
d3_geom_quadtreeVisit(f, root, x1_, y1_, x2_, y2_);
};
root.find = function(point) {
return d3_geom_quadtreeFind(root, point[0], point[1], x1_, y1_, x2_, y2_);
};
i = -1;
if (x1 == null) {
while (++i < n) {
insert(root, data[i], xs[i], ys[i], x1_, y1_, x2_, y2_);
}
--i;
} else data.forEach(root.add);
xs = ys = data = d = null;
return root;
}
quadtree.x = function(_) {
return arguments.length ? (x = _, quadtree) : x;
};
quadtree.y = function(_) {
return arguments.length ? (y = _, quadtree) : y;
};
quadtree.extent = function(_) {
if (!arguments.length) return x1 == null ? null : [ [ x1, y1 ], [ x2, y2 ] ];
if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = +_[0][0], y1 = +_[0][1], x2 = +_[1][0],
y2 = +_[1][1];
return quadtree;
};
quadtree.size = function(_) {
if (!arguments.length) return x1 == null ? null : [ x2 - x1, y2 - y1 ];
if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = y1 = 0, x2 = +_[0], y2 = +_[1];
return quadtree;
};
return quadtree;
};
function d3_geom_quadtreeCompatX(d) {
return d.x;
}
function d3_geom_quadtreeCompatY(d) {
return d.y;
}
function d3_geom_quadtreeNode() {
return {
leaf: true,
nodes: [],
point: null,
x: null,
y: null
};
}
function d3_geom_quadtreeVisit(f, node, x1, y1, x2, y2) {
if (!f(node, x1, y1, x2, y2)) {
var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, children = node.nodes;
if (children[0]) d3_geom_quadtreeVisit(f, children[0], x1, y1, sx, sy);
if (children[1]) d3_geom_quadtreeVisit(f, children[1], sx, y1, x2, sy);
if (children[2]) d3_geom_quadtreeVisit(f, children[2], x1, sy, sx, y2);
if (children[3]) d3_geom_quadtreeVisit(f, children[3], sx, sy, x2, y2);
}
}
function d3_geom_quadtreeFind(root, x, y, x0, y0, x3, y3) {
var minDistance2 = Infinity, closestPoint;
(function find(node, x1, y1, x2, y2) {
if (x1 > x3 || y1 > y3 || x2 < x0 || y2 < y0) return;
if (point = node.point) {
var point, dx = x - node.x, dy = y - node.y, distance2 = dx * dx + dy * dy;
if (distance2 < minDistance2) {
var distance = Math.sqrt(minDistance2 = distance2);
x0 = x - distance, y0 = y - distance;
x3 = x + distance, y3 = y + distance;
closestPoint = point;
}
}
var children = node.nodes, xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym;
for (var i = below << 1 | right, j = i + 4; i < j; ++i) {
if (node = children[i & 3]) switch (i & 3) {
case 0:
find(node, x1, y1, xm, ym);
break;
case 1:
find(node, xm, y1, x2, ym);
break;
case 2:
find(node, x1, ym, xm, y2);
break;
case 3:
find(node, xm, ym, x2, y2);
break;
}
}
})(root, x0, y0, x3, y3);
return closestPoint;
}
d3.interpolateRgb = d3_interpolateRgb;
function d3_interpolateRgb(a, b) {
a = d3.rgb(a);
b = d3.rgb(b);
var ar = a.r, ag = a.g, ab = a.b, br = b.r - ar, bg = b.g - ag, bb = b.b - ab;
return function(t) {
return "#" + d3_rgb_hex(Math.round(ar + br * t)) + d3_rgb_hex(Math.round(ag + bg * t)) + d3_rgb_hex(Math.round(ab + bb * t));
};
}
d3.interpolateObject = d3_interpolateObject;
function d3_interpolateObject(a, b) {
var i = {}, c = {}, k;
for (k in a) {
if (k in b) {
i[k] = d3_interpolate(a[k], b[k]);
} else {
c[k] = a[k];
}
}
for (k in b) {
if (!(k in a)) {
c[k] = b[k];
}
}
return function(t) {
for (k in i) c[k] = i[k](t);
return c;
};
}
d3.interpolateNumber = d3_interpolateNumber;
function d3_interpolateNumber(a, b) {
a = +a, b = +b;
return function(t) {
return a * (1 - t) + b * t;
};
}
d3.interpolateString = d3_interpolateString;
function d3_interpolateString(a, b) {
var bi = d3_interpolate_numberA.lastIndex = d3_interpolate_numberB.lastIndex = 0, am, bm, bs, i = -1, s = [], q = [];
a = a + "", b = b + "";
while ((am = d3_interpolate_numberA.exec(a)) && (bm = d3_interpolate_numberB.exec(b))) {
if ((bs = bm.index) > bi) {
bs = b.slice(bi, bs);
if (s[i]) s[i] += bs; else s[++i] = bs;
}
if ((am = am[0]) === (bm = bm[0])) {
if (s[i]) s[i] += bm; else s[++i] = bm;
} else {
s[++i] = null;
q.push({
i: i,
x: d3_interpolateNumber(am, bm)
});
}
bi = d3_interpolate_numberB.lastIndex;
}
if (bi < b.length) {
bs = b.slice(bi);
if (s[i]) s[i] += bs; else s[++i] = bs;
}
return s.length < 2 ? q[0] ? (b = q[0].x, function(t) {
return b(t) + "";
}) : function() {
return b;
} : (b = q.length, function(t) {
for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);
return s.join("");
});
}
var d3_interpolate_numberA = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g, d3_interpolate_numberB = new RegExp(d3_interpolate_numberA.source, "g");
d3.interpolate = d3_interpolate;
function d3_interpolate(a, b) {
var i = d3.interpolators.length, f;
while (--i >= 0 && !(f = d3.interpolators[i](a, b))) ;
return f;
}
d3.interpolators = [ function(a, b) {
var t = typeof b;
return (t === "string" ? d3_rgb_names.has(b.toLowerCase()) || /^(#|rgb\(|hsl\()/i.test(b) ? d3_interpolateRgb : d3_interpolateString : b instanceof d3_color ? d3_interpolateRgb : Array.isArray(b) ? d3_interpolateArray : t === "object" && isNaN(b) ? d3_interpolateObject : d3_interpolateNumber)(a, b);
} ];
d3.interpolateArray = d3_interpolateArray;
function d3_interpolateArray(a, b) {
var x = [], c = [], na = a.length, nb = b.length, n0 = Math.min(a.length, b.length), i;
for (i = 0; i < n0; ++i) x.push(d3_interpolate(a[i], b[i]));
for (;i < na; ++i) c[i] = a[i];
for (;i < nb; ++i) c[i] = b[i];
return function(t) {
for (i = 0; i < n0; ++i) c[i] = x[i](t);
return c;
};
}
var d3_ease_default = function() {
return d3_identity;
};
var d3_ease = d3.map({
linear: d3_ease_default,
poly: d3_ease_poly,
quad: function() {
return d3_ease_quad;
},
cubic: function() {
return d3_ease_cubic;
},
sin: function() {
return d3_ease_sin;
},
exp: function() {
return d3_ease_exp;
},
circle: function() {
return d3_ease_circle;
},
elastic: d3_ease_elastic,
back: d3_ease_back,
bounce: function() {
return d3_ease_bounce;
}
});
var d3_ease_mode = d3.map({
"in": d3_identity,
out: d3_ease_reverse,
"in-out": d3_ease_reflect,
"out-in": function(f) {
return d3_ease_reflect(d3_ease_reverse(f));
}
});
d3.ease = function(name) {
var i = name.indexOf("-"), t = i >= 0 ? name.slice(0, i) : name, m = i >= 0 ? name.slice(i + 1) : "in";
t = d3_ease.get(t) || d3_ease_default;
m = d3_ease_mode.get(m) || d3_identity;
return d3_ease_clamp(m(t.apply(null, d3_arraySlice.call(arguments, 1))));
};
function d3_ease_clamp(f) {
return function(t) {
return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
};
}
function d3_ease_reverse(f) {
return function(t) {
return 1 - f(1 - t);
};
}
function d3_ease_reflect(f) {
return function(t) {
return .5 * (t < .5 ? f(2 * t) : 2 - f(2 - 2 * t));
};
}
function d3_ease_quad(t) {
return t * t;
}
function d3_ease_cubic(t) {
return t * t * t;
}
function d3_ease_cubicInOut(t) {
if (t <= 0) return 0;
if (t >= 1) return 1;
var t2 = t * t, t3 = t2 * t;
return 4 * (t < .5 ? t3 : 3 * (t - t2) + t3 - .75);
}
function d3_ease_poly(e) {
return function(t) {
return Math.pow(t, e);
};
}
function d3_ease_sin(t) {
return 1 - Math.cos(t * halfπ);
}
function d3_ease_exp(t) {
return Math.pow(2, 10 * (t - 1));
}
function d3_ease_circle(t) {
return 1 - Math.sqrt(1 - t * t);
}
function d3_ease_elastic(a, p) {
var s;
if (arguments.length < 2) p = .45;
if (arguments.length) s = p / τ * Math.asin(1 / a); else a = 1, s = p / 4;
return function(t) {
return 1 + a * Math.pow(2, -10 * t) * Math.sin((t - s) * τ / p);
};
}
function d3_ease_back(s) {
if (!s) s = 1.70158;
return function(t) {
return t * t * ((s + 1) * t - s);
};
}
function d3_ease_bounce(t) {
return t < 1 / 2.75 ? 7.5625 * t * t : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75 : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375 : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
}
d3.interpolateHcl = d3_interpolateHcl;
function d3_interpolateHcl(a, b) {
a = d3.hcl(a);
b = d3.hcl(b);
var ah = a.h, ac = a.c, al = a.l, bh = b.h - ah, bc = b.c - ac, bl = b.l - al;
if (isNaN(bc)) bc = 0, ac = isNaN(ac) ? b.c : ac;
if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
return function(t) {
return d3_hcl_lab(ah + bh * t, ac + bc * t, al + bl * t) + "";
};
}
d3.interpolateHsl = d3_interpolateHsl;
function d3_interpolateHsl(a, b) {
a = d3.hsl(a);
b = d3.hsl(b);
var ah = a.h, as = a.s, al = a.l, bh = b.h - ah, bs = b.s - as, bl = b.l - al;
if (isNaN(bs)) bs = 0, as = isNaN(as) ? b.s : as;
if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
return function(t) {
return d3_hsl_rgb(ah + bh * t, as + bs * t, al + bl * t) + "";
};
}
d3.interpolateLab = d3_interpolateLab;
function d3_interpolateLab(a, b) {
a = d3.lab(a);
b = d3.lab(b);
var al = a.l, aa = a.a, ab = a.b, bl = b.l - al, ba = b.a - aa, bb = b.b - ab;
return function(t) {
return d3_lab_rgb(al + bl * t, aa + ba * t, ab + bb * t) + "";
};
}
d3.interpolateRound = d3_interpolateRound;
function d3_interpolateRound(a, b) {
b -= a;
return function(t) {
return Math.round(a + b * t);
};
}
d3.transform = function(string) {
var g = d3_document.createElementNS(d3.ns.prefix.svg, "g");
return (d3.transform = function(string) {
if (string != null) {
g.setAttribute("transform", string);
var t = g.transform.baseVal.consolidate();
}
return new d3_transform(t ? t.matrix : d3_transformIdentity);
})(string);
};
function d3_transform(m) {
var r0 = [ m.a, m.b ], r1 = [ m.c, m.d ], kx = d3_transformNormalize(r0), kz = d3_transformDot(r0, r1), ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
if (r0[0] * r1[1] < r1[0] * r0[1]) {
r0[0] *= -1;
r0[1] *= -1;
kx *= -1;
kz *= -1;
}
this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_degrees;
this.translate = [ m.e, m.f ];
this.scale = [ kx, ky ];
this.skew = ky ? Math.atan2(kz, ky) * d3_degrees : 0;
}
d3_transform.prototype.toString = function() {
return "translate(" + this.translate + ")rotate(" + this.rotate + ")skewX(" + this.skew + ")scale(" + this.scale + ")";
};
function d3_transformDot(a, b) {
return a[0] * b[0] + a[1] * b[1];
}
function d3_transformNormalize(a) {
var k = Math.sqrt(d3_transformDot(a, a));
if (k) {
a[0] /= k;
a[1] /= k;
}
return k;
}
function d3_transformCombine(a, b, k) {
a[0] += k * b[0];
a[1] += k * b[1];
return a;
}
var d3_transformIdentity = {
a: 1,
b: 0,
c: 0,
d: 1,
e: 0,
f: 0
};
d3.interpolateTransform = d3_interpolateTransform;
function d3_interpolateTransformPop(s) {
return s.length ? s.pop() + "," : "";
}
function d3_interpolateTranslate(ta, tb, s, q) {
if (ta[0] !== tb[0] || ta[1] !== tb[1]) {
var i = s.push("translate(", null, ",", null, ")");
q.push({
i: i - 4,
x: d3_interpolateNumber(ta[0], tb[0])
}, {
i: i - 2,
x: d3_interpolateNumber(ta[1], tb[1])
});
} else if (tb[0] || tb[1]) {
s.push("translate(" + tb + ")");
}
}
function d3_interpolateRotate(ra, rb, s, q) {
if (ra !== rb) {
if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360;
q.push({
i: s.push(d3_interpolateTransformPop(s) + "rotate(", null, ")") - 2,
x: d3_interpolateNumber(ra, rb)
});
} else if (rb) {
s.push(d3_interpolateTransformPop(s) + "rotate(" + rb + ")");
}
}
function d3_interpolateSkew(wa, wb, s, q) {
if (wa !== wb) {
q.push({
i: s.push(d3_interpolateTransformPop(s) + "skewX(", null, ")") - 2,
x: d3_interpolateNumber(wa, wb)
});
} else if (wb) {
s.push(d3_interpolateTransformPop(s) + "skewX(" + wb + ")");
}
}
function d3_interpolateScale(ka, kb, s, q) {
if (ka[0] !== kb[0] || ka[1] !== kb[1]) {
var i = s.push(d3_interpolateTransformPop(s) + "scale(", null, ",", null, ")");
q.push({
i: i - 4,
x: d3_interpolateNumber(ka[0], kb[0])
}, {
i: i - 2,
x: d3_interpolateNumber(ka[1], kb[1])
});
} else if (kb[0] !== 1 || kb[1] !== 1) {
s.push(d3_interpolateTransformPop(s) + "scale(" + kb + ")");
}
}
function d3_interpolateTransform(a, b) {
var s = [], q = [];
a = d3.transform(a), b = d3.transform(b);
d3_interpolateTranslate(a.translate, b.translate, s, q);
d3_interpolateRotate(a.rotate, b.rotate, s, q);
d3_interpolateSkew(a.skew, b.skew, s, q);
d3_interpolateScale(a.scale, b.scale, s, q);
a = b = null;
return function(t) {
var i = -1, n = q.length, o;
while (++i < n) s[(o = q[i]).i] = o.x(t);
return s.join("");
};
}
function d3_uninterpolateNumber(a, b) {
b = (b -= a = +a) || 1 / b;
return function(x) {
return (x - a) / b;
};
}
function d3_uninterpolateClamp(a, b) {
b = (b -= a = +a) || 1 / b;
return function(x) {
return Math.max(0, Math.min(1, (x - a) / b));
};
}
d3.layout = {};
d3.layout.bundle = function() {
return function(links) {
var paths = [], i = -1, n = links.length;
while (++i < n) paths.push(d3_layout_bundlePath(links[i]));
return paths;
};
};
function d3_layout_bundlePath(link) {
var start = link.source, end = link.target, lca = d3_layout_bundleLeastCommonAncestor(start, end), points = [ start ];
while (start !== lca) {
start = start.parent;
points.push(start);
}
var k = points.length;
while (end !== lca) {
points.splice(k, 0, end);
end = end.parent;
}
return points;
}
function d3_layout_bundleAncestors(node) {
var ancestors = [], parent = node.parent;
while (parent != null) {
ancestors.push(node);
node = parent;
parent = parent.parent;
}
ancestors.push(node);
return ancestors;
}
function d3_layout_bundleLeastCommonAncestor(a, b) {
if (a === b) return a;
var aNodes = d3_layout_bundleAncestors(a), bNodes = d3_layout_bundleAncestors(b), aNode = aNodes.pop(), bNode = bNodes.pop(), sharedNode = null;
while (aNode === bNode) {
sharedNode = aNode;
aNode = aNodes.pop();
bNode = bNodes.pop();
}
return sharedNode;
}
d3.layout.chord = function() {
var chord = {}, chords, groups, matrix, n, padding = 0, sortGroups, sortSubgroups, sortChords;
function relayout() {
var subgroups = {}, groupSums = [], groupIndex = d3.range(n), subgroupIndex = [], k, x, x0, i, j;
chords = [];
groups = [];
k = 0, i = -1;
while (++i < n) {
x = 0, j = -1;
while (++j < n) {
x += matrix[i][j];
}
groupSums.push(x);
subgroupIndex.push(d3.range(n));
k += x;
}
if (sortGroups) {
groupIndex.sort(function(a, b) {
return sortGroups(groupSums[a], groupSums[b]);
});
}
if (sortSubgroups) {
subgroupIndex.forEach(function(d, i) {
d.sort(function(a, b) {
return sortSubgroups(matrix[i][a], matrix[i][b]);
});
});
}
k = (τ - padding * n) / k;
x = 0, i = -1;
while (++i < n) {
x0 = x, j = -1;
while (++j < n) {
var di = groupIndex[i], dj = subgroupIndex[di][j], v = matrix[di][dj], a0 = x, a1 = x += v * k;
subgroups[di + "-" + dj] = {
index: di,
subindex: dj,
startAngle: a0,
endAngle: a1,
value: v
};
}
groups[di] = {
index: di,
startAngle: x0,
endAngle: x,
value: groupSums[di]
};
x += padding;
}
i = -1;
while (++i < n) {
j = i - 1;
while (++j < n) {
var source = subgroups[i + "-" + j], target = subgroups[j + "-" + i];
if (source.value || target.value) {
chords.push(source.value < target.value ? {
source: target,
target: source
} : {
source: source,
target: target
});
}
}
}
if (sortChords) resort();
}
function resort() {
chords.sort(function(a, b) {
return sortChords((a.source.value + a.target.value) / 2, (b.source.value + b.target.value) / 2);
});
}
chord.matrix = function(x) {
if (!arguments.length) return matrix;
n = (matrix = x) && matrix.length;
chords = groups = null;
return chord;
};
chord.padding = function(x) {
if (!arguments.length) return padding;
padding = x;
chords = groups = null;
return chord;
};
chord.sortGroups = function(x) {
if (!arguments.length) return sortGroups;
sortGroups = x;
chords = groups = null;
return chord;
};
chord.sortSubgroups = function(x) {
if (!arguments.length) return sortSubgroups;
sortSubgroups = x;
chords = null;
return chord;
};
chord.sortChords = function(x) {
if (!arguments.length) return sortChords;
sortChords = x;
if (chords) resort();
return chord;
};
chord.chords = function() {
if (!chords) relayout();
return chords;
};
chord.groups = function() {
if (!groups) relayout();
return groups;
};
return chord;
};
d3.layout.force = function() {
var force = {}, event = d3.dispatch("start", "tick", "end"), timer, size = [ 1, 1 ], drag, alpha, friction = .9, linkDistance = d3_layout_forceLinkDistance, linkStrength = d3_layout_forceLinkStrength, charge = -30, chargeDistance2 = d3_layout_forceChargeDistance2, gravity = .1, theta2 = .64, nodes = [], links = [], distances, strengths, charges;
function repulse(node) {
return function(quad, x1, _, x2) {
if (quad.point !== node) {
var dx = quad.cx - node.x, dy = quad.cy - node.y, dw = x2 - x1, dn = dx * dx + dy * dy;
if (dw * dw / theta2 < dn) {
if (dn < chargeDistance2) {
var k = quad.charge / dn;
node.px -= dx * k;
node.py -= dy * k;
}
return true;
}
if (quad.point && dn && dn < chargeDistance2) {
var k = quad.pointCharge / dn;
node.px -= dx * k;
node.py -= dy * k;
}
}
return !quad.charge;
};
}
force.tick = function() {
if ((alpha *= .99) < .005) {
timer = null;
event.end({
type: "end",
alpha: alpha = 0
});
return true;
}
var n = nodes.length, m = links.length, q, i, o, s, t, l, k, x, y;
for (i = 0; i < m; ++i) {
o = links[i];
s = o.source;
t = o.target;
x = t.x - s.x;
y = t.y - s.y;
if (l = x * x + y * y) {
l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
x *= l;
y *= l;
t.x -= x * (k = s.weight + t.weight ? s.weight / (s.weight + t.weight) : .5);
t.y -= y * k;
s.x += x * (k = 1 - k);
s.y += y * k;
}
}
if (k = alpha * gravity) {
x = size[0] / 2;
y = size[1] / 2;
i = -1;
if (k) while (++i < n) {
o = nodes[i];
o.x += (x - o.x) * k;
o.y += (y - o.y) * k;
}
}
if (charge) {
d3_layout_forceAccumulate(q = d3.geom.quadtree(nodes), alpha, charges);
i = -1;
while (++i < n) {
if (!(o = nodes[i]).fixed) {
q.visit(repulse(o));
}
}
}
i = -1;
while (++i < n) {
o = nodes[i];
if (o.fixed) {
o.x = o.px;
o.y = o.py;
} else {
o.x -= (o.px - (o.px = o.x)) * friction;
o.y -= (o.py - (o.py = o.y)) * friction;
}
}
event.tick({
type: "tick",
alpha: alpha
});
};
force.nodes = function(x) {
if (!arguments.length) return nodes;
nodes = x;
return force;
};
force.links = function(x) {
if (!arguments.length) return links;
links = x;
return force;
};
force.size = function(x) {
if (!arguments.length) return size;
size = x;
return force;
};
force.linkDistance = function(x) {
if (!arguments.length) return linkDistance;
linkDistance = typeof x === "function" ? x : +x;
return force;
};
force.distance = force.linkDistance;
force.linkStrength = function(x) {
if (!arguments.length) return linkStrength;
linkStrength = typeof x === "function" ? x : +x;
return force;
};
force.friction = function(x) {
if (!arguments.length) return friction;
friction = +x;
return force;
};
force.charge = function(x) {
if (!arguments.length) return charge;
charge = typeof x === "function" ? x : +x;
return force;
};
force.chargeDistance = function(x) {
if (!arguments.length) return Math.sqrt(chargeDistance2);
chargeDistance2 = x * x;
return force;
};
force.gravity = function(x) {
if (!arguments.length) return gravity;
gravity = +x;
return force;
};
force.theta = function(x) {
if (!arguments.length) return Math.sqrt(theta2);
theta2 = x * x;
return force;
};
force.alpha = function(x) {
if (!arguments.length) return alpha;
x = +x;
if (alpha) {
if (x > 0) {
alpha = x;
} else {
timer.c = null, timer.t = NaN, timer = null;
event.end({
type: "end",
alpha: alpha = 0
});
}
} else if (x > 0) {
event.start({
type: "start",
alpha: alpha = x
});
timer = d3_timer(force.tick);
}
return force;
};
force.start = function() {
var i, n = nodes.length, m = links.length, w = size[0], h = size[1], neighbors, o;
for (i = 0; i < n; ++i) {
(o = nodes[i]).index = i;
o.weight = 0;
}
for (i = 0; i < m; ++i) {
o = links[i];
if (typeof o.source == "number") o.source = nodes[o.source];
if (typeof o.target == "number") o.target = nodes[o.target];
++o.source.weight;
++o.target.weight;
}
for (i = 0; i < n; ++i) {
o = nodes[i];
if (isNaN(o.x)) o.x = position("x", w);
if (isNaN(o.y)) o.y = position("y", h);
if (isNaN(o.px)) o.px = o.x;
if (isNaN(o.py)) o.py = o.y;
}
distances = [];
if (typeof linkDistance === "function") for (i = 0; i < m; ++i) distances[i] = +linkDistance.call(this, links[i], i); else for (i = 0; i < m; ++i) distances[i] = linkDistance;
strengths = [];
if (typeof linkStrength === "function") for (i = 0; i < m; ++i) strengths[i] = +linkStrength.call(this, links[i], i); else for (i = 0; i < m; ++i) strengths[i] = linkStrength;
charges = [];
if (typeof charge === "function") for (i = 0; i < n; ++i) charges[i] = +charge.call(this, nodes[i], i); else for (i = 0; i < n; ++i) charges[i] = charge;
function position(dimension, size) {
if (!neighbors) {
neighbors = new Array(n);
for (j = 0; j < n; ++j) {
neighbors[j] = [];
}
for (j = 0; j < m; ++j) {
var o = links[j];
neighbors[o.source.index].push(o.target);
neighbors[o.target.index].push(o.source);
}
}
var candidates = neighbors[i], j = -1, l = candidates.length, x;
while (++j < l) if (!isNaN(x = candidates[j][dimension])) return x;
return Math.random() * size;
}
return force.resume();
};
force.resume = function() {
return force.alpha(.1);
};
force.stop = function() {
return force.alpha(0);
};
force.drag = function() {
if (!drag) drag = d3.behavior.drag().origin(d3_identity).on("dragstart.force", d3_layout_forceDragstart).on("drag.force", dragmove).on("dragend.force", d3_layout_forceDragend);
if (!arguments.length) return drag;
this.on("mouseover.force", d3_layout_forceMouseover).on("mouseout.force", d3_layout_forceMouseout).call(drag);
};
function dragmove(d) {
d.px = d3.event.x, d.py = d3.event.y;
force.resume();
}
return d3.rebind(force, event, "on");
};
function d3_layout_forceDragstart(d) {
d.fixed |= 2;
}
function d3_layout_forceDragend(d) {
d.fixed &= ~6;
}
function d3_layout_forceMouseover(d) {
d.fixed |= 4;
d.px = d.x, d.py = d.y;
}
function d3_layout_forceMouseout(d) {
d.fixed &= ~4;
}
function d3_layout_forceAccumulate(quad, alpha, charges) {
var cx = 0, cy = 0;
quad.charge = 0;
if (!quad.leaf) {
var nodes = quad.nodes, n = nodes.length, i = -1, c;
while (++i < n) {
c = nodes[i];
if (c == null) continue;
d3_layout_forceAccumulate(c, alpha, charges);
quad.charge += c.charge;
cx += c.charge * c.cx;
cy += c.charge * c.cy;
}
}
if (quad.point) {
if (!quad.leaf) {
quad.point.x += Math.random() - .5;
quad.point.y += Math.random() - .5;
}
var k = alpha * charges[quad.point.index];
quad.charge += quad.pointCharge = k;
cx += k * quad.point.x;
cy += k * quad.point.y;
}
quad.cx = cx / quad.charge;
quad.cy = cy / quad.charge;
}
var d3_layout_forceLinkDistance = 20, d3_layout_forceLinkStrength = 1, d3_layout_forceChargeDistance2 = Infinity;
d3.layout.hierarchy = function() {
var sort = d3_layout_hierarchySort, children = d3_layout_hierarchyChildren, value = d3_layout_hierarchyValue;
function hierarchy(root) {
var stack = [ root ], nodes = [], node;
root.depth = 0;
while ((node = stack.pop()) != null) {
nodes.push(node);
if ((childs = children.call(hierarchy, node, node.depth)) && (n = childs.length)) {
var n, childs, child;
while (--n >= 0) {
stack.push(child = childs[n]);
child.parent = node;
child.depth = node.depth + 1;
}
if (value) node.value = 0;
node.children = childs;
} else {
if (value) node.value = +value.call(hierarchy, node, node.depth) || 0;
delete node.children;
}
}
d3_layout_hierarchyVisitAfter(root, function(node) {
var childs, parent;
if (sort && (childs = node.children)) childs.sort(sort);
if (value && (parent = node.parent)) parent.value += node.value;
});
return nodes;
}
hierarchy.sort = function(x) {
if (!arguments.length) return sort;
sort = x;
return hierarchy;
};
hierarchy.children = function(x) {
if (!arguments.length) return children;
children = x;
return hierarchy;
};
hierarchy.value = function(x) {
if (!arguments.length) return value;
value = x;
return hierarchy;
};
hierarchy.revalue = function(root) {
if (value) {
d3_layout_hierarchyVisitBefore(root, function(node) {
if (node.children) node.value = 0;
});
d3_layout_hierarchyVisitAfter(root, function(node) {
var parent;
if (!node.children) node.value = +value.call(hierarchy, node, node.depth) || 0;
if (parent = node.parent) parent.value += node.value;
});
}
return root;
};
return hierarchy;
};
function d3_layout_hierarchyRebind(object, hierarchy) {
d3.rebind(object, hierarchy, "sort", "children", "value");
object.nodes = object;
object.links = d3_layout_hierarchyLinks;
return object;
}
function d3_layout_hierarchyVisitBefore(node, callback) {
var nodes = [ node ];
while ((node = nodes.pop()) != null) {
callback(node);
if ((children = node.children) && (n = children.length)) {
var n, children;
while (--n >= 0) nodes.push(children[n]);
}
}
}
function d3_layout_hierarchyVisitAfter(node, callback) {
var nodes = [ node ], nodes2 = [];
while ((node = nodes.pop()) != null) {
nodes2.push(node);
if ((children = node.children) && (n = children.length)) {
var i = -1, n, children;
while (++i < n) nodes.push(children[i]);
}
}
while ((node = nodes2.pop()) != null) {
callback(node);
}
}
function d3_layout_hierarchyChildren(d) {
return d.children;
}
function d3_layout_hierarchyValue(d) {
return d.value;
}
function d3_layout_hierarchySort(a, b) {
return b.value - a.value;
}
function d3_layout_hierarchyLinks(nodes) {
return d3.merge(nodes.map(function(parent) {
return (parent.children || []).map(function(child) {
return {
source: parent,
target: child
};
});
}));
}
d3.layout.partition = function() {
var hierarchy = d3.layout.hierarchy(), size = [ 1, 1 ];
function position(node, x, dx, dy) {
var children = node.children;
node.x = x;
node.y = node.depth * dy;
node.dx = dx;
node.dy = dy;
if (children && (n = children.length)) {
var i = -1, n, c, d;
dx = node.value ? dx / node.value : 0;
while (++i < n) {
position(c = children[i], x, d = c.value * dx, dy);
x += d;
}
}
}
function depth(node) {
var children = node.children, d = 0;
if (children && (n = children.length)) {
var i = -1, n;
while (++i < n) d = Math.max(d, depth(children[i]));
}
return 1 + d;
}
function partition(d, i) {
var nodes = hierarchy.call(this, d, i);
position(nodes[0], 0, size[0], size[1] / depth(nodes[0]));
return nodes;
}
partition.size = function(x) {
if (!arguments.length) return size;
size = x;
return partition;
};
return d3_layout_hierarchyRebind(partition, hierarchy);
};
d3.layout.pie = function() {
var value = Number, sort = d3_layout_pieSortByValue, startAngle = 0, endAngle = τ, padAngle = 0;
function pie(data) {
var n = data.length, values = data.map(function(d, i) {
return +value.call(pie, d, i);
}), a = +(typeof startAngle === "function" ? startAngle.apply(this, arguments) : startAngle), da = (typeof endAngle === "function" ? endAngle.apply(this, arguments) : endAngle) - a, p = Math.min(Math.abs(da) / n, +(typeof padAngle === "function" ? padAngle.apply(this, arguments) : padAngle)), pa = p * (da < 0 ? -1 : 1), sum = d3.sum(values), k = sum ? (da - n * pa) / sum : 0, index = d3.range(n), arcs = [], v;
if (sort != null) index.sort(sort === d3_layout_pieSortByValue ? function(i, j) {
return values[j] - values[i];
} : function(i, j) {
return sort(data[i], data[j]);
});
index.forEach(function(i) {
arcs[i] = {
data: data[i],
value: v = values[i],
startAngle: a,
endAngle: a += v * k + pa,
padAngle: p
};
});
return arcs;
}
pie.value = function(_) {
if (!arguments.length) return value;
value = _;
return pie;
};
pie.sort = function(_) {
if (!arguments.length) return sort;
sort = _;
return pie;
};
pie.startAngle = function(_) {
if (!arguments.length) return startAngle;
startAngle = _;
return pie;
};
pie.endAngle = function(_) {
if (!arguments.length) return endAngle;
endAngle = _;
return pie;
};
pie.padAngle = function(_) {
if (!arguments.length) return padAngle;
padAngle = _;
return pie;
};
return pie;
};
var d3_layout_pieSortByValue = {};
d3.layout.stack = function() {
var values = d3_identity, order = d3_layout_stackOrderDefault, offset = d3_layout_stackOffsetZero, out = d3_layout_stackOut, x = d3_layout_stackX, y = d3_layout_stackY;
function stack(data, index) {
if (!(n = data.length)) return data;
var series = data.map(function(d, i) {
return values.call(stack, d, i);
});
var points = series.map(function(d) {
return d.map(function(v, i) {
return [ x.call(stack, v, i), y.call(stack, v, i) ];
});
});
var orders = order.call(stack, points, index);
series = d3.permute(series, orders);
points = d3.permute(points, orders);
var offsets = offset.call(stack, points, index);
var m = series[0].length, n, i, j, o;
for (j = 0; j < m; ++j) {
out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
for (i = 1; i < n; ++i) {
out.call(stack, series[i][j], o += points[i - 1][j][1], points[i][j][1]);
}
}
return data;
}
stack.values = function(x) {
if (!arguments.length) return values;
values = x;
return stack;
};
stack.order = function(x) {
if (!arguments.length) return order;
order = typeof x === "function" ? x : d3_layout_stackOrders.get(x) || d3_layout_stackOrderDefault;
return stack;
};
stack.offset = function(x) {
if (!arguments.length) return offset;
offset = typeof x === "function" ? x : d3_layout_stackOffsets.get(x) || d3_layout_stackOffsetZero;
return stack;
};
stack.x = function(z) {
if (!arguments.length) return x;
x = z;
return stack;
};
stack.y = function(z) {
if (!arguments.length) return y;
y = z;
return stack;
};
stack.out = function(z) {
if (!arguments.length) return out;
out = z;
return stack;
};
return stack;
};
function d3_layout_stackX(d) {
return d.x;
}
function d3_layout_stackY(d) {
return d.y;
}
function d3_layout_stackOut(d, y0, y) {
d.y0 = y0;
d.y = y;
}
var d3_layout_stackOrders = d3.map({
"inside-out": function(data) {
var n = data.length, i, j, max = data.map(d3_layout_stackMaxIndex), sums = data.map(d3_layout_stackReduceSum), index = d3.range(n).sort(function(a, b) {
return max[a] - max[b];
}), top = 0, bottom = 0, tops = [], bottoms = [];
for (i = 0; i < n; ++i) {
j = index[i];
if (top < bottom) {
top += sums[j];
tops.push(j);
} else {
bottom += sums[j];
bottoms.push(j);
}
}
return bottoms.reverse().concat(tops);
},
reverse: function(data) {
return d3.range(data.length).reverse();
},
"default": d3_layout_stackOrderDefault
});
var d3_layout_stackOffsets = d3.map({
silhouette: function(data) {
var n = data.length, m = data[0].length, sums = [], max = 0, i, j, o, y0 = [];
for (j = 0; j < m; ++j) {
for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
if (o > max) max = o;
sums.push(o);
}
for (j = 0; j < m; ++j) {
y0[j] = (max - sums[j]) / 2;
}
return y0;
},
wiggle: function(data) {
var n = data.length, x = data[0], m = x.length, i, j, k, s1, s2, s3, dx, o, o0, y0 = [];
y0[0] = o = o0 = 0;
for (j = 1; j < m; ++j) {
for (i = 0, s1 = 0; i < n; ++i) s1 += data[i][j][1];
for (i = 0, s2 = 0, dx = x[j][0] - x[j - 1][0]; i < n; ++i) {
for (k = 0, s3 = (data[i][j][1] - data[i][j - 1][1]) / (2 * dx); k < i; ++k) {
s3 += (data[k][j][1] - data[k][j - 1][1]) / dx;
}
s2 += s3 * data[i][j][1];
}
y0[j] = o -= s1 ? s2 / s1 * dx : 0;
if (o < o0) o0 = o;
}
for (j = 0; j < m; ++j) y0[j] -= o0;
return y0;
},
expand: function(data) {
var n = data.length, m = data[0].length, k = 1 / n, i, j, o, y0 = [];
for (j = 0; j < m; ++j) {
for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
if (o) for (i = 0; i < n; i++) data[i][j][1] /= o; else for (i = 0; i < n; i++) data[i][j][1] = k;
}
for (j = 0; j < m; ++j) y0[j] = 0;
return y0;
},
zero: d3_layout_stackOffsetZero
});
function d3_layout_stackOrderDefault(data) {
return d3.range(data.length);
}
function d3_layout_stackOffsetZero(data) {
var j = -1, m = data[0].length, y0 = [];
while (++j < m) y0[j] = 0;
return y0;
}
function d3_layout_stackMaxIndex(array) {
var i = 1, j = 0, v = array[0][1], k, n = array.length;
for (;i < n; ++i) {
if ((k = array[i][1]) > v) {
j = i;
v = k;
}
}
return j;
}
function d3_layout_stackReduceSum(d) {
return d.reduce(d3_layout_stackSum, 0);
}
function d3_layout_stackSum(p, d) {
return p + d[1];
}
d3.layout.histogram = function() {
var frequency = true, valuer = Number, ranger = d3_layout_histogramRange, binner = d3_layout_histogramBinSturges;
function histogram(data, i) {
var bins = [], values = data.map(valuer, this), range = ranger.call(this, values, i), thresholds = binner.call(this, range, values, i), bin, i = -1, n = values.length, m = thresholds.length - 1, k = frequency ? 1 : 1 / n, x;
while (++i < m) {
bin = bins[i] = [];
bin.dx = thresholds[i + 1] - (bin.x = thresholds[i]);
bin.y = 0;
}
if (m > 0) {
i = -1;
while (++i < n) {
x = values[i];
if (x >= range[0] && x <= range[1]) {
bin = bins[d3.bisect(thresholds, x, 1, m) - 1];
bin.y += k;
bin.push(data[i]);
}
}
}
return bins;
}
histogram.value = function(x) {
if (!arguments.length) return valuer;
valuer = x;
return histogram;
};
histogram.range = function(x) {
if (!arguments.length) return ranger;
ranger = d3_functor(x);
return histogram;
};
histogram.bins = function(x) {
if (!arguments.length) return binner;
binner = typeof x === "number" ? function(range) {
return d3_layout_histogramBinFixed(range, x);
} : d3_functor(x);
return histogram;
};
histogram.frequency = function(x) {
if (!arguments.length) return frequency;
frequency = !!x;
return histogram;
};
return histogram;
};
function d3_layout_histogramBinSturges(range, values) {
return d3_layout_histogramBinFixed(range, Math.ceil(Math.log(values.length) / Math.LN2 + 1));
}
function d3_layout_histogramBinFixed(range, n) {
var x = -1, b = +range[0], m = (range[1] - b) / n, f = [];
while (++x <= n) f[x] = m * x + b;
return f;
}
function d3_layout_histogramRange(values) {
return [ d3.min(values), d3.max(values) ];
}
d3.layout.pack = function() {
var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort), padding = 0, size = [ 1, 1 ], radius;
function pack(d, i) {
var nodes = hierarchy.call(this, d, i), root = nodes[0], w = size[0], h = size[1], r = radius == null ? Math.sqrt : typeof radius === "function" ? radius : function() {
return radius;
};
root.x = root.y = 0;
d3_layout_hierarchyVisitAfter(root, function(d) {
d.r = +r(d.value);
});
d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
if (padding) {
var dr = padding * (radius ? 1 : Math.max(2 * root.r / w, 2 * root.r / h)) / 2;
d3_layout_hierarchyVisitAfter(root, function(d) {
d.r += dr;
});
d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
d3_layout_hierarchyVisitAfter(root, function(d) {
d.r -= dr;
});
}
d3_layout_packTransform(root, w / 2, h / 2, radius ? 1 : 1 / Math.max(2 * root.r / w, 2 * root.r / h));
return nodes;
}
pack.size = function(_) {
if (!arguments.length) return size;
size = _;
return pack;
};
pack.radius = function(_) {
if (!arguments.length) return radius;
radius = _ == null || typeof _ === "function" ? _ : +_;
return pack;
};
pack.padding = function(_) {
if (!arguments.length) return padding;
padding = +_;
return pack;
};
return d3_layout_hierarchyRebind(pack, hierarchy);
};
function d3_layout_packSort(a, b) {
return a.value - b.value;
}
function d3_layout_packInsert(a, b) {
var c = a._pack_next;
a._pack_next = b;
b._pack_prev = a;
b._pack_next = c;
c._pack_prev = b;
}
function d3_layout_packSplice(a, b) {
a._pack_next = b;
b._pack_prev = a;
}
function d3_layout_packIntersects(a, b) {
var dx = b.x - a.x, dy = b.y - a.y, dr = a.r + b.r;
return .999 * dr * dr > dx * dx + dy * dy;
}
function d3_layout_packSiblings(node) {
if (!(nodes = node.children) || !(n = nodes.length)) return;
var nodes, xMin = Infinity, xMax = -Infinity, yMin = Infinity, yMax = -Infinity, a, b, c, i, j, k, n;
function bound(node) {
xMin = Math.min(node.x - node.r, xMin);
xMax = Math.max(node.x + node.r, xMax);
yMin = Math.min(node.y - node.r, yMin);
yMax = Math.max(node.y + node.r, yMax);
}
nodes.forEach(d3_layout_packLink);
a = nodes[0];
a.x = -a.r;
a.y = 0;
bound(a);
if (n > 1) {
b = nodes[1];
b.x = b.r;
b.y = 0;
bound(b);
if (n > 2) {
c = nodes[2];
d3_layout_packPlace(a, b, c);
bound(c);
d3_layout_packInsert(a, c);
a._pack_prev = c;
d3_layout_packInsert(c, b);
b = a._pack_next;
for (i = 3; i < n; i++) {
d3_layout_packPlace(a, b, c = nodes[i]);
var isect = 0, s1 = 1, s2 = 1;
for (j = b._pack_next; j !== b; j = j._pack_next, s1++) {
if (d3_layout_packIntersects(j, c)) {
isect = 1;
break;
}
}
if (isect == 1) {
for (k = a._pack_prev; k !== j._pack_prev; k = k._pack_prev, s2++) {
if (d3_layout_packIntersects(k, c)) {
break;
}
}
}
if (isect) {
if (s1 < s2 || s1 == s2 && b.r < a.r) d3_layout_packSplice(a, b = j); else d3_layout_packSplice(a = k, b);
i--;
} else {
d3_layout_packInsert(a, c);
b = c;
bound(c);
}
}
}
}
var cx = (xMin + xMax) / 2, cy = (yMin + yMax) / 2, cr = 0;
for (i = 0; i < n; i++) {
c = nodes[i];
c.x -= cx;
c.y -= cy;
cr = Math.max(cr, c.r + Math.sqrt(c.x * c.x + c.y * c.y));
}
node.r = cr;
nodes.forEach(d3_layout_packUnlink);
}
function d3_layout_packLink(node) {
node._pack_next = node._pack_prev = node;
}
function d3_layout_packUnlink(node) {
delete node._pack_next;
delete node._pack_prev;
}
function d3_layout_packTransform(node, x, y, k) {
var children = node.children;
node.x = x += k * node.x;
node.y = y += k * node.y;
node.r *= k;
if (children) {
var i = -1, n = children.length;
while (++i < n) d3_layout_packTransform(children[i], x, y, k);
}
}
function d3_layout_packPlace(a, b, c) {
var db = a.r + c.r, dx = b.x - a.x, dy = b.y - a.y;
if (db && (dx || dy)) {
var da = b.r + c.r, dc = dx * dx + dy * dy;
da *= da;
db *= db;
var x = .5 + (db - da) / (2 * dc), y = Math.sqrt(Math.max(0, 2 * da * (db + dc) - (db -= dc) * db - da * da)) / (2 * dc);
c.x = a.x + x * dx + y * dy;
c.y = a.y + x * dy - y * dx;
} else {
c.x = a.x + db;
c.y = a.y;
}
}
d3.layout.tree = function() {
var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = null;
function tree(d, i) {
var nodes = hierarchy.call(this, d, i), root0 = nodes[0], root1 = wrapTree(root0);
d3_layout_hierarchyVisitAfter(root1, firstWalk), root1.parent.m = -root1.z;
d3_layout_hierarchyVisitBefore(root1, secondWalk);
if (nodeSize) d3_layout_hierarchyVisitBefore(root0, sizeNode); else {
var left = root0, right = root0, bottom = root0;
d3_layout_hierarchyVisitBefore(root0, function(node) {
if (node.x < left.x) left = node;
if (node.x > right.x) right = node;
if (node.depth > bottom.depth) bottom = node;
});
var tx = separation(left, right) / 2 - left.x, kx = size[0] / (right.x + separation(right, left) / 2 + tx), ky = size[1] / (bottom.depth || 1);
d3_layout_hierarchyVisitBefore(root0, function(node) {
node.x = (node.x + tx) * kx;
node.y = node.depth * ky;
});
}
return nodes;
}
function wrapTree(root0) {
var root1 = {
A: null,
children: [ root0 ]
}, queue = [ root1 ], node1;
while ((node1 = queue.pop()) != null) {
for (var children = node1.children, child, i = 0, n = children.length; i < n; ++i) {
queue.push((children[i] = child = {
_: children[i],
parent: node1,
children: (child = children[i].children) && child.slice() || [],
A: null,
a: null,
z: 0,
m: 0,
c: 0,
s: 0,
t: null,
i: i
}).a = child);
}
}
return root1.children[0];
}
function firstWalk(v) {
var children = v.children, siblings = v.parent.children, w = v.i ? siblings[v.i - 1] : null;
if (children.length) {
d3_layout_treeShift(v);
var midpoint = (children[0].z + children[children.length - 1].z) / 2;
if (w) {
v.z = w.z + separation(v._, w._);
v.m = v.z - midpoint;
} else {
v.z = midpoint;
}
} else if (w) {
v.z = w.z + separation(v._, w._);
}
v.parent.A = apportion(v, w, v.parent.A || siblings[0]);
}
function secondWalk(v) {
v._.x = v.z + v.parent.m;
v.m += v.parent.m;
}
function apportion(v, w, ancestor) {
if (w) {
var vip = v, vop = v, vim = w, vom = vip.parent.children[0], sip = vip.m, sop = vop.m, sim = vim.m, som = vom.m, shift;
while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
vom = d3_layout_treeLeft(vom);
vop = d3_layout_treeRight(vop);
vop.a = v;
shift = vim.z + sim - vip.z - sip + separation(vim._, vip._);
if (shift > 0) {
d3_layout_treeMove(d3_layout_treeAncestor(vim, v, ancestor), v, shift);
sip += shift;
sop += shift;
}
sim += vim.m;
sip += vip.m;
som += vom.m;
sop += vop.m;
}
if (vim && !d3_layout_treeRight(vop)) {
vop.t = vim;
vop.m += sim - sop;
}
if (vip && !d3_layout_treeLeft(vom)) {
vom.t = vip;
vom.m += sip - som;
ancestor = v;
}
}
return ancestor;
}
function sizeNode(node) {
node.x *= size[0];
node.y = node.depth * size[1];
}
tree.separation = function(x) {
if (!arguments.length) return separation;
separation = x;
return tree;
};
tree.size = function(x) {
if (!arguments.length) return nodeSize ? null : size;
nodeSize = (size = x) == null ? sizeNode : null;
return tree;
};
tree.nodeSize = function(x) {
if (!arguments.length) return nodeSize ? size : null;
nodeSize = (size = x) == null ? null : sizeNode;
return tree;
};
return d3_layout_hierarchyRebind(tree, hierarchy);
};
function d3_layout_treeSeparation(a, b) {
return a.parent == b.parent ? 1 : 2;
}
function d3_layout_treeLeft(v) {
var children = v.children;
return children.length ? children[0] : v.t;
}
function d3_layout_treeRight(v) {
var children = v.children, n;
return (n = children.length) ? children[n - 1] : v.t;
}
function d3_layout_treeMove(wm, wp, shift) {
var change = shift / (wp.i - wm.i);
wp.c -= change;
wp.s += shift;
wm.c += change;
wp.z += shift;
wp.m += shift;
}
function d3_layout_treeShift(v) {
var shift = 0, change = 0, children = v.children, i = children.length, w;
while (--i >= 0) {
w = children[i];
w.z += shift;
w.m += shift;
shift += w.s + (change += w.c);
}
}
function d3_layout_treeAncestor(vim, v, ancestor) {
return vim.a.parent === v.parent ? vim.a : ancestor;
}
d3.layout.cluster = function() {
var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = false;
function cluster(d, i) {
var nodes = hierarchy.call(this, d, i), root = nodes[0], previousNode, x = 0;
d3_layout_hierarchyVisitAfter(root, function(node) {
var children = node.children;
if (children && children.length) {
node.x = d3_layout_clusterX(children);
node.y = d3_layout_clusterY(children);
} else {
node.x = previousNode ? x += separation(node, previousNode) : 0;
node.y = 0;
previousNode = node;
}
});
var left = d3_layout_clusterLeft(root), right = d3_layout_clusterRight(root), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2;
d3_layout_hierarchyVisitAfter(root, nodeSize ? function(node) {
node.x = (node.x - root.x) * size[0];
node.y = (root.y - node.y) * size[1];
} : function(node) {
node.x = (node.x - x0) / (x1 - x0) * size[0];
node.y = (1 - (root.y ? node.y / root.y : 1)) * size[1];
});
return nodes;
}
cluster.separation = function(x) {
if (!arguments.length) return separation;
separation = x;
return cluster;
};
cluster.size = function(x) {
if (!arguments.length) return nodeSize ? null : size;
nodeSize = (size = x) == null;
return cluster;
};
cluster.nodeSize = function(x) {
if (!arguments.length) return nodeSize ? size : null;
nodeSize = (size = x) != null;
return cluster;
};
return d3_layout_hierarchyRebind(cluster, hierarchy);
};
function d3_layout_clusterY(children) {
return 1 + d3.max(children, function(child) {
return child.y;
});
}
function d3_layout_clusterX(children) {
return children.reduce(function(x, child) {
return x + child.x;
}, 0) / children.length;
}
function d3_layout_clusterLeft(node) {
var children = node.children;
return children && children.length ? d3_layout_clusterLeft(children[0]) : node;
}
function d3_layout_clusterRight(node) {
var children = node.children, n;
return children && (n = children.length) ? d3_layout_clusterRight(children[n - 1]) : node;
}
d3.layout.treemap = function() {
var hierarchy = d3.layout.hierarchy(), round = Math.round, size = [ 1, 1 ], padding = null, pad = d3_layout_treemapPadNull, sticky = false, stickies, mode = "squarify", ratio = .5 * (1 + Math.sqrt(5));
function scale(children, k) {
var i = -1, n = children.length, child, area;
while (++i < n) {
area = (child = children[i]).value * (k < 0 ? 0 : k);
child.area = isNaN(area) || area <= 0 ? 0 : area;
}
}
function squarify(node) {
var children = node.children;
if (children && children.length) {
var rect = pad(node), row = [], remaining = children.slice(), child, best = Infinity, score, u = mode === "slice" ? rect.dx : mode === "dice" ? rect.dy : mode === "slice-dice" ? node.depth & 1 ? rect.dy : rect.dx : Math.min(rect.dx, rect.dy), n;
scale(remaining, rect.dx * rect.dy / node.value);
row.area = 0;
while ((n = remaining.length) > 0) {
row.push(child = remaining[n - 1]);
row.area += child.area;
if (mode !== "squarify" || (score = worst(row, u)) <= best) {
remaining.pop();
best = score;
} else {
row.area -= row.pop().area;
position(row, u, rect, false);
u = Math.min(rect.dx, rect.dy);
row.length = row.area = 0;
best = Infinity;
}
}
if (row.length) {
position(row, u, rect, true);
row.length = row.area = 0;
}
children.forEach(squarify);
}
}
function stickify(node) {
var children = node.children;
if (children && children.length) {
var rect = pad(node), remaining = children.slice(), child, row = [];
scale(remaining, rect.dx * rect.dy / node.value);
row.area = 0;
while (child = remaining.pop()) {
row.push(child);
row.area += child.area;
if (child.z != null) {
position(row, child.z ? rect.dx : rect.dy, rect, !remaining.length);
row.length = row.area = 0;
}
}
children.forEach(stickify);
}
}
function worst(row, u) {
var s = row.area, r, rmax = 0, rmin = Infinity, i = -1, n = row.length;
while (++i < n) {
if (!(r = row[i].area)) continue;
if (r < rmin) rmin = r;
if (r > rmax) rmax = r;
}
s *= s;
u *= u;
return s ? Math.max(u * rmax * ratio / s, s / (u * rmin * ratio)) : Infinity;
}
function position(row, u, rect, flush) {
var i = -1, n = row.length, x = rect.x, y = rect.y, v = u ? round(row.area / u) : 0, o;
if (u == rect.dx) {
if (flush || v > rect.dy) v = rect.dy;
while (++i < n) {
o = row[i];
o.x = x;
o.y = y;
o.dy = v;
x += o.dx = Math.min(rect.x + rect.dx - x, v ? round(o.area / v) : 0);
}
o.z = true;
o.dx += rect.x + rect.dx - x;
rect.y += v;
rect.dy -= v;
} else {
if (flush || v > rect.dx) v = rect.dx;
while (++i < n) {
o = row[i];
o.x = x;
o.y = y;
o.dx = v;
y += o.dy = Math.min(rect.y + rect.dy - y, v ? round(o.area / v) : 0);
}
o.z = false;
o.dy += rect.y + rect.dy - y;
rect.x += v;
rect.dx -= v;
}
}
function treemap(d) {
var nodes = stickies || hierarchy(d), root = nodes[0];
root.x = root.y = 0;
if (root.value) root.dx = size[0], root.dy = size[1]; else root.dx = root.dy = 0;
if (stickies) hierarchy.revalue(root);
scale([ root ], root.dx * root.dy / root.value);
(stickies ? stickify : squarify)(root);
if (sticky) stickies = nodes;
return nodes;
}
treemap.size = function(x) {
if (!arguments.length) return size;
size = x;
return treemap;
};
treemap.padding = function(x) {
if (!arguments.length) return padding;
function padFunction(node) {
var p = x.call(treemap, node, node.depth);
return p == null ? d3_layout_treemapPadNull(node) : d3_layout_treemapPad(node, typeof p === "number" ? [ p, p, p, p ] : p);
}
function padConstant(node) {
return d3_layout_treemapPad(node, x);
}
var type;
pad = (padding = x) == null ? d3_layout_treemapPadNull : (type = typeof x) === "function" ? padFunction : type === "number" ? (x = [ x, x, x, x ],
padConstant) : padConstant;
return treemap;
};
treemap.round = function(x) {
if (!arguments.length) return round != Number;
round = x ? Math.round : Number;
return treemap;
};
treemap.sticky = function(x) {
if (!arguments.length) return sticky;
sticky = x;
stickies = null;
return treemap;
};
treemap.ratio = function(x) {
if (!arguments.length) return ratio;
ratio = x;
return treemap;
};
treemap.mode = function(x) {
if (!arguments.length) return mode;
mode = x + "";
return treemap;
};
return d3_layout_hierarchyRebind(treemap, hierarchy);
};
function d3_layout_treemapPadNull(node) {
return {
x: node.x,
y: node.y,
dx: node.dx,
dy: node.dy
};
}
function d3_layout_treemapPad(node, padding) {
var x = node.x + padding[3], y = node.y + padding[0], dx = node.dx - padding[1] - padding[3], dy = node.dy - padding[0] - padding[2];
if (dx < 0) {
x += dx / 2;
dx = 0;
}
if (dy < 0) {
y += dy / 2;
dy = 0;
}
return {
x: x,
y: y,
dx: dx,
dy: dy
};
}
d3.random = {
normal: function(µ, σ) {
var n = arguments.length;
if (n < 2) σ = 1;
if (n < 1) µ = 0;
return function() {
var x, y, r;
do {
x = Math.random() * 2 - 1;
y = Math.random() * 2 - 1;
r = x * x + y * y;
} while (!r || r > 1);
return µ + σ * x * Math.sqrt(-2 * Math.log(r) / r);
};
},
logNormal: function() {
var random = d3.random.normal.apply(d3, arguments);
return function() {
return Math.exp(random());
};
},
bates: function(m) {
var random = d3.random.irwinHall(m);
return function() {
return random() / m;
};
},
irwinHall: function(m) {
return function() {
for (var s = 0, j = 0; j < m; j++) s += Math.random();
return s;
};
}
};
d3.scale = {};
function d3_scaleExtent(domain) {
var start = domain[0], stop = domain[domain.length - 1];
return start < stop ? [ start, stop ] : [ stop, start ];
}
function d3_scaleRange(scale) {
return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
}
function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
var u = uninterpolate(domain[0], domain[1]), i = interpolate(range[0], range[1]);
return function(x) {
return i(u(x));
};
}
function d3_scale_nice(domain, nice) {
var i0 = 0, i1 = domain.length - 1, x0 = domain[i0], x1 = domain[i1], dx;
if (x1 < x0) {
dx = i0, i0 = i1, i1 = dx;
dx = x0, x0 = x1, x1 = dx;
}
domain[i0] = nice.floor(x0);
domain[i1] = nice.ceil(x1);
return domain;
}
function d3_scale_niceStep(step) {
return step ? {
floor: function(x) {
return Math.floor(x / step) * step;
},
ceil: function(x) {
return Math.ceil(x / step) * step;
}
} : d3_scale_niceIdentity;
}
var d3_scale_niceIdentity = {
floor: d3_identity,
ceil: d3_identity
};
function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
var u = [], i = [], j = 0, k = Math.min(domain.length, range.length) - 1;
if (domain[k] < domain[0]) {
domain = domain.slice().reverse();
range = range.slice().reverse();
}
while (++j <= k) {
u.push(uninterpolate(domain[j - 1], domain[j]));
i.push(interpolate(range[j - 1], range[j]));
}
return function(x) {
var j = d3.bisect(domain, x, 1, k) - 1;
return i[j](u[j](x));
};
}
d3.scale.linear = function() {
return d3_scale_linear([ 0, 1 ], [ 0, 1 ], d3_interpolate, false);
};
function d3_scale_linear(domain, range, interpolate, clamp) {
var output, input;
function rescale() {
var linear = Math.min(domain.length, range.length) > 2 ? d3_scale_polylinear : d3_scale_bilinear, uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
output = linear(domain, range, uninterpolate, interpolate);
input = linear(range, domain, uninterpolate, d3_interpolate);
return scale;
}
function scale(x) {
return output(x);
}
scale.invert = function(y) {
return input(y);
};
scale.domain = function(x) {
if (!arguments.length) return domain;
domain = x.map(Number);
return rescale();
};
scale.range = function(x) {
if (!arguments.length) return range;
range = x;
return rescale();
};
scale.rangeRound = function(x) {
return scale.range(x).interpolate(d3_interpolateRound);
};
scale.clamp = function(x) {
if (!arguments.length) return clamp;
clamp = x;
return rescale();
};
scale.interpolate = function(x) {
if (!arguments.length) return interpolate;
interpolate = x;
return rescale();
};
scale.ticks = function(m) {
return d3_scale_linearTicks(domain, m);
};
scale.tickFormat = function(m, format) {
return d3_scale_linearTickFormat(domain, m, format);
};
scale.nice = function(m) {
d3_scale_linearNice(domain, m);
return rescale();
};
scale.copy = function() {
return d3_scale_linear(domain, range, interpolate, clamp);
};
return rescale();
}
function d3_scale_linearRebind(scale, linear) {
return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
}
function d3_scale_linearNice(domain, m) {
d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
return domain;
}
function d3_scale_linearTickRange(domain, m) {
if (m == null) m = 10;
var extent = d3_scaleExtent(domain), span = extent[1] - extent[0], step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)), err = m / span * step;
if (err <= .15) step *= 10; else if (err <= .35) step *= 5; else if (err <= .75) step *= 2;
extent[0] = Math.ceil(extent[0] / step) * step;
extent[1] = Math.floor(extent[1] / step) * step + step * .5;
extent[2] = step;
return extent;
}
function d3_scale_linearTicks(domain, m) {
return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
}
function d3_scale_linearTickFormat(domain, m, format) {
var range = d3_scale_linearTickRange(domain, m);
if (format) {
var match = d3_format_re.exec(format);
match.shift();
if (match[8] === "s") {
var prefix = d3.formatPrefix(Math.max(abs(range[0]), abs(range[1])));
if (!match[7]) match[7] = "." + d3_scale_linearPrecision(prefix.scale(range[2]));
match[8] = "f";
format = d3.format(match.join(""));
return function(d) {
return format(prefix.scale(d)) + prefix.symbol;
};
}
if (!match[7]) match[7] = "." + d3_scale_linearFormatPrecision(match[8], range);
format = match.join("");
} else {
format = ",." + d3_scale_linearPrecision(range[2]) + "f";
}
return d3.format(format);
}
var d3_scale_linearFormatSignificant = {
s: 1,
g: 1,
p: 1,
r: 1,
e: 1
};
function d3_scale_linearPrecision(value) {
return -Math.floor(Math.log(value) / Math.LN10 + .01);
}
function d3_scale_linearFormatPrecision(type, range) {
var p = d3_scale_linearPrecision(range[2]);
return type in d3_scale_linearFormatSignificant ? Math.abs(p - d3_scale_linearPrecision(Math.max(abs(range[0]), abs(range[1])))) + +(type !== "e") : p - (type === "%") * 2;
}
d3.scale.log = function() {
return d3_scale_log(d3.scale.linear().domain([ 0, 1 ]), 10, true, [ 1, 10 ]);
};
function d3_scale_log(linear, base, positive, domain) {
function log(x) {
return (positive ? Math.log(x < 0 ? 0 : x) : -Math.log(x > 0 ? 0 : -x)) / Math.log(base);
}
function pow(x) {
return positive ? Math.pow(base, x) : -Math.pow(base, -x);
}
function scale(x) {
return linear(log(x));
}
scale.invert = function(x) {
return pow(linear.invert(x));
};
scale.domain = function(x) {
if (!arguments.length) return domain;
positive = x[0] >= 0;
linear.domain((domain = x.map(Number)).map(log));
return scale;
};
scale.base = function(_) {
if (!arguments.length) return base;
base = +_;
linear.domain(domain.map(log));
return scale;
};
scale.nice = function() {
var niced = d3_scale_nice(domain.map(log), positive ? Math : d3_scale_logNiceNegative);
linear.domain(niced);
domain = niced.map(pow);
return scale;
};
scale.ticks = function() {
var extent = d3_scaleExtent(domain), ticks = [], u = extent[0], v = extent[1], i = Math.floor(log(u)), j = Math.ceil(log(v)), n = base % 1 ? 2 : base;
if (isFinite(j - i)) {
if (positive) {
for (;i < j; i++) for (var k = 1; k < n; k++) ticks.push(pow(i) * k);
ticks.push(pow(i));
} else {
ticks.push(pow(i));
for (;i++ < j; ) for (var k = n - 1; k > 0; k--) ticks.push(pow(i) * k);
}
for (i = 0; ticks[i] < u; i++) {}
for (j = ticks.length; ticks[j - 1] > v; j--) {}
ticks = ticks.slice(i, j);
}
return ticks;
};
scale.tickFormat = function(n, format) {
if (!arguments.length) return d3_scale_logFormat;
if (arguments.length < 2) format = d3_scale_logFormat; else if (typeof format !== "function") format = d3.format(format);
var k = Math.max(1, base * n / scale.ticks().length);
return function(d) {
var i = d / pow(Math.round(log(d)));
if (i * base < base - .5) i *= base;
return i <= k ? format(d) : "";
};
};
scale.copy = function() {
return d3_scale_log(linear.copy(), base, positive, domain);
};
return d3_scale_linearRebind(scale, linear);
}
var d3_scale_logFormat = d3.format(".0e"), d3_scale_logNiceNegative = {
floor: function(x) {
return -Math.ceil(-x);
},
ceil: function(x) {
return -Math.floor(-x);
}
};
d3.scale.pow = function() {
return d3_scale_pow(d3.scale.linear(), 1, [ 0, 1 ]);
};
function d3_scale_pow(linear, exponent, domain) {
var powp = d3_scale_powPow(exponent), powb = d3_scale_powPow(1 / exponent);
function scale(x) {
return linear(powp(x));
}
scale.invert = function(x) {
return powb(linear.invert(x));
};
scale.domain = function(x) {
if (!arguments.length) return domain;
linear.domain((domain = x.map(Number)).map(powp));
return scale;
};
scale.ticks = function(m) {
return d3_scale_linearTicks(domain, m);
};
scale.tickFormat = function(m, format) {
return d3_scale_linearTickFormat(domain, m, format);
};
scale.nice = function(m) {
return scale.domain(d3_scale_linearNice(domain, m));
};
scale.exponent = function(x) {
if (!arguments.length) return exponent;
powp = d3_scale_powPow(exponent = x);
powb = d3_scale_powPow(1 / exponent);
linear.domain(domain.map(powp));
return scale;
};
scale.copy = function() {
return d3_scale_pow(linear.copy(), exponent, domain);
};
return d3_scale_linearRebind(scale, linear);
}
function d3_scale_powPow(e) {
return function(x) {
return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
};
}
d3.scale.sqrt = function() {
return d3.scale.pow().exponent(.5);
};
d3.scale.ordinal = function() {
return d3_scale_ordinal([], {
t: "range",
a: [ [] ]
});
};
function d3_scale_ordinal(domain, ranger) {
var index, range, rangeBand;
function scale(x) {
return range[((index.get(x) || (ranger.t === "range" ? index.set(x, domain.push(x)) : NaN)) - 1) % range.length];
}
function steps(start, step) {
return d3.range(domain.length).map(function(i) {
return start + step * i;
});
}
scale.domain = function(x) {
if (!arguments.length) return domain;
domain = [];
index = new d3_Map();
var i = -1, n = x.length, xi;
while (++i < n) if (!index.has(xi = x[i])) index.set(xi, domain.push(xi));
return scale[ranger.t].apply(scale, ranger.a);
};
scale.range = function(x) {
if (!arguments.length) return range;
range = x;
rangeBand = 0;
ranger = {
t: "range",
a: arguments
};
return scale;
};
scale.rangePoints = function(x, padding) {
if (arguments.length < 2) padding = 0;
var start = x[0], stop = x[1], step = domain.length < 2 ? (start = (start + stop) / 2,
0) : (stop - start) / (domain.length - 1 + padding);
range = steps(start + step * padding / 2, step);
rangeBand = 0;
ranger = {
t: "rangePoints",
a: arguments
};
return scale;
};
scale.rangeRoundPoints = function(x, padding) {
if (arguments.length < 2) padding = 0;
var start = x[0], stop = x[1], step = domain.length < 2 ? (start = stop = Math.round((start + stop) / 2),
0) : (stop - start) / (domain.length - 1 + padding) | 0;
range = steps(start + Math.round(step * padding / 2 + (stop - start - (domain.length - 1 + padding) * step) / 2), step);
rangeBand = 0;
ranger = {
t: "rangeRoundPoints",
a: arguments
};
return scale;
};
scale.rangeBands = function(x, padding, outerPadding) {
if (arguments.length < 2) padding = 0;
if (arguments.length < 3) outerPadding = padding;
var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = (stop - start) / (domain.length - padding + 2 * outerPadding);
range = steps(start + step * outerPadding, step);
if (reverse) range.reverse();
rangeBand = step * (1 - padding);
ranger = {
t: "rangeBands",
a: arguments
};
return scale;
};
scale.rangeRoundBands = function(x, padding, outerPadding) {
if (arguments.length < 2) padding = 0;
if (arguments.length < 3) outerPadding = padding;
var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = Math.floor((stop - start) / (domain.length - padding + 2 * outerPadding));
range = steps(start + Math.round((stop - start - (domain.length - padding) * step) / 2), step);
if (reverse) range.reverse();
rangeBand = Math.round(step * (1 - padding));
ranger = {
t: "rangeRoundBands",
a: arguments
};
return scale;
};
scale.rangeBand = function() {
return rangeBand;
};
scale.rangeExtent = function() {
return d3_scaleExtent(ranger.a[0]);
};
scale.copy = function() {
return d3_scale_ordinal(domain, ranger);
};
return scale.domain(domain);
}
d3.scale.category10 = function() {
return d3.scale.ordinal().range(d3_category10);
};
d3.scale.category20 = function() {
return d3.scale.ordinal().range(d3_category20);
};
d3.scale.category20b = function() {
return d3.scale.ordinal().range(d3_category20b);
};
d3.scale.category20c = function() {
return d3.scale.ordinal().range(d3_category20c);
};
var d3_category10 = [ 2062260, 16744206, 2924588, 14034728, 9725885, 9197131, 14907330, 8355711, 12369186, 1556175 ].map(d3_rgbString);
var d3_category20 = [ 2062260, 11454440, 16744206, 16759672, 2924588, 10018698, 14034728, 16750742, 9725885, 12955861, 9197131, 12885140, 14907330, 16234194, 8355711, 13092807, 12369186, 14408589, 1556175, 10410725 ].map(d3_rgbString);
var d3_category20b = [ 3750777, 5395619, 7040719, 10264286, 6519097, 9216594, 11915115, 13556636, 9202993, 12426809, 15186514, 15190932, 8666169, 11356490, 14049643, 15177372, 8077683, 10834324, 13528509, 14589654 ].map(d3_rgbString);
var d3_category20c = [ 3244733, 7057110, 10406625, 13032431, 15095053, 16616764, 16625259, 16634018, 3253076, 7652470, 10607003, 13101504, 7695281, 10394312, 12369372, 14342891, 6513507, 9868950, 12434877, 14277081 ].map(d3_rgbString);
d3.scale.quantile = function() {
return d3_scale_quantile([], []);
};
function d3_scale_quantile(domain, range) {
var thresholds;
function rescale() {
var k = 0, q = range.length;
thresholds = [];
while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
return scale;
}
function scale(x) {
if (!isNaN(x = +x)) return range[d3.bisect(thresholds, x)];
}
scale.domain = function(x) {
if (!arguments.length) return domain;
domain = x.map(d3_number).filter(d3_numeric).sort(d3_ascending);
return rescale();
};
scale.range = function(x) {
if (!arguments.length) return range;
range = x;
return rescale();
};
scale.quantiles = function() {
return thresholds;
};
scale.invertExtent = function(y) {
y = range.indexOf(y);
return y < 0 ? [ NaN, NaN ] : [ y > 0 ? thresholds[y - 1] : domain[0], y < thresholds.length ? thresholds[y] : domain[domain.length - 1] ];
};
scale.copy = function() {
return d3_scale_quantile(domain, range);
};
return rescale();
}
d3.scale.quantize = function() {
return d3_scale_quantize(0, 1, [ 0, 1 ]);
};
function d3_scale_quantize(x0, x1, range) {
var kx, i;
function scale(x) {
return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
}
function rescale() {
kx = range.length / (x1 - x0);
i = range.length - 1;
return scale;
}
scale.domain = function(x) {
if (!arguments.length) return [ x0, x1 ];
x0 = +x[0];
x1 = +x[x.length - 1];
return rescale();
};
scale.range = function(x) {
if (!arguments.length) return range;
range = x;
return rescale();
};
scale.invertExtent = function(y) {
y = range.indexOf(y);
y = y < 0 ? NaN : y / kx + x0;
return [ y, y + 1 / kx ];
};
scale.copy = function() {
return d3_scale_quantize(x0, x1, range);
};
return rescale();
}
d3.scale.threshold = function() {
return d3_scale_threshold([ .5 ], [ 0, 1 ]);
};
function d3_scale_threshold(domain, range) {
function scale(x) {
if (x <= x) return range[d3.bisect(domain, x)];
}
scale.domain = function(_) {
if (!arguments.length) return domain;
domain = _;
return scale;
};
scale.range = function(_) {
if (!arguments.length) return range;
range = _;
return scale;
};
scale.invertExtent = function(y) {
y = range.indexOf(y);
return [ domain[y - 1], domain[y] ];
};
scale.copy = function() {
return d3_scale_threshold(domain, range);
};
return scale;
}
d3.scale.identity = function() {
return d3_scale_identity([ 0, 1 ]);
};
function d3_scale_identity(domain) {
function identity(x) {
return +x;
}
identity.invert = identity;
identity.domain = identity.range = function(x) {
if (!arguments.length) return domain;
domain = x.map(identity);
return identity;
};
identity.ticks = function(m) {
return d3_scale_linearTicks(domain, m);
};
identity.tickFormat = function(m, format) {
return d3_scale_linearTickFormat(domain, m, format);
};
identity.copy = function() {
return d3_scale_identity(domain);
};
return identity;
}
d3.svg = {};
function d3_zero() {
return 0;
}
d3.svg.arc = function() {
var innerRadius = d3_svg_arcInnerRadius, outerRadius = d3_svg_arcOuterRadius, cornerRadius = d3_zero, padRadius = d3_svg_arcAuto, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle, padAngle = d3_svg_arcPadAngle;
function arc() {
var r0 = Math.max(0, +innerRadius.apply(this, arguments)), r1 = Math.max(0, +outerRadius.apply(this, arguments)), a0 = startAngle.apply(this, arguments) - halfπ, a1 = endAngle.apply(this, arguments) - halfπ, da = Math.abs(a1 - a0), cw = a0 > a1 ? 0 : 1;
if (r1 < r0) rc = r1, r1 = r0, r0 = rc;
if (da >= τε) return circleSegment(r1, cw) + (r0 ? circleSegment(r0, 1 - cw) : "") + "Z";
var rc, cr, rp, ap, p0 = 0, p1 = 0, x0, y0, x1, y1, x2, y2, x3, y3, path = [];
if (ap = (+padAngle.apply(this, arguments) || 0) / 2) {
rp = padRadius === d3_svg_arcAuto ? Math.sqrt(r0 * r0 + r1 * r1) : +padRadius.apply(this, arguments);
if (!cw) p1 *= -1;
if (r1) p1 = d3_asin(rp / r1 * Math.sin(ap));
if (r0) p0 = d3_asin(rp / r0 * Math.sin(ap));
}
if (r1) {
x0 = r1 * Math.cos(a0 + p1);
y0 = r1 * Math.sin(a0 + p1);
x1 = r1 * Math.cos(a1 - p1);
y1 = r1 * Math.sin(a1 - p1);
var l1 = Math.abs(a1 - a0 - 2 * p1) <= π ? 0 : 1;
if (p1 && d3_svg_arcSweep(x0, y0, x1, y1) === cw ^ l1) {
var h1 = (a0 + a1) / 2;
x0 = r1 * Math.cos(h1);
y0 = r1 * Math.sin(h1);
x1 = y1 = null;
}
} else {
x0 = y0 = 0;
}
if (r0) {
x2 = r0 * Math.cos(a1 - p0);
y2 = r0 * Math.sin(a1 - p0);
x3 = r0 * Math.cos(a0 + p0);
y3 = r0 * Math.sin(a0 + p0);
var l0 = Math.abs(a0 - a1 + 2 * p0) <= π ? 0 : 1;
if (p0 && d3_svg_arcSweep(x2, y2, x3, y3) === 1 - cw ^ l0) {
var h0 = (a0 + a1) / 2;
x2 = r0 * Math.cos(h0);
y2 = r0 * Math.sin(h0);
x3 = y3 = null;
}
} else {
x2 = y2 = 0;
}
if (da > ε && (rc = Math.min(Math.abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments))) > .001) {
cr = r0 < r1 ^ cw ? 0 : 1;
var rc1 = rc, rc0 = rc;
if (da < π) {
var oc = x3 == null ? [ x2, y2 ] : x1 == null ? [ x0, y0 ] : d3_geom_polygonIntersect([ x0, y0 ], [ x3, y3 ], [ x1, y1 ], [ x2, y2 ]), ax = x0 - oc[0], ay = y0 - oc[1], bx = x1 - oc[0], by = y1 - oc[1], kc = 1 / Math.sin(Math.acos((ax * bx + ay * by) / (Math.sqrt(ax * ax + ay * ay) * Math.sqrt(bx * bx + by * by))) / 2), lc = Math.sqrt(oc[0] * oc[0] + oc[1] * oc[1]);
rc0 = Math.min(rc, (r0 - lc) / (kc - 1));
rc1 = Math.min(rc, (r1 - lc) / (kc + 1));
}
if (x1 != null) {
var t30 = d3_svg_arcCornerTangents(x3 == null ? [ x2, y2 ] : [ x3, y3 ], [ x0, y0 ], r1, rc1, cw), t12 = d3_svg_arcCornerTangents([ x1, y1 ], [ x2, y2 ], r1, rc1, cw);
if (rc === rc1) {
path.push("M", t30[0], "A", rc1, ",", rc1, " 0 0,", cr, " ", t30[1], "A", r1, ",", r1, " 0 ", 1 - cw ^ d3_svg_arcSweep(t30[1][0], t30[1][1], t12[1][0], t12[1][1]), ",", cw, " ", t12[1], "A", rc1, ",", rc1, " 0 0,", cr, " ", t12[0]);
} else {
path.push("M", t30[0], "A", rc1, ",", rc1, " 0 1,", cr, " ", t12[0]);
}
} else {
path.push("M", x0, ",", y0);
}
if (x3 != null) {
var t03 = d3_svg_arcCornerTangents([ x0, y0 ], [ x3, y3 ], r0, -rc0, cw), t21 = d3_svg_arcCornerTangents([ x2, y2 ], x1 == null ? [ x0, y0 ] : [ x1, y1 ], r0, -rc0, cw);
if (rc === rc0) {
path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t21[1], "A", r0, ",", r0, " 0 ", cw ^ d3_svg_arcSweep(t21[1][0], t21[1][1], t03[1][0], t03[1][1]), ",", 1 - cw, " ", t03[1], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
} else {
path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
}
} else {
path.push("L", x2, ",", y2);
}
} else {
path.push("M", x0, ",", y0);
if (x1 != null) path.push("A", r1, ",", r1, " 0 ", l1, ",", cw, " ", x1, ",", y1);
path.push("L", x2, ",", y2);
if (x3 != null) path.push("A", r0, ",", r0, " 0 ", l0, ",", 1 - cw, " ", x3, ",", y3);
}
path.push("Z");
return path.join("");
}
function circleSegment(r1, cw) {
return "M0," + r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + -r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + r1;
}
arc.innerRadius = function(v) {
if (!arguments.length) return innerRadius;
innerRadius = d3_functor(v);
return arc;
};
arc.outerRadius = function(v) {
if (!arguments.length) return outerRadius;
outerRadius = d3_functor(v);
return arc;
};
arc.cornerRadius = function(v) {
if (!arguments.length) return cornerRadius;
cornerRadius = d3_functor(v);
return arc;
};
arc.padRadius = function(v) {
if (!arguments.length) return padRadius;
padRadius = v == d3_svg_arcAuto ? d3_svg_arcAuto : d3_functor(v);
return arc;
};
arc.startAngle = function(v) {
if (!arguments.length) return startAngle;
startAngle = d3_functor(v);
return arc;
};
arc.endAngle = function(v) {
if (!arguments.length) return endAngle;
endAngle = d3_functor(v);
return arc;
};
arc.padAngle = function(v) {
if (!arguments.length) return padAngle;
padAngle = d3_functor(v);
return arc;
};
arc.centroid = function() {
var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - halfπ;
return [ Math.cos(a) * r, Math.sin(a) * r ];
};
return arc;
};
var d3_svg_arcAuto = "auto";
function d3_svg_arcInnerRadius(d) {
return d.innerRadius;
}
function d3_svg_arcOuterRadius(d) {
return d.outerRadius;
}
function d3_svg_arcStartAngle(d) {
return d.startAngle;
}
function d3_svg_arcEndAngle(d) {
return d.endAngle;
}
function d3_svg_arcPadAngle(d) {
return d && d.padAngle;
}
function d3_svg_arcSweep(x0, y0, x1, y1) {
return (x0 - x1) * y0 - (y0 - y1) * x0 > 0 ? 0 : 1;
}
function d3_svg_arcCornerTangents(p0, p1, r1, rc, cw) {
var x01 = p0[0] - p1[0], y01 = p0[1] - p1[1], lo = (cw ? rc : -rc) / Math.sqrt(x01 * x01 + y01 * y01), ox = lo * y01, oy = -lo * x01, x1 = p0[0] + ox, y1 = p0[1] + oy, x2 = p1[0] + ox, y2 = p1[1] + oy, x3 = (x1 + x2) / 2, y3 = (y1 + y2) / 2, dx = x2 - x1, dy = y2 - y1, d2 = dx * dx + dy * dy, r = r1 - rc, D = x1 * y2 - x2 * y1, d = (dy < 0 ? -1 : 1) * Math.sqrt(Math.max(0, r * r * d2 - D * D)), cx0 = (D * dy - dx * d) / d2, cy0 = (-D * dx - dy * d) / d2, cx1 = (D * dy + dx * d) / d2, cy1 = (-D * dx + dy * d) / d2, dx0 = cx0 - x3, dy0 = cy0 - y3, dx1 = cx1 - x3, dy1 = cy1 - y3;
if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1;
return [ [ cx0 - ox, cy0 - oy ], [ cx0 * r1 / r, cy0 * r1 / r ] ];
}
function d3_svg_line(projection) {
var x = d3_geom_pointX, y = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, tension = .7;
function line(data) {
var segments = [], points = [], i = -1, n = data.length, d, fx = d3_functor(x), fy = d3_functor(y);
function segment() {
segments.push("M", interpolate(projection(points), tension));
}
while (++i < n) {
if (defined.call(this, d = data[i], i)) {
points.push([ +fx.call(this, d, i), +fy.call(this, d, i) ]);
} else if (points.length) {
segment();
points = [];
}
}
if (points.length) segment();
return segments.length ? segments.join("") : null;
}
line.x = function(_) {
if (!arguments.length) return x;
x = _;
return line;
};
line.y = function(_) {
if (!arguments.length) return y;
y = _;
return line;
};
line.defined = function(_) {
if (!arguments.length) return defined;
defined = _;
return line;
};
line.interpolate = function(_) {
if (!arguments.length) return interpolateKey;
if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
return line;
};
line.tension = function(_) {
if (!arguments.length) return tension;
tension = _;
return line;
};
return line;
}
d3.svg.line = function() {
return d3_svg_line(d3_identity);
};
var d3_svg_lineInterpolators = d3.map({
linear: d3_svg_lineLinear,
"linear-closed": d3_svg_lineLinearClosed,
step: d3_svg_lineStep,
"step-before": d3_svg_lineStepBefore,
"step-after": d3_svg_lineStepAfter,
basis: d3_svg_lineBasis,
"basis-open": d3_svg_lineBasisOpen,
"basis-closed": d3_svg_lineBasisClosed,
bundle: d3_svg_lineBundle,
cardinal: d3_svg_lineCardinal,
"cardinal-open": d3_svg_lineCardinalOpen,
"cardinal-closed": d3_svg_lineCardinalClosed,
monotone: d3_svg_lineMonotone
});
d3_svg_lineInterpolators.forEach(function(key, value) {
value.key = key;
value.closed = /-closed$/.test(key);
});
function d3_svg_lineLinear(points) {
return points.length > 1 ? points.join("L") : points + "Z";
}
function d3_svg_lineLinearClosed(points) {
return points.join("L") + "Z";
}
function d3_svg_lineStep(points) {
var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
while (++i < n) path.push("H", (p[0] + (p = points[i])[0]) / 2, "V", p[1]);
if (n > 1) path.push("H", p[0]);
return path.join("");
}
function d3_svg_lineStepBefore(points) {
var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
return path.join("");
}
function d3_svg_lineStepAfter(points) {
var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
return path.join("");
}
function d3_svg_lineCardinalOpen(points, tension) {
return points.length < 4 ? d3_svg_lineLinear(points) : points[1] + d3_svg_lineHermite(points.slice(1, -1), d3_svg_lineCardinalTangents(points, tension));
}
function d3_svg_lineCardinalClosed(points, tension) {
return points.length < 3 ? d3_svg_lineLinearClosed(points) : points[0] + d3_svg_lineHermite((points.push(points[0]),
points), d3_svg_lineCardinalTangents([ points[points.length - 2] ].concat(points, [ points[1] ]), tension));
}
function d3_svg_lineCardinal(points, tension) {
return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineCardinalTangents(points, tension));
}
function d3_svg_lineHermite(points, tangents) {
if (tangents.length < 1 || points.length != tangents.length && points.length != tangents.length + 2) {
return d3_svg_lineLinear(points);
}
var quad = points.length != tangents.length, path = "", p0 = points[0], p = points[1], t0 = tangents[0], t = t0, pi = 1;
if (quad) {
path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3) + "," + p[0] + "," + p[1];
p0 = points[1];
pi = 2;
}
if (tangents.length > 1) {
t = tangents[1];
p = points[pi];
pi++;
path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1]) + "," + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
for (var i = 2; i < tangents.length; i++, pi++) {
p = points[pi];
t = tangents[i];
path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
}
}
if (quad) {
var lp = points[pi];
path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3) + "," + lp[0] + "," + lp[1];
}
return path;
}
function d3_svg_lineCardinalTangents(points, tension) {
var tangents = [], a = (1 - tension) / 2, p0, p1 = points[0], p2 = points[1], i = 1, n = points.length;
while (++i < n) {
p0 = p1;
p1 = p2;
p2 = points[i];
tangents.push([ a * (p2[0] - p0[0]), a * (p2[1] - p0[1]) ]);
}
return tangents;
}
function d3_svg_lineBasis(points) {
if (points.length < 3) return d3_svg_lineLinear(points);
var i = 1, n = points.length, pi = points[0], x0 = pi[0], y0 = pi[1], px = [ x0, x0, x0, (pi = points[1])[0] ], py = [ y0, y0, y0, pi[1] ], path = [ x0, ",", y0, "L", d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
points.push(points[n - 1]);
while (++i <= n) {
pi = points[i];
px.shift();
px.push(pi[0]);
py.shift();
py.push(pi[1]);
d3_svg_lineBasisBezier(path, px, py);
}
points.pop();
path.push("L", pi);
return path.join("");
}
function d3_svg_lineBasisOpen(points) {
if (points.length < 4) return d3_svg_lineLinear(points);
var path = [], i = -1, n = points.length, pi, px = [ 0 ], py = [ 0 ];
while (++i < 3) {
pi = points[i];
px.push(pi[0]);
py.push(pi[1]);
}
path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px) + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
--i;
while (++i < n) {
pi = points[i];
px.shift();
px.push(pi[0]);
py.shift();
py.push(pi[1]);
d3_svg_lineBasisBezier(path, px, py);
}
return path.join("");
}
function d3_svg_lineBasisClosed(points) {
var path, i = -1, n = points.length, m = n + 4, pi, px = [], py = [];
while (++i < 4) {
pi = points[i % n];
px.push(pi[0]);
py.push(pi[1]);
}
path = [ d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
--i;
while (++i < m) {
pi = points[i % n];
px.shift();
px.push(pi[0]);
py.shift();
py.push(pi[1]);
d3_svg_lineBasisBezier(path, px, py);
}
return path.join("");
}
function d3_svg_lineBundle(points, tension) {
var n = points.length - 1;
if (n) {
var x0 = points[0][0], y0 = points[0][1], dx = points[n][0] - x0, dy = points[n][1] - y0, i = -1, p, t;
while (++i <= n) {
p = points[i];
t = i / n;
p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
}
}
return d3_svg_lineBasis(points);
}
function d3_svg_lineDot4(a, b) {
return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
}
var d3_svg_lineBasisBezier1 = [ 0, 2 / 3, 1 / 3, 0 ], d3_svg_lineBasisBezier2 = [ 0, 1 / 3, 2 / 3, 0 ], d3_svg_lineBasisBezier3 = [ 0, 1 / 6, 2 / 3, 1 / 6 ];
function d3_svg_lineBasisBezier(path, x, y) {
path.push("C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
}
function d3_svg_lineSlope(p0, p1) {
return (p1[1] - p0[1]) / (p1[0] - p0[0]);
}
function d3_svg_lineFiniteDifferences(points) {
var i = 0, j = points.length - 1, m = [], p0 = points[0], p1 = points[1], d = m[0] = d3_svg_lineSlope(p0, p1);
while (++i < j) {
m[i] = (d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]))) / 2;
}
m[i] = d;
return m;
}
function d3_svg_lineMonotoneTangents(points) {
var tangents = [], d, a, b, s, m = d3_svg_lineFiniteDifferences(points), i = -1, j = points.length - 1;
while (++i < j) {
d = d3_svg_lineSlope(points[i], points[i + 1]);
if (abs(d) < ε) {
m[i] = m[i + 1] = 0;
} else {
a = m[i] / d;
b = m[i + 1] / d;
s = a * a + b * b;
if (s > 9) {
s = d * 3 / Math.sqrt(s);
m[i] = s * a;
m[i + 1] = s * b;
}
}
}
i = -1;
while (++i <= j) {
s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0]) / (6 * (1 + m[i] * m[i]));
tangents.push([ s || 0, m[i] * s || 0 ]);
}
return tangents;
}
function d3_svg_lineMonotone(points) {
return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
}
d3.svg.line.radial = function() {
var line = d3_svg_line(d3_svg_lineRadial);
line.radius = line.x, delete line.x;
line.angle = line.y, delete line.y;
return line;
};
function d3_svg_lineRadial(points) {
var point, i = -1, n = points.length, r, a;
while (++i < n) {
point = points[i];
r = point[0];
a = point[1] - halfπ;
point[0] = r * Math.cos(a);
point[1] = r * Math.sin(a);
}
return points;
}
function d3_svg_area(projection) {
var x0 = d3_geom_pointX, x1 = d3_geom_pointX, y0 = 0, y1 = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, interpolateReverse = interpolate, L = "L", tension = .7;
function area(data) {
var segments = [], points0 = [], points1 = [], i = -1, n = data.length, d, fx0 = d3_functor(x0), fy0 = d3_functor(y0), fx1 = x0 === x1 ? function() {
return x;
} : d3_functor(x1), fy1 = y0 === y1 ? function() {
return y;
} : d3_functor(y1), x, y;
function segment() {
segments.push("M", interpolate(projection(points1), tension), L, interpolateReverse(projection(points0.reverse()), tension), "Z");
}
while (++i < n) {
if (defined.call(this, d = data[i], i)) {
points0.push([ x = +fx0.call(this, d, i), y = +fy0.call(this, d, i) ]);
points1.push([ +fx1.call(this, d, i), +fy1.call(this, d, i) ]);
} else if (points0.length) {
segment();
points0 = [];
points1 = [];
}
}
if (points0.length) segment();
return segments.length ? segments.join("") : null;
}
area.x = function(_) {
if (!arguments.length) return x1;
x0 = x1 = _;
return area;
};
area.x0 = function(_) {
if (!arguments.length) return x0;
x0 = _;
return area;
};
area.x1 = function(_) {
if (!arguments.length) return x1;
x1 = _;
return area;
};
area.y = function(_) {
if (!arguments.length) return y1;
y0 = y1 = _;
return area;
};
area.y0 = function(_) {
if (!arguments.length) return y0;
y0 = _;
return area;
};
area.y1 = function(_) {
if (!arguments.length) return y1;
y1 = _;
return area;
};
area.defined = function(_) {
if (!arguments.length) return defined;
defined = _;
return area;
};
area.interpolate = function(_) {
if (!arguments.length) return interpolateKey;
if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
interpolateReverse = interpolate.reverse || interpolate;
L = interpolate.closed ? "M" : "L";
return area;
};
area.tension = function(_) {
if (!arguments.length) return tension;
tension = _;
return area;
};
return area;
}
d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
d3.svg.area = function() {
return d3_svg_area(d3_identity);
};
d3.svg.area.radial = function() {
var area = d3_svg_area(d3_svg_lineRadial);
area.radius = area.x, delete area.x;
area.innerRadius = area.x0, delete area.x0;
area.outerRadius = area.x1, delete area.x1;
area.angle = area.y, delete area.y;
area.startAngle = area.y0, delete area.y0;
area.endAngle = area.y1, delete area.y1;
return area;
};
d3.svg.chord = function() {
var source = d3_source, target = d3_target, radius = d3_svg_chordRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
function chord(d, i) {
var s = subgroup(this, source, d, i), t = subgroup(this, target, d, i);
return "M" + s.p0 + arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t) ? curve(s.r, s.p1, s.r, s.p0) : curve(s.r, s.p1, t.r, t.p0) + arc(t.r, t.p1, t.a1 - t.a0) + curve(t.r, t.p1, s.r, s.p0)) + "Z";
}
function subgroup(self, f, d, i) {
var subgroup = f.call(self, d, i), r = radius.call(self, subgroup, i), a0 = startAngle.call(self, subgroup, i) - halfπ, a1 = endAngle.call(self, subgroup, i) - halfπ;
return {
r: r,
a0: a0,
a1: a1,
p0: [ r * Math.cos(a0), r * Math.sin(a0) ],
p1: [ r * Math.cos(a1), r * Math.sin(a1) ]
};
}
function equals(a, b) {
return a.a0 == b.a0 && a.a1 == b.a1;
}
function arc(r, p, a) {
return "A" + r + "," + r + " 0 " + +(a > π) + ",1 " + p;
}
function curve(r0, p0, r1, p1) {
return "Q 0,0 " + p1;
}
chord.radius = function(v) {
if (!arguments.length) return radius;
radius = d3_functor(v);
return chord;
};
chord.source = function(v) {
if (!arguments.length) return source;
source = d3_functor(v);
return chord;
};
chord.target = function(v) {
if (!arguments.length) return target;
target = d3_functor(v);
return chord;
};
chord.startAngle = function(v) {
if (!arguments.length) return startAngle;
startAngle = d3_functor(v);
return chord;
};
chord.endAngle = function(v) {
if (!arguments.length) return endAngle;
endAngle = d3_functor(v);
return chord;
};
return chord;
};
function d3_svg_chordRadius(d) {
return d.radius;
}
d3.svg.diagonal = function() {
var source = d3_source, target = d3_target, projection = d3_svg_diagonalProjection;
function diagonal(d, i) {
var p0 = source.call(this, d, i), p3 = target.call(this, d, i), m = (p0.y + p3.y) / 2, p = [ p0, {
x: p0.x,
y: m
}, {
x: p3.x,
y: m
}, p3 ];
p = p.map(projection);
return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
}
diagonal.source = function(x) {
if (!arguments.length) return source;
source = d3_functor(x);
return diagonal;
};
diagonal.target = function(x) {
if (!arguments.length) return target;
target = d3_functor(x);
return diagonal;
};
diagonal.projection = function(x) {
if (!arguments.length) return projection;
projection = x;
return diagonal;
};
return diagonal;
};
function d3_svg_diagonalProjection(d) {
return [ d.x, d.y ];
}
d3.svg.diagonal.radial = function() {
var diagonal = d3.svg.diagonal(), projection = d3_svg_diagonalProjection, projection_ = diagonal.projection;
diagonal.projection = function(x) {
return arguments.length ? projection_(d3_svg_diagonalRadialProjection(projection = x)) : projection;
};
return diagonal;
};
function d3_svg_diagonalRadialProjection(projection) {
return function() {
var d = projection.apply(this, arguments), r = d[0], a = d[1] - halfπ;
return [ r * Math.cos(a), r * Math.sin(a) ];
};
}
d3.svg.symbol = function() {
var type = d3_svg_symbolType, size = d3_svg_symbolSize;
function symbol(d, i) {
return (d3_svg_symbols.get(type.call(this, d, i)) || d3_svg_symbolCircle)(size.call(this, d, i));
}
symbol.type = function(x) {
if (!arguments.length) return type;
type = d3_functor(x);
return symbol;
};
symbol.size = function(x) {
if (!arguments.length) return size;
size = d3_functor(x);
return symbol;
};
return symbol;
};
function d3_svg_symbolSize() {
return 64;
}
function d3_svg_symbolType() {
return "circle";
}
function d3_svg_symbolCircle(size) {
var r = Math.sqrt(size / π);
return "M0," + r + "A" + r + "," + r + " 0 1,1 0," + -r + "A" + r + "," + r + " 0 1,1 0," + r + "Z";
}
var d3_svg_symbols = d3.map({
circle: d3_svg_symbolCircle,
cross: function(size) {
var r = Math.sqrt(size / 5) / 2;
return "M" + -3 * r + "," + -r + "H" + -r + "V" + -3 * r + "H" + r + "V" + -r + "H" + 3 * r + "V" + r + "H" + r + "V" + 3 * r + "H" + -r + "V" + r + "H" + -3 * r + "Z";
},
diamond: function(size) {
var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)), rx = ry * d3_svg_symbolTan30;
return "M0," + -ry + "L" + rx + ",0" + " 0," + ry + " " + -rx + ",0" + "Z";
},
square: function(size) {
var r = Math.sqrt(size) / 2;
return "M" + -r + "," + -r + "L" + r + "," + -r + " " + r + "," + r + " " + -r + "," + r + "Z";
},
"triangle-down": function(size) {
var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
return "M0," + ry + "L" + rx + "," + -ry + " " + -rx + "," + -ry + "Z";
},
"triangle-up": function(size) {
var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
return "M0," + -ry + "L" + rx + "," + ry + " " + -rx + "," + ry + "Z";
}
});
d3.svg.symbolTypes = d3_svg_symbols.keys();
var d3_svg_symbolSqrt3 = Math.sqrt(3), d3_svg_symbolTan30 = Math.tan(30 * d3_radians);
d3_selectionPrototype.transition = function(name) {
var id = d3_transitionInheritId || ++d3_transitionId, ns = d3_transitionNamespace(name), subgroups = [], subgroup, node, transition = d3_transitionInherit || {
time: Date.now(),
ease: d3_ease_cubicInOut,
delay: 0,
duration: 250
};
for (var j = -1, m = this.length; ++j < m; ) {
subgroups.push(subgroup = []);
for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
if (node = group[i]) d3_transitionNode(node, i, ns, id, transition);
subgroup.push(node);
}
}
return d3_transition(subgroups, ns, id);
};
d3_selectionPrototype.interrupt = function(name) {
return this.each(name == null ? d3_selection_interrupt : d3_selection_interruptNS(d3_transitionNamespace(name)));
};
var d3_selection_interrupt = d3_selection_interruptNS(d3_transitionNamespace());
function d3_selection_interruptNS(ns) {
return function() {
var lock, activeId, active;
if ((lock = this[ns]) && (active = lock[activeId = lock.active])) {
active.timer.c = null;
active.timer.t = NaN;
if (--lock.count) delete lock[activeId]; else delete this[ns];
lock.active += .5;
active.event && active.event.interrupt.call(this, this.__data__, active.index);
}
};
}
function d3_transition(groups, ns, id) {
d3_subclass(groups, d3_transitionPrototype);
groups.namespace = ns;
groups.id = id;
return groups;
}
var d3_transitionPrototype = [], d3_transitionId = 0, d3_transitionInheritId, d3_transitionInherit;
d3_transitionPrototype.call = d3_selectionPrototype.call;
d3_transitionPrototype.empty = d3_selectionPrototype.empty;
d3_transitionPrototype.node = d3_selectionPrototype.node;
d3_transitionPrototype.size = d3_selectionPrototype.size;
d3.transition = function(selection, name) {
return selection && selection.transition ? d3_transitionInheritId ? selection.transition(name) : selection : d3.selection().transition(selection);
};
d3.transition.prototype = d3_transitionPrototype;
d3_transitionPrototype.select = function(selector) {
var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnode, node;
selector = d3_selection_selector(selector);
for (var j = -1, m = this.length; ++j < m; ) {
subgroups.push(subgroup = []);
for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
if ((node = group[i]) && (subnode = selector.call(node, node.__data__, i, j))) {
if ("__data__" in node) subnode.__data__ = node.__data__;
d3_transitionNode(subnode, i, ns, id, node[ns][id]);
subgroup.push(subnode);
} else {
subgroup.push(null);
}
}
}
return d3_transition(subgroups, ns, id);
};
d3_transitionPrototype.selectAll = function(selector) {
var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnodes, node, subnode, transition;
selector = d3_selection_selectorAll(selector);
for (var j = -1, m = this.length; ++j < m; ) {
for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
if (node = group[i]) {
transition = node[ns][id];
subnodes = selector.call(node, node.__data__, i, j);
subgroups.push(subgroup = []);
for (var k = -1, o = subnodes.length; ++k < o; ) {
if (subnode = subnodes[k]) d3_transitionNode(subnode, k, ns, id, transition);
subgroup.push(subnode);
}
}
}
}
return d3_transition(subgroups, ns, id);
};
d3_transitionPrototype.filter = function(filter) {
var subgroups = [], subgroup, group, node;
if (typeof filter !== "function") filter = d3_selection_filter(filter);
for (var j = 0, m = this.length; j < m; j++) {
subgroups.push(subgroup = []);
for (var group = this[j], i = 0, n = group.length; i < n; i++) {
if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
subgroup.push(node);
}
}
}
return d3_transition(subgroups, this.namespace, this.id);
};
d3_transitionPrototype.tween = function(name, tween) {
var id = this.id, ns = this.namespace;
if (arguments.length < 2) return this.node()[ns][id].tween.get(name);
return d3_selection_each(this, tween == null ? function(node) {
node[ns][id].tween.remove(name);
} : function(node) {
node[ns][id].tween.set(name, tween);
});
};
function d3_transition_tween(groups, name, value, tween) {
var id = groups.id, ns = groups.namespace;
return d3_selection_each(groups, typeof value === "function" ? function(node, i, j) {
node[ns][id].tween.set(name, tween(value.call(node, node.__data__, i, j)));
} : (value = tween(value), function(node) {
node[ns][id].tween.set(name, value);
}));
}
d3_transitionPrototype.attr = function(nameNS, value) {
if (arguments.length < 2) {
for (value in nameNS) this.attr(value, nameNS[value]);
return this;
}
var interpolate = nameNS == "transform" ? d3_interpolateTransform : d3_interpolate, name = d3.ns.qualify(nameNS);
function attrNull() {
this.removeAttribute(name);
}
function attrNullNS() {
this.removeAttributeNS(name.space, name.local);
}
function attrTween(b) {
return b == null ? attrNull : (b += "", function() {
var a = this.getAttribute(name), i;
return a !== b && (i = interpolate(a, b), function(t) {
this.setAttribute(name, i(t));
});
});
}
function attrTweenNS(b) {
return b == null ? attrNullNS : (b += "", function() {
var a = this.getAttributeNS(name.space, name.local), i;
return a !== b && (i = interpolate(a, b), function(t) {
this.setAttributeNS(name.space, name.local, i(t));
});
});
}
return d3_transition_tween(this, "attr." + nameNS, value, name.local ? attrTweenNS : attrTween);
};
d3_transitionPrototype.attrTween = function(nameNS, tween) {
var name = d3.ns.qualify(nameNS);
function attrTween(d, i) {
var f = tween.call(this, d, i, this.getAttribute(name));
return f && function(t) {
this.setAttribute(name, f(t));
};
}
function attrTweenNS(d, i) {
var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
return f && function(t) {
this.setAttributeNS(name.space, name.local, f(t));
};
}
return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
};
d3_transitionPrototype.style = function(name, value, priority) {
var n = arguments.length;
if (n < 3) {
if (typeof name !== "string") {
if (n < 2) value = "";
for (priority in name) this.style(priority, name[priority], value);
return this;
}
priority = "";
}
function styleNull() {
this.style.removeProperty(name);
}
function styleString(b) {
return b == null ? styleNull : (b += "", function() {
var a = d3_window(this).getComputedStyle(this, null).getPropertyValue(name), i;
return a !== b && (i = d3_interpolate(a, b), function(t) {
this.style.setProperty(name, i(t), priority);
});
});
}
return d3_transition_tween(this, "style." + name, value, styleString);
};
d3_transitionPrototype.styleTween = function(name, tween, priority) {
if (arguments.length < 3) priority = "";
function styleTween(d, i) {
var f = tween.call(this, d, i, d3_window(this).getComputedStyle(this, null).getPropertyValue(name));
return f && function(t) {
this.style.setProperty(name, f(t), priority);
};
}
return this.tween("style." + name, styleTween);
};
d3_transitionPrototype.text = function(value) {
return d3_transition_tween(this, "text", value, d3_transition_text);
};
function d3_transition_text(b) {
if (b == null) b = "";
return function() {
this.textContent = b;
};
}
d3_transitionPrototype.remove = function() {
var ns = this.namespace;
return this.each("end.transition", function() {
var p;
if (this[ns].count < 2 && (p = this.parentNode)) p.removeChild(this);
});
};
d3_transitionPrototype.ease = function(value) {
var id = this.id, ns = this.namespace;
if (arguments.length < 1) return this.node()[ns][id].ease;
if (typeof value !== "function") value = d3.ease.apply(d3, arguments);
return d3_selection_each(this, function(node) {
node[ns][id].ease = value;
});
};
d3_transitionPrototype.delay = function(value) {
var id = this.id, ns = this.namespace;
if (arguments.length < 1) return this.node()[ns][id].delay;
return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
node[ns][id].delay = +value.call(node, node.__data__, i, j);
} : (value = +value, function(node) {
node[ns][id].delay = value;
}));
};
d3_transitionPrototype.duration = function(value) {
var id = this.id, ns = this.namespace;
if (arguments.length < 1) return this.node()[ns][id].duration;
return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
node[ns][id].duration = Math.max(1, value.call(node, node.__data__, i, j));
} : (value = Math.max(1, value), function(node) {
node[ns][id].duration = value;
}));
};
d3_transitionPrototype.each = function(type, listener) {
var id = this.id, ns = this.namespace;
if (arguments.length < 2) {
var inherit = d3_transitionInherit, inheritId = d3_transitionInheritId;
try {
d3_transitionInheritId = id;
d3_selection_each(this, function(node, i, j) {
d3_transitionInherit = node[ns][id];
type.call(node, node.__data__, i, j);
});
} finally {
d3_transitionInherit = inherit;
d3_transitionInheritId = inheritId;
}
} else {
d3_selection_each(this, function(node) {
var transition = node[ns][id];
(transition.event || (transition.event = d3.dispatch("start", "end", "interrupt"))).on(type, listener);
});
}
return this;
};
d3_transitionPrototype.transition = function() {
var id0 = this.id, id1 = ++d3_transitionId, ns = this.namespace, subgroups = [], subgroup, group, node, transition;
for (var j = 0, m = this.length; j < m; j++) {
subgroups.push(subgroup = []);
for (var group = this[j], i = 0, n = group.length; i < n; i++) {
if (node = group[i]) {
transition = node[ns][id0];
d3_transitionNode(node, i, ns, id1, {
time: transition.time,
ease: transition.ease,
delay: transition.delay + transition.duration,
duration: transition.duration
});
}
subgroup.push(node);
}
}
return d3_transition(subgroups, ns, id1);
};
function d3_transitionNamespace(name) {
return name == null ? "__transition__" : "__transition_" + name + "__";
}
function d3_transitionNode(node, i, ns, id, inherit) {
var lock = node[ns] || (node[ns] = {
active: 0,
count: 0
}), transition = lock[id], time, timer, duration, ease, tweens;
function schedule(elapsed) {
var delay = transition.delay;
timer.t = delay + time;
if (delay <= elapsed) return start(elapsed - delay);
timer.c = start;
}
function start(elapsed) {
var activeId = lock.active, active = lock[activeId];
if (active) {
active.timer.c = null;
active.timer.t = NaN;
--lock.count;
delete lock[activeId];
active.event && active.event.interrupt.call(node, node.__data__, active.index);
}
for (var cancelId in lock) {
if (+cancelId < id) {
var cancel = lock[cancelId];
cancel.timer.c = null;
cancel.timer.t = NaN;
--lock.count;
delete lock[cancelId];
}
}
timer.c = tick;
d3_timer(function() {
if (timer.c && tick(elapsed || 1)) {
timer.c = null;
timer.t = NaN;
}
return 1;
}, 0, time);
lock.active = id;
transition.event && transition.event.start.call(node, node.__data__, i);
tweens = [];
transition.tween.forEach(function(key, value) {
if (value = value.call(node, node.__data__, i)) {
tweens.push(value);
}
});
ease = transition.ease;
duration = transition.duration;
}
function tick(elapsed) {
var t = elapsed / duration, e = ease(t), n = tweens.length;
while (n > 0) {
tweens[--n].call(node, e);
}
if (t >= 1) {
transition.event && transition.event.end.call(node, node.__data__, i);
if (--lock.count) delete lock[id]; else delete node[ns];
return 1;
}
}
if (!transition) {
time = inherit.time;
timer = d3_timer(schedule, 0, time);
transition = lock[id] = {
tween: new d3_Map(),
time: time,
timer: timer,
delay: inherit.delay,
duration: inherit.duration,
ease: inherit.ease,
index: i
};
inherit = null;
++lock.count;
}
}
d3.svg.axis = function() {
var scale = d3.scale.linear(), orient = d3_svg_axisDefaultOrient, innerTickSize = 6, outerTickSize = 6, tickPadding = 3, tickArguments_ = [ 10 ], tickValues = null, tickFormat_;
function axis(g) {
g.each(function() {
var g = d3.select(this);
var scale0 = this.__chart__ || scale, scale1 = this.__chart__ = scale.copy();
var ticks = tickValues == null ? scale1.ticks ? scale1.ticks.apply(scale1, tickArguments_) : scale1.domain() : tickValues, tickFormat = tickFormat_ == null ? scale1.tickFormat ? scale1.tickFormat.apply(scale1, tickArguments_) : d3_identity : tickFormat_, tick = g.selectAll(".tick").data(ticks, scale1), tickEnter = tick.enter().insert("g", ".domain").attr("class", "tick").style("opacity", ε), tickExit = d3.transition(tick.exit()).style("opacity", ε).remove(), tickUpdate = d3.transition(tick.order()).style("opacity", 1), tickSpacing = Math.max(innerTickSize, 0) + tickPadding, tickTransform;
var range = d3_scaleRange(scale1), path = g.selectAll(".domain").data([ 0 ]), pathUpdate = (path.enter().append("path").attr("class", "domain"),
d3.transition(path));
tickEnter.append("line");
tickEnter.append("text");
var lineEnter = tickEnter.select("line"), lineUpdate = tickUpdate.select("line"), text = tick.select("text").text(tickFormat), textEnter = tickEnter.select("text"), textUpdate = tickUpdate.select("text"), sign = orient === "top" || orient === "left" ? -1 : 1, x1, x2, y1, y2;
if (orient === "bottom" || orient === "top") {
tickTransform = d3_svg_axisX, x1 = "x", y1 = "y", x2 = "x2", y2 = "y2";
text.attr("dy", sign < 0 ? "0em" : ".71em").style("text-anchor", "middle");
pathUpdate.attr("d", "M" + range[0] + "," + sign * outerTickSize + "V0H" + range[1] + "V" + sign * outerTickSize);
} else {
tickTransform = d3_svg_axisY, x1 = "y", y1 = "x", x2 = "y2", y2 = "x2";
text.attr("dy", ".32em").style("text-anchor", sign < 0 ? "end" : "start");
pathUpdate.attr("d", "M" + sign * outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + sign * outerTickSize);
}
lineEnter.attr(y2, sign * innerTickSize);
textEnter.attr(y1, sign * tickSpacing);
lineUpdate.attr(x2, 0).attr(y2, sign * innerTickSize);
textUpdate.attr(x1, 0).attr(y1, sign * tickSpacing);
if (scale1.rangeBand) {
var x = scale1, dx = x.rangeBand() / 2;
scale0 = scale1 = function(d) {
return x(d) + dx;
};
} else if (scale0.rangeBand) {
scale0 = scale1;
} else {
tickExit.call(tickTransform, scale1, scale0);
}
tickEnter.call(tickTransform, scale0, scale1);
tickUpdate.call(tickTransform, scale1, scale1);
});
}
axis.scale = function(x) {
if (!arguments.length) return scale;
scale = x;
return axis;
};
axis.orient = function(x) {
if (!arguments.length) return orient;
orient = x in d3_svg_axisOrients ? x + "" : d3_svg_axisDefaultOrient;
return axis;
};
axis.ticks = function() {
if (!arguments.length) return tickArguments_;
tickArguments_ = d3_array(arguments);
return axis;
};
axis.tickValues = function(x) {
if (!arguments.length) return tickValues;
tickValues = x;
return axis;
};
axis.tickFormat = function(x) {
if (!arguments.length) return tickFormat_;
tickFormat_ = x;
return axis;
};
axis.tickSize = function(x) {
var n = arguments.length;
if (!n) return innerTickSize;
innerTickSize = +x;
outerTickSize = +arguments[n - 1];
return axis;
};
axis.innerTickSize = function(x) {
if (!arguments.length) return innerTickSize;
innerTickSize = +x;
return axis;
};
axis.outerTickSize = function(x) {
if (!arguments.length) return outerTickSize;
outerTickSize = +x;
return axis;
};
axis.tickPadding = function(x) {
if (!arguments.length) return tickPadding;
tickPadding = +x;
return axis;
};
axis.tickSubdivide = function() {
return arguments.length && axis;
};
return axis;
};
var d3_svg_axisDefaultOrient = "bottom", d3_svg_axisOrients = {
top: 1,
right: 1,
bottom: 1,
left: 1
};
function d3_svg_axisX(selection, x0, x1) {
selection.attr("transform", function(d) {
var v0 = x0(d);
return "translate(" + (isFinite(v0) ? v0 : x1(d)) + ",0)";
});
}
function d3_svg_axisY(selection, y0, y1) {
selection.attr("transform", function(d) {
var v0 = y0(d);
return "translate(0," + (isFinite(v0) ? v0 : y1(d)) + ")";
});
}
d3.svg.brush = function() {
var event = d3_eventDispatch(brush, "brushstart", "brush", "brushend"), x = null, y = null, xExtent = [ 0, 0 ], yExtent = [ 0, 0 ], xExtentDomain, yExtentDomain, xClamp = true, yClamp = true, resizes = d3_svg_brushResizes[0];
function brush(g) {
g.each(function() {
var g = d3.select(this).style("pointer-events", "all").style("-webkit-tap-highlight-color", "rgba(0,0,0,0)").on("mousedown.brush", brushstart).on("touchstart.brush", brushstart);
var background = g.selectAll(".background").data([ 0 ]);
background.enter().append("rect").attr("class", "background").style("visibility", "hidden").style("cursor", "crosshair");
g.selectAll(".extent").data([ 0 ]).enter().append("rect").attr("class", "extent").style("cursor", "move");
var resize = g.selectAll(".resize").data(resizes, d3_identity);
resize.exit().remove();
resize.enter().append("g").attr("class", function(d) {
return "resize " + d;
}).style("cursor", function(d) {
return d3_svg_brushCursor[d];
}).append("rect").attr("x", function(d) {
return /[ew]$/.test(d) ? -3 : null;
}).attr("y", function(d) {
return /^[ns]/.test(d) ? -3 : null;
}).attr("width", 6).attr("height", 6).style("visibility", "hidden");
resize.style("display", brush.empty() ? "none" : null);
var gUpdate = d3.transition(g), backgroundUpdate = d3.transition(background), range;
if (x) {
range = d3_scaleRange(x);
backgroundUpdate.attr("x", range[0]).attr("width", range[1] - range[0]);
redrawX(gUpdate);
}
if (y) {
range = d3_scaleRange(y);
backgroundUpdate.attr("y", range[0]).attr("height", range[1] - range[0]);
redrawY(gUpdate);
}
redraw(gUpdate);
});
}
brush.event = function(g) {
g.each(function() {
var event_ = event.of(this, arguments), extent1 = {
x: xExtent,
y: yExtent,
i: xExtentDomain,
j: yExtentDomain
}, extent0 = this.__chart__ || extent1;
this.__chart__ = extent1;
if (d3_transitionInheritId) {
d3.select(this).transition().each("start.brush", function() {
xExtentDomain = extent0.i;
yExtentDomain = extent0.j;
xExtent = extent0.x;
yExtent = extent0.y;
event_({
type: "brushstart"
});
}).tween("brush:brush", function() {
var xi = d3_interpolateArray(xExtent, extent1.x), yi = d3_interpolateArray(yExtent, extent1.y);
xExtentDomain = yExtentDomain = null;
return function(t) {
xExtent = extent1.x = xi(t);
yExtent = extent1.y = yi(t);
event_({
type: "brush",
mode: "resize"
});
};
}).each("end.brush", function() {
xExtentDomain = extent1.i;
yExtentDomain = extent1.j;
event_({
type: "brush",
mode: "resize"
});
event_({
type: "brushend"
});
});
} else {
event_({
type: "brushstart"
});
event_({
type: "brush",
mode: "resize"
});
event_({
type: "brushend"
});
}
});
};
function redraw(g) {
g.selectAll(".resize").attr("transform", function(d) {
return "translate(" + xExtent[+/e$/.test(d)] + "," + yExtent[+/^s/.test(d)] + ")";
});
}
function redrawX(g) {
g.select(".extent").attr("x", xExtent[0]);
g.selectAll(".extent,.n>rect,.s>rect").attr("width", xExtent[1] - xExtent[0]);
}
function redrawY(g) {
g.select(".extent").attr("y", yExtent[0]);
g.selectAll(".extent,.e>rect,.w>rect").attr("height", yExtent[1] - yExtent[0]);
}
function brushstart() {
var target = this, eventTarget = d3.select(d3.event.target), event_ = event.of(target, arguments), g = d3.select(target), resizing = eventTarget.datum(), resizingX = !/^(n|s)$/.test(resizing) && x, resizingY = !/^(e|w)$/.test(resizing) && y, dragging = eventTarget.classed("extent"), dragRestore = d3_event_dragSuppress(target), center, origin = d3.mouse(target), offset;
var w = d3.select(d3_window(target)).on("keydown.brush", keydown).on("keyup.brush", keyup);
if (d3.event.changedTouches) {
w.on("touchmove.brush", brushmove).on("touchend.brush", brushend);
} else {
w.on("mousemove.brush", brushmove).on("mouseup.brush", brushend);
}
g.interrupt().selectAll("*").interrupt();
if (dragging) {
origin[0] = xExtent[0] - origin[0];
origin[1] = yExtent[0] - origin[1];
} else if (resizing) {
var ex = +/w$/.test(resizing), ey = +/^n/.test(resizing);
offset = [ xExtent[1 - ex] - origin[0], yExtent[1 - ey] - origin[1] ];
origin[0] = xExtent[ex];
origin[1] = yExtent[ey];
} else if (d3.event.altKey) center = origin.slice();
g.style("pointer-events", "none").selectAll(".resize").style("display", null);
d3.select("body").style("cursor", eventTarget.style("cursor"));
event_({
type: "brushstart"
});
brushmove();
function keydown() {
if (d3.event.keyCode == 32) {
if (!dragging) {
center = null;
origin[0] -= xExtent[1];
origin[1] -= yExtent[1];
dragging = 2;
}
d3_eventPreventDefault();
}
}
function keyup() {
if (d3.event.keyCode == 32 && dragging == 2) {
origin[0] += xExtent[1];
origin[1] += yExtent[1];
dragging = 0;
d3_eventPreventDefault();
}
}
function brushmove() {
var point = d3.mouse(target), moved = false;
if (offset) {
point[0] += offset[0];
point[1] += offset[1];
}
if (!dragging) {
if (d3.event.altKey) {
if (!center) center = [ (xExtent[0] + xExtent[1]) / 2, (yExtent[0] + yExtent[1]) / 2 ];
origin[0] = xExtent[+(point[0] < center[0])];
origin[1] = yExtent[+(point[1] < center[1])];
} else center = null;
}
if (resizingX && move1(point, x, 0)) {
redrawX(g);
moved = true;
}
if (resizingY && move1(point, y, 1)) {
redrawY(g);
moved = true;
}
if (moved) {
redraw(g);
event_({
type: "brush",
mode: dragging ? "move" : "resize"
});
}
}
function move1(point, scale, i) {
var range = d3_scaleRange(scale), r0 = range[0], r1 = range[1], position = origin[i], extent = i ? yExtent : xExtent, size = extent[1] - extent[0], min, max;
if (dragging) {
r0 -= position;
r1 -= size + position;
}
min = (i ? yClamp : xClamp) ? Math.max(r0, Math.min(r1, point[i])) : point[i];
if (dragging) {
max = (min += position) + size;
} else {
if (center) position = Math.max(r0, Math.min(r1, 2 * center[i] - min));
if (position < min) {
max = min;
min = position;
} else {
max = position;
}
}
if (extent[0] != min || extent[1] != max) {
if (i) yExtentDomain = null; else xExtentDomain = null;
extent[0] = min;
extent[1] = max;
return true;
}
}
function brushend() {
brushmove();
g.style("pointer-events", "all").selectAll(".resize").style("display", brush.empty() ? "none" : null);
d3.select("body").style("cursor", null);
w.on("mousemove.brush", null).on("mouseup.brush", null).on("touchmove.brush", null).on("touchend.brush", null).on("keydown.brush", null).on("keyup.brush", null);
dragRestore();
event_({
type: "brushend"
});
}
}
brush.x = function(z) {
if (!arguments.length) return x;
x = z;
resizes = d3_svg_brushResizes[!x << 1 | !y];
return brush;
};
brush.y = function(z) {
if (!arguments.length) return y;
y = z;
resizes = d3_svg_brushResizes[!x << 1 | !y];
return brush;
};
brush.clamp = function(z) {
if (!arguments.length) return x && y ? [ xClamp, yClamp ] : x ? xClamp : y ? yClamp : null;
if (x && y) xClamp = !!z[0], yClamp = !!z[1]; else if (x) xClamp = !!z; else if (y) yClamp = !!z;
return brush;
};
brush.extent = function(z) {
var x0, x1, y0, y1, t;
if (!arguments.length) {
if (x) {
if (xExtentDomain) {
x0 = xExtentDomain[0], x1 = xExtentDomain[1];
} else {
x0 = xExtent[0], x1 = xExtent[1];
if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
if (x1 < x0) t = x0, x0 = x1, x1 = t;
}
}
if (y) {
if (yExtentDomain) {
y0 = yExtentDomain[0], y1 = yExtentDomain[1];
} else {
y0 = yExtent[0], y1 = yExtent[1];
if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
if (y1 < y0) t = y0, y0 = y1, y1 = t;
}
}
return x && y ? [ [ x0, y0 ], [ x1, y1 ] ] : x ? [ x0, x1 ] : y && [ y0, y1 ];
}
if (x) {
x0 = z[0], x1 = z[1];
if (y) x0 = x0[0], x1 = x1[0];
xExtentDomain = [ x0, x1 ];
if (x.invert) x0 = x(x0), x1 = x(x1);
if (x1 < x0) t = x0, x0 = x1, x1 = t;
if (x0 != xExtent[0] || x1 != xExtent[1]) xExtent = [ x0, x1 ];
}
if (y) {
y0 = z[0], y1 = z[1];
if (x) y0 = y0[1], y1 = y1[1];
yExtentDomain = [ y0, y1 ];
if (y.invert) y0 = y(y0), y1 = y(y1);
if (y1 < y0) t = y0, y0 = y1, y1 = t;
if (y0 != yExtent[0] || y1 != yExtent[1]) yExtent = [ y0, y1 ];
}
return brush;
};
brush.clear = function() {
if (!brush.empty()) {
xExtent = [ 0, 0 ], yExtent = [ 0, 0 ];
xExtentDomain = yExtentDomain = null;
}
return brush;
};
brush.empty = function() {
return !!x && xExtent[0] == xExtent[1] || !!y && yExtent[0] == yExtent[1];
};
return d3.rebind(brush, event, "on");
};
var d3_svg_brushCursor = {
n: "ns-resize",
e: "ew-resize",
s: "ns-resize",
w: "ew-resize",
nw: "nwse-resize",
ne: "nesw-resize",
se: "nwse-resize",
sw: "nesw-resize"
};
var d3_svg_brushResizes = [ [ "n", "e", "s", "w", "nw", "ne", "se", "sw" ], [ "e", "w" ], [ "n", "s" ], [] ];
var d3_time_format = d3_time.format = d3_locale_enUS.timeFormat;
var d3_time_formatUtc = d3_time_format.utc;
var d3_time_formatIso = d3_time_formatUtc("%Y-%m-%dT%H:%M:%S.%LZ");
d3_time_format.iso = Date.prototype.toISOString && +new Date("2000-01-01T00:00:00.000Z") ? d3_time_formatIsoNative : d3_time_formatIso;
function d3_time_formatIsoNative(date) {
return date.toISOString();
}
d3_time_formatIsoNative.parse = function(string) {
var date = new Date(string);
return isNaN(date) ? null : date;
};
d3_time_formatIsoNative.toString = d3_time_formatIso.toString;
d3_time.second = d3_time_interval(function(date) {
return new d3_date(Math.floor(date / 1e3) * 1e3);
}, function(date, offset) {
date.setTime(date.getTime() + Math.floor(offset) * 1e3);
}, function(date) {
return date.getSeconds();
});
d3_time.seconds = d3_time.second.range;
d3_time.seconds.utc = d3_time.second.utc.range;
d3_time.minute = d3_time_interval(function(date) {
return new d3_date(Math.floor(date / 6e4) * 6e4);
}, function(date, offset) {
date.setTime(date.getTime() + Math.floor(offset) * 6e4);
}, function(date) {
return date.getMinutes();
});
d3_time.minutes = d3_time.minute.range;
d3_time.minutes.utc = d3_time.minute.utc.range;
d3_time.hour = d3_time_interval(function(date) {
var timezone = date.getTimezoneOffset() / 60;
return new d3_date((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
}, function(date, offset) {
date.setTime(date.getTime() + Math.floor(offset) * 36e5);
}, function(date) {
return date.getHours();
});
d3_time.hours = d3_time.hour.range;
d3_time.hours.utc = d3_time.hour.utc.range;
d3_time.month = d3_time_interval(function(date) {
date = d3_time.day(date);
date.setDate(1);
return date;
}, function(date, offset) {
date.setMonth(date.getMonth() + offset);
}, function(date) {
return date.getMonth();
});
d3_time.months = d3_time.month.range;
d3_time.months.utc = d3_time.month.utc.range;
function d3_time_scale(linear, methods, format) {
function scale(x) {
return linear(x);
}
scale.invert = function(x) {
return d3_time_scaleDate(linear.invert(x));
};
scale.domain = function(x) {
if (!arguments.length) return linear.domain().map(d3_time_scaleDate);
linear.domain(x);
return scale;
};
function tickMethod(extent, count) {
var span = extent[1] - extent[0], target = span / count, i = d3.bisect(d3_time_scaleSteps, target);
return i == d3_time_scaleSteps.length ? [ methods.year, d3_scale_linearTickRange(extent.map(function(d) {
return d / 31536e6;
}), count)[2] ] : !i ? [ d3_time_scaleMilliseconds, d3_scale_linearTickRange(extent, count)[2] ] : methods[target / d3_time_scaleSteps[i - 1] < d3_time_scaleSteps[i] / target ? i - 1 : i];
}
scale.nice = function(interval, skip) {
var domain = scale.domain(), extent = d3_scaleExtent(domain), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" && tickMethod(extent, interval);
if (method) interval = method[0], skip = method[1];
function skipped(date) {
return !isNaN(date) && !interval.range(date, d3_time_scaleDate(+date + 1), skip).length;
}
return scale.domain(d3_scale_nice(domain, skip > 1 ? {
floor: function(date) {
while (skipped(date = interval.floor(date))) date = d3_time_scaleDate(date - 1);
return date;
},
ceil: function(date) {
while (skipped(date = interval.ceil(date))) date = d3_time_scaleDate(+date + 1);
return date;
}
} : interval));
};
scale.ticks = function(interval, skip) {
var extent = d3_scaleExtent(scale.domain()), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" ? tickMethod(extent, interval) : !interval.range && [ {
range: interval
}, skip ];
if (method) interval = method[0], skip = method[1];
return interval.range(extent[0], d3_time_scaleDate(+extent[1] + 1), skip < 1 ? 1 : skip);
};
scale.tickFormat = function() {
return format;
};
scale.copy = function() {
return d3_time_scale(linear.copy(), methods, format);
};
return d3_scale_linearRebind(scale, linear);
}
function d3_time_scaleDate(t) {
return new Date(t);
}
var d3_time_scaleSteps = [ 1e3, 5e3, 15e3, 3e4, 6e4, 3e5, 9e5, 18e5, 36e5, 108e5, 216e5, 432e5, 864e5, 1728e5, 6048e5, 2592e6, 7776e6, 31536e6 ];
var d3_time_scaleLocalMethods = [ [ d3_time.second, 1 ], [ d3_time.second, 5 ], [ d3_time.second, 15 ], [ d3_time.second, 30 ], [ d3_time.minute, 1 ], [ d3_time.minute, 5 ], [ d3_time.minute, 15 ], [ d3_time.minute, 30 ], [ d3_time.hour, 1 ], [ d3_time.hour, 3 ], [ d3_time.hour, 6 ], [ d3_time.hour, 12 ], [ d3_time.day, 1 ], [ d3_time.day, 2 ], [ d3_time.week, 1 ], [ d3_time.month, 1 ], [ d3_time.month, 3 ], [ d3_time.year, 1 ] ];
var d3_time_scaleLocalFormat = d3_time_format.multi([ [ ".%L", function(d) {
return d.getMilliseconds();
} ], [ ":%S", function(d) {
return d.getSeconds();
} ], [ "%I:%M", function(d) {
return d.getMinutes();
} ], [ "%I %p", function(d) {
return d.getHours();
} ], [ "%a %d", function(d) {
return d.getDay() && d.getDate() != 1;
} ], [ "%b %d", function(d) {
return d.getDate() != 1;
} ], [ "%B", function(d) {
return d.getMonth();
} ], [ "%Y", d3_true ] ]);
var d3_time_scaleMilliseconds = {
range: function(start, stop, step) {
return d3.range(Math.ceil(start / step) * step, +stop, step).map(d3_time_scaleDate);
},
floor: d3_identity,
ceil: d3_identity
};
d3_time_scaleLocalMethods.year = d3_time.year;
d3_time.scale = function() {
return d3_time_scale(d3.scale.linear(), d3_time_scaleLocalMethods, d3_time_scaleLocalFormat);
};
var d3_time_scaleUtcMethods = d3_time_scaleLocalMethods.map(function(m) {
return [ m[0].utc, m[1] ];
});
var d3_time_scaleUtcFormat = d3_time_formatUtc.multi([ [ ".%L", function(d) {
return d.getUTCMilliseconds();
} ], [ ":%S", function(d) {
return d.getUTCSeconds();
} ], [ "%I:%M", function(d) {
return d.getUTCMinutes();
} ], [ "%I %p", function(d) {
return d.getUTCHours();
} ], [ "%a %d", function(d) {
return d.getUTCDay() && d.getUTCDate() != 1;
} ], [ "%b %d", function(d) {
return d.getUTCDate() != 1;
} ], [ "%B", function(d) {
return d.getUTCMonth();
} ], [ "%Y", d3_true ] ]);
d3_time_scaleUtcMethods.year = d3_time.year.utc;
d3_time.scale.utc = function() {
return d3_time_scale(d3.scale.linear(), d3_time_scaleUtcMethods, d3_time_scaleUtcFormat);
};
d3.text = d3_xhrType(function(request) {
return request.responseText;
});
d3.json = function(url, callback) {
return d3_xhr(url, "application/json", d3_json, callback);
};
function d3_json(request) {
return JSON.parse(request.responseText);
}
d3.html = function(url, callback) {
return d3_xhr(url, "text/html", d3_html, callback);
};
function d3_html(request) {
var range = d3_document.createRange();
range.selectNode(d3_document.body);
return range.createContextualFragment(request.responseText);
}
d3.xml = d3_xhrType(function(request) {
return request.responseXML;
});
if (true) this.d3 = d3, !(__WEBPACK_AMD_DEFINE_FACTORY__ = (d3), __WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ? (__WEBPACK_AMD_DEFINE_FACTORY__.call(exports, __webpack_require__, exports, module)) : __WEBPACK_AMD_DEFINE_FACTORY__), __WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__)); else if (typeof module === "object" && module.exports) module.exports = d3; else this.d3 = d3;
}();
/***/ }),
/* 3 */
/***/ (function(module, exports, __webpack_require__) {
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _d = __webpack_require__(2);
var _d2 = _interopRequireDefault(_d);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var Barchart =
// svg: d3 object with the svg in question
// exp_array: list of (feature_name, weight)
function Barchart(svg, exp_array) {
var two_sided = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;
var titles = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : undefined;
var colors = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : ['red', 'green'];
var show_numbers = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : false;
var bar_height = arguments.length > 6 && arguments[6] !== undefined ? arguments[6] : 5;
_classCallCheck(this, Barchart);
var svg_width = Math.min(600, parseInt(svg.style('width')));
var bar_width = two_sided ? svg_width / 2 : svg_width;
if (titles === undefined) {
titles = two_sided ? ['Cons', 'Pros'] : 'Pros';
}
if (show_numbers) {
bar_width = bar_width - 30;
}
var x_offset = two_sided ? svg_width / 2 : 10;
// 13.1 is +- the width of W, the widest letter.
if (two_sided && titles.length == 2) {
svg.append('text').attr('x', svg_width / 4).attr('y', 15).attr('font-size', '20').attr('text-anchor', 'middle').style('fill', colors[0]).text(titles[0]);
svg.append('text').attr('x', svg_width / 4 * 3).attr('y', 15).attr('font-size', '20').attr('text-anchor', 'middle').style('fill', colors[1]).text(titles[1]);
} else {
var pos = two_sided ? svg_width / 2 : x_offset;
var anchor = two_sided ? 'middle' : 'begin';
svg.append('text').attr('x', pos).attr('y', 15).attr('font-size', '20').attr('text-anchor', anchor).text(titles);
}
var yshift = 20;
var space_between_bars = 0;
var text_height = 16;
var space_between_bar_and_text = 3;
var total_bar_height = text_height + space_between_bar_and_text + bar_height + space_between_bars;
var total_height = total_bar_height * exp_array.length;
this.svg_height = total_height + yshift;
var yscale = _d2.default.scale.linear().domain([0, exp_array.length]).range([yshift, yshift + total_height]);
var names = exp_array.map(function (v) {
return v[0];
});
var weights = exp_array.map(function (v) {
return v[1];
});
var max_weight = Math.max.apply(Math, _toConsumableArray(weights.map(function (v) {
return Math.abs(v);
})));
var xscale = _d2.default.scale.linear().domain([0, Math.max(1, max_weight)]).range([0, bar_width]);
for (var i = 0; i < exp_array.length; ++i) {
var name = names[i];
var weight = weights[i];
var size = xscale(Math.abs(weight));
var to_the_right = weight > 0 || !two_sided;
var text = svg.append('text').attr('x', to_the_right ? x_offset + 2 : x_offset - 2).attr('y', yscale(i) + text_height).attr('text-anchor', to_the_right ? 'begin' : 'end').attr('font-size', '14').text(name);
while (text.node().getBBox()['width'] + 1 > bar_width) {
var cur_text = text.text().slice(0, text.text().length - 5);
text.text(cur_text + '...');
if (text === '...') {
break;
}
}
var bar = svg.append('rect').attr('height', bar_height).attr('x', to_the_right ? x_offset : x_offset - size).attr('y', text_height + yscale(i) + space_between_bar_and_text) // + bar_height)
.attr('width', size).style('fill', weight > 0 ? colors[1] : colors[0]);
if (show_numbers) {
var bartext = svg.append('text').attr('x', to_the_right ? x_offset + size + 1 : x_offset - size - 1).attr('text-anchor', weight > 0 || !two_sided ? 'begin' : 'end').attr('y', bar_height + yscale(i) + text_height + space_between_bar_and_text).attr('font-size', '10').text(Math.abs(weight).toFixed(2));
}
}
var line = svg.append("line").attr("x1", x_offset).attr("x2", x_offset).attr("y1", bar_height + yshift).attr("y2", Math.max(bar_height, yscale(exp_array.length))).style("stroke-width", 2).style("stroke", "black");
};
exports.default = Barchart;
/***/ }),
/* 4 */
/***/ (function(module, exports, __webpack_require__) {
var __WEBPACK_AMD_DEFINE_RESULT__;/* WEBPACK VAR INJECTION */(function(global, module) {/**
* @license
* Lodash
* Copyright JS Foundation and other contributors
* Released under MIT license
* Based on Underscore.js 1.8.3
* Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
*/
;(function() {
/** Used as a safe reference for `undefined` in pre-ES5 environments. */
var undefined;
/** Used as the semantic version number. */
var VERSION = '4.17.11';
/** Used as the size to enable large array optimizations. */
var LARGE_ARRAY_SIZE = 200;
/** Error message constants. */
var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',
FUNC_ERROR_TEXT = 'Expected a function';
/** Used to stand-in for `undefined` hash values. */
var HASH_UNDEFINED = '__lodash_hash_undefined__';
/** Used as the maximum memoize cache size. */
var MAX_MEMOIZE_SIZE = 500;
/** Used as the internal argument placeholder. */
var PLACEHOLDER = '__lodash_placeholder__';
/** Used to compose bitmasks for cloning. */
var CLONE_DEEP_FLAG = 1,
CLONE_FLAT_FLAG = 2,
CLONE_SYMBOLS_FLAG = 4;
/** Used to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG = 1,
COMPARE_UNORDERED_FLAG = 2;
/** Used to compose bitmasks for function metadata. */
var WRAP_BIND_FLAG = 1,
WRAP_BIND_KEY_FLAG = 2,
WRAP_CURRY_BOUND_FLAG = 4,
WRAP_CURRY_FLAG = 8,
WRAP_CURRY_RIGHT_FLAG = 16,
WRAP_PARTIAL_FLAG = 32,
WRAP_PARTIAL_RIGHT_FLAG = 64,
WRAP_ARY_FLAG = 128,
WRAP_REARG_FLAG = 256,
WRAP_FLIP_FLAG = 512;
/** Used as default options for `_.truncate`. */
var DEFAULT_TRUNC_LENGTH = 30,
DEFAULT_TRUNC_OMISSION = '...';
/** Used to detect hot functions by number of calls within a span of milliseconds. */
var HOT_COUNT = 800,
HOT_SPAN = 16;
/** Used to indicate the type of lazy iteratees. */
var LAZY_FILTER_FLAG = 1,
LAZY_MAP_FLAG = 2,
LAZY_WHILE_FLAG = 3;
/** Used as references for various `Number` constants. */
var INFINITY = 1 / 0,
MAX_SAFE_INTEGER = 9007199254740991,
MAX_INTEGER = 1.7976931348623157e+308,
NAN = 0 / 0;
/** Used as references for the maximum length and index of an array. */
var MAX_ARRAY_LENGTH = 4294967295,
MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,
HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;
/** Used to associate wrap methods with their bit flags. */
var wrapFlags = [
['ary', WRAP_ARY_FLAG],
['bind', WRAP_BIND_FLAG],
['bindKey', WRAP_BIND_KEY_FLAG],
['curry', WRAP_CURRY_FLAG],
['curryRight', WRAP_CURRY_RIGHT_FLAG],
['flip', WRAP_FLIP_FLAG],
['partial', WRAP_PARTIAL_FLAG],
['partialRight', WRAP_PARTIAL_RIGHT_FLAG],
['rearg', WRAP_REARG_FLAG]
];
/** `Object#toString` result references. */
var argsTag = '[object Arguments]',
arrayTag = '[object Array]',
asyncTag = '[object AsyncFunction]',
boolTag = '[object Boolean]',
dateTag = '[object Date]',
domExcTag = '[object DOMException]',
errorTag = '[object Error]',
funcTag = '[object Function]',
genTag = '[object GeneratorFunction]',
mapTag = '[object Map]',
numberTag = '[object Number]',
nullTag = '[object Null]',
objectTag = '[object Object]',
promiseTag = '[object Promise]',
proxyTag = '[object Proxy]',
regexpTag = '[object RegExp]',
setTag = '[object Set]',
stringTag = '[object String]',
symbolTag = '[object Symbol]',
undefinedTag = '[object Undefined]',
weakMapTag = '[object WeakMap]',
weakSetTag = '[object WeakSet]';
var arrayBufferTag = '[object ArrayBuffer]',
dataViewTag = '[object DataView]',
float32Tag = '[object Float32Array]',
float64Tag = '[object Float64Array]',
int8Tag = '[object Int8Array]',
int16Tag = '[object Int16Array]',
int32Tag = '[object Int32Array]',
uint8Tag = '[object Uint8Array]',
uint8ClampedTag = '[object Uint8ClampedArray]',
uint16Tag = '[object Uint16Array]',
uint32Tag = '[object Uint32Array]';
/** Used to match empty string literals in compiled template source. */
var reEmptyStringLeading = /\b__p \+= '';/g,
reEmptyStringMiddle = /\b(__p \+=) '' \+/g,
reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g;
/** Used to match HTML entities and HTML characters. */
var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,
reUnescapedHtml = /[&<>"']/g,
reHasEscapedHtml = RegExp(reEscapedHtml.source),
reHasUnescapedHtml = RegExp(reUnescapedHtml.source);
/** Used to match template delimiters. */
var reEscape = /<%-([\s\S]+?)%>/g,
reEvaluate = /<%([\s\S]+?)%>/g,
reInterpolate = /<%=([\s\S]+?)%>/g;
/** Used to match property names within property paths. */
var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/,
reIsPlainProp = /^\w*$/,
rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;
/**
* Used to match `RegExp`
* [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
*/
var reRegExpChar = /[\\^$.*+?()[\]{}|]/g,
reHasRegExpChar = RegExp(reRegExpChar.source);
/** Used to match leading and trailing whitespace. */
var reTrim = /^\s+|\s+$/g,
reTrimStart = /^\s+/,
reTrimEnd = /\s+$/;
/** Used to match wrap detail comments. */
var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/,
reWrapDetails = /\{\n\/\* \[wrapped with (.+)\] \*/,
reSplitDetails = /,? & /;
/** Used to match words composed of alphanumeric characters. */
var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g;
/** Used to match backslashes in property paths. */
var reEscapeChar = /\\(\\)?/g;
/**
* Used to match
* [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).
*/
var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;
/** Used to match `RegExp` flags from their coerced string values. */
var reFlags = /\w*$/;
/** Used to detect bad signed hexadecimal string values. */
var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;
/** Used to detect binary string values. */
var reIsBinary = /^0b[01]+$/i;
/** Used to detect host constructors (Safari). */
var reIsHostCtor = /^\[object .+?Constructor\]$/;
/** Used to detect octal string values. */
var reIsOctal = /^0o[0-7]+$/i;
/** Used to detect unsigned integer values. */
var reIsUint = /^(?:0|[1-9]\d*)$/;
/** Used to match Latin Unicode letters (excluding mathematical operators). */
var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g;
/** Used to ensure capturing order of template delimiters. */
var reNoMatch = /($^)/;
/** Used to match unescaped characters in compiled string literals. */
var reUnescapedString = /['\n\r\u2028\u2029\\]/g;
/** Used to compose unicode character classes. */
var rsAstralRange = '\\ud800-\\udfff',
rsComboMarksRange = '\\u0300-\\u036f',
reComboHalfMarksRange = '\\ufe20-\\ufe2f',
rsComboSymbolsRange = '\\u20d0-\\u20ff',
rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,
rsDingbatRange = '\\u2700-\\u27bf',
rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff',
rsMathOpRange = '\\xac\\xb1\\xd7\\xf7',
rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf',
rsPunctuationRange = '\\u2000-\\u206f',
rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000',
rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde',
rsVarRange = '\\ufe0e\\ufe0f',
rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;
/** Used to compose unicode capture groups. */
var rsApos = "['\u2019]",
rsAstral = '[' + rsAstralRange + ']',
rsBreak = '[' + rsBreakRange + ']',
rsCombo = '[' + rsComboRange + ']',
rsDigits = '\\d+',
rsDingbat = '[' + rsDingbatRange + ']',
rsLower = '[' + rsLowerRange + ']',
rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',
rsFitz = '\\ud83c[\\udffb-\\udfff]',
rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
rsNonAstral = '[^' + rsAstralRange + ']',
rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
rsUpper = '[' + rsUpperRange + ']',
rsZWJ = '\\u200d';
/** Used to compose unicode regexes. */
var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',
rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',
rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',
rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',
reOptMod = rsModifier + '?',
rsOptVar = '[' + rsVarRange + ']?',
rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
rsOrdLower = '\\d*(?:1st|2nd|3rd|(?![123])\\dth)(?=\\b|[A-Z_])',
rsOrdUpper = '\\d*(?:1ST|2ND|3RD|(?![123])\\dTH)(?=\\b|[a-z_])',
rsSeq = rsOptVar + reOptMod + rsOptJoin,
rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,
rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';
/** Used to match apostrophes. */
var reApos = RegExp(rsApos, 'g');
/**
* Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and
* [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).
*/
var reComboMark = RegExp(rsCombo, 'g');
/** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');
/** Used to match complex or compound words. */
var reUnicodeWord = RegExp([
rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',
rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',
rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,
rsUpper + '+' + rsOptContrUpper,
rsOrdUpper,
rsOrdLower,
rsDigits,
rsEmoji
].join('|'), 'g');
/** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */
var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']');
/** Used to detect strings that need a more robust regexp to match words. */
var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;
/** Used to assign default `context` object properties. */
var contextProps = [
'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array',
'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object',
'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array',
'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',
'_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'
];
/** Used to make template sourceURLs easier to identify. */
var templateCounter = -1;
/** Used to identify `toStringTag` values of typed arrays. */
var typedArrayTags = {};
typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
typedArrayTags[uint32Tag] = true;
typedArrayTags[argsTag] = typedArrayTags[arrayTag] =
typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =
typedArrayTags[errorTag] = typedArrayTags[funcTag] =
typedArrayTags[mapTag] = typedArrayTags[numberTag] =
typedArrayTags[objectTag] = typedArrayTags[regexpTag] =
typedArrayTags[setTag] = typedArrayTags[stringTag] =
typedArrayTags[weakMapTag] = false;
/** Used to identify `toStringTag` values supported by `_.clone`. */
var cloneableTags = {};
cloneableTags[argsTag] = cloneableTags[arrayTag] =
cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =
cloneableTags[boolTag] = cloneableTags[dateTag] =
cloneableTags[float32Tag] = cloneableTags[float64Tag] =
cloneableTags[int8Tag] = cloneableTags[int16Tag] =
cloneableTags[int32Tag] = cloneableTags[mapTag] =
cloneableTags[numberTag] = cloneableTags[objectTag] =
cloneableTags[regexpTag] = cloneableTags[setTag] =
cloneableTags[stringTag] = cloneableTags[symbolTag] =
cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =
cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;
cloneableTags[errorTag] = cloneableTags[funcTag] =
cloneableTags[weakMapTag] = false;
/** Used to map Latin Unicode letters to basic Latin letters. */
var deburredLetters = {
// Latin-1 Supplement block.
'\xc0': 'A', '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A',
'\xe0': 'a', '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a',
'\xc7': 'C', '\xe7': 'c',
'\xd0': 'D', '\xf0': 'd',
'\xc8': 'E', '\xc9': 'E', '\xca': 'E', '\xcb': 'E',
'\xe8': 'e', '\xe9': 'e', '\xea': 'e', '\xeb': 'e',
'\xcc': 'I', '\xcd': 'I', '\xce': 'I', '\xcf': 'I',
'\xec': 'i', '\xed': 'i', '\xee': 'i', '\xef': 'i',
'\xd1': 'N', '\xf1': 'n',
'\xd2': 'O', '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O',
'\xf2': 'o', '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o',
'\xd9': 'U', '\xda': 'U', '\xdb': 'U', '\xdc': 'U',
'\xf9': 'u', '\xfa': 'u', '\xfb': 'u', '\xfc': 'u',
'\xdd': 'Y', '\xfd': 'y', '\xff': 'y',
'\xc6': 'Ae', '\xe6': 'ae',
'\xde': 'Th', '\xfe': 'th',
'\xdf': 'ss',
// Latin Extended-A block.
'\u0100': 'A', '\u0102': 'A', '\u0104': 'A',
'\u0101': 'a', '\u0103': 'a', '\u0105': 'a',
'\u0106': 'C', '\u0108': 'C', '\u010a': 'C', '\u010c': 'C',
'\u0107': 'c', '\u0109': 'c', '\u010b': 'c', '\u010d': 'c',
'\u010e': 'D', '\u0110': 'D', '\u010f': 'd', '\u0111': 'd',
'\u0112': 'E', '\u0114': 'E', '\u0116': 'E', '\u0118': 'E', '\u011a': 'E',
'\u0113': 'e', '\u0115': 'e', '\u0117': 'e', '\u0119': 'e', '\u011b': 'e',
'\u011c': 'G', '\u011e': 'G', '\u0120': 'G', '\u0122': 'G',
'\u011d': 'g', '\u011f': 'g', '\u0121': 'g', '\u0123': 'g',
'\u0124': 'H', '\u0126': 'H', '\u0125': 'h', '\u0127': 'h',
'\u0128': 'I', '\u012a': 'I', '\u012c': 'I', '\u012e': 'I', '\u0130': 'I',
'\u0129': 'i', '\u012b': 'i', '\u012d': 'i', '\u012f': 'i', '\u0131': 'i',
'\u0134': 'J', '\u0135': 'j',
'\u0136': 'K', '\u0137': 'k', '\u0138': 'k',
'\u0139': 'L', '\u013b': 'L', '\u013d': 'L', '\u013f': 'L', '\u0141': 'L',
'\u013a': 'l', '\u013c': 'l', '\u013e': 'l', '\u0140': 'l', '\u0142': 'l',
'\u0143': 'N', '\u0145': 'N', '\u0147': 'N', '\u014a': 'N',
'\u0144': 'n', '\u0146': 'n', '\u0148': 'n', '\u014b': 'n',
'\u014c': 'O', '\u014e': 'O', '\u0150': 'O',
'\u014d': 'o', '\u014f': 'o', '\u0151': 'o',
'\u0154': 'R', '\u0156': 'R', '\u0158': 'R',
'\u0155': 'r', '\u0157': 'r', '\u0159': 'r',
'\u015a': 'S', '\u015c': 'S', '\u015e': 'S', '\u0160': 'S',
'\u015b': 's', '\u015d': 's', '\u015f': 's', '\u0161': 's',
'\u0162': 'T', '\u0164': 'T', '\u0166': 'T',
'\u0163': 't', '\u0165': 't', '\u0167': 't',
'\u0168': 'U', '\u016a': 'U', '\u016c': 'U', '\u016e': 'U', '\u0170': 'U', '\u0172': 'U',
'\u0169': 'u', '\u016b': 'u', '\u016d': 'u', '\u016f': 'u', '\u0171': 'u', '\u0173': 'u',
'\u0174': 'W', '\u0175': 'w',
'\u0176': 'Y', '\u0177': 'y', '\u0178': 'Y',
'\u0179': 'Z', '\u017b': 'Z', '\u017d': 'Z',
'\u017a': 'z', '\u017c': 'z', '\u017e': 'z',
'\u0132': 'IJ', '\u0133': 'ij',
'\u0152': 'Oe', '\u0153': 'oe',
'\u0149': "'n", '\u017f': 's'
};
/** Used to map characters to HTML entities. */
var htmlEscapes = {
'&': '&',
'<': '<',
'>': '>',
'"': '"',
"'": '''
};
/** Used to map HTML entities to characters. */
var htmlUnescapes = {
'&': '&',
'<': '<',
'>': '>',
'"': '"',
''': "'"
};
/** Used to escape characters for inclusion in compiled string literals. */
var stringEscapes = {
'\\': '\\',
"'": "'",
'\n': 'n',
'\r': 'r',
'\u2028': 'u2028',
'\u2029': 'u2029'
};
/** Built-in method references without a dependency on `root`. */
var freeParseFloat = parseFloat,
freeParseInt = parseInt;
/** Detect free variable `global` from Node.js. */
var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;
/** Detect free variable `self`. */
var freeSelf = typeof self == 'object' && self && self.Object === Object && self;
/** Used as a reference to the global object. */
var root = freeGlobal || freeSelf || Function('return this')();
/** Detect free variable `exports`. */
var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;
/** Detect free variable `module`. */
var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;
/** Detect the popular CommonJS extension `module.exports`. */
var moduleExports = freeModule && freeModule.exports === freeExports;
/** Detect free variable `process` from Node.js. */
var freeProcess = moduleExports && freeGlobal.process;
/** Used to access faster Node.js helpers. */
var nodeUtil = (function() {
try {
// Use `util.types` for Node.js 10+.
var types = freeModule && freeModule.require && freeModule.require('util').types;
if (types) {
return types;
}
// Legacy `process.binding('util')` for Node.js < 10.
return freeProcess && freeProcess.binding && freeProcess.binding('util');
} catch (e) {}
}());
/* Node.js helper references. */
var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,
nodeIsDate = nodeUtil && nodeUtil.isDate,
nodeIsMap = nodeUtil && nodeUtil.isMap,
nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,
nodeIsSet = nodeUtil && nodeUtil.isSet,
nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;
/*--------------------------------------------------------------------------*/
/**
* A faster alternative to `Function#apply`, this function invokes `func`
* with the `this` binding of `thisArg` and the arguments of `args`.
*
* @private
* @param {Function} func The function to invoke.
* @param {*} thisArg The `this` binding of `func`.
* @param {Array} args The arguments to invoke `func` with.
* @returns {*} Returns the result of `func`.
*/
function apply(func, thisArg, args) {
switch (args.length) {
case 0: return func.call(thisArg);
case 1: return func.call(thisArg, args[0]);
case 2: return func.call(thisArg, args[0], args[1]);
case 3: return func.call(thisArg, args[0], args[1], args[2]);
}
return func.apply(thisArg, args);
}
/**
* A specialized version of `baseAggregator` for arrays.
*
* @private
* @param {Array} [array] The array to iterate over.
* @param {Function} setter The function to set `accumulator` values.
* @param {Function} iteratee The iteratee to transform keys.
* @param {Object} accumulator The initial aggregated object.
* @returns {Function} Returns `accumulator`.
*/
function arrayAggregator(array, setter, iteratee, accumulator) {
var index = -1,
length = array == null ? 0 : array.length;
while (++index < length) {
var value = array[index];
setter(accumulator, value, iteratee(value), array);
}
return accumulator;
}
/**
* A specialized version of `_.forEach` for arrays without support for
* iteratee shorthands.
*
* @private
* @param {Array} [array] The array to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @returns {Array} Returns `array`.
*/
function arrayEach(array, iteratee) {
var index = -1,
length = array == null ? 0 : array.length;
while (++index < length) {
if (iteratee(array[index], index, array) === false) {
break;
}
}
return array;
}
/**
* A specialized version of `_.forEachRight` for arrays without support for
* iteratee shorthands.
*
* @private
* @param {Array} [array] The array to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @returns {Array} Returns `array`.
*/
function arrayEachRight(array, iteratee) {
var length = array == null ? 0 : array.length;
while (length--) {
if (iteratee(array[length], length, array) === false) {
break;
}
}
return array;
}
/**
* A specialized version of `_.every` for arrays without support for
* iteratee shorthands.
*
* @private
* @param {Array} [array] The array to iterate over.
* @param {Function} predicate The function invoked per iteration.
* @returns {boolean} Returns `true` if all elements pass the predicate check,
* else `false`.
*/
function arrayEvery(array, predicate) {
var index = -1,
length = array == null ? 0 : array.length;
while (++index < length) {
if (!predicate(array[index], index, array)) {
return false;
}
}
return true;
}
/**
* A specialized version of `_.filter` for arrays without support for
* iteratee shorthands.
*
* @private
* @param {Array} [array] The array to iterate over.
* @param {Function} predicate The function invoked per iteration.
* @returns {Array} Returns the new filtered array.
*/
function arrayFilter(array, predicate) {
var index = -1,
length = array == null ? 0 : array.length,
resIndex = 0,
result = [];
while (++index < length) {
var value = array[index];
if (predicate(value, index, array)) {
result[resIndex++] = value;
}
}
return result;
}
/**
* A specialized version of `_.includes` for arrays without support for
* specifying an index to search from.
*
* @private
* @param {Array} [array] The array to inspect.
* @param {*} target The value to search for.
* @returns {boolean} Returns `true` if `target` is found, else `false`.
*/
function arrayIncludes(array, value) {
var length = array == null ? 0 : array.length;
return !!length && baseIndexOf(array, value, 0) > -1;
}
/**
* This function is like `arrayIncludes` except that it accepts a comparator.
*
* @private
* @param {Array} [array] The array to inspect.
* @param {*} target The value to search for.
* @param {Function} comparator The comparator invoked per element.
* @returns {boolean} Returns `true` if `target` is found, else `false`.
*/
function arrayIncludesWith(array, value, comparator) {
var index = -1,
length = array == null ? 0 : array.length;
while (++index < length) {
if (comparator(value, array[index])) {
return true;
}
}
return false;
}
/**
* A specialized version of `_.map` for arrays without support for iteratee
* shorthands.
*
* @private
* @param {Array} [array] The array to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @returns {Array} Returns the new mapped array.
*/
function arrayMap(array, iteratee) {
var index = -1,
length = array == null ? 0 : array.length,
result = Array(length);
while (++index < length) {
result[index] = iteratee(array[index], index, array);
}
return result;
}
/**
* Appends the elements of `values` to `array`.
*
* @private
* @param {Array} array The array to modify.
* @param {Array} values The values to append.
* @returns {Array} Returns `array`.
*/
function arrayPush(array, values) {
var index = -1,
length = values.length,
offset = array.length;
while (++index < length) {
array[offset + index] = values[index];
}
return array;
}
/**
* A specialized version of `_.reduce` for arrays without support for
* iteratee shorthands.
*
* @private
* @param {Array} [array] The array to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @param {*} [accumulator] The initial value.
* @param {boolean} [initAccum] Specify using the first element of `array` as
* the initial value.
* @returns {*} Returns the accumulated value.
*/
function arrayReduce(array, iteratee, accumulator, initAccum) {
var index = -1,
length = array == null ? 0 : array.length;
if (initAccum && length) {
accumulator = array[++index];
}
while (++index < length) {
accumulator = iteratee(accumulator, array[index], index, array);
}
return accumulator;
}
/**
* A specialized version of `_.reduceRight` for arrays without support for
* iteratee shorthands.
*
* @private
* @param {Array} [array] The array to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @param {*} [accumulator] The initial value.
* @param {boolean} [initAccum] Specify using the last element of `array` as
* the initial value.
* @returns {*} Returns the accumulated value.
*/
function arrayReduceRight(array, iteratee, accumulator, initAccum) {
var length = array == null ? 0 : array.length;
if (initAccum && length) {
accumulator = array[--length];
}
while (length--) {
accumulator = iteratee(accumulator, array[length], length, array);
}
return accumulator;
}
/**
* A specialized version of `_.some` for arrays without support for iteratee
* shorthands.
*
* @private
* @param {Array} [array] The array to iterate over.
* @param {Function} predicate The function invoked per iteration.
* @returns {boolean} Returns `true` if any element passes the predicate check,
* else `false`.
*/
function arraySome(array, predicate) {
var index = -1,
length = array == null ? 0 : array.length;
while (++index < length) {
if (predicate(array[index], index, array)) {
return true;
}
}
return false;
}
/**
* Gets the size of an ASCII `string`.
*
* @private
* @param {string} string The string inspect.
* @returns {number} Returns the string size.
*/
var asciiSize = baseProperty('length');
/**
* Converts an ASCII `string` to an array.
*
* @private
* @param {string} string The string to convert.
* @returns {Array} Returns the converted array.
*/
function asciiToArray(string) {
return string.split('');
}
/**
* Splits an ASCII `string` into an array of its words.
*
* @private
* @param {string} The string to inspect.
* @returns {Array} Returns the words of `string`.
*/
function asciiWords(string) {
return string.match(reAsciiWord) || [];
}
/**
* The base implementation of methods like `_.findKey` and `_.findLastKey`,
* without support for iteratee shorthands, which iterates over `collection`
* using `eachFunc`.
*
* @private
* @param {Array|Object} collection The collection to inspect.
* @param {Function} predicate The function invoked per iteration.
* @param {Function} eachFunc The function to iterate over `collection`.
* @returns {*} Returns the found element or its key, else `undefined`.
*/
function baseFindKey(collection, predicate, eachFunc) {
var result;
eachFunc(collection, function(value, key, collection) {
if (predicate(value, key, collection)) {
result = key;
return false;
}
});
return result;
}
/**
* The base implementation of `_.findIndex` and `_.findLastIndex` without
* support for iteratee shorthands.
*
* @private
* @param {Array} array The array to inspect.
* @param {Function} predicate The function invoked per iteration.
* @param {number} fromIndex The index to search from.
* @param {boolean} [fromRight] Specify iterating from right to left.
* @returns {number} Returns the index of the matched value, else `-1`.
*/
function baseFindIndex(array, predicate, fromIndex, fromRight) {
var length = array.length,
index = fromIndex + (fromRight ? 1 : -1);
while ((fromRight ? index-- : ++index < length)) {
if (predicate(array[index], index, array)) {
return index;
}
}
return -1;
}
/**
* The base implementation of `_.indexOf` without `fromIndex` bounds checks.
*
* @private
* @param {Array} array The array to inspect.
* @param {*} value The value to search for.
* @param {number} fromIndex The index to search from.
* @returns {number} Returns the index of the matched value, else `-1`.
*/
function baseIndexOf(array, value, fromIndex) {
return value === value
? strictIndexOf(array, value, fromIndex)
: baseFindIndex(array, baseIsNaN, fromIndex);
}
/**
* This function is like `baseIndexOf` except that it accepts a comparator.
*
* @private
* @param {Array} array The array to inspect.
* @param {*} value The value to search for.
* @param {number} fromIndex The index to search from.
* @param {Function} comparator The comparator invoked per element.
* @returns {number} Returns the index of the matched value, else `-1`.
*/
function baseIndexOfWith(array, value, fromIndex, comparator) {
var index = fromIndex - 1,
length = array.length;
while (++index < length) {
if (comparator(array[index], value)) {
return index;
}
}
return -1;
}
/**
* The base implementation of `_.isNaN` without support for number objects.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
*/
function baseIsNaN(value) {
return value !== value;
}
/**
* The base implementation of `_.mean` and `_.meanBy` without support for
* iteratee shorthands.
*
* @private
* @param {Array} array The array to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @returns {number} Returns the mean.
*/
function baseMean(array, iteratee) {
var length = array == null ? 0 : array.length;
return length ? (baseSum(array, iteratee) / length) : NAN;
}
/**
* The base implementation of `_.property` without support for deep paths.
*
* @private
* @param {string} key The key of the property to get.
* @returns {Function} Returns the new accessor function.
*/
function baseProperty(key) {
return function(object) {
return object == null ? undefined : object[key];
};
}
/**
* The base implementation of `_.propertyOf` without support for deep paths.
*
* @private
* @param {Object} object The object to query.
* @returns {Function} Returns the new accessor function.
*/
function basePropertyOf(object) {
return function(key) {
return object == null ? undefined : object[key];
};
}
/**
* The base implementation of `_.reduce` and `_.reduceRight`, without support
* for iteratee shorthands, which iterates over `collection` using `eachFunc`.
*
* @private
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @param {*} accumulator The initial value.
* @param {boolean} initAccum Specify using the first or last element of
* `collection` as the initial value.
* @param {Function} eachFunc The function to iterate over `collection`.
* @returns {*} Returns the accumulated value.
*/
function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {
eachFunc(collection, function(value, index, collection) {
accumulator = initAccum
? (initAccum = false, value)
: iteratee(accumulator, value, index, collection);
});
return accumulator;
}
/**
* The base implementation of `_.sortBy` which uses `comparer` to define the
* sort order of `array` and replaces criteria objects with their corresponding
* values.
*
* @private
* @param {Array} array The array to sort.
* @param {Function} comparer The function to define sort order.
* @returns {Array} Returns `array`.
*/
function baseSortBy(array, comparer) {
var length = array.length;
array.sort(comparer);
while (length--) {
array[length] = array[length].value;
}
return array;
}
/**
* The base implementation of `_.sum` and `_.sumBy` without support for
* iteratee shorthands.
*
* @private
* @param {Array} array The array to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @returns {number} Returns the sum.
*/
function baseSum(array, iteratee) {
var result,
index = -1,
length = array.length;
while (++index < length) {
var current = iteratee(array[index]);
if (current !== undefined) {
result = result === undefined ? current : (result + current);
}
}
return result;
}
/**
* The base implementation of `_.times` without support for iteratee shorthands
* or max array length checks.
*
* @private
* @param {number} n The number of times to invoke `iteratee`.
* @param {Function} iteratee The function invoked per iteration.
* @returns {Array} Returns the array of results.
*/
function baseTimes(n, iteratee) {
var index = -1,
result = Array(n);
while (++index < n) {
result[index] = iteratee(index);
}
return result;
}
/**
* The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array
* of key-value pairs for `object` corresponding to the property names of `props`.
*
* @private
* @param {Object} object The object to query.
* @param {Array} props The property names to get values for.
* @returns {Object} Returns the key-value pairs.
*/
function baseToPairs(object, props) {
return arrayMap(props, function(key) {
return [key, object[key]];
});
}
/**
* The base implementation of `_.unary` without support for storing metadata.
*
* @private
* @param {Function} func The function to cap arguments for.
* @returns {Function} Returns the new capped function.
*/
function baseUnary(func) {
return function(value) {
return func(value);
};
}
/**
* The base implementation of `_.values` and `_.valuesIn` which creates an
* array of `object` property values corresponding to the property names
* of `props`.
*
* @private
* @param {Object} object The object to query.
* @param {Array} props The property names to get values for.
* @returns {Object} Returns the array of property values.
*/
function baseValues(object, props) {
return arrayMap(props, function(key) {
return object[key];
});
}
/**
* Checks if a `cache` value for `key` exists.
*
* @private
* @param {Object} cache The cache to query.
* @param {string} key The key of the entry to check.
* @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
*/
function cacheHas(cache, key) {
return cache.has(key);
}
/**
* Used by `_.trim` and `_.trimStart` to get the index of the first string symbol
* that is not found in the character symbols.
*
* @private
* @param {Array} strSymbols The string symbols to inspect.
* @param {Array} chrSymbols The character symbols to find.
* @returns {number} Returns the index of the first unmatched string symbol.
*/
function charsStartIndex(strSymbols, chrSymbols) {
var index = -1,
length = strSymbols.length;
while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
return index;
}
/**
* Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol
* that is not found in the character symbols.
*
* @private
* @param {Array} strSymbols The string symbols to inspect.
* @param {Array} chrSymbols The character symbols to find.
* @returns {number} Returns the index of the last unmatched string symbol.
*/
function charsEndIndex(strSymbols, chrSymbols) {
var index = strSymbols.length;
while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
return index;
}
/**
* Gets the number of `placeholder` occurrences in `array`.
*
* @private
* @param {Array} array The array to inspect.
* @param {*} placeholder The placeholder to search for.
* @returns {number} Returns the placeholder count.
*/
function countHolders(array, placeholder) {
var length = array.length,
result = 0;
while (length--) {
if (array[length] === placeholder) {
++result;
}
}
return result;
}
/**
* Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A
* letters to basic Latin letters.
*
* @private
* @param {string} letter The matched letter to deburr.
* @returns {string} Returns the deburred letter.
*/
var deburrLetter = basePropertyOf(deburredLetters);
/**
* Used by `_.escape` to convert characters to HTML entities.
*
* @private
* @param {string} chr The matched character to escape.
* @returns {string} Returns the escaped character.
*/
var escapeHtmlChar = basePropertyOf(htmlEscapes);
/**
* Used by `_.template` to escape characters for inclusion in compiled string literals.
*
* @private
* @param {string} chr The matched character to escape.
* @returns {string} Returns the escaped character.
*/
function escapeStringChar(chr) {
return '\\' + stringEscapes[chr];
}
/**
* Gets the value at `key` of `object`.
*
* @private
* @param {Object} [object] The object to query.
* @param {string} key The key of the property to get.
* @returns {*} Returns the property value.
*/
function getValue(object, key) {
return object == null ? undefined : object[key];
}
/**
* Checks if `string` contains Unicode symbols.
*
* @private
* @param {string} string The string to inspect.
* @returns {boolean} Returns `true` if a symbol is found, else `false`.
*/
function hasUnicode(string) {
return reHasUnicode.test(string);
}
/**
* Checks if `string` contains a word composed of Unicode symbols.
*
* @private
* @param {string} string The string to inspect.
* @returns {boolean} Returns `true` if a word is found, else `false`.
*/
function hasUnicodeWord(string) {
return reHasUnicodeWord.test(string);
}
/**
* Converts `iterator` to an array.
*
* @private
* @param {Object} iterator The iterator to convert.
* @returns {Array} Returns the converted array.
*/
function iteratorToArray(iterator) {
var data,
result = [];
while (!(data = iterator.next()).done) {
result.push(data.value);
}
return result;
}
/**
* Converts `map` to its key-value pairs.
*
* @private
* @param {Object} map The map to convert.
* @returns {Array} Returns the key-value pairs.
*/
function mapToArray(map) {
var index = -1,
result = Array(map.size);
map.forEach(function(value, key) {
result[++index] = [key, value];
});
return result;
}
/**
* Creates a unary function that invokes `func` with its argument transformed.
*
* @private
* @param {Function} func The function to wrap.
* @param {Function} transform The argument transform.
* @returns {Function} Returns the new function.
*/
function overArg(func, transform) {
return function(arg) {
return func(transform(arg));
};
}
/**
* Replaces all `placeholder` elements in `array` with an internal placeholder
* and returns an array of their indexes.
*
* @private
* @param {Array} array The array to modify.
* @param {*} placeholder The placeholder to replace.
* @returns {Array} Returns the new array of placeholder indexes.
*/
function replaceHolders(array, placeholder) {
var index = -1,
length = array.length,
resIndex = 0,
result = [];
while (++index < length) {
var value = array[index];
if (value === placeholder || value === PLACEHOLDER) {
array[index] = PLACEHOLDER;
result[resIndex++] = index;
}
}
return result;
}
/**
* Converts `set` to an array of its values.
*
* @private
* @param {Object} set The set to convert.
* @returns {Array} Returns the values.
*/
function setToArray(set) {
var index = -1,
result = Array(set.size);
set.forEach(function(value) {
result[++index] = value;
});
return result;
}
/**
* Converts `set` to its value-value pairs.
*
* @private
* @param {Object} set The set to convert.
* @returns {Array} Returns the value-value pairs.
*/
function setToPairs(set) {
var index = -1,
result = Array(set.size);
set.forEach(function(value) {
result[++index] = [value, value];
});
return result;
}
/**
* A specialized version of `_.indexOf` which performs strict equality
* comparisons of values, i.e. `===`.
*
* @private
* @param {Array} array The array to inspect.
* @param {*} value The value to search for.
* @param {number} fromIndex The index to search from.
* @returns {number} Returns the index of the matched value, else `-1`.
*/
function strictIndexOf(array, value, fromIndex) {
var index = fromIndex - 1,
length = array.length;
while (++index < length) {
if (array[index] === value) {
return index;
}
}
return -1;
}
/**
* A specialized version of `_.lastIndexOf` which performs strict equality
* comparisons of values, i.e. `===`.
*
* @private
* @param {Array} array The array to inspect.
* @param {*} value The value to search for.
* @param {number} fromIndex The index to search from.
* @returns {number} Returns the index of the matched value, else `-1`.
*/
function strictLastIndexOf(array, value, fromIndex) {
var index = fromIndex + 1;
while (index--) {
if (array[index] === value) {
return index;
}
}
return index;
}
/**
* Gets the number of symbols in `string`.
*
* @private
* @param {string} string The string to inspect.
* @returns {number} Returns the string size.
*/
function stringSize(string) {
return hasUnicode(string)
? unicodeSize(string)
: asciiSize(string);
}
/**
* Converts `string` to an array.
*
* @private
* @param {string} string The string to convert.
* @returns {Array} Returns the converted array.
*/
function stringToArray(string) {
return hasUnicode(string)
? unicodeToArray(string)
: asciiToArray(string);
}
/**
* Used by `_.unescape` to convert HTML entities to characters.
*
* @private
* @param {string} chr The matched character to unescape.
* @returns {string} Returns the unescaped character.
*/
var unescapeHtmlChar = basePropertyOf(htmlUnescapes);
/**
* Gets the size of a Unicode `string`.
*
* @private
* @param {string} string The string inspect.
* @returns {number} Returns the string size.
*/
function unicodeSize(string) {
var result = reUnicode.lastIndex = 0;
while (reUnicode.test(string)) {
++result;
}
return result;
}
/**
* Converts a Unicode `string` to an array.
*
* @private
* @param {string} string The string to convert.
* @returns {Array} Returns the converted array.
*/
function unicodeToArray(string) {
return string.match(reUnicode) || [];
}
/**
* Splits a Unicode `string` into an array of its words.
*
* @private
* @param {string} The string to inspect.
* @returns {Array} Returns the words of `string`.
*/
function unicodeWords(string) {
return string.match(reUnicodeWord) || [];
}
/*--------------------------------------------------------------------------*/
/**
* Create a new pristine `lodash` function using the `context` object.
*
* @static
* @memberOf _
* @since 1.1.0
* @category Util
* @param {Object} [context=root] The context object.
* @returns {Function} Returns a new `lodash` function.
* @example
*
* _.mixin({ 'foo': _.constant('foo') });
*
* var lodash = _.runInContext();
* lodash.mixin({ 'bar': lodash.constant('bar') });
*
* _.isFunction(_.foo);
* // => true
* _.isFunction(_.bar);
* // => false
*
* lodash.isFunction(lodash.foo);
* // => false
* lodash.isFunction(lodash.bar);
* // => true
*
* // Create a suped-up `defer` in Node.js.
* var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;
*/
var runInContext = (function runInContext(context) {
context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));
/** Built-in constructor references. */
var Array = context.Array,
Date = context.Date,
Error = context.Error,
Function = context.Function,
Math = context.Math,
Object = context.Object,
RegExp = context.RegExp,
String = context.String,
TypeError = context.TypeError;
/** Used for built-in method references. */
var arrayProto = Array.prototype,
funcProto = Function.prototype,
objectProto = Object.prototype;
/** Used to detect overreaching core-js shims. */
var coreJsData = context['__core-js_shared__'];
/** Used to resolve the decompiled source of functions. */
var funcToString = funcProto.toString;
/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;
/** Used to generate unique IDs. */
var idCounter = 0;
/** Used to detect methods masquerading as native. */
var maskSrcKey = (function() {
var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');
return uid ? ('Symbol(src)_1.' + uid) : '';
}());
/**
* Used to resolve the
* [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
* of values.
*/
var nativeObjectToString = objectProto.toString;
/** Used to infer the `Object` constructor. */
var objectCtorString = funcToString.call(Object);
/** Used to restore the original `_` reference in `_.noConflict`. */
var oldDash = root._;
/** Used to detect if a method is native. */
var reIsNative = RegExp('^' +
funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&')
.replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
);
/** Built-in value references. */
var Buffer = moduleExports ? context.Buffer : undefined,
Symbol = context.Symbol,
Uint8Array = context.Uint8Array,
allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,
getPrototype = overArg(Object.getPrototypeOf, Object),
objectCreate = Object.create,
propertyIsEnumerable = objectProto.propertyIsEnumerable,
splice = arrayProto.splice,
spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined,
symIterator = Symbol ? Symbol.iterator : undefined,
symToStringTag = Symbol ? Symbol.toStringTag : undefined;
var defineProperty = (function() {
try {
var func = getNative(Object, 'defineProperty');
func({}, '', {});
return func;
} catch (e) {}
}());
/** Mocked built-ins. */
var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,
ctxNow = Date && Date.now !== root.Date.now && Date.now,
ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;
/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeCeil = Math.ceil,
nativeFloor = Math.floor,
nativeGetSymbols = Object.getOwnPropertySymbols,
nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,
nativeIsFinite = context.isFinite,
nativeJoin = arrayProto.join,
nativeKeys = overArg(Object.keys, Object),
nativeMax = Math.max,
nativeMin = Math.min,
nativeNow = Date.now,
nativeParseInt = context.parseInt,
nativeRandom = Math.random,
nativeReverse = arrayProto.reverse;
/* Built-in method references that are verified to be native. */
var DataView = getNative(context, 'DataView'),
Map = getNative(context, 'Map'),
Promise = getNative(context, 'Promise'),
Set = getNative(context, 'Set'),
WeakMap = getNative(context, 'WeakMap'),
nativeCreate = getNative(Object, 'create');
/** Used to store function metadata. */
var metaMap = WeakMap && new WeakMap;
/** Used to lookup unminified function names. */
var realNames = {};
/** Used to detect maps, sets, and weakmaps. */
var dataViewCtorString = toSource(DataView),
mapCtorString = toSource(Map),
promiseCtorString = toSource(Promise),
setCtorString = toSource(Set),
weakMapCtorString = toSource(WeakMap);
/** Used to convert symbols to primitives and strings. */
var symbolProto = Symbol ? Symbol.prototype : undefined,
symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,
symbolToString = symbolProto ? symbolProto.toString : undefined;
/*------------------------------------------------------------------------*/
/**
* Creates a `lodash` object which wraps `value` to enable implicit method
* chain sequences. Methods that operate on and return arrays, collections,
* and functions can be chained together. Methods that retrieve a single value
* or may return a primitive value will automatically end the chain sequence
* and return the unwrapped value. Otherwise, the value must be unwrapped
* with `_#value`.
*
* Explicit chain sequences, which must be unwrapped with `_#value`, may be
* enabled using `_.chain`.
*
* The execution of chained methods is lazy, that is, it's deferred until
* `_#value` is implicitly or explicitly called.
*
* Lazy evaluation allows several methods to support shortcut fusion.
* Shortcut fusion is an optimization to merge iteratee calls; this avoids
* the creation of intermediate arrays and can greatly reduce the number of
* iteratee executions. Sections of a chain sequence qualify for shortcut
* fusion if the section is applied to an array and iteratees accept only
* one argument. The heuristic for whether a section qualifies for shortcut
* fusion is subject to change.
*
* Chaining is supported in custom builds as long as the `_#value` method is
* directly or indirectly included in the build.
*
* In addition to lodash methods, wrappers have `Array` and `String` methods.
*
* The wrapper `Array` methods are:
* `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`
*
* The wrapper `String` methods are:
* `replace` and `split`
*
* The wrapper methods that support shortcut fusion are:
* `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,
* `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,
* `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`
*
* The chainable wrapper methods are:
* `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,
* `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,
* `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,
* `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,
* `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,
* `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,
* `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,
* `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,
* `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,
* `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,
* `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,
* `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,
* `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,
* `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,
* `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,
* `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,
* `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,
* `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,
* `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,
* `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,
* `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,
* `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,
* `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,
* `zipObject`, `zipObjectDeep`, and `zipWith`
*
* The wrapper methods that are **not** chainable by default are:
* `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,
* `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,
* `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,
* `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,
* `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,
* `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,
* `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,
* `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,
* `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,
* `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,
* `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,
* `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,
* `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,
* `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,
* `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,
* `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,
* `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,
* `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,
* `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,
* `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,
* `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,
* `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,
* `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,
* `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,
* `upperFirst`, `value`, and `words`
*
* @name _
* @constructor
* @category Seq
* @param {*} value The value to wrap in a `lodash` instance.
* @returns {Object} Returns the new `lodash` wrapper instance.
* @example
*
* function square(n) {
* return n * n;
* }
*
* var wrapped = _([1, 2, 3]);
*
* // Returns an unwrapped value.
* wrapped.reduce(_.add);
* // => 6
*
* // Returns a wrapped value.
* var squares = wrapped.map(square);
*
* _.isArray(squares);
* // => false
*
* _.isArray(squares.value());
* // => true
*/
function lodash(value) {
if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {
if (value instanceof LodashWrapper) {
return value;
}
if (hasOwnProperty.call(value, '__wrapped__')) {
return wrapperClone(value);
}
}
return new LodashWrapper(value);
}
/**
* The base implementation of `_.create` without support for assigning
* properties to the created object.
*
* @private
* @param {Object} proto The object to inherit from.
* @returns {Object} Returns the new object.
*/
var baseCreate = (function() {
function object() {}
return function(proto) {
if (!isObject(proto)) {
return {};
}
if (objectCreate) {
return objectCreate(proto);
}
object.prototype = proto;
var result = new object;
object.prototype = undefined;
return result;
};
}());
/**
* The function whose prototype chain sequence wrappers inherit from.
*
* @private
*/
function baseLodash() {
// No operation performed.
}
/**
* The base constructor for creating `lodash` wrapper objects.
*
* @private
* @param {*} value The value to wrap.
* @param {boolean} [chainAll] Enable explicit method chain sequences.
*/
function LodashWrapper(value, chainAll) {
this.__wrapped__ = value;
this.__actions__ = [];
this.__chain__ = !!chainAll;
this.__index__ = 0;
this.__values__ = undefined;
}
/**
* By default, the template delimiters used by lodash are like those in
* embedded Ruby (ERB) as well as ES2015 template strings. Change the
* following template settings to use alternative delimiters.
*
* @static
* @memberOf _
* @type {Object}
*/
lodash.templateSettings = {
/**
* Used to detect `data` property values to be HTML-escaped.
*
* @memberOf _.templateSettings
* @type {RegExp}
*/
'escape': reEscape,
/**
* Used to detect code to be evaluated.
*
* @memberOf _.templateSettings
* @type {RegExp}
*/
'evaluate': reEvaluate,
/**
* Used to detect `data` property values to inject.
*
* @memberOf _.templateSettings
* @type {RegExp}
*/
'interpolate': reInterpolate,
/**
* Used to reference the data object in the template text.
*
* @memberOf _.templateSettings
* @type {string}
*/
'variable': '',
/**
* Used to import variables into the compiled template.
*
* @memberOf _.templateSettings
* @type {Object}
*/
'imports': {
/**
* A reference to the `lodash` function.
*
* @memberOf _.templateSettings.imports
* @type {Function}
*/
'_': lodash
}
};
// Ensure wrappers are instances of `baseLodash`.
lodash.prototype = baseLodash.prototype;
lodash.prototype.constructor = lodash;
LodashWrapper.prototype = baseCreate(baseLodash.prototype);
LodashWrapper.prototype.constructor = LodashWrapper;
/*------------------------------------------------------------------------*/
/**
* Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.
*
* @private
* @constructor
* @param {*} value The value to wrap.
*/
function LazyWrapper(value) {
this.__wrapped__ = value;
this.__actions__ = [];
this.__dir__ = 1;
this.__filtered__ = false;
this.__iteratees__ = [];
this.__takeCount__ = MAX_ARRAY_LENGTH;
this.__views__ = [];
}
/**
* Creates a clone of the lazy wrapper object.
*
* @private
* @name clone
* @memberOf LazyWrapper
* @returns {Object} Returns the cloned `LazyWrapper` object.
*/
function lazyClone() {
var result = new LazyWrapper(this.__wrapped__);
result.__actions__ = copyArray(this.__actions__);
result.__dir__ = this.__dir__;
result.__filtered__ = this.__filtered__;
result.__iteratees__ = copyArray(this.__iteratees__);
result.__takeCount__ = this.__takeCount__;
result.__views__ = copyArray(this.__views__);
return result;
}
/**
* Reverses the direction of lazy iteration.
*
* @private
* @name reverse
* @memberOf LazyWrapper
* @returns {Object} Returns the new reversed `LazyWrapper` object.
*/
function lazyReverse() {
if (this.__filtered__) {
var result = new LazyWrapper(this);
result.__dir__ = -1;
result.__filtered__ = true;
} else {
result = this.clone();
result.__dir__ *= -1;
}
return result;
}
/**
* Extracts the unwrapped value from its lazy wrapper.
*
* @private
* @name value
* @memberOf LazyWrapper
* @returns {*} Returns the unwrapped value.
*/
function lazyValue() {
var array = this.__wrapped__.value(),
dir = this.__dir__,
isArr = isArray(array),
isRight = dir < 0,
arrLength = isArr ? array.length : 0,
view = getView(0, arrLength, this.__views__),
start = view.start,
end = view.end,
length = end - start,
index = isRight ? end : (start - 1),
iteratees = this.__iteratees__,
iterLength = iteratees.length,
resIndex = 0,
takeCount = nativeMin(length, this.__takeCount__);
if (!isArr || (!isRight && arrLength == length && takeCount == length)) {
return baseWrapperValue(array, this.__actions__);
}
var result = [];
outer:
while (length-- && resIndex < takeCount) {
index += dir;
var iterIndex = -1,
value = array[index];
while (++iterIndex < iterLength) {
var data = iteratees[iterIndex],
iteratee = data.iteratee,
type = data.type,
computed = iteratee(value);
if (type == LAZY_MAP_FLAG) {
value = computed;
} else if (!computed) {
if (type == LAZY_FILTER_FLAG) {
continue outer;
} else {
break outer;
}
}
}
result[resIndex++] = value;
}
return result;
}
// Ensure `LazyWrapper` is an instance of `baseLodash`.
LazyWrapper.prototype = baseCreate(baseLodash.prototype);
LazyWrapper.prototype.constructor = LazyWrapper;
/*------------------------------------------------------------------------*/
/**
* Creates a hash object.
*
* @private
* @constructor
* @param {Array} [entries] The key-value pairs to cache.
*/
function Hash(entries) {
var index = -1,
length = entries == null ? 0 : entries.length;
this.clear();
while (++index < length) {
var entry = entries[index];
this.set(entry[0], entry[1]);
}
}
/**
* Removes all key-value entries from the hash.
*
* @private
* @name clear
* @memberOf Hash
*/
function hashClear() {
this.__data__ = nativeCreate ? nativeCreate(null) : {};
this.size = 0;
}
/**
* Removes `key` and its value from the hash.
*
* @private
* @name delete
* @memberOf Hash
* @param {Object} hash The hash to modify.
* @param {string} key The key of the value to remove.
* @returns {boolean} Returns `true` if the entry was removed, else `false`.
*/
function hashDelete(key) {
var result = this.has(key) && delete this.__data__[key];
this.size -= result ? 1 : 0;
return result;
}
/**
* Gets the hash value for `key`.
*
* @private
* @name get
* @memberOf Hash
* @param {string} key The key of the value to get.
* @returns {*} Returns the entry value.
*/
function hashGet(key) {
var data = this.__data__;
if (nativeCreate) {
var result = data[key];
return result === HASH_UNDEFINED ? undefined : result;
}
return hasOwnProperty.call(data, key) ? data[key] : undefined;
}
/**
* Checks if a hash value for `key` exists.
*
* @private
* @name has
* @memberOf Hash
* @param {string} key The key of the entry to check.
* @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
*/
function hashHas(key) {
var data = this.__data__;
return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);
}
/**
* Sets the hash `key` to `value`.
*
* @private
* @name set
* @memberOf Hash
* @param {string} key The key of the value to set.
* @param {*} value The value to set.
* @returns {Object} Returns the hash instance.
*/
function hashSet(key, value) {
var data = this.__data__;
this.size += this.has(key) ? 0 : 1;
data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;
return this;
}
// Add methods to `Hash`.
Hash.prototype.clear = hashClear;
Hash.prototype['delete'] = hashDelete;
Hash.prototype.get = hashGet;
Hash.prototype.has = hashHas;
Hash.prototype.set = hashSet;
/*------------------------------------------------------------------------*/
/**
* Creates an list cache object.
*
* @private
* @constructor
* @param {Array} [entries] The key-value pairs to cache.
*/
function ListCache(entries) {
var index = -1,
length = entries == null ? 0 : entries.length;
this.clear();
while (++index < length) {
var entry = entries[index];
this.set(entry[0], entry[1]);
}
}
/**
* Removes all key-value entries from the list cache.
*
* @private
* @name clear
* @memberOf ListCache
*/
function listCacheClear() {
this.__data__ = [];
this.size = 0;
}
/**
* Removes `key` and its value from the list cache.
*
* @private
* @name delete
* @memberOf ListCache
* @param {string} key The key of the value to remove.
* @returns {boolean} Returns `true` if the entry was removed, else `false`.
*/
function listCacheDelete(key) {
var data = this.__data__,
index = assocIndexOf(data, key);
if (index < 0) {
return false;
}
var lastIndex = data.length - 1;
if (index == lastIndex) {
data.pop();
} else {
splice.call(data, index, 1);
}
--this.size;
return true;
}
/**
* Gets the list cache value for `key`.
*
* @private
* @name get
* @memberOf ListCache
* @param {string} key The key of the value to get.
* @returns {*} Returns the entry value.
*/
function listCacheGet(key) {
var data = this.__data__,
index = assocIndexOf(data, key);
return index < 0 ? undefined : data[index][1];
}
/**
* Checks if a list cache value for `key` exists.
*
* @private
* @name has
* @memberOf ListCache
* @param {string} key The key of the entry to check.
* @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
*/
function listCacheHas(key) {
return assocIndexOf(this.__data__, key) > -1;
}
/**
* Sets the list cache `key` to `value`.
*
* @private
* @name set
* @memberOf ListCache
* @param {string} key The key of the value to set.
* @param {*} value The value to set.
* @returns {Object} Returns the list cache instance.
*/
function listCacheSet(key, value) {
var data = this.__data__,
index = assocIndexOf(data, key);
if (index < 0) {
++this.size;
data.push([key, value]);
} else {
data[index][1] = value;
}
return this;
}
// Add methods to `ListCache`.
ListCache.prototype.clear = listCacheClear;
ListCache.prototype['delete'] = listCacheDelete;
ListCache.prototype.get = listCacheGet;
ListCache.prototype.has = listCacheHas;
ListCache.prototype.set = listCacheSet;
/*------------------------------------------------------------------------*/
/**
* Creates a map cache object to store key-value pairs.
*
* @private
* @constructor
* @param {Array} [entries] The key-value pairs to cache.
*/
function MapCache(entries) {
var index = -1,
length = entries == null ? 0 : entries.length;
this.clear();
while (++index < length) {
var entry = entries[index];
this.set(entry[0], entry[1]);
}
}
/**
* Removes all key-value entries from the map.
*
* @private
* @name clear
* @memberOf MapCache
*/
function mapCacheClear() {
this.size = 0;
this.__data__ = {
'hash': new Hash,
'map': new (Map || ListCache),
'string': new Hash
};
}
/**
* Removes `key` and its value from the map.
*
* @private
* @name delete
* @memberOf MapCache
* @param {string} key The key of the value to remove.
* @returns {boolean} Returns `true` if the entry was removed, else `false`.
*/
function mapCacheDelete(key) {
var result = getMapData(this, key)['delete'](key);
this.size -= result ? 1 : 0;
return result;
}
/**
* Gets the map value for `key`.
*
* @private
* @name get
* @memberOf MapCache
* @param {string} key The key of the value to get.
* @returns {*} Returns the entry value.
*/
function mapCacheGet(key) {
return getMapData(this, key).get(key);
}
/**
* Checks if a map value for `key` exists.
*
* @private
* @name has
* @memberOf MapCache
* @param {string} key The key of the entry to check.
* @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
*/
function mapCacheHas(key) {
return getMapData(this, key).has(key);
}
/**
* Sets the map `key` to `value`.
*
* @private
* @name set
* @memberOf MapCache
* @param {string} key The key of the value to set.
* @param {*} value The value to set.
* @returns {Object} Returns the map cache instance.
*/
function mapCacheSet(key, value) {
var data = getMapData(this, key),
size = data.size;
data.set(key, value);
this.size += data.size == size ? 0 : 1;
return this;
}
// Add methods to `MapCache`.
MapCache.prototype.clear = mapCacheClear;
MapCache.prototype['delete'] = mapCacheDelete;
MapCache.prototype.get = mapCacheGet;
MapCache.prototype.has = mapCacheHas;
MapCache.prototype.set = mapCacheSet;
/*------------------------------------------------------------------------*/
/**
*
* Creates an array cache object to store unique values.
*
* @private
* @constructor
* @param {Array} [values] The values to cache.
*/
function SetCache(values) {
var index = -1,
length = values == null ? 0 : values.length;
this.__data__ = new MapCache;
while (++index < length) {
this.add(values[index]);
}
}
/**
* Adds `value` to the array cache.
*
* @private
* @name add
* @memberOf SetCache
* @alias push
* @param {*} value The value to cache.
* @returns {Object} Returns the cache instance.
*/
function setCacheAdd(value) {
this.__data__.set(value, HASH_UNDEFINED);
return this;
}
/**
* Checks if `value` is in the array cache.
*
* @private
* @name has
* @memberOf SetCache
* @param {*} value The value to search for.
* @returns {number} Returns `true` if `value` is found, else `false`.
*/
function setCacheHas(value) {
return this.__data__.has(value);
}
// Add methods to `SetCache`.
SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;
SetCache.prototype.has = setCacheHas;
/*------------------------------------------------------------------------*/
/**
* Creates a stack cache object to store key-value pairs.
*
* @private
* @constructor
* @param {Array} [entries] The key-value pairs to cache.
*/
function Stack(entries) {
var data = this.__data__ = new ListCache(entries);
this.size = data.size;
}
/**
* Removes all key-value entries from the stack.
*
* @private
* @name clear
* @memberOf Stack
*/
function stackClear() {
this.__data__ = new ListCache;
this.size = 0;
}
/**
* Removes `key` and its value from the stack.
*
* @private
* @name delete
* @memberOf Stack
* @param {string} key The key of the value to remove.
* @returns {boolean} Returns `true` if the entry was removed, else `false`.
*/
function stackDelete(key) {
var data = this.__data__,
result = data['delete'](key);
this.size = data.size;
return result;
}
/**
* Gets the stack value for `key`.
*
* @private
* @name get
* @memberOf Stack
* @param {string} key The key of the value to get.
* @returns {*} Returns the entry value.
*/
function stackGet(key) {
return this.__data__.get(key);
}
/**
* Checks if a stack value for `key` exists.
*
* @private
* @name has
* @memberOf Stack
* @param {string} key The key of the entry to check.
* @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
*/
function stackHas(key) {
return this.__data__.has(key);
}
/**
* Sets the stack `key` to `value`.
*
* @private
* @name set
* @memberOf Stack
* @param {string} key The key of the value to set.
* @param {*} value The value to set.
* @returns {Object} Returns the stack cache instance.
*/
function stackSet(key, value) {
var data = this.__data__;
if (data instanceof ListCache) {
var pairs = data.__data__;
if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {
pairs.push([key, value]);
this.size = ++data.size;
return this;
}
data = this.__data__ = new MapCache(pairs);
}
data.set(key, value);
this.size = data.size;
return this;
}
// Add methods to `Stack`.
Stack.prototype.clear = stackClear;
Stack.prototype['delete'] = stackDelete;
Stack.prototype.get = stackGet;
Stack.prototype.has = stackHas;
Stack.prototype.set = stackSet;
/*------------------------------------------------------------------------*/
/**
* Creates an array of the enumerable property names of the array-like `value`.
*
* @private
* @param {*} value The value to query.
* @param {boolean} inherited Specify returning inherited property names.
* @returns {Array} Returns the array of property names.
*/
function arrayLikeKeys(value, inherited) {
var isArr = isArray(value),
isArg = !isArr && isArguments(value),
isBuff = !isArr && !isArg && isBuffer(value),
isType = !isArr && !isArg && !isBuff && isTypedArray(value),
skipIndexes = isArr || isArg || isBuff || isType,
result = skipIndexes ? baseTimes(value.length, String) : [],
length = result.length;
for (var key in value) {
if ((inherited || hasOwnProperty.call(value, key)) &&
!(skipIndexes && (
// Safari 9 has enumerable `arguments.length` in strict mode.
key == 'length' ||
// Node.js 0.10 has enumerable non-index properties on buffers.
(isBuff && (key == 'offset' || key == 'parent')) ||
// PhantomJS 2 has enumerable non-index properties on typed arrays.
(isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||
// Skip index properties.
isIndex(key, length)
))) {
result.push(key);
}
}
return result;
}
/**
* A specialized version of `_.sample` for arrays.
*
* @private
* @param {Array} array The array to sample.
* @returns {*} Returns the random element.
*/
function arraySample(array) {
var length = array.length;
return length ? array[baseRandom(0, length - 1)] : undefined;
}
/**
* A specialized version of `_.sampleSize` for arrays.
*
* @private
* @param {Array} array The array to sample.
* @param {number} n The number of elements to sample.
* @returns {Array} Returns the random elements.
*/
function arraySampleSize(array, n) {
return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));
}
/**
* A specialized version of `_.shuffle` for arrays.
*
* @private
* @param {Array} array The array to shuffle.
* @returns {Array} Returns the new shuffled array.
*/
function arrayShuffle(array) {
return shuffleSelf(copyArray(array));
}
/**
* This function is like `assignValue` except that it doesn't assign
* `undefined` values.
*
* @private
* @param {Object} object The object to modify.
* @param {string} key The key of the property to assign.
* @param {*} value The value to assign.
*/
function assignMergeValue(object, key, value) {
if ((value !== undefined && !eq(object[key], value)) ||
(value === undefined && !(key in object))) {
baseAssignValue(object, key, value);
}
}
/**
* Assigns `value` to `key` of `object` if the existing value is not equivalent
* using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
* for equality comparisons.
*
* @private
* @param {Object} object The object to modify.
* @param {string} key The key of the property to assign.
* @param {*} value The value to assign.
*/
function assignValue(object, key, value) {
var objValue = object[key];
if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
(value === undefined && !(key in object))) {
baseAssignValue(object, key, value);
}
}
/**
* Gets the index at which the `key` is found in `array` of key-value pairs.
*
* @private
* @param {Array} array The array to inspect.
* @param {*} key The key to search for.
* @returns {number} Returns the index of the matched value, else `-1`.
*/
function assocIndexOf(array, key) {
var length = array.length;
while (length--) {
if (eq(array[length][0], key)) {
return length;
}
}
return -1;
}
/**
* Aggregates elements of `collection` on `accumulator` with keys transformed
* by `iteratee` and values set by `setter`.
*
* @private
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} setter The function to set `accumulator` values.
* @param {Function} iteratee The iteratee to transform keys.
* @param {Object} accumulator The initial aggregated object.
* @returns {Function} Returns `accumulator`.
*/
function baseAggregator(collection, setter, iteratee, accumulator) {
baseEach(collection, function(value, key, collection) {
setter(accumulator, value, iteratee(value), collection);
});
return accumulator;
}
/**
* The base implementation of `_.assign` without support for multiple sources
* or `customizer` functions.
*
* @private
* @param {Object} object The destination object.
* @param {Object} source The source object.
* @returns {Object} Returns `object`.
*/
function baseAssign(object, source) {
return object && copyObject(source, keys(source), object);
}
/**
* The base implementation of `_.assignIn` without support for multiple sources
* or `customizer` functions.
*
* @private
* @param {Object} object The destination object.
* @param {Object} source The source object.
* @returns {Object} Returns `object`.
*/
function baseAssignIn(object, source) {
return object && copyObject(source, keysIn(source), object);
}
/**
* The base implementation of `assignValue` and `assignMergeValue` without
* value checks.
*
* @private
* @param {Object} object The object to modify.
* @param {string} key The key of the property to assign.
* @param {*} value The value to assign.
*/
function baseAssignValue(object, key, value) {
if (key == '__proto__' && defineProperty) {
defineProperty(object, key, {
'configurable': true,
'enumerable': true,
'value': value,
'writable': true
});
} else {
object[key] = value;
}
}
/**
* The base implementation of `_.at` without support for individual paths.
*
* @private
* @param {Object} object The object to iterate over.
* @param {string[]} paths The property paths to pick.
* @returns {Array} Returns the picked elements.
*/
function baseAt(object, paths) {
var index = -1,
length = paths.length,
result = Array(length),
skip = object == null;
while (++index < length) {
result[index] = skip ? undefined : get(object, paths[index]);
}
return result;
}
/**
* The base implementation of `_.clamp` which doesn't coerce arguments.
*
* @private
* @param {number} number The number to clamp.
* @param {number} [lower] The lower bound.
* @param {number} upper The upper bound.
* @returns {number} Returns the clamped number.
*/
function baseClamp(number, lower, upper) {
if (number === number) {
if (upper !== undefined) {
number = number <= upper ? number : upper;
}
if (lower !== undefined) {
number = number >= lower ? number : lower;
}
}
return number;
}
/**
* The base implementation of `_.clone` and `_.cloneDeep` which tracks
* traversed objects.
*
* @private
* @param {*} value The value to clone.
* @param {boolean} bitmask The bitmask flags.
* 1 - Deep clone
* 2 - Flatten inherited properties
* 4 - Clone symbols
* @param {Function} [customizer] The function to customize cloning.
* @param {string} [key] The key of `value`.
* @param {Object} [object] The parent object of `value`.
* @param {Object} [stack] Tracks traversed objects and their clone counterparts.
* @returns {*} Returns the cloned value.
*/
function baseClone(value, bitmask, customizer, key, object, stack) {
var result,
isDeep = bitmask & CLONE_DEEP_FLAG,
isFlat = bitmask & CLONE_FLAT_FLAG,
isFull = bitmask & CLONE_SYMBOLS_FLAG;
if (customizer) {
result = object ? customizer(value, key, object, stack) : customizer(value);
}
if (result !== undefined) {
return result;
}
if (!isObject(value)) {
return value;
}
var isArr = isArray(value);
if (isArr) {
result = initCloneArray(value);
if (!isDeep) {
return copyArray(value, result);
}
} else {
var tag = getTag(value),
isFunc = tag == funcTag || tag == genTag;
if (isBuffer(value)) {
return cloneBuffer(value, isDeep);
}
if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
result = (isFlat || isFunc) ? {} : initCloneObject(value);
if (!isDeep) {
return isFlat
? copySymbolsIn(value, baseAssignIn(result, value))
: copySymbols(value, baseAssign(result, value));
}
} else {
if (!cloneableTags[tag]) {
return object ? value : {};
}
result = initCloneByTag(value, tag, isDeep);
}
}
// Check for circular references and return its corresponding clone.
stack || (stack = new Stack);
var stacked = stack.get(value);
if (stacked) {
return stacked;
}
stack.set(value, result);
if (isSet(value)) {
value.forEach(function(subValue) {
result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));
});
return result;
}
if (isMap(value)) {
value.forEach(function(subValue, key) {
result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));
});
return result;
}
var keysFunc = isFull
? (isFlat ? getAllKeysIn : getAllKeys)
: (isFlat ? keysIn : keys);
var props = isArr ? undefined : keysFunc(value);
arrayEach(props || value, function(subValue, key) {
if (props) {
key = subValue;
subValue = value[key];
}
// Recursively populate clone (susceptible to call stack limits).
assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));
});
return result;
}
/**
* The base implementation of `_.conforms` which doesn't clone `source`.
*
* @private
* @param {Object} source The object of property predicates to conform to.
* @returns {Function} Returns the new spec function.
*/
function baseConforms(source) {
var props = keys(source);
return function(object) {
return baseConformsTo(object, source, props);
};
}
/**
* The base implementation of `_.conformsTo` which accepts `props` to check.
*
* @private
* @param {Object} object The object to inspect.
* @param {Object} source The object of property predicates to conform to.
* @returns {boolean} Returns `true` if `object` conforms, else `false`.
*/
function baseConformsTo(object, source, props) {
var length = props.length;
if (object == null) {
return !length;
}
object = Object(object);
while (length--) {
var key = props[length],
predicate = source[key],
value = object[key];
if ((value === undefined && !(key in object)) || !predicate(value)) {
return false;
}
}
return true;
}
/**
* The base implementation of `_.delay` and `_.defer` which accepts `args`
* to provide to `func`.
*
* @private
* @param {Function} func The function to delay.
* @param {number} wait The number of milliseconds to delay invocation.
* @param {Array} args The arguments to provide to `func`.
* @returns {number|Object} Returns the timer id or timeout object.
*/
function baseDelay(func, wait, args) {
if (typeof func != 'function') {
throw new TypeError(FUNC_ERROR_TEXT);
}
return setTimeout(function() { func.apply(undefined, args); }, wait);
}
/**
* The base implementation of methods like `_.difference` without support
* for excluding multiple arrays or iteratee shorthands.
*
* @private
* @param {Array} array The array to inspect.
* @param {Array} values The values to exclude.
* @param {Function} [iteratee] The iteratee invoked per element.
* @param {Function} [comparator] The comparator invoked per element.
* @returns {Array} Returns the new array of filtered values.
*/
function baseDifference(array, values, iteratee, comparator) {
var index = -1,
includes = arrayIncludes,
isCommon = true,
length = array.length,
result = [],
valuesLength = values.length;
if (!length) {
return result;
}
if (iteratee) {
values = arrayMap(values, baseUnary(iteratee));
}
if (comparator) {
includes = arrayIncludesWith;
isCommon = false;
}
else if (values.length >= LARGE_ARRAY_SIZE) {
includes = cacheHas;
isCommon = false;
values = new SetCache(values);
}
outer:
while (++index < length) {
var value = array[index],
computed = iteratee == null ? value : iteratee(value);
value = (comparator || value !== 0) ? value : 0;
if (isCommon && computed === computed) {
var valuesIndex = valuesLength;
while (valuesIndex--) {
if (values[valuesIndex] === computed) {
continue outer;
}
}
result.push(value);
}
else if (!includes(values, computed, comparator)) {
result.push(value);
}
}
return result;
}
/**
* The base implementation of `_.forEach` without support for iteratee shorthands.
*
* @private
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @returns {Array|Object} Returns `collection`.
*/
var baseEach = createBaseEach(baseForOwn);
/**
* The base implementation of `_.forEachRight` without support for iteratee shorthands.
*
* @private
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @returns {Array|Object} Returns `collection`.
*/
var baseEachRight = createBaseEach(baseForOwnRight, true);
/**
* The base implementation of `_.every` without support for iteratee shorthands.
*
* @private
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} predicate The function invoked per iteration.
* @returns {boolean} Returns `true` if all elements pass the predicate check,
* else `false`
*/
function baseEvery(collection, predicate) {
var result = true;
baseEach(collection, function(value, index, collection) {
result = !!predicate(value, index, collection);
return result;
});
return result;
}
/**
* The base implementation of methods like `_.max` and `_.min` which accepts a
* `comparator` to determine the extremum value.
*
* @private
* @param {Array} array The array to iterate over.
* @param {Function} iteratee The iteratee invoked per iteration.
* @param {Function} comparator The comparator used to compare values.
* @returns {*} Returns the extremum value.
*/
function baseExtremum(array, iteratee, comparator) {
var index = -1,
length = array.length;
while (++index < length) {
var value = array[index],
current = iteratee(value);
if (current != null && (computed === undefined
? (current === current && !isSymbol(current))
: comparator(current, computed)
)) {
var computed = current,
result = value;
}
}
return result;
}
/**
* The base implementation of `_.fill` without an iteratee call guard.
*
* @private
* @param {Array} array The array to fill.
* @param {*} value The value to fill `array` with.
* @param {number} [start=0] The start position.
* @param {number} [end=array.length] The end position.
* @returns {Array} Returns `array`.
*/
function baseFill(array, value, start, end) {
var length = array.length;
start = toInteger(start);
if (start < 0) {
start = -start > length ? 0 : (length + start);
}
end = (end === undefined || end > length) ? length : toInteger(end);
if (end < 0) {
end += length;
}
end = start > end ? 0 : toLength(end);
while (start < end) {
array[start++] = value;
}
return array;
}
/**
* The base implementation of `_.filter` without support for iteratee shorthands.
*
* @private
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} predicate The function invoked per iteration.
* @returns {Array} Returns the new filtered array.
*/
function baseFilter(collection, predicate) {
var result = [];
baseEach(collection, function(value, index, collection) {
if (predicate(value, index, collection)) {
result.push(value);
}
});
return result;
}
/**
* The base implementation of `_.flatten` with support for restricting flattening.
*
* @private
* @param {Array} array The array to flatten.
* @param {number} depth The maximum recursion depth.
* @param {boolean} [predicate=isFlattenable] The function invoked per iteration.
* @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.
* @param {Array} [result=[]] The initial result value.
* @returns {Array} Returns the new flattened array.
*/
function baseFlatten(array, depth, predicate, isStrict, result) {
var index = -1,
length = array.length;
predicate || (predicate = isFlattenable);
result || (result = []);
while (++index < length) {
var value = array[index];
if (depth > 0 && predicate(value)) {
if (depth > 1) {
// Recursively flatten arrays (susceptible to call stack limits).
baseFlatten(value, depth - 1, predicate, isStrict, result);
} else {
arrayPush(result, value);
}
} else if (!isStrict) {
result[result.length] = value;
}
}
return result;
}
/**
* The base implementation of `baseForOwn` which iterates over `object`
* properties returned by `keysFunc` and invokes `iteratee` for each property.
* Iteratee functions may exit iteration early by explicitly returning `false`.
*
* @private
* @param {Object} object The object to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @param {Function} keysFunc The function to get the keys of `object`.
* @returns {Object} Returns `object`.
*/
var baseFor = createBaseFor();
/**
* This function is like `baseFor` except that it iterates over properties
* in the opposite order.
*
* @private
* @param {Object} object The object to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @param {Function} keysFunc The function to get the keys of `object`.
* @returns {Object} Returns `object`.
*/
var baseForRight = createBaseFor(true);
/**
* The base implementation of `_.forOwn` without support for iteratee shorthands.
*
* @private
* @param {Object} object The object to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @returns {Object} Returns `object`.
*/
function baseForOwn(object, iteratee) {
return object && baseFor(object, iteratee, keys);
}
/**
* The base implementation of `_.forOwnRight` without support for iteratee shorthands.
*
* @private
* @param {Object} object The object to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @returns {Object} Returns `object`.
*/
function baseForOwnRight(object, iteratee) {
return object && baseForRight(object, iteratee, keys);
}
/**
* The base implementation of `_.functions` which creates an array of
* `object` function property names filtered from `props`.
*
* @private
* @param {Object} object The object to inspect.
* @param {Array} props The property names to filter.
* @returns {Array} Returns the function names.
*/
function baseFunctions(object, props) {
return arrayFilter(props, function(key) {
return isFunction(object[key]);
});
}
/**
* The base implementation of `_.get` without support for default values.
*
* @private
* @param {Object} object The object to query.
* @param {Array|string} path The path of the property to get.
* @returns {*} Returns the resolved value.
*/
function baseGet(object, path) {
path = castPath(path, object);
var index = 0,
length = path.length;
while (object != null && index < length) {
object = object[toKey(path[index++])];
}
return (index && index == length) ? object : undefined;
}
/**
* The base implementation of `getAllKeys` and `getAllKeysIn` which uses
* `keysFunc` and `symbolsFunc` to get the enumerable property names and
* symbols of `object`.
*
* @private
* @param {Object} object The object to query.
* @param {Function} keysFunc The function to get the keys of `object`.
* @param {Function} symbolsFunc The function to get the symbols of `object`.
* @returns {Array} Returns the array of property names and symbols.
*/
function baseGetAllKeys(object, keysFunc, symbolsFunc) {
var result = keysFunc(object);
return isArray(object) ? result : arrayPush(result, symbolsFunc(object));
}
/**
* The base implementation of `getTag` without fallbacks for buggy environments.
*
* @private
* @param {*} value The value to query.
* @returns {string} Returns the `toStringTag`.
*/
function baseGetTag(value) {
if (value == null) {
return value === undefined ? undefinedTag : nullTag;
}
return (symToStringTag && symToStringTag in Object(value))
? getRawTag(value)
: objectToString(value);
}
/**
* The base implementation of `_.gt` which doesn't coerce arguments.
*
* @private
* @param {*} value The value to compare.
* @param {*} other The other value to compare.
* @returns {boolean} Returns `true` if `value` is greater than `other`,
* else `false`.
*/
function baseGt(value, other) {
return value > other;
}
/**
* The base implementation of `_.has` without support for deep paths.
*
* @private
* @param {Object} [object] The object to query.
* @param {Array|string} key The key to check.
* @returns {boolean} Returns `true` if `key` exists, else `false`.
*/
function baseHas(object, key) {
return object != null && hasOwnProperty.call(object, key);
}
/**
* The base implementation of `_.hasIn` without support for deep paths.
*
* @private
* @param {Object} [object] The object to query.
* @param {Array|string} key The key to check.
* @returns {boolean} Returns `true` if `key` exists, else `false`.
*/
function baseHasIn(object, key) {
return object != null && key in Object(object);
}
/**
* The base implementation of `_.inRange` which doesn't coerce arguments.
*
* @private
* @param {number} number The number to check.
* @param {number} start The start of the range.
* @param {number} end The end of the range.
* @returns {boolean} Returns `true` if `number` is in the range, else `false`.
*/
function baseInRange(number, start, end) {
return number >= nativeMin(start, end) && number < nativeMax(start, end);
}
/**
* The base implementation of methods like `_.intersection`, without support
* for iteratee shorthands, that accepts an array of arrays to inspect.
*
* @private
* @param {Array} arrays The arrays to inspect.
* @param {Function} [iteratee] The iteratee invoked per element.
* @param {Function} [comparator] The comparator invoked per element.
* @returns {Array} Returns the new array of shared values.
*/
function baseIntersection(arrays, iteratee, comparator) {
var includes = comparator ? arrayIncludesWith : arrayIncludes,
length = arrays[0].length,
othLength = arrays.length,
othIndex = othLength,
caches = Array(othLength),
maxLength = Infinity,
result = [];
while (othIndex--) {
var array = arrays[othIndex];
if (othIndex && iteratee) {
array = arrayMap(array, baseUnary(iteratee));
}
maxLength = nativeMin(array.length, maxLength);
caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))
? new SetCache(othIndex && array)
: undefined;
}
array = arrays[0];
var index = -1,
seen = caches[0];
outer:
while (++index < length && result.length < maxLength) {
var value = array[index],
computed = iteratee ? iteratee(value) : value;
value = (comparator || value !== 0) ? value : 0;
if (!(seen
? cacheHas(seen, computed)
: includes(result, computed, comparator)
)) {
othIndex = othLength;
while (--othIndex) {
var cache = caches[othIndex];
if (!(cache
? cacheHas(cache, computed)
: includes(arrays[othIndex], computed, comparator))
) {
continue outer;
}
}
if (seen) {
seen.push(computed);
}
result.push(value);
}
}
return result;
}
/**
* The base implementation of `_.invert` and `_.invertBy` which inverts
* `object` with values transformed by `iteratee` and set by `setter`.
*
* @private
* @param {Object} object The object to iterate over.
* @param {Function} setter The function to set `accumulator` values.
* @param {Function} iteratee The iteratee to transform values.
* @param {Object} accumulator The initial inverted object.
* @returns {Function} Returns `accumulator`.
*/
function baseInverter(object, setter, iteratee, accumulator) {
baseForOwn(object, function(value, key, object) {
setter(accumulator, iteratee(value), key, object);
});
return accumulator;
}
/**
* The base implementation of `_.invoke` without support for individual
* method arguments.
*
* @private
* @param {Object} object The object to query.
* @param {Array|string} path The path of the method to invoke.
* @param {Array} args The arguments to invoke the method with.
* @returns {*} Returns the result of the invoked method.
*/
function baseInvoke(object, path, args) {
path = castPath(path, object);
object = parent(object, path);
var func = object == null ? object : object[toKey(last(path))];
return func == null ? undefined : apply(func, object, args);
}
/**
* The base implementation of `_.isArguments`.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is an `arguments` object,
*/
function baseIsArguments(value) {
return isObjectLike(value) && baseGetTag(value) == argsTag;
}
/**
* The base implementation of `_.isArrayBuffer` without Node.js optimizations.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
*/
function baseIsArrayBuffer(value) {
return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;
}
/**
* The base implementation of `_.isDate` without Node.js optimizations.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a date object, else `false`.
*/
function baseIsDate(value) {
return isObjectLike(value) && baseGetTag(value) == dateTag;
}
/**
* The base implementation of `_.isEqual` which supports partial comparisons
* and tracks traversed objects.
*
* @private
* @param {*} value The value to compare.
* @param {*} other The other value to compare.
* @param {boolean} bitmask The bitmask flags.
* 1 - Unordered comparison
* 2 - Partial comparison
* @param {Function} [customizer] The function to customize comparisons.
* @param {Object} [stack] Tracks traversed `value` and `other` objects.
* @returns {boolean} Returns `true` if the values are equivalent, else `false`.
*/
function baseIsEqual(value, other, bitmask, customizer, stack) {
if (value === other) {
return true;
}
if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {
return value !== value && other !== other;
}
return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);
}
/**
* A specialized version of `baseIsEqual` for arrays and objects which performs
* deep comparisons and tracks traversed objects enabling objects with circular
* references to be compared.
*
* @private
* @param {Object} object The object to compare.
* @param {Object} other The other object to compare.
* @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
* @param {Function} customizer The function to customize comparisons.
* @param {Function} equalFunc The function to determine equivalents of values.
* @param {Object} [stack] Tracks traversed `object` and `other` objects.
* @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
*/
function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
var objIsArr = isArray(object),
othIsArr = isArray(other),
objTag = objIsArr ? arrayTag : getTag(object),
othTag = othIsArr ? arrayTag : getTag(other);
objTag = objTag == argsTag ? objectTag : objTag;
othTag = othTag == argsTag ? objectTag : othTag;
var objIsObj = objTag == objectTag,
othIsObj = othTag == objectTag,
isSameTag = objTag == othTag;
if (isSameTag && isBuffer(object)) {
if (!isBuffer(other)) {
return false;
}
objIsArr = true;
objIsObj = false;
}
if (isSameTag && !objIsObj) {
stack || (stack = new Stack);
return (objIsArr || isTypedArray(object))
? equalArrays(object, other, bitmask, customizer, equalFunc, stack)
: equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
}
if (!(bitmask & COMPARE_PARTIAL_FLAG)) {
var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');
if (objIsWrapped || othIsWrapped) {
var objUnwrapped = objIsWrapped ? object.value() : object,
othUnwrapped = othIsWrapped ? other.value() : other;
stack || (stack = new Stack);
return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
}
}
if (!isSameTag) {
return false;
}
stack || (stack = new Stack);
return equalObjects(object, other, bitmask, customizer, equalFunc, stack);
}
/**
* The base implementation of `_.isMap` without Node.js optimizations.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a map, else `false`.
*/
function baseIsMap(value) {
return isObjectLike(value) && getTag(value) == mapTag;
}
/**
* The base implementation of `_.isMatch` without support for iteratee shorthands.
*
* @private
* @param {Object} object The object to inspect.
* @param {Object} source The object of property values to match.
* @param {Array} matchData The property names, values, and compare flags to match.
* @param {Function} [customizer] The function to customize comparisons.
* @returns {boolean} Returns `true` if `object` is a match, else `false`.
*/
function baseIsMatch(object, source, matchData, customizer) {
var index = matchData.length,
length = index,
noCustomizer = !customizer;
if (object == null) {
return !length;
}
object = Object(object);
while (index--) {
var data = matchData[index];
if ((noCustomizer && data[2])
? data[1] !== object[data[0]]
: !(data[0] in object)
) {
return false;
}
}
while (++index < length) {
data = matchData[index];
var key = data[0],
objValue = object[key],
srcValue = data[1];
if (noCustomizer && data[2]) {
if (objValue === undefined && !(key in object)) {
return false;
}
} else {
var stack = new Stack;
if (customizer) {
var result = customizer(objValue, srcValue, key, object, source, stack);
}
if (!(result === undefined
? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)
: result
)) {
return false;
}
}
}
return true;
}
/**
* The base implementation of `_.isNative` without bad shim checks.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a native function,
* else `false`.
*/
function baseIsNative(value) {
if (!isObject(value) || isMasked(value)) {
return false;
}
var pattern = isFunction(value) ? reIsNative : reIsHostCtor;
return pattern.test(toSource(value));
}
/**
* The base implementation of `_.isRegExp` without Node.js optimizations.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
*/
function baseIsRegExp(value) {
return isObjectLike(value) && baseGetTag(value) == regexpTag;
}
/**
* The base implementation of `_.isSet` without Node.js optimizations.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a set, else `false`.
*/
function baseIsSet(value) {
return isObjectLike(value) && getTag(value) == setTag;
}
/**
* The base implementation of `_.isTypedArray` without Node.js optimizations.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
*/
function baseIsTypedArray(value) {
return isObjectLike(value) &&
isLength(value.length) && !!typedArrayTags[baseGetTag(value)];
}
/**
* The base implementation of `_.iteratee`.
*
* @private
* @param {*} [value=_.identity] The value to convert to an iteratee.
* @returns {Function} Returns the iteratee.
*/
function baseIteratee(value) {
// Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.
// See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.
if (typeof value == 'function') {
return value;
}
if (value == null) {
return identity;
}
if (typeof value == 'object') {
return isArray(value)
? baseMatchesProperty(value[0], value[1])
: baseMatches(value);
}
return property(value);
}
/**
* The base implementation of `_.keys` which doesn't treat sparse arrays as dense.
*
* @private
* @param {Object} object The object to query.
* @returns {Array} Returns the array of property names.
*/
function baseKeys(object) {
if (!isPrototype(object)) {
return nativeKeys(object);
}
var result = [];
for (var key in Object(object)) {
if (hasOwnProperty.call(object, key) && key != 'constructor') {
result.push(key);
}
}
return result;
}
/**
* The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.
*
* @private
* @param {Object} object The object to query.
* @returns {Array} Returns the array of property names.
*/
function baseKeysIn(object) {
if (!isObject(object)) {
return nativeKeysIn(object);
}
var isProto = isPrototype(object),
result = [];
for (var key in object) {
if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {
result.push(key);
}
}
return result;
}
/**
* The base implementation of `_.lt` which doesn't coerce arguments.
*
* @private
* @param {*} value The value to compare.
* @param {*} other The other value to compare.
* @returns {boolean} Returns `true` if `value` is less than `other`,
* else `false`.
*/
function baseLt(value, other) {
return value < other;
}
/**
* The base implementation of `_.map` without support for iteratee shorthands.
*
* @private
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @returns {Array} Returns the new mapped array.
*/
function baseMap(collection, iteratee) {
var index = -1,
result = isArrayLike(collection) ? Array(collection.length) : [];
baseEach(collection, function(value, key, collection) {
result[++index] = iteratee(value, key, collection);
});
return result;
}
/**
* The base implementation of `_.matches` which doesn't clone `source`.
*
* @private
* @param {Object} source The object of property values to match.
* @returns {Function} Returns the new spec function.
*/
function baseMatches(source) {
var matchData = getMatchData(source);
if (matchData.length == 1 && matchData[0][2]) {
return matchesStrictComparable(matchData[0][0], matchData[0][1]);
}
return function(object) {
return object === source || baseIsMatch(object, source, matchData);
};
}
/**
* The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.
*
* @private
* @param {string} path The path of the property to get.
* @param {*} srcValue The value to match.
* @returns {Function} Returns the new spec function.
*/
function baseMatchesProperty(path, srcValue) {
if (isKey(path) && isStrictComparable(srcValue)) {
return matchesStrictComparable(toKey(path), srcValue);
}
return function(object) {
var objValue = get(object, path);
return (objValue === undefined && objValue === srcValue)
? hasIn(object, path)
: baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);
};
}
/**
* The base implementation of `_.merge` without support for multiple sources.
*
* @private
* @param {Object} object The destination object.
* @param {Object} source The source object.
* @param {number} srcIndex The index of `source`.
* @param {Function} [customizer] The function to customize merged values.
* @param {Object} [stack] Tracks traversed source values and their merged
* counterparts.
*/
function baseMerge(object, source, srcIndex, customizer, stack) {
if (object === source) {
return;
}
baseFor(source, function(srcValue, key) {
if (isObject(srcValue)) {
stack || (stack = new Stack);
baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
}
else {
var newValue = customizer
? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)
: undefined;
if (newValue === undefined) {
newValue = srcValue;
}
assignMergeValue(object, key, newValue);
}
}, keysIn);
}
/**
* A specialized version of `baseMerge` for arrays and objects which performs
* deep merges and tracks traversed objects enabling objects with circular
* references to be merged.
*
* @private
* @param {Object} object The destination object.
* @param {Object} source The source object.
* @param {string} key The key of the value to merge.
* @param {number} srcIndex The index of `source`.
* @param {Function} mergeFunc The function to merge values.
* @param {Function} [customizer] The function to customize assigned values.
* @param {Object} [stack] Tracks traversed source values and their merged
* counterparts.
*/
function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {
var objValue = safeGet(object, key),
srcValue = safeGet(source, key),
stacked = stack.get(srcValue);
if (stacked) {
assignMergeValue(object, key, stacked);
return;
}
var newValue = customizer
? customizer(objValue, srcValue, (key + ''), object, source, stack)
: undefined;
var isCommon = newValue === undefined;
if (isCommon) {
var isArr = isArray(srcValue),
isBuff = !isArr && isBuffer(srcValue),
isTyped = !isArr && !isBuff && isTypedArray(srcValue);
newValue = srcValue;
if (isArr || isBuff || isTyped) {
if (isArray(objValue)) {
newValue = objValue;
}
else if (isArrayLikeObject(objValue)) {
newValue = copyArray(objValue);
}
else if (isBuff) {
isCommon = false;
newValue = cloneBuffer(srcValue, true);
}
else if (isTyped) {
isCommon = false;
newValue = cloneTypedArray(srcValue, true);
}
else {
newValue = [];
}
}
else if (isPlainObject(srcValue) || isArguments(srcValue)) {
newValue = objValue;
if (isArguments(objValue)) {
newValue = toPlainObject(objValue);
}
else if (!isObject(objValue) || isFunction(objValue)) {
newValue = initCloneObject(srcValue);
}
}
else {
isCommon = false;
}
}
if (isCommon) {
// Recursively merge objects and arrays (susceptible to call stack limits).
stack.set(srcValue, newValue);
mergeFunc(newValue, srcValue, srcIndex, customizer, stack);
stack['delete'](srcValue);
}
assignMergeValue(object, key, newValue);
}
/**
* The base implementation of `_.nth` which doesn't coerce arguments.
*
* @private
* @param {Array} array The array to query.
* @param {number} n The index of the element to return.
* @returns {*} Returns the nth element of `array`.
*/
function baseNth(array, n) {
var length = array.length;
if (!length) {
return;
}
n += n < 0 ? length : 0;
return isIndex(n, length) ? array[n] : undefined;
}
/**
* The base implementation of `_.orderBy` without param guards.
*
* @private
* @param {Array|Object} collection The collection to iterate over.
* @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.
* @param {string[]} orders The sort orders of `iteratees`.
* @returns {Array} Returns the new sorted array.
*/
function baseOrderBy(collection, iteratees, orders) {
var index = -1;
iteratees = arrayMap(iteratees.length ? iteratees : [identity], baseUnary(getIteratee()));
var result = baseMap(collection, function(value, key, collection) {
var criteria = arrayMap(iteratees, function(iteratee) {
return iteratee(value);
});
return { 'criteria': criteria, 'index': ++index, 'value': value };
});
return baseSortBy(result, function(object, other) {
return compareMultiple(object, other, orders);
});
}
/**
* The base implementation of `_.pick` without support for individual
* property identifiers.
*
* @private
* @param {Object} object The source object.
* @param {string[]} paths The property paths to pick.
* @returns {Object} Returns the new object.
*/
function basePick(object, paths) {
return basePickBy(object, paths, function(value, path) {
return hasIn(object, path);
});
}
/**
* The base implementation of `_.pickBy` without support for iteratee shorthands.
*
* @private
* @param {Object} object The source object.
* @param {string[]} paths The property paths to pick.
* @param {Function} predicate The function invoked per property.
* @returns {Object} Returns the new object.
*/
function basePickBy(object, paths, predicate) {
var index = -1,
length = paths.length,
result = {};
while (++index < length) {
var path = paths[index],
value = baseGet(object, path);
if (predicate(value, path)) {
baseSet(result, castPath(path, object), value);
}
}
return result;
}
/**
* A specialized version of `baseProperty` which supports deep paths.
*
* @private
* @param {Array|string} path The path of the property to get.
* @returns {Function} Returns the new accessor function.
*/
function basePropertyDeep(path) {
return function(object) {
return baseGet(object, path);
};
}
/**
* The base implementation of `_.pullAllBy` without support for iteratee
* shorthands.
*
* @private
* @param {Array} array The array to modify.
* @param {Array} values The values to remove.
* @param {Function} [iteratee] The iteratee invoked per element.
* @param {Function} [comparator] The comparator invoked per element.
* @returns {Array} Returns `array`.
*/
function basePullAll(array, values, iteratee, comparator) {
var indexOf = comparator ? baseIndexOfWith : baseIndexOf,
index = -1,
length = values.length,
seen = array;
if (array === values) {
values = copyArray(values);
}
if (iteratee) {
seen = arrayMap(array, baseUnary(iteratee));
}
while (++index < length) {
var fromIndex = 0,
value = values[index],
computed = iteratee ? iteratee(value) : value;
while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {
if (seen !== array) {
splice.call(seen, fromIndex, 1);
}
splice.call(array, fromIndex, 1);
}
}
return array;
}
/**
* The base implementation of `_.pullAt` without support for individual
* indexes or capturing the removed elements.
*
* @private
* @param {Array} array The array to modify.
* @param {number[]} indexes The indexes of elements to remove.
* @returns {Array} Returns `array`.
*/
function basePullAt(array, indexes) {
var length = array ? indexes.length : 0,
lastIndex = length - 1;
while (length--) {
var index = indexes[length];
if (length == lastIndex || index !== previous) {
var previous = index;
if (isIndex(index)) {
splice.call(array, index, 1);
} else {
baseUnset(array, index);
}
}
}
return array;
}
/**
* The base implementation of `_.random` without support for returning
* floating-point numbers.
*
* @private
* @param {number} lower The lower bound.
* @param {number} upper The upper bound.
* @returns {number} Returns the random number.
*/
function baseRandom(lower, upper) {
return lower + nativeFloor(nativeRandom() * (upper - lower + 1));
}
/**
* The base implementation of `_.range` and `_.rangeRight` which doesn't
* coerce arguments.
*
* @private
* @param {number} start The start of the range.
* @param {number} end The end of the range.
* @param {number} step The value to increment or decrement by.
* @param {boolean} [fromRight] Specify iterating from right to left.
* @returns {Array} Returns the range of numbers.
*/
function baseRange(start, end, step, fromRight) {
var index = -1,
length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),
result = Array(length);
while (length--) {
result[fromRight ? length : ++index] = start;
start += step;
}
return result;
}
/**
* The base implementation of `_.repeat` which doesn't coerce arguments.
*
* @private
* @param {string} string The string to repeat.
* @param {number} n The number of times to repeat the string.
* @returns {string} Returns the repeated string.
*/
function baseRepeat(string, n) {
var result = '';
if (!string || n < 1 || n > MAX_SAFE_INTEGER) {
return result;
}
// Leverage the exponentiation by squaring algorithm for a faster repeat.
// See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.
do {
if (n % 2) {
result += string;
}
n = nativeFloor(n / 2);
if (n) {
string += string;
}
} while (n);
return result;
}
/**
* The base implementation of `_.rest` which doesn't validate or coerce arguments.
*
* @private
* @param {Function} func The function to apply a rest parameter to.
* @param {number} [start=func.length-1] The start position of the rest parameter.
* @returns {Function} Returns the new function.
*/
function baseRest(func, start) {
return setToString(overRest(func, start, identity), func + '');
}
/**
* The base implementation of `_.sample`.
*
* @private
* @param {Array|Object} collection The collection to sample.
* @returns {*} Returns the random element.
*/
function baseSample(collection) {
return arraySample(values(collection));
}
/**
* The base implementation of `_.sampleSize` without param guards.
*
* @private
* @param {Array|Object} collection The collection to sample.
* @param {number} n The number of elements to sample.
* @returns {Array} Returns the random elements.
*/
function baseSampleSize(collection, n) {
var array = values(collection);
return shuffleSelf(array, baseClamp(n, 0, array.length));
}
/**
* The base implementation of `_.set`.
*
* @private
* @param {Object} object The object to modify.
* @param {Array|string} path The path of the property to set.
* @param {*} value The value to set.
* @param {Function} [customizer] The function to customize path creation.
* @returns {Object} Returns `object`.
*/
function baseSet(object, path, value, customizer) {
if (!isObject(object)) {
return object;
}
path = castPath(path, object);
var index = -1,
length = path.length,
lastIndex = length - 1,
nested = object;
while (nested != null && ++index < length) {
var key = toKey(path[index]),
newValue = value;
if (index != lastIndex) {
var objValue = nested[key];
newValue = customizer ? customizer(objValue, key, nested) : undefined;
if (newValue === undefined) {
newValue = isObject(objValue)
? objValue
: (isIndex(path[index + 1]) ? [] : {});
}
}
assignValue(nested, key, newValue);
nested = nested[key];
}
return object;
}
/**
* The base implementation of `setData` without support for hot loop shorting.
*
* @private
* @param {Function} func The function to associate metadata with.
* @param {*} data The metadata.
* @returns {Function} Returns `func`.
*/
var baseSetData = !metaMap ? identity : function(func, data) {
metaMap.set(func, data);
return func;
};
/**
* The base implementation of `setToString` without support for hot loop shorting.
*
* @private
* @param {Function} func The function to modify.
* @param {Function} string The `toString` result.
* @returns {Function} Returns `func`.
*/
var baseSetToString = !defineProperty ? identity : function(func, string) {
return defineProperty(func, 'toString', {
'configurable': true,
'enumerable': false,
'value': constant(string),
'writable': true
});
};
/**
* The base implementation of `_.shuffle`.
*
* @private
* @param {Array|Object} collection The collection to shuffle.
* @returns {Array} Returns the new shuffled array.
*/
function baseShuffle(collection) {
return shuffleSelf(values(collection));
}
/**
* The base implementation of `_.slice` without an iteratee call guard.
*
* @private
* @param {Array} array The array to slice.
* @param {number} [start=0] The start position.
* @param {number} [end=array.length] The end position.
* @returns {Array} Returns the slice of `array`.
*/
function baseSlice(array, start, end) {
var index = -1,
length = array.length;
if (start < 0) {
start = -start > length ? 0 : (length + start);
}
end = end > length ? length : end;
if (end < 0) {
end += length;
}
length = start > end ? 0 : ((end - start) >>> 0);
start >>>= 0;
var result = Array(length);
while (++index < length) {
result[index] = array[index + start];
}
return result;
}
/**
* The base implementation of `_.some` without support for iteratee shorthands.
*
* @private
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} predicate The function invoked per iteration.
* @returns {boolean} Returns `true` if any element passes the predicate check,
* else `false`.
*/
function baseSome(collection, predicate) {
var result;
baseEach(collection, function(value, index, collection) {
result = predicate(value, index, collection);
return !result;
});
return !!result;
}
/**
* The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which
* performs a binary search of `array` to determine the index at which `value`
* should be inserted into `array` in order to maintain its sort order.
*
* @private
* @param {Array} array The sorted array to inspect.
* @param {*} value The value to evaluate.
* @param {boolean} [retHighest] Specify returning the highest qualified index.
* @returns {number} Returns the index at which `value` should be inserted
* into `array`.
*/
function baseSortedIndex(array, value, retHighest) {
var low = 0,
high = array == null ? low : array.length;
if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {
while (low < high) {
var mid = (low + high) >>> 1,
computed = array[mid];
if (computed !== null && !isSymbol(computed) &&
(retHighest ? (computed <= value) : (computed < value))) {
low = mid + 1;
} else {
high = mid;
}
}
return high;
}
return baseSortedIndexBy(array, value, identity, retHighest);
}
/**
* The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`
* which invokes `iteratee` for `value` and each element of `array` to compute
* their sort ranking. The iteratee is invoked with one argument; (value).
*
* @private
* @param {Array} array The sorted array to inspect.
* @param {*} value The value to evaluate.
* @param {Function} iteratee The iteratee invoked per element.
* @param {boolean} [retHighest] Specify returning the highest qualified index.
* @returns {number} Returns the index at which `value` should be inserted
* into `array`.
*/
function baseSortedIndexBy(array, value, iteratee, retHighest) {
value = iteratee(value);
var low = 0,
high = array == null ? 0 : array.length,
valIsNaN = value !== value,
valIsNull = value === null,
valIsSymbol = isSymbol(value),
valIsUndefined = value === undefined;
while (low < high) {
var mid = nativeFloor((low + high) / 2),
computed = iteratee(array[mid]),
othIsDefined = computed !== undefined,
othIsNull = computed === null,
othIsReflexive = computed === computed,
othIsSymbol = isSymbol(computed);
if (valIsNaN) {
var setLow = retHighest || othIsReflexive;
} else if (valIsUndefined) {
setLow = othIsReflexive && (retHighest || othIsDefined);
} else if (valIsNull) {
setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);
} else if (valIsSymbol) {
setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);
} else if (othIsNull || othIsSymbol) {
setLow = false;
} else {
setLow = retHighest ? (computed <= value) : (computed < value);
}
if (setLow) {
low = mid + 1;
} else {
high = mid;
}
}
return nativeMin(high, MAX_ARRAY_INDEX);
}
/**
* The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without
* support for iteratee shorthands.
*
* @private
* @param {Array} array The array to inspect.
* @param {Function} [iteratee] The iteratee invoked per element.
* @returns {Array} Returns the new duplicate free array.
*/
function baseSortedUniq(array, iteratee) {
var index = -1,
length = array.length,
resIndex = 0,
result = [];
while (++index < length) {
var value = array[index],
computed = iteratee ? iteratee(value) : value;
if (!index || !eq(computed, seen)) {
var seen = computed;
result[resIndex++] = value === 0 ? 0 : value;
}
}
return result;
}
/**
* The base implementation of `_.toNumber` which doesn't ensure correct
* conversions of binary, hexadecimal, or octal string values.
*
* @private
* @param {*} value The value to process.
* @returns {number} Returns the number.
*/
function baseToNumber(value) {
if (typeof value == 'number') {
return value;
}
if (isSymbol(value)) {
return NAN;
}
return +value;
}
/**
* The base implementation of `_.toString` which doesn't convert nullish
* values to empty strings.
*
* @private
* @param {*} value The value to process.
* @returns {string} Returns the string.
*/
function baseToString(value) {
// Exit early for strings to avoid a performance hit in some environments.
if (typeof value == 'string') {
return value;
}
if (isArray(value)) {
// Recursively convert values (susceptible to call stack limits).
return arrayMap(value, baseToString) + '';
}
if (isSymbol(value)) {
return symbolToString ? symbolToString.call(value) : '';
}
var result = (value + '');
return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
}
/**
* The base implementation of `_.uniqBy` without support for iteratee shorthands.
*
* @private
* @param {Array} array The array to inspect.
* @param {Function} [iteratee] The iteratee invoked per element.
* @param {Function} [comparator] The comparator invoked per element.
* @returns {Array} Returns the new duplicate free array.
*/
function baseUniq(array, iteratee, comparator) {
var index = -1,
includes = arrayIncludes,
length = array.length,
isCommon = true,
result = [],
seen = result;
if (comparator) {
isCommon = false;
includes = arrayIncludesWith;
}
else if (length >= LARGE_ARRAY_SIZE) {
var set = iteratee ? null : createSet(array);
if (set) {
return setToArray(set);
}
isCommon = false;
includes = cacheHas;
seen = new SetCache;
}
else {
seen = iteratee ? [] : result;
}
outer:
while (++index < length) {
var value = array[index],
computed = iteratee ? iteratee(value) : value;
value = (comparator || value !== 0) ? value : 0;
if (isCommon && computed === computed) {
var seenIndex = seen.length;
while (seenIndex--) {
if (seen[seenIndex] === computed) {
continue outer;
}
}
if (iteratee) {
seen.push(computed);
}
result.push(value);
}
else if (!includes(seen, computed, comparator)) {
if (seen !== result) {
seen.push(computed);
}
result.push(value);
}
}
return result;
}
/**
* The base implementation of `_.unset`.
*
* @private
* @param {Object} object The object to modify.
* @param {Array|string} path The property path to unset.
* @returns {boolean} Returns `true` if the property is deleted, else `false`.
*/
function baseUnset(object, path) {
path = castPath(path, object);
object = parent(object, path);
return object == null || delete object[toKey(last(path))];
}
/**
* The base implementation of `_.update`.
*
* @private
* @param {Object} object The object to modify.
* @param {Array|string} path The path of the property to update.
* @param {Function} updater The function to produce the updated value.
* @param {Function} [customizer] The function to customize path creation.
* @returns {Object} Returns `object`.
*/
function baseUpdate(object, path, updater, customizer) {
return baseSet(object, path, updater(baseGet(object, path)), customizer);
}
/**
* The base implementation of methods like `_.dropWhile` and `_.takeWhile`
* without support for iteratee shorthands.
*
* @private
* @param {Array} array The array to query.
* @param {Function} predicate The function invoked per iteration.
* @param {boolean} [isDrop] Specify dropping elements instead of taking them.
* @param {boolean} [fromRight] Specify iterating from right to left.
* @returns {Array} Returns the slice of `array`.
*/
function baseWhile(array, predicate, isDrop, fromRight) {
var length = array.length,
index = fromRight ? length : -1;
while ((fromRight ? index-- : ++index < length) &&
predicate(array[index], index, array)) {}
return isDrop
? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))
: baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));
}
/**
* The base implementation of `wrapperValue` which returns the result of
* performing a sequence of actions on the unwrapped `value`, where each
* successive action is supplied the return value of the previous.
*
* @private
* @param {*} value The unwrapped value.
* @param {Array} actions Actions to perform to resolve the unwrapped value.
* @returns {*} Returns the resolved value.
*/
function baseWrapperValue(value, actions) {
var result = value;
if (result instanceof LazyWrapper) {
result = result.value();
}
return arrayReduce(actions, function(result, action) {
return action.func.apply(action.thisArg, arrayPush([result], action.args));
}, result);
}
/**
* The base implementation of methods like `_.xor`, without support for
* iteratee shorthands, that accepts an array of arrays to inspect.
*
* @private
* @param {Array} arrays The arrays to inspect.
* @param {Function} [iteratee] The iteratee invoked per element.
* @param {Function} [comparator] The comparator invoked per element.
* @returns {Array} Returns the new array of values.
*/
function baseXor(arrays, iteratee, comparator) {
var length = arrays.length;
if (length < 2) {
return length ? baseUniq(arrays[0]) : [];
}
var index = -1,
result = Array(length);
while (++index < length) {
var array = arrays[index],
othIndex = -1;
while (++othIndex < length) {
if (othIndex != index) {
result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);
}
}
}
return baseUniq(baseFlatten(result, 1), iteratee, comparator);
}
/**
* This base implementation of `_.zipObject` which assigns values using `assignFunc`.
*
* @private
* @param {Array} props The property identifiers.
* @param {Array} values The property values.
* @param {Function} assignFunc The function to assign values.
* @returns {Object} Returns the new object.
*/
function baseZipObject(props, values, assignFunc) {
var index = -1,
length = props.length,
valsLength = values.length,
result = {};
while (++index < length) {
var value = index < valsLength ? values[index] : undefined;
assignFunc(result, props[index], value);
}
return result;
}
/**
* Casts `value` to an empty array if it's not an array like object.
*
* @private
* @param {*} value The value to inspect.
* @returns {Array|Object} Returns the cast array-like object.
*/
function castArrayLikeObject(value) {
return isArrayLikeObject(value) ? value : [];
}
/**
* Casts `value` to `identity` if it's not a function.
*
* @private
* @param {*} value The value to inspect.
* @returns {Function} Returns cast function.
*/
function castFunction(value) {
return typeof value == 'function' ? value : identity;
}
/**
* Casts `value` to a path array if it's not one.
*
* @private
* @param {*} value The value to inspect.
* @param {Object} [object] The object to query keys on.
* @returns {Array} Returns the cast property path array.
*/
function castPath(value, object) {
if (isArray(value)) {
return value;
}
return isKey(value, object) ? [value] : stringToPath(toString(value));
}
/**
* A `baseRest` alias which can be replaced with `identity` by module
* replacement plugins.
*
* @private
* @type {Function}
* @param {Function} func The function to apply a rest parameter to.
* @returns {Function} Returns the new function.
*/
var castRest = baseRest;
/**
* Casts `array` to a slice if it's needed.
*
* @private
* @param {Array} array The array to inspect.
* @param {number} start The start position.
* @param {number} [end=array.length] The end position.
* @returns {Array} Returns the cast slice.
*/
function castSlice(array, start, end) {
var length = array.length;
end = end === undefined ? length : end;
return (!start && end >= length) ? array : baseSlice(array, start, end);
}
/**
* A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).
*
* @private
* @param {number|Object} id The timer id or timeout object of the timer to clear.
*/
var clearTimeout = ctxClearTimeout || function(id) {
return root.clearTimeout(id);
};
/**
* Creates a clone of `buffer`.
*
* @private
* @param {Buffer} buffer The buffer to clone.
* @param {boolean} [isDeep] Specify a deep clone.
* @returns {Buffer} Returns the cloned buffer.
*/
function cloneBuffer(buffer, isDeep) {
if (isDeep) {
return buffer.slice();
}
var length = buffer.length,
result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);
buffer.copy(result);
return result;
}
/**
* Creates a clone of `arrayBuffer`.
*
* @private
* @param {ArrayBuffer} arrayBuffer The array buffer to clone.
* @returns {ArrayBuffer} Returns the cloned array buffer.
*/
function cloneArrayBuffer(arrayBuffer) {
var result = new arrayBuffer.constructor(arrayBuffer.byteLength);
new Uint8Array(result).set(new Uint8Array(arrayBuffer));
return result;
}
/**
* Creates a clone of `dataView`.
*
* @private
* @param {Object} dataView The data view to clone.
* @param {boolean} [isDeep] Specify a deep clone.
* @returns {Object} Returns the cloned data view.
*/
function cloneDataView(dataView, isDeep) {
var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;
return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);
}
/**
* Creates a clone of `regexp`.
*
* @private
* @param {Object} regexp The regexp to clone.
* @returns {Object} Returns the cloned regexp.
*/
function cloneRegExp(regexp) {
var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));
result.lastIndex = regexp.lastIndex;
return result;
}
/**
* Creates a clone of the `symbol` object.
*
* @private
* @param {Object} symbol The symbol object to clone.
* @returns {Object} Returns the cloned symbol object.
*/
function cloneSymbol(symbol) {
return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};
}
/**
* Creates a clone of `typedArray`.
*
* @private
* @param {Object} typedArray The typed array to clone.
* @param {boolean} [isDeep] Specify a deep clone.
* @returns {Object} Returns the cloned typed array.
*/
function cloneTypedArray(typedArray, isDeep) {
var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;
return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);
}
/**
* Compares values to sort them in ascending order.
*
* @private
* @param {*} value The value to compare.
* @param {*} other The other value to compare.
* @returns {number} Returns the sort order indicator for `value`.
*/
function compareAscending(value, other) {
if (value !== other) {
var valIsDefined = value !== undefined,
valIsNull = value === null,
valIsReflexive = value === value,
valIsSymbol = isSymbol(value);
var othIsDefined = other !== undefined,
othIsNull = other === null,
othIsReflexive = other === other,
othIsSymbol = isSymbol(other);
if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||
(valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||
(valIsNull && othIsDefined && othIsReflexive) ||
(!valIsDefined && othIsReflexive) ||
!valIsReflexive) {
return 1;
}
if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||
(othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||
(othIsNull && valIsDefined && valIsReflexive) ||
(!othIsDefined && valIsReflexive) ||
!othIsReflexive) {
return -1;
}
}
return 0;
}
/**
* Used by `_.orderBy` to compare multiple properties of a value to another
* and stable sort them.
*
* If `orders` is unspecified, all values are sorted in ascending order. Otherwise,
* specify an order of "desc" for descending or "asc" for ascending sort order
* of corresponding values.
*
* @private
* @param {Object} object The object to compare.
* @param {Object} other The other object to compare.
* @param {boolean[]|string[]} orders The order to sort by for each property.
* @returns {number} Returns the sort order indicator for `object`.
*/
function compareMultiple(object, other, orders) {
var index = -1,
objCriteria = object.criteria,
othCriteria = other.criteria,
length = objCriteria.length,
ordersLength = orders.length;
while (++index < length) {
var result = compareAscending(objCriteria[index], othCriteria[index]);
if (result) {
if (index >= ordersLength) {
return result;
}
var order = orders[index];
return result * (order == 'desc' ? -1 : 1);
}
}
// Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications
// that causes it, under certain circumstances, to provide the same value for
// `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247
// for more details.
//
// This also ensures a stable sort in V8 and other engines.
// See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.
return object.index - other.index;
}
/**
* Creates an array that is the composition of partially applied arguments,
* placeholders, and provided arguments into a single array of arguments.
*
* @private
* @param {Array} args The provided arguments.
* @param {Array} partials The arguments to prepend to those provided.
* @param {Array} holders The `partials` placeholder indexes.
* @params {boolean} [isCurried] Specify composing for a curried function.
* @returns {Array} Returns the new array of composed arguments.
*/
function composeArgs(args, partials, holders, isCurried) {
var argsIndex = -1,
argsLength = args.length,
holdersLength = holders.length,
leftIndex = -1,
leftLength = partials.length,
rangeLength = nativeMax(argsLength - holdersLength, 0),
result = Array(leftLength + rangeLength),
isUncurried = !isCurried;
while (++leftIndex < leftLength) {
result[leftIndex] = partials[leftIndex];
}
while (++argsIndex < holdersLength) {
if (isUncurried || argsIndex < argsLength) {
result[holders[argsIndex]] = args[argsIndex];
}
}
while (rangeLength--) {
result[leftIndex++] = args[argsIndex++];
}
return result;
}
/**
* This function is like `composeArgs` except that the arguments composition
* is tailored for `_.partialRight`.
*
* @private
* @param {Array} args The provided arguments.
* @param {Array} partials The arguments to append to those provided.
* @param {Array} holders The `partials` placeholder indexes.
* @params {boolean} [isCurried] Specify composing for a curried function.
* @returns {Array} Returns the new array of composed arguments.
*/
function composeArgsRight(args, partials, holders, isCurried) {
var argsIndex = -1,
argsLength = args.length,
holdersIndex = -1,
holdersLength = holders.length,
rightIndex = -1,
rightLength = partials.length,
rangeLength = nativeMax(argsLength - holdersLength, 0),
result = Array(rangeLength + rightLength),
isUncurried = !isCurried;
while (++argsIndex < rangeLength) {
result[argsIndex] = args[argsIndex];
}
var offset = argsIndex;
while (++rightIndex < rightLength) {
result[offset + rightIndex] = partials[rightIndex];
}
while (++holdersIndex < holdersLength) {
if (isUncurried || argsIndex < argsLength) {
result[offset + holders[holdersIndex]] = args[argsIndex++];
}
}
return result;
}
/**
* Copies the values of `source` to `array`.
*
* @private
* @param {Array} source The array to copy values from.
* @param {Array} [array=[]] The array to copy values to.
* @returns {Array} Returns `array`.
*/
function copyArray(source, array) {
var index = -1,
length = source.length;
array || (array = Array(length));
while (++index < length) {
array[index] = source[index];
}
return array;
}
/**
* Copies properties of `source` to `object`.
*
* @private
* @param {Object} source The object to copy properties from.
* @param {Array} props The property identifiers to copy.
* @param {Object} [object={}] The object to copy properties to.
* @param {Function} [customizer] The function to customize copied values.
* @returns {Object} Returns `object`.
*/
function copyObject(source, props, object, customizer) {
var isNew = !object;
object || (object = {});
var index = -1,
length = props.length;
while (++index < length) {
var key = props[index];
var newValue = customizer
? customizer(object[key], source[key], key, object, source)
: undefined;
if (newValue === undefined) {
newValue = source[key];
}
if (isNew) {
baseAssignValue(object, key, newValue);
} else {
assignValue(object, key, newValue);
}
}
return object;
}
/**
* Copies own symbols of `source` to `object`.
*
* @private
* @param {Object} source The object to copy symbols from.
* @param {Object} [object={}] The object to copy symbols to.
* @returns {Object} Returns `object`.
*/
function copySymbols(source, object) {
return copyObject(source, getSymbols(source), object);
}
/**
* Copies own and inherited symbols of `source` to `object`.
*
* @private
* @param {Object} source The object to copy symbols from.
* @param {Object} [object={}] The object to copy symbols to.
* @returns {Object} Returns `object`.
*/
function copySymbolsIn(source, object) {
return copyObject(source, getSymbolsIn(source), object);
}
/**
* Creates a function like `_.groupBy`.
*
* @private
* @param {Function} setter The function to set accumulator values.
* @param {Function} [initializer] The accumulator object initializer.
* @returns {Function} Returns the new aggregator function.
*/
function createAggregator(setter, initializer) {
return function(collection, iteratee) {
var func = isArray(collection) ? arrayAggregator : baseAggregator,
accumulator = initializer ? initializer() : {};
return func(collection, setter, getIteratee(iteratee, 2), accumulator);
};
}
/**
* Creates a function like `_.assign`.
*
* @private
* @param {Function} assigner The function to assign values.
* @returns {Function} Returns the new assigner function.
*/
function createAssigner(assigner) {
return baseRest(function(object, sources) {
var index = -1,
length = sources.length,
customizer = length > 1 ? sources[length - 1] : undefined,
guard = length > 2 ? sources[2] : undefined;
customizer = (assigner.length > 3 && typeof customizer == 'function')
? (length--, customizer)
: undefined;
if (guard && isIterateeCall(sources[0], sources[1], guard)) {
customizer = length < 3 ? undefined : customizer;
length = 1;
}
object = Object(object);
while (++index < length) {
var source = sources[index];
if (source) {
assigner(object, source, index, customizer);
}
}
return object;
});
}
/**
* Creates a `baseEach` or `baseEachRight` function.
*
* @private
* @param {Function} eachFunc The function to iterate over a collection.
* @param {boolean} [fromRight] Specify iterating from right to left.
* @returns {Function} Returns the new base function.
*/
function createBaseEach(eachFunc, fromRight) {
return function(collection, iteratee) {
if (collection == null) {
return collection;
}
if (!isArrayLike(collection)) {
return eachFunc(collection, iteratee);
}
var length = collection.length,
index = fromRight ? length : -1,
iterable = Object(collection);
while ((fromRight ? index-- : ++index < length)) {
if (iteratee(iterable[index], index, iterable) === false) {
break;
}
}
return collection;
};
}
/**
* Creates a base function for methods like `_.forIn` and `_.forOwn`.
*
* @private
* @param {boolean} [fromRight] Specify iterating from right to left.
* @returns {Function} Returns the new base function.
*/
function createBaseFor(fromRight) {
return function(object, iteratee, keysFunc) {
var index = -1,
iterable = Object(object),
props = keysFunc(object),
length = props.length;
while (length--) {
var key = props[fromRight ? length : ++index];
if (iteratee(iterable[key], key, iterable) === false) {
break;
}
}
return object;
};
}
/**
* Creates a function that wraps `func` to invoke it with the optional `this`
* binding of `thisArg`.
*
* @private
* @param {Function} func The function to wrap.
* @param {number} bitmask The bitmask flags. See `createWrap` for more details.
* @param {*} [thisArg] The `this` binding of `func`.
* @returns {Function} Returns the new wrapped function.
*/
function createBind(func, bitmask, thisArg) {
var isBind = bitmask & WRAP_BIND_FLAG,
Ctor = createCtor(func);
function wrapper() {
var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
return fn.apply(isBind ? thisArg : this, arguments);
}
return wrapper;
}
/**
* Creates a function like `_.lowerFirst`.
*
* @private
* @param {string} methodName The name of the `String` case method to use.
* @returns {Function} Returns the new case function.
*/
function createCaseFirst(methodName) {
return function(string) {
string = toString(string);
var strSymbols = hasUnicode(string)
? stringToArray(string)
: undefined;
var chr = strSymbols
? strSymbols[0]
: string.charAt(0);
var trailing = strSymbols
? castSlice(strSymbols, 1).join('')
: string.slice(1);
return chr[methodName]() + trailing;
};
}
/**
* Creates a function like `_.camelCase`.
*
* @private
* @param {Function} callback The function to combine each word.
* @returns {Function} Returns the new compounder function.
*/
function createCompounder(callback) {
return function(string) {
return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');
};
}
/**
* Creates a function that produces an instance of `Ctor` regardless of
* whether it was invoked as part of a `new` expression or by `call` or `apply`.
*
* @private
* @param {Function} Ctor The constructor to wrap.
* @returns {Function} Returns the new wrapped function.
*/
function createCtor(Ctor) {
return function() {
// Use a `switch` statement to work with class constructors. See
// http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist
// for more details.
var args = arguments;
switch (args.length) {
case 0: return new Ctor;
case 1: return new Ctor(args[0]);
case 2: return new Ctor(args[0], args[1]);
case 3: return new Ctor(args[0], args[1], args[2]);
case 4: return new Ctor(args[0], args[1], args[2], args[3]);
case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]);
case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);
case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);
}
var thisBinding = baseCreate(Ctor.prototype),
result = Ctor.apply(thisBinding, args);
// Mimic the constructor's `return` behavior.
// See https://es5.github.io/#x13.2.2 for more details.
return isObject(result) ? result : thisBinding;
};
}
/**
* Creates a function that wraps `func` to enable currying.
*
* @private
* @param {Function} func The function to wrap.
* @param {number} bitmask The bitmask flags. See `createWrap` for more details.
* @param {number} arity The arity of `func`.
* @returns {Function} Returns the new wrapped function.
*/
function createCurry(func, bitmask, arity) {
var Ctor = createCtor(func);
function wrapper() {
var length = arguments.length,
args = Array(length),
index = length,
placeholder = getHolder(wrapper);
while (index--) {
args[index] = arguments[index];
}
var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)
? []
: replaceHolders(args, placeholder);
length -= holders.length;
if (length < arity) {
return createRecurry(
func, bitmask, createHybrid, wrapper.placeholder, undefined,
args, holders, undefined, undefined, arity - length);
}
var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
return apply(fn, this, args);
}
return wrapper;
}
/**
* Creates a `_.find` or `_.findLast` function.
*
* @private
* @param {Function} findIndexFunc The function to find the collection index.
* @returns {Function} Returns the new find function.
*/
function createFind(findIndexFunc) {
return function(collection, predicate, fromIndex) {
var iterable = Object(collection);
if (!isArrayLike(collection)) {
var iteratee = getIteratee(predicate, 3);
collection = keys(collection);
predicate = function(key) { return iteratee(iterable[key], key, iterable); };
}
var index = findIndexFunc(collection, predicate, fromIndex);
return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;
};
}
/**
* Creates a `_.flow` or `_.flowRight` function.
*
* @private
* @param {boolean} [fromRight] Specify iterating from right to left.
* @returns {Function} Returns the new flow function.
*/
function createFlow(fromRight) {
return flatRest(function(funcs) {
var length = funcs.length,
index = length,
prereq = LodashWrapper.prototype.thru;
if (fromRight) {
funcs.reverse();
}
while (index--) {
var func = funcs[index];
if (typeof func != 'function') {
throw new TypeError(FUNC_ERROR_TEXT);
}
if (prereq && !wrapper && getFuncName(func) == 'wrapper') {
var wrapper = new LodashWrapper([], true);
}
}
index = wrapper ? index : length;
while (++index < length) {
func = funcs[index];
var funcName = getFuncName(func),
data = funcName == 'wrapper' ? getData(func) : undefined;
if (data && isLaziable(data[0]) &&
data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&
!data[4].length && data[9] == 1
) {
wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);
} else {
wrapper = (func.length == 1 && isLaziable(func))
? wrapper[funcName]()
: wrapper.thru(func);
}
}
return function() {
var args = arguments,
value = args[0];
if (wrapper && args.length == 1 && isArray(value)) {
return wrapper.plant(value).value();
}
var index = 0,
result = length ? funcs[index].apply(this, args) : value;
while (++index < length) {
result = funcs[index].call(this, result);
}
return result;
};
});
}
/**
* Creates a function that wraps `func` to invoke it with optional `this`
* binding of `thisArg`, partial application, and currying.
*
* @private
* @param {Function|string} func The function or method name to wrap.
* @param {number} bitmask The bitmask flags. See `createWrap` for more details.
* @param {*} [thisArg] The `this` binding of `func`.
* @param {Array} [partials] The arguments to prepend to those provided to
* the new function.
* @param {Array} [holders] The `partials` placeholder indexes.
* @param {Array} [partialsRight] The arguments to append to those provided
* to the new function.
* @param {Array} [holdersRight] The `partialsRight` placeholder indexes.
* @param {Array} [argPos] The argument positions of the new function.
* @param {number} [ary] The arity cap of `func`.
* @param {number} [arity] The arity of `func`.
* @returns {Function} Returns the new wrapped function.
*/
function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {
var isAry = bitmask & WRAP_ARY_FLAG,
isBind = bitmask & WRAP_BIND_FLAG,
isBindKey = bitmask & WRAP_BIND_KEY_FLAG,
isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),
isFlip = bitmask & WRAP_FLIP_FLAG,
Ctor = isBindKey ? undefined : createCtor(func);
function wrapper() {
var length = arguments.length,
args = Array(length),
index = length;
while (index--) {
args[index] = arguments[index];
}
if (isCurried) {
var placeholder = getHolder(wrapper),
holdersCount = countHolders(args, placeholder);
}
if (partials) {
args = composeArgs(args, partials, holders, isCurried);
}
if (partialsRight) {
args = composeArgsRight(args, partialsRight, holdersRight, isCurried);
}
length -= holdersCount;
if (isCurried && length < arity) {
var newHolders = replaceHolders(args, placeholder);
return createRecurry(
func, bitmask, createHybrid, wrapper.placeholder, thisArg,
args, newHolders, argPos, ary, arity - length
);
}
var thisBinding = isBind ? thisArg : this,
fn = isBindKey ? thisBinding[func] : func;
length = args.length;
if (argPos) {
args = reorder(args, argPos);
} else if (isFlip && length > 1) {
args.reverse();
}
if (isAry && ary < length) {
args.length = ary;
}
if (this && this !== root && this instanceof wrapper) {
fn = Ctor || createCtor(fn);
}
return fn.apply(thisBinding, args);
}
return wrapper;
}
/**
* Creates a function like `_.invertBy`.
*
* @private
* @param {Function} setter The function to set accumulator values.
* @param {Function} toIteratee The function to resolve iteratees.
* @returns {Function} Returns the new inverter function.
*/
function createInverter(setter, toIteratee) {
return function(object, iteratee) {
return baseInverter(object, setter, toIteratee(iteratee), {});
};
}
/**
* Creates a function that performs a mathematical operation on two values.
*
* @private
* @param {Function} operator The function to perform the operation.
* @param {number} [defaultValue] The value used for `undefined` arguments.
* @returns {Function} Returns the new mathematical operation function.
*/
function createMathOperation(operator, defaultValue) {
return function(value, other) {
var result;
if (value === undefined && other === undefined) {
return defaultValue;
}
if (value !== undefined) {
result = value;
}
if (other !== undefined) {
if (result === undefined) {
return other;
}
if (typeof value == 'string' || typeof other == 'string') {
value = baseToString(value);
other = baseToString(other);
} else {
value = baseToNumber(value);
other = baseToNumber(other);
}
result = operator(value, other);
}
return result;
};
}
/**
* Creates a function like `_.over`.
*
* @private
* @param {Function} arrayFunc The function to iterate over iteratees.
* @returns {Function} Returns the new over function.
*/
function createOver(arrayFunc) {
return flatRest(function(iteratees) {
iteratees = arrayMap(iteratees, baseUnary(getIteratee()));
return baseRest(function(args) {
var thisArg = this;
return arrayFunc(iteratees, function(iteratee) {
return apply(iteratee, thisArg, args);
});
});
});
}
/**
* Creates the padding for `string` based on `length`. The `chars` string
* is truncated if the number of characters exceeds `length`.
*
* @private
* @param {number} length The padding length.
* @param {string} [chars=' '] The string used as padding.
* @returns {string} Returns the padding for `string`.
*/
function createPadding(length, chars) {
chars = chars === undefined ? ' ' : baseToString(chars);
var charsLength = chars.length;
if (charsLength < 2) {
return charsLength ? baseRepeat(chars, length) : chars;
}
var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));
return hasUnicode(chars)
? castSlice(stringToArray(result), 0, length).join('')
: result.slice(0, length);
}
/**
* Creates a function that wraps `func` to invoke it with the `this` binding
* of `thisArg` and `partials` prepended to the arguments it receives.
*
* @private
* @param {Function} func The function to wrap.
* @param {number} bitmask The bitmask flags. See `createWrap` for more details.
* @param {*} thisArg The `this` binding of `func`.
* @param {Array} partials The arguments to prepend to those provided to
* the new function.
* @returns {Function} Returns the new wrapped function.
*/
function createPartial(func, bitmask, thisArg, partials) {
var isBind = bitmask & WRAP_BIND_FLAG,
Ctor = createCtor(func);
function wrapper() {
var argsIndex = -1,
argsLength = arguments.length,
leftIndex = -1,
leftLength = partials.length,
args = Array(leftLength + argsLength),
fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
while (++leftIndex < leftLength) {
args[leftIndex] = partials[leftIndex];
}
while (argsLength--) {
args[leftIndex++] = arguments[++argsIndex];
}
return apply(fn, isBind ? thisArg : this, args);
}
return wrapper;
}
/**
* Creates a `_.range` or `_.rangeRight` function.
*
* @private
* @param {boolean} [fromRight] Specify iterating from right to left.
* @returns {Function} Returns the new range function.
*/
function createRange(fromRight) {
return function(start, end, step) {
if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {
end = step = undefined;
}
// Ensure the sign of `-0` is preserved.
start = toFinite(start);
if (end === undefined) {
end = start;
start = 0;
} else {
end = toFinite(end);
}
step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);
return baseRange(start, end, step, fromRight);
};
}
/**
* Creates a function that performs a relational operation on two values.
*
* @private
* @param {Function} operator The function to perform the operation.
* @returns {Function} Returns the new relational operation function.
*/
function createRelationalOperation(operator) {
return function(value, other) {
if (!(typeof value == 'string' && typeof other == 'string')) {
value = toNumber(value);
other = toNumber(other);
}
return operator(value, other);
};
}
/**
* Creates a function that wraps `func` to continue currying.
*
* @private
* @param {Function} func The function to wrap.
* @param {number} bitmask The bitmask flags. See `createWrap` for more details.
* @param {Function} wrapFunc The function to create the `func` wrapper.
* @param {*} placeholder The placeholder value.
* @param {*} [thisArg] The `this` binding of `func`.
* @param {Array} [partials] The arguments to prepend to those provided to
* the new function.
* @param {Array} [holders] The `partials` placeholder indexes.
* @param {Array} [argPos] The argument positions of the new function.
* @param {number} [ary] The arity cap of `func`.
* @param {number} [arity] The arity of `func`.
* @returns {Function} Returns the new wrapped function.
*/
function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {
var isCurry = bitmask & WRAP_CURRY_FLAG,
newHolders = isCurry ? holders : undefined,
newHoldersRight = isCurry ? undefined : holders,
newPartials = isCurry ? partials : undefined,
newPartialsRight = isCurry ? undefined : partials;
bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG);
bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);
if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {
bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);
}
var newData = [
func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,
newHoldersRight, argPos, ary, arity
];
var result = wrapFunc.apply(undefined, newData);
if (isLaziable(func)) {
setData(result, newData);
}
result.placeholder = placeholder;
return setWrapToString(result, func, bitmask);
}
/**
* Creates a function like `_.round`.
*
* @private
* @param {string} methodName The name of the `Math` method to use when rounding.
* @returns {Function} Returns the new round function.
*/
function createRound(methodName) {
var func = Math[methodName];
return function(number, precision) {
number = toNumber(number);
precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);
if (precision) {
// Shift with exponential notation to avoid floating-point issues.
// See [MDN](https://mdn.io/round#Examples) for more details.
var pair = (toString(number) + 'e').split('e'),
value = func(pair[0] + 'e' + (+pair[1] + precision));
pair = (toString(value) + 'e').split('e');
return +(pair[0] + 'e' + (+pair[1] - precision));
}
return func(number);
};
}
/**
* Creates a set object of `values`.
*
* @private
* @param {Array} values The values to add to the set.
* @returns {Object} Returns the new set.
*/
var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {
return new Set(values);
};
/**
* Creates a `_.toPairs` or `_.toPairsIn` function.
*
* @private
* @param {Function} keysFunc The function to get the keys of a given object.
* @returns {Function} Returns the new pairs function.
*/
function createToPairs(keysFunc) {
return function(object) {
var tag = getTag(object);
if (tag == mapTag) {
return mapToArray(object);
}
if (tag == setTag) {
return setToPairs(object);
}
return baseToPairs(object, keysFunc(object));
};
}
/**
* Creates a function that either curries or invokes `func` with optional
* `this` binding and partially applied arguments.
*
* @private
* @param {Function|string} func The function or method name to wrap.
* @param {number} bitmask The bitmask flags.
* 1 - `_.bind`
* 2 - `_.bindKey`
* 4 - `_.curry` or `_.curryRight` of a bound function
* 8 - `_.curry`
* 16 - `_.curryRight`
* 32 - `_.partial`
* 64 - `_.partialRight`
* 128 - `_.rearg`
* 256 - `_.ary`
* 512 - `_.flip`
* @param {*} [thisArg] The `this` binding of `func`.
* @param {Array} [partials] The arguments to be partially applied.
* @param {Array} [holders] The `partials` placeholder indexes.
* @param {Array} [argPos] The argument positions of the new function.
* @param {number} [ary] The arity cap of `func`.
* @param {number} [arity] The arity of `func`.
* @returns {Function} Returns the new wrapped function.
*/
function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;
if (!isBindKey && typeof func != 'function') {
throw new TypeError(FUNC_ERROR_TEXT);
}
var length = partials ? partials.length : 0;
if (!length) {
bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);
partials = holders = undefined;
}
ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);
arity = arity === undefined ? arity : toInteger(arity);
length -= holders ? holders.length : 0;
if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {
var partialsRight = partials,
holdersRight = holders;
partials = holders = undefined;
}
var data = isBindKey ? undefined : getData(func);
var newData = [
func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,
argPos, ary, arity
];
if (data) {
mergeData(newData, data);
}
func = newData[0];
bitmask = newData[1];
thisArg = newData[2];
partials = newData[3];
holders = newData[4];
arity = newData[9] = newData[9] === undefined
? (isBindKey ? 0 : func.length)
: nativeMax(newData[9] - length, 0);
if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {
bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);
}
if (!bitmask || bitmask == WRAP_BIND_FLAG) {
var result = createBind(func, bitmask, thisArg);
} else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {
result = createCurry(func, bitmask, arity);
} else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {
result = createPartial(func, bitmask, thisArg, partials);
} else {
result = createHybrid.apply(undefined, newData);
}
var setter = data ? baseSetData : setData;
return setWrapToString(setter(result, newData), func, bitmask);
}
/**
* Used by `_.defaults` to customize its `_.assignIn` use to assign properties
* of source objects to the destination object for all destination properties
* that resolve to `undefined`.
*
* @private
* @param {*} objValue The destination value.
* @param {*} srcValue The source value.
* @param {string} key The key of the property to assign.
* @param {Object} object The parent object of `objValue`.
* @returns {*} Returns the value to assign.
*/
function customDefaultsAssignIn(objValue, srcValue, key, object) {
if (objValue === undefined ||
(eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {
return srcValue;
}
return objValue;
}
/**
* Used by `_.defaultsDeep` to customize its `_.merge` use to merge source
* objects into destination objects that are passed thru.
*
* @private
* @param {*} objValue The destination value.
* @param {*} srcValue The source value.
* @param {string} key The key of the property to merge.
* @param {Object} object The parent object of `objValue`.
* @param {Object} source The parent object of `srcValue`.
* @param {Object} [stack] Tracks traversed source values and their merged
* counterparts.
* @returns {*} Returns the value to assign.
*/
function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {
if (isObject(objValue) && isObject(srcValue)) {
// Recursively merge objects and arrays (susceptible to call stack limits).
stack.set(srcValue, objValue);
baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);
stack['delete'](srcValue);
}
return objValue;
}
/**
* Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain
* objects.
*
* @private
* @param {*} value The value to inspect.
* @param {string} key The key of the property to inspect.
* @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.
*/
function customOmitClone(value) {
return isPlainObject(value) ? undefined : value;
}
/**
* A specialized version of `baseIsEqualDeep` for arrays with support for
* partial deep comparisons.
*
* @private
* @param {Array} array The array to compare.
* @param {Array} other The other array to compare.
* @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
* @param {Function} customizer The function to customize comparisons.
* @param {Function} equalFunc The function to determine equivalents of values.
* @param {Object} stack Tracks traversed `array` and `other` objects.
* @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
*/
function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
arrLength = array.length,
othLength = other.length;
if (arrLength != othLength && !(isPartial && othLength > arrLength)) {
return false;
}
// Assume cyclic values are equal.
var stacked = stack.get(array);
if (stacked && stack.get(other)) {
return stacked == other;
}
var index = -1,
result = true,
seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;
stack.set(array, other);
stack.set(other, array);
// Ignore non-index properties.
while (++index < arrLength) {
var arrValue = array[index],
othValue = other[index];
if (customizer) {
var compared = isPartial
? customizer(othValue, arrValue, index, other, array, stack)
: customizer(arrValue, othValue, index, array, other, stack);
}
if (compared !== undefined) {
if (compared) {
continue;
}
result = false;
break;
}
// Recursively compare arrays (susceptible to call stack limits).
if (seen) {
if (!arraySome(other, function(othValue, othIndex) {
if (!cacheHas(seen, othIndex) &&
(arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
return seen.push(othIndex);
}
})) {
result = false;
break;
}
} else if (!(
arrValue === othValue ||
equalFunc(arrValue, othValue, bitmask, customizer, stack)
)) {
result = false;
break;
}
}
stack['delete'](array);
stack['delete'](other);
return result;
}
/**
* A specialized version of `baseIsEqualDeep` for comparing objects of
* the same `toStringTag`.
*
* **Note:** This function only supports comparing values with tags of
* `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
*
* @private
* @param {Object} object The object to compare.
* @param {Object} other The other object to compare.
* @param {string} tag The `toStringTag` of the objects to compare.
* @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
* @param {Function} customizer The function to customize comparisons.
* @param {Function} equalFunc The function to determine equivalents of values.
* @param {Object} stack Tracks traversed `object` and `other` objects.
* @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
*/
function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {
switch (tag) {
case dataViewTag:
if ((object.byteLength != other.byteLength) ||
(object.byteOffset != other.byteOffset)) {
return false;
}
object = object.buffer;
other = other.buffer;
case arrayBufferTag:
if ((object.byteLength != other.byteLength) ||
!equalFunc(new Uint8Array(object), new Uint8Array(other))) {
return false;
}
return true;
case boolTag:
case dateTag:
case numberTag:
// Coerce booleans to `1` or `0` and dates to milliseconds.
// Invalid dates are coerced to `NaN`.
return eq(+object, +other);
case errorTag:
return object.name == other.name && object.message == other.message;
case regexpTag:
case stringTag:
// Coerce regexes to strings and treat strings, primitives and objects,
// as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring
// for more details.
return object == (other + '');
case mapTag:
var convert = mapToArray;
case setTag:
var isPartial = bitmask & COMPARE_PARTIAL_FLAG;
convert || (convert = setToArray);
if (object.size != other.size && !isPartial) {
return false;
}
// Assume cyclic values are equal.
var stacked = stack.get(object);
if (stacked) {
return stacked == other;
}
bitmask |= COMPARE_UNORDERED_FLAG;
// Recursively compare objects (susceptible to call stack limits).
stack.set(object, other);
var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);
stack['delete'](object);
return result;
case symbolTag:
if (symbolValueOf) {
return symbolValueOf.call(object) == symbolValueOf.call(other);
}
}
return false;
}
/**
* A specialized version of `baseIsEqualDeep` for objects with support for
* partial deep comparisons.
*
* @private
* @param {Object} object The object to compare.
* @param {Object} other The other object to compare.
* @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
* @param {Function} customizer The function to customize comparisons.
* @param {Function} equalFunc The function to determine equivalents of values.
* @param {Object} stack Tracks traversed `object` and `other` objects.
* @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
*/
function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
objProps = getAllKeys(object),
objLength = objProps.length,
othProps = getAllKeys(other),
othLength = othProps.length;
if (objLength != othLength && !isPartial) {
return false;
}
var index = objLength;
while (index--) {
var key = objProps[index];
if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {
return false;
}
}
// Assume cyclic values are equal.
var stacked = stack.get(object);
if (stacked && stack.get(other)) {
return stacked == other;
}
var result = true;
stack.set(object, other);
stack.set(other, object);
var skipCtor = isPartial;
while (++index < objLength) {
key = objProps[index];
var objValue = object[key],
othValue = other[key];
if (customizer) {
var compared = isPartial
? customizer(othValue, objValue, key, other, object, stack)
: customizer(objValue, othValue, key, object, other, stack);
}
// Recursively compare objects (susceptible to call stack limits).
if (!(compared === undefined
? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))
: compared
)) {
result = false;
break;
}
skipCtor || (skipCtor = key == 'constructor');
}
if (result && !skipCtor) {
var objCtor = object.constructor,
othCtor = other.constructor;
// Non `Object` object instances with different constructors are not equal.
if (objCtor != othCtor &&
('constructor' in object && 'constructor' in other) &&
!(typeof objCtor == 'function' && objCtor instanceof objCtor &&
typeof othCtor == 'function' && othCtor instanceof othCtor)) {
result = false;
}
}
stack['delete'](object);
stack['delete'](other);
return result;
}
/**
* A specialized version of `baseRest` which flattens the rest array.
*
* @private
* @param {Function} func The function to apply a rest parameter to.
* @returns {Function} Returns the new function.
*/
function flatRest(func) {
return setToString(overRest(func, undefined, flatten), func + '');
}
/**
* Creates an array of own enumerable property names and symbols of `object`.
*
* @private
* @param {Object} object The object to query.
* @returns {Array} Returns the array of property names and symbols.
*/
function getAllKeys(object) {
return baseGetAllKeys(object, keys, getSymbols);
}
/**
* Creates an array of own and inherited enumerable property names and
* symbols of `object`.
*
* @private
* @param {Object} object The object to query.
* @returns {Array} Returns the array of property names and symbols.
*/
function getAllKeysIn(object) {
return baseGetAllKeys(object, keysIn, getSymbolsIn);
}
/**
* Gets metadata for `func`.
*
* @private
* @param {Function} func The function to query.
* @returns {*} Returns the metadata for `func`.
*/
var getData = !metaMap ? noop : function(func) {
return metaMap.get(func);
};
/**
* Gets the name of `func`.
*
* @private
* @param {Function} func The function to query.
* @returns {string} Returns the function name.
*/
function getFuncName(func) {
var result = (func.name + ''),
array = realNames[result],
length = hasOwnProperty.call(realNames, result) ? array.length : 0;
while (length--) {
var data = array[length],
otherFunc = data.func;
if (otherFunc == null || otherFunc == func) {
return data.name;
}
}
return result;
}
/**
* Gets the argument placeholder value for `func`.
*
* @private
* @param {Function} func The function to inspect.
* @returns {*} Returns the placeholder value.
*/
function getHolder(func) {
var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;
return object.placeholder;
}
/**
* Gets the appropriate "iteratee" function. If `_.iteratee` is customized,
* this function returns the custom method, otherwise it returns `baseIteratee`.
* If arguments are provided, the chosen function is invoked with them and
* its result is returned.
*
* @private
* @param {*} [value] The value to convert to an iteratee.
* @param {number} [arity] The arity of the created iteratee.
* @returns {Function} Returns the chosen function or its result.
*/
function getIteratee() {
var result = lodash.iteratee || iteratee;
result = result === iteratee ? baseIteratee : result;
return arguments.length ? result(arguments[0], arguments[1]) : result;
}
/**
* Gets the data for `map`.
*
* @private
* @param {Object} map The map to query.
* @param {string} key The reference key.
* @returns {*} Returns the map data.
*/
function getMapData(map, key) {
var data = map.__data__;
return isKeyable(key)
? data[typeof key == 'string' ? 'string' : 'hash']
: data.map;
}
/**
* Gets the property names, values, and compare flags of `object`.
*
* @private
* @param {Object} object The object to query.
* @returns {Array} Returns the match data of `object`.
*/
function getMatchData(object) {
var result = keys(object),
length = result.length;
while (length--) {
var key = result[length],
value = object[key];
result[length] = [key, value, isStrictComparable(value)];
}
return result;
}
/**
* Gets the native function at `key` of `object`.
*
* @private
* @param {Object} object The object to query.
* @param {string} key The key of the method to get.
* @returns {*} Returns the function if it's native, else `undefined`.
*/
function getNative(object, key) {
var value = getValue(object, key);
return baseIsNative(value) ? value : undefined;
}
/**
* A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
*
* @private
* @param {*} value The value to query.
* @returns {string} Returns the raw `toStringTag`.
*/
function getRawTag(value) {
var isOwn = hasOwnProperty.call(value, symToStringTag),
tag = value[symToStringTag];
try {
value[symToStringTag] = undefined;
var unmasked = true;
} catch (e) {}
var result = nativeObjectToString.call(value);
if (unmasked) {
if (isOwn) {
value[symToStringTag] = tag;
} else {
delete value[symToStringTag];
}
}
return result;
}
/**
* Creates an array of the own enumerable symbols of `object`.
*
* @private
* @param {Object} object The object to query.
* @returns {Array} Returns the array of symbols.
*/
var getSymbols = !nativeGetSymbols ? stubArray : function(object) {
if (object == null) {
return [];
}
object = Object(object);
return arrayFilter(nativeGetSymbols(object), function(symbol) {
return propertyIsEnumerable.call(object, symbol);
});
};
/**
* Creates an array of the own and inherited enumerable symbols of `object`.
*
* @private
* @param {Object} object The object to query.
* @returns {Array} Returns the array of symbols.
*/
var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {
var result = [];
while (object) {
arrayPush(result, getSymbols(object));
object = getPrototype(object);
}
return result;
};
/**
* Gets the `toStringTag` of `value`.
*
* @private
* @param {*} value The value to query.
* @returns {string} Returns the `toStringTag`.
*/
var getTag = baseGetTag;
// Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.
if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
(Map && getTag(new Map) != mapTag) ||
(Promise && getTag(Promise.resolve()) != promiseTag) ||
(Set && getTag(new Set) != setTag) ||
(WeakMap && getTag(new WeakMap) != weakMapTag)) {
getTag = function(value) {
var result = baseGetTag(value),
Ctor = result == objectTag ? value.constructor : undefined,
ctorString = Ctor ? toSource(Ctor) : '';
if (ctorString) {
switch (ctorString) {
case dataViewCtorString: return dataViewTag;
case mapCtorString: return mapTag;
case promiseCtorString: return promiseTag;
case setCtorString: return setTag;
case weakMapCtorString: return weakMapTag;
}
}
return result;
};
}
/**
* Gets the view, applying any `transforms` to the `start` and `end` positions.
*
* @private
* @param {number} start The start of the view.
* @param {number} end The end of the view.
* @param {Array} transforms The transformations to apply to the view.
* @returns {Object} Returns an object containing the `start` and `end`
* positions of the view.
*/
function getView(start, end, transforms) {
var index = -1,
length = transforms.length;
while (++index < length) {
var data = transforms[index],
size = data.size;
switch (data.type) {
case 'drop': start += size; break;
case 'dropRight': end -= size; break;
case 'take': end = nativeMin(end, start + size); break;
case 'takeRight': start = nativeMax(start, end - size); break;
}
}
return { 'start': start, 'end': end };
}
/**
* Extracts wrapper details from the `source` body comment.
*
* @private
* @param {string} source The source to inspect.
* @returns {Array} Returns the wrapper details.
*/
function getWrapDetails(source) {
var match = source.match(reWrapDetails);
return match ? match[1].split(reSplitDetails) : [];
}
/**
* Checks if `path` exists on `object`.
*
* @private
* @param {Object} object The object to query.
* @param {Array|string} path The path to check.
* @param {Function} hasFunc The function to check properties.
* @returns {boolean} Returns `true` if `path` exists, else `false`.
*/
function hasPath(object, path, hasFunc) {
path = castPath(path, object);
var index = -1,
length = path.length,
result = false;
while (++index < length) {
var key = toKey(path[index]);
if (!(result = object != null && hasFunc(object, key))) {
break;
}
object = object[key];
}
if (result || ++index != length) {
return result;
}
length = object == null ? 0 : object.length;
return !!length && isLength(length) && isIndex(key, length) &&
(isArray(object) || isArguments(object));
}
/**
* Initializes an array clone.
*
* @private
* @param {Array} array The array to clone.
* @returns {Array} Returns the initialized clone.
*/
function initCloneArray(array) {
var length = array.length,
result = new array.constructor(length);
// Add properties assigned by `RegExp#exec`.
if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
result.index = array.index;
result.input = array.input;
}
return result;
}
/**
* Initializes an object clone.
*
* @private
* @param {Object} object The object to clone.
* @returns {Object} Returns the initialized clone.
*/
function initCloneObject(object) {
return (typeof object.constructor == 'function' && !isPrototype(object))
? baseCreate(getPrototype(object))
: {};
}
/**
* Initializes an object clone based on its `toStringTag`.
*
* **Note:** This function only supports cloning values with tags of
* `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.
*
* @private
* @param {Object} object The object to clone.
* @param {string} tag The `toStringTag` of the object to clone.
* @param {boolean} [isDeep] Specify a deep clone.
* @returns {Object} Returns the initialized clone.
*/
function initCloneByTag(object, tag, isDeep) {
var Ctor = object.constructor;
switch (tag) {
case arrayBufferTag:
return cloneArrayBuffer(object);
case boolTag:
case dateTag:
return new Ctor(+object);
case dataViewTag:
return cloneDataView(object, isDeep);
case float32Tag: case float64Tag:
case int8Tag: case int16Tag: case int32Tag:
case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:
return cloneTypedArray(object, isDeep);
case mapTag:
return new Ctor;
case numberTag:
case stringTag:
return new Ctor(object);
case regexpTag:
return cloneRegExp(object);
case setTag:
return new Ctor;
case symbolTag:
return cloneSymbol(object);
}
}
/**
* Inserts wrapper `details` in a comment at the top of the `source` body.
*
* @private
* @param {string} source The source to modify.
* @returns {Array} details The details to insert.
* @returns {string} Returns the modified source.
*/
function insertWrapDetails(source, details) {
var length = details.length;
if (!length) {
return source;
}
var lastIndex = length - 1;
details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];
details = details.join(length > 2 ? ', ' : ' ');
return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n');
}
/**
* Checks if `value` is a flattenable `arguments` object or array.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is flattenable, else `false`.
*/
function isFlattenable(value) {
return isArray(value) || isArguments(value) ||
!!(spreadableSymbol && value && value[spreadableSymbol]);
}
/**
* Checks if `value` is a valid array-like index.
*
* @private
* @param {*} value The value to check.
* @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
* @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
*/
function isIndex(value, length) {
var type = typeof value;
length = length == null ? MAX_SAFE_INTEGER : length;
return !!length &&
(type == 'number' ||
(type != 'symbol' && reIsUint.test(value))) &&
(value > -1 && value % 1 == 0 && value < length);
}
/**
* Checks if the given arguments are from an iteratee call.
*
* @private
* @param {*} value The potential iteratee value argument.
* @param {*} index The potential iteratee index or key argument.
* @param {*} object The potential iteratee object argument.
* @returns {boolean} Returns `true` if the arguments are from an iteratee call,
* else `false`.
*/
function isIterateeCall(value, index, object) {
if (!isObject(object)) {
return false;
}
var type = typeof index;
if (type == 'number'
? (isArrayLike(object) && isIndex(index, object.length))
: (type == 'string' && index in object)
) {
return eq(object[index], value);
}
return false;
}
/**
* Checks if `value` is a property name and not a property path.
*
* @private
* @param {*} value The value to check.
* @param {Object} [object] The object to query keys on.
* @returns {boolean} Returns `true` if `value` is a property name, else `false`.
*/
function isKey(value, object) {
if (isArray(value)) {
return false;
}
var type = typeof value;
if (type == 'number' || type == 'symbol' || type == 'boolean' ||
value == null || isSymbol(value)) {
return true;
}
return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
(object != null && value in Object(object));
}
/**
* Checks if `value` is suitable for use as unique object key.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is suitable, else `false`.
*/
function isKeyable(value) {
var type = typeof value;
return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
? (value !== '__proto__')
: (value === null);
}
/**
* Checks if `func` has a lazy counterpart.
*
* @private
* @param {Function} func The function to check.
* @returns {boolean} Returns `true` if `func` has a lazy counterpart,
* else `false`.
*/
function isLaziable(func) {
var funcName = getFuncName(func),
other = lodash[funcName];
if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {
return false;
}
if (func === other) {
return true;
}
var data = getData(other);
return !!data && func === data[0];
}
/**
* Checks if `func` has its source masked.
*
* @private
* @param {Function} func The function to check.
* @returns {boolean} Returns `true` if `func` is masked, else `false`.
*/
function isMasked(func) {
return !!maskSrcKey && (maskSrcKey in func);
}
/**
* Checks if `func` is capable of being masked.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `func` is maskable, else `false`.
*/
var isMaskable = coreJsData ? isFunction : stubFalse;
/**
* Checks if `value` is likely a prototype object.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
*/
function isPrototype(value) {
var Ctor = value && value.constructor,
proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;
return value === proto;
}
/**
* Checks if `value` is suitable for strict equality comparisons, i.e. `===`.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` if suitable for strict
* equality comparisons, else `false`.
*/
function isStrictComparable(value) {
return value === value && !isObject(value);
}
/**
* A specialized version of `matchesProperty` for source values suitable
* for strict equality comparisons, i.e. `===`.
*
* @private
* @param {string} key The key of the property to get.
* @param {*} srcValue The value to match.
* @returns {Function} Returns the new spec function.
*/
function matchesStrictComparable(key, srcValue) {
return function(object) {
if (object == null) {
return false;
}
return object[key] === srcValue &&
(srcValue !== undefined || (key in Object(object)));
};
}
/**
* A specialized version of `_.memoize` which clears the memoized function's
* cache when it exceeds `MAX_MEMOIZE_SIZE`.
*
* @private
* @param {Function} func The function to have its output memoized.
* @returns {Function} Returns the new memoized function.
*/
function memoizeCapped(func) {
var result = memoize(func, function(key) {
if (cache.size === MAX_MEMOIZE_SIZE) {
cache.clear();
}
return key;
});
var cache = result.cache;
return result;
}
/**
* Merges the function metadata of `source` into `data`.
*
* Merging metadata reduces the number of wrappers used to invoke a function.
* This is possible because methods like `_.bind`, `_.curry`, and `_.partial`
* may be applied regardless of execution order. Methods like `_.ary` and
* `_.rearg` modify function arguments, making the order in which they are
* executed important, preventing the merging of metadata. However, we make
* an exception for a safe combined case where curried functions have `_.ary`
* and or `_.rearg` applied.
*
* @private
* @param {Array} data The destination metadata.
* @param {Array} source The source metadata.
* @returns {Array} Returns `data`.
*/
function mergeData(data, source) {
var bitmask = data[1],
srcBitmask = source[1],
newBitmask = bitmask | srcBitmask,
isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);
var isCombo =
((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) ||
((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) ||
((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG));
// Exit early if metadata can't be merged.
if (!(isCommon || isCombo)) {
return data;
}
// Use source `thisArg` if available.
if (srcBitmask & WRAP_BIND_FLAG) {
data[2] = source[2];
// Set when currying a bound function.
newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;
}
// Compose partial arguments.
var value = source[3];
if (value) {
var partials = data[3];
data[3] = partials ? composeArgs(partials, value, source[4]) : value;
data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];
}
// Compose partial right arguments.
value = source[5];
if (value) {
partials = data[5];
data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;
data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];
}
// Use source `argPos` if available.
value = source[7];
if (value) {
data[7] = value;
}
// Use source `ary` if it's smaller.
if (srcBitmask & WRAP_ARY_FLAG) {
data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);
}
// Use source `arity` if one is not provided.
if (data[9] == null) {
data[9] = source[9];
}
// Use source `func` and merge bitmasks.
data[0] = source[0];
data[1] = newBitmask;
return data;
}
/**
* This function is like
* [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
* except that it includes inherited enumerable properties.
*
* @private
* @param {Object} object The object to query.
* @returns {Array} Returns the array of property names.
*/
function nativeKeysIn(object) {
var result = [];
if (object != null) {
for (var key in Object(object)) {
result.push(key);
}
}
return result;
}
/**
* Converts `value` to a string using `Object.prototype.toString`.
*
* @private
* @param {*} value The value to convert.
* @returns {string} Returns the converted string.
*/
function objectToString(value) {
return nativeObjectToString.call(value);
}
/**
* A specialized version of `baseRest` which transforms the rest array.
*
* @private
* @param {Function} func The function to apply a rest parameter to.
* @param {number} [start=func.length-1] The start position of the rest parameter.
* @param {Function} transform The rest array transform.
* @returns {Function} Returns the new function.
*/
function overRest(func, start, transform) {
start = nativeMax(start === undefined ? (func.length - 1) : start, 0);
return function() {
var args = arguments,
index = -1,
length = nativeMax(args.length - start, 0),
array = Array(length);
while (++index < length) {
array[index] = args[start + index];
}
index = -1;
var otherArgs = Array(start + 1);
while (++index < start) {
otherArgs[index] = args[index];
}
otherArgs[start] = transform(array);
return apply(func, this, otherArgs);
};
}
/**
* Gets the parent value at `path` of `object`.
*
* @private
* @param {Object} object The object to query.
* @param {Array} path The path to get the parent value of.
* @returns {*} Returns the parent value.
*/
function parent(object, path) {
return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));
}
/**
* Reorder `array` according to the specified indexes where the element at
* the first index is assigned as the first element, the element at
* the second index is assigned as the second element, and so on.
*
* @private
* @param {Array} array The array to reorder.
* @param {Array} indexes The arranged array indexes.
* @returns {Array} Returns `array`.
*/
function reorder(array, indexes) {
var arrLength = array.length,
length = nativeMin(indexes.length, arrLength),
oldArray = copyArray(array);
while (length--) {
var index = indexes[length];
array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;
}
return array;
}
/**
* Gets the value at `key`, unless `key` is "__proto__".
*
* @private
* @param {Object} object The object to query.
* @param {string} key The key of the property to get.
* @returns {*} Returns the property value.
*/
function safeGet(object, key) {
if (key == '__proto__') {
return;
}
return object[key];
}
/**
* Sets metadata for `func`.
*
* **Note:** If this function becomes hot, i.e. is invoked a lot in a short
* period of time, it will trip its breaker and transition to an identity
* function to avoid garbage collection pauses in V8. See
* [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)
* for more details.
*
* @private
* @param {Function} func The function to associate metadata with.
* @param {*} data The metadata.
* @returns {Function} Returns `func`.
*/
var setData = shortOut(baseSetData);
/**
* A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).
*
* @private
* @param {Function} func The function to delay.
* @param {number} wait The number of milliseconds to delay invocation.
* @returns {number|Object} Returns the timer id or timeout object.
*/
var setTimeout = ctxSetTimeout || function(func, wait) {
return root.setTimeout(func, wait);
};
/**
* Sets the `toString` method of `func` to return `string`.
*
* @private
* @param {Function} func The function to modify.
* @param {Function} string The `toString` result.
* @returns {Function} Returns `func`.
*/
var setToString = shortOut(baseSetToString);
/**
* Sets the `toString` method of `wrapper` to mimic the source of `reference`
* with wrapper details in a comment at the top of the source body.
*
* @private
* @param {Function} wrapper The function to modify.
* @param {Function} reference The reference function.
* @param {number} bitmask The bitmask flags. See `createWrap` for more details.
* @returns {Function} Returns `wrapper`.
*/
function setWrapToString(wrapper, reference, bitmask) {
var source = (reference + '');
return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));
}
/**
* Creates a function that'll short out and invoke `identity` instead
* of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`
* milliseconds.
*
* @private
* @param {Function} func The function to restrict.
* @returns {Function} Returns the new shortable function.
*/
function shortOut(func) {
var count = 0,
lastCalled = 0;
return function() {
var stamp = nativeNow(),
remaining = HOT_SPAN - (stamp - lastCalled);
lastCalled = stamp;
if (remaining > 0) {
if (++count >= HOT_COUNT) {
return arguments[0];
}
} else {
count = 0;
}
return func.apply(undefined, arguments);
};
}
/**
* A specialized version of `_.shuffle` which mutates and sets the size of `array`.
*
* @private
* @param {Array} array The array to shuffle.
* @param {number} [size=array.length] The size of `array`.
* @returns {Array} Returns `array`.
*/
function shuffleSelf(array, size) {
var index = -1,
length = array.length,
lastIndex = length - 1;
size = size === undefined ? length : size;
while (++index < size) {
var rand = baseRandom(index, lastIndex),
value = array[rand];
array[rand] = array[index];
array[index] = value;
}
array.length = size;
return array;
}
/**
* Converts `string` to a property path array.
*
* @private
* @param {string} string The string to convert.
* @returns {Array} Returns the property path array.
*/
var stringToPath = memoizeCapped(function(string) {
var result = [];
if (string.charCodeAt(0) === 46 /* . */) {
result.push('');
}
string.replace(rePropName, function(match, number, quote, subString) {
result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));
});
return result;
});
/**
* Converts `value` to a string key if it's not a string or symbol.
*
* @private
* @param {*} value The value to inspect.
* @returns {string|symbol} Returns the key.
*/
function toKey(value) {
if (typeof value == 'string' || isSymbol(value)) {
return value;
}
var result = (value + '');
return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
}
/**
* Converts `func` to its source code.
*
* @private
* @param {Function} func The function to convert.
* @returns {string} Returns the source code.
*/
function toSource(func) {
if (func != null) {
try {
return funcToString.call(func);
} catch (e) {}
try {
return (func + '');
} catch (e) {}
}
return '';
}
/**
* Updates wrapper `details` based on `bitmask` flags.
*
* @private
* @returns {Array} details The details to modify.
* @param {number} bitmask The bitmask flags. See `createWrap` for more details.
* @returns {Array} Returns `details`.
*/
function updateWrapDetails(details, bitmask) {
arrayEach(wrapFlags, function(pair) {
var value = '_.' + pair[0];
if ((bitmask & pair[1]) && !arrayIncludes(details, value)) {
details.push(value);
}
});
return details.sort();
}
/**
* Creates a clone of `wrapper`.
*
* @private
* @param {Object} wrapper The wrapper to clone.
* @returns {Object} Returns the cloned wrapper.
*/
function wrapperClone(wrapper) {
if (wrapper instanceof LazyWrapper) {
return wrapper.clone();
}
var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);
result.__actions__ = copyArray(wrapper.__actions__);
result.__index__ = wrapper.__index__;
result.__values__ = wrapper.__values__;
return result;
}
/*------------------------------------------------------------------------*/
/**
* Creates an array of elements split into groups the length of `size`.
* If `array` can't be split evenly, the final chunk will be the remaining
* elements.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Array
* @param {Array} array The array to process.
* @param {number} [size=1] The length of each chunk
* @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
* @returns {Array} Returns the new array of chunks.
* @example
*
* _.chunk(['a', 'b', 'c', 'd'], 2);
* // => [['a', 'b'], ['c', 'd']]
*
* _.chunk(['a', 'b', 'c', 'd'], 3);
* // => [['a', 'b', 'c'], ['d']]
*/
function chunk(array, size, guard) {
if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) {
size = 1;
} else {
size = nativeMax(toInteger(size), 0);
}
var length = array == null ? 0 : array.length;
if (!length || size < 1) {
return [];
}
var index = 0,
resIndex = 0,
result = Array(nativeCeil(length / size));
while (index < length) {
result[resIndex++] = baseSlice(array, index, (index += size));
}
return result;
}
/**
* Creates an array with all falsey values removed. The values `false`, `null`,
* `0`, `""`, `undefined`, and `NaN` are falsey.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Array
* @param {Array} array The array to compact.
* @returns {Array} Returns the new array of filtered values.
* @example
*
* _.compact([0, 1, false, 2, '', 3]);
* // => [1, 2, 3]
*/
function compact(array) {
var index = -1,
length = array == null ? 0 : array.length,
resIndex = 0,
result = [];
while (++index < length) {
var value = array[index];
if (value) {
result[resIndex++] = value;
}
}
return result;
}
/**
* Creates a new array concatenating `array` with any additional arrays
* and/or values.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {Array} array The array to concatenate.
* @param {...*} [values] The values to concatenate.
* @returns {Array} Returns the new concatenated array.
* @example
*
* var array = [1];
* var other = _.concat(array, 2, [3], [[4]]);
*
* console.log(other);
* // => [1, 2, 3, [4]]
*
* console.log(array);
* // => [1]
*/
function concat() {
var length = arguments.length;
if (!length) {
return [];
}
var args = Array(length - 1),
array = arguments[0],
index = length;
while (index--) {
args[index - 1] = arguments[index];
}
return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));
}
/**
* Creates an array of `array` values not included in the other given arrays
* using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
* for equality comparisons. The order and references of result values are
* determined by the first array.
*
* **Note:** Unlike `_.pullAll`, this method returns a new array.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Array
* @param {Array} array The array to inspect.
* @param {...Array} [values] The values to exclude.
* @returns {Array} Returns the new array of filtered values.
* @see _.without, _.xor
* @example
*
* _.difference([2, 1], [2, 3]);
* // => [1]
*/
var difference = baseRest(function(array, values) {
return isArrayLikeObject(array)
? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))
: [];
});
/**
* This method is like `_.difference` except that it accepts `iteratee` which
* is invoked for each element of `array` and `values` to generate the criterion
* by which they're compared. The order and references of result values are
* determined by the first array. The iteratee is invoked with one argument:
* (value).
*
* **Note:** Unlike `_.pullAllBy`, this method returns a new array.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {Array} array The array to inspect.
* @param {...Array} [values] The values to exclude.
* @param {Function} [iteratee=_.identity] The iteratee invoked per element.
* @returns {Array} Returns the new array of filtered values.
* @example
*
* _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);
* // => [1.2]
*
* // The `_.property` iteratee shorthand.
* _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');
* // => [{ 'x': 2 }]
*/
var differenceBy = baseRest(function(array, values) {
var iteratee = last(values);
if (isArrayLikeObject(iteratee)) {
iteratee = undefined;
}
return isArrayLikeObject(array)
? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2))
: [];
});
/**
* This method is like `_.difference` except that it accepts `comparator`
* which is invoked to compare elements of `array` to `values`. The order and
* references of result values are determined by the first array. The comparator
* is invoked with two arguments: (arrVal, othVal).
*
* **Note:** Unlike `_.pullAllWith`, this method returns a new array.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {Array} array The array to inspect.
* @param {...Array} [values] The values to exclude.
* @param {Function} [comparator] The comparator invoked per element.
* @returns {Array} Returns the new array of filtered values.
* @example
*
* var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
*
* _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);
* // => [{ 'x': 2, 'y': 1 }]
*/
var differenceWith = baseRest(function(array, values) {
var comparator = last(values);
if (isArrayLikeObject(comparator)) {
comparator = undefined;
}
return isArrayLikeObject(array)
? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)
: [];
});
/**
* Creates a slice of `array` with `n` elements dropped from the beginning.
*
* @static
* @memberOf _
* @since 0.5.0
* @category Array
* @param {Array} array The array to query.
* @param {number} [n=1] The number of elements to drop.
* @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
* @returns {Array} Returns the slice of `array`.
* @example
*
* _.drop([1, 2, 3]);
* // => [2, 3]
*
* _.drop([1, 2, 3], 2);
* // => [3]
*
* _.drop([1, 2, 3], 5);
* // => []
*
* _.drop([1, 2, 3], 0);
* // => [1, 2, 3]
*/
function drop(array, n, guard) {
var length = array == null ? 0 : array.length;
if (!length) {
return [];
}
n = (guard || n === undefined) ? 1 : toInteger(n);
return baseSlice(array, n < 0 ? 0 : n, length);
}
/**
* Creates a slice of `array` with `n` elements dropped from the end.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Array
* @param {Array} array The array to query.
* @param {number} [n=1] The number of elements to drop.
* @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
* @returns {Array} Returns the slice of `array`.
* @example
*
* _.dropRight([1, 2, 3]);
* // => [1, 2]
*
* _.dropRight([1, 2, 3], 2);
* // => [1]
*
* _.dropRight([1, 2, 3], 5);
* // => []
*
* _.dropRight([1, 2, 3], 0);
* // => [1, 2, 3]
*/
function dropRight(array, n, guard) {
var length = array == null ? 0 : array.length;
if (!length) {
return [];
}
n = (guard || n === undefined) ? 1 : toInteger(n);
n = length - n;
return baseSlice(array, 0, n < 0 ? 0 : n);
}
/**
* Creates a slice of `array` excluding elements dropped from the end.
* Elements are dropped until `predicate` returns falsey. The predicate is
* invoked with three arguments: (value, index, array).
*
* @static
* @memberOf _
* @since 3.0.0
* @category Array
* @param {Array} array The array to query.
* @param {Function} [predicate=_.identity] The function invoked per iteration.
* @returns {Array} Returns the slice of `array`.
* @example
*
* var users = [
* { 'user': 'barney', 'active': true },
* { 'user': 'fred', 'active': false },
* { 'user': 'pebbles', 'active': false }
* ];
*
* _.dropRightWhile(users, function(o) { return !o.active; });
* // => objects for ['barney']
*
* // The `_.matches` iteratee shorthand.
* _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });
* // => objects for ['barney', 'fred']
*
* // The `_.matchesProperty` iteratee shorthand.
* _.dropRightWhile(users, ['active', false]);
* // => objects for ['barney']
*
* // The `_.property` iteratee shorthand.
* _.dropRightWhile(users, 'active');
* // => objects for ['barney', 'fred', 'pebbles']
*/
function dropRightWhile(array, predicate) {
return (array && array.length)
? baseWhile(array, getIteratee(predicate, 3), true, true)
: [];
}
/**
* Creates a slice of `array` excluding elements dropped from the beginning.
* Elements are dropped until `predicate` returns falsey. The predicate is
* invoked with three arguments: (value, index, array).
*
* @static
* @memberOf _
* @since 3.0.0
* @category Array
* @param {Array} array The array to query.
* @param {Function} [predicate=_.identity] The function invoked per iteration.
* @returns {Array} Returns the slice of `array`.
* @example
*
* var users = [
* { 'user': 'barney', 'active': false },
* { 'user': 'fred', 'active': false },
* { 'user': 'pebbles', 'active': true }
* ];
*
* _.dropWhile(users, function(o) { return !o.active; });
* // => objects for ['pebbles']
*
* // The `_.matches` iteratee shorthand.
* _.dropWhile(users, { 'user': 'barney', 'active': false });
* // => objects for ['fred', 'pebbles']
*
* // The `_.matchesProperty` iteratee shorthand.
* _.dropWhile(users, ['active', false]);
* // => objects for ['pebbles']
*
* // The `_.property` iteratee shorthand.
* _.dropWhile(users, 'active');
* // => objects for ['barney', 'fred', 'pebbles']
*/
function dropWhile(array, predicate) {
return (array && array.length)
? baseWhile(array, getIteratee(predicate, 3), true)
: [];
}
/**
* Fills elements of `array` with `value` from `start` up to, but not
* including, `end`.
*
* **Note:** This method mutates `array`.
*
* @static
* @memberOf _
* @since 3.2.0
* @category Array
* @param {Array} array The array to fill.
* @param {*} value The value to fill `array` with.
* @param {number} [start=0] The start position.
* @param {number} [end=array.length] The end position.
* @returns {Array} Returns `array`.
* @example
*
* var array = [1, 2, 3];
*
* _.fill(array, 'a');
* console.log(array);
* // => ['a', 'a', 'a']
*
* _.fill(Array(3), 2);
* // => [2, 2, 2]
*
* _.fill([4, 6, 8, 10], '*', 1, 3);
* // => [4, '*', '*', 10]
*/
function fill(array, value, start, end) {
var length = array == null ? 0 : array.length;
if (!length) {
return [];
}
if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {
start = 0;
end = length;
}
return baseFill(array, value, start, end);
}
/**
* This method is like `_.find` except that it returns the index of the first
* element `predicate` returns truthy for instead of the element itself.
*
* @static
* @memberOf _
* @since 1.1.0
* @category Array
* @param {Array} array The array to inspect.
* @param {Function} [predicate=_.identity] The function invoked per iteration.
* @param {number} [fromIndex=0] The index to search from.
* @returns {number} Returns the index of the found element, else `-1`.
* @example
*
* var users = [
* { 'user': 'barney', 'active': false },
* { 'user': 'fred', 'active': false },
* { 'user': 'pebbles', 'active': true }
* ];
*
* _.findIndex(users, function(o) { return o.user == 'barney'; });
* // => 0
*
* // The `_.matches` iteratee shorthand.
* _.findIndex(users, { 'user': 'fred', 'active': false });
* // => 1
*
* // The `_.matchesProperty` iteratee shorthand.
* _.findIndex(users, ['active', false]);
* // => 0
*
* // The `_.property` iteratee shorthand.
* _.findIndex(users, 'active');
* // => 2
*/
function findIndex(array, predicate, fromIndex) {
var length = array == null ? 0 : array.length;
if (!length) {
return -1;
}
var index = fromIndex == null ? 0 : toInteger(fromIndex);
if (index < 0) {
index = nativeMax(length + index, 0);
}
return baseFindIndex(array, getIteratee(predicate, 3), index);
}
/**
* This method is like `_.findIndex` except that it iterates over elements
* of `collection` from right to left.
*
* @static
* @memberOf _
* @since 2.0.0
* @category Array
* @param {Array} array The array to inspect.
* @param {Function} [predicate=_.identity] The function invoked per iteration.
* @param {number} [fromIndex=array.length-1] The index to search from.
* @returns {number} Returns the index of the found element, else `-1`.
* @example
*
* var users = [
* { 'user': 'barney', 'active': true },
* { 'user': 'fred', 'active': false },
* { 'user': 'pebbles', 'active': false }
* ];
*
* _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });
* // => 2
*
* // The `_.matches` iteratee shorthand.
* _.findLastIndex(users, { 'user': 'barney', 'active': true });
* // => 0
*
* // The `_.matchesProperty` iteratee shorthand.
* _.findLastIndex(users, ['active', false]);
* // => 2
*
* // The `_.property` iteratee shorthand.
* _.findLastIndex(users, 'active');
* // => 0
*/
function findLastIndex(array, predicate, fromIndex) {
var length = array == null ? 0 : array.length;
if (!length) {
return -1;
}
var index = length - 1;
if (fromIndex !== undefined) {
index = toInteger(fromIndex);
index = fromIndex < 0
? nativeMax(length + index, 0)
: nativeMin(index, length - 1);
}
return baseFindIndex(array, getIteratee(predicate, 3), index, true);
}
/**
* Flattens `array` a single level deep.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Array
* @param {Array} array The array to flatten.
* @returns {Array} Returns the new flattened array.
* @example
*
* _.flatten([1, [2, [3, [4]], 5]]);
* // => [1, 2, [3, [4]], 5]
*/
function flatten(array) {
var length = array == null ? 0 : array.length;
return length ? baseFlatten(array, 1) : [];
}
/**
* Recursively flattens `array`.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Array
* @param {Array} array The array to flatten.
* @returns {Array} Returns the new flattened array.
* @example
*
* _.flattenDeep([1, [2, [3, [4]], 5]]);
* // => [1, 2, 3, 4, 5]
*/
function flattenDeep(array) {
var length = array == null ? 0 : array.length;
return length ? baseFlatten(array, INFINITY) : [];
}
/**
* Recursively flatten `array` up to `depth` times.
*
* @static
* @memberOf _
* @since 4.4.0
* @category Array
* @param {Array} array The array to flatten.
* @param {number} [depth=1] The maximum recursion depth.
* @returns {Array} Returns the new flattened array.
* @example
*
* var array = [1, [2, [3, [4]], 5]];
*
* _.flattenDepth(array, 1);
* // => [1, 2, [3, [4]], 5]
*
* _.flattenDepth(array, 2);
* // => [1, 2, 3, [4], 5]
*/
function flattenDepth(array, depth) {
var length = array == null ? 0 : array.length;
if (!length) {
return [];
}
depth = depth === undefined ? 1 : toInteger(depth);
return baseFlatten(array, depth);
}
/**
* The inverse of `_.toPairs`; this method returns an object composed
* from key-value `pairs`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {Array} pairs The key-value pairs.
* @returns {Object} Returns the new object.
* @example
*
* _.fromPairs([['a', 1], ['b', 2]]);
* // => { 'a': 1, 'b': 2 }
*/
function fromPairs(pairs) {
var index = -1,
length = pairs == null ? 0 : pairs.length,
result = {};
while (++index < length) {
var pair = pairs[index];
result[pair[0]] = pair[1];
}
return result;
}
/**
* Gets the first element of `array`.
*
* @static
* @memberOf _
* @since 0.1.0
* @alias first
* @category Array
* @param {Array} array The array to query.
* @returns {*} Returns the first element of `array`.
* @example
*
* _.head([1, 2, 3]);
* // => 1
*
* _.head([]);
* // => undefined
*/
function head(array) {
return (array && array.length) ? array[0] : undefined;
}
/**
* Gets the index at which the first occurrence of `value` is found in `array`
* using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
* for equality comparisons. If `fromIndex` is negative, it's used as the
* offset from the end of `array`.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Array
* @param {Array} array The array to inspect.
* @param {*} value The value to search for.
* @param {number} [fromIndex=0] The index to search from.
* @returns {number} Returns the index of the matched value, else `-1`.
* @example
*
* _.indexOf([1, 2, 1, 2], 2);
* // => 1
*
* // Search from the `fromIndex`.
* _.indexOf([1, 2, 1, 2], 2, 2);
* // => 3
*/
function indexOf(array, value, fromIndex) {
var length = array == null ? 0 : array.length;
if (!length) {
return -1;
}
var index = fromIndex == null ? 0 : toInteger(fromIndex);
if (index < 0) {
index = nativeMax(length + index, 0);
}
return baseIndexOf(array, value, index);
}
/**
* Gets all but the last element of `array`.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Array
* @param {Array} array The array to query.
* @returns {Array} Returns the slice of `array`.
* @example
*
* _.initial([1, 2, 3]);
* // => [1, 2]
*/
function initial(array) {
var length = array == null ? 0 : array.length;
return length ? baseSlice(array, 0, -1) : [];
}
/**
* Creates an array of unique values that are included in all given arrays
* using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
* for equality comparisons. The order and references of result values are
* determined by the first array.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Array
* @param {...Array} [arrays] The arrays to inspect.
* @returns {Array} Returns the new array of intersecting values.
* @example
*
* _.intersection([2, 1], [2, 3]);
* // => [2]
*/
var intersection = baseRest(function(arrays) {
var mapped = arrayMap(arrays, castArrayLikeObject);
return (mapped.length && mapped[0] === arrays[0])
? baseIntersection(mapped)
: [];
});
/**
* This method is like `_.intersection` except that it accepts `iteratee`
* which is invoked for each element of each `arrays` to generate the criterion
* by which they're compared. The order and references of result values are
* determined by the first array. The iteratee is invoked with one argument:
* (value).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {...Array} [arrays] The arrays to inspect.
* @param {Function} [iteratee=_.identity] The iteratee invoked per element.
* @returns {Array} Returns the new array of intersecting values.
* @example
*
* _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);
* // => [2.1]
*
* // The `_.property` iteratee shorthand.
* _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
* // => [{ 'x': 1 }]
*/
var intersectionBy = baseRest(function(arrays) {
var iteratee = last(arrays),
mapped = arrayMap(arrays, castArrayLikeObject);
if (iteratee === last(mapped)) {
iteratee = undefined;
} else {
mapped.pop();
}
return (mapped.length && mapped[0] === arrays[0])
? baseIntersection(mapped, getIteratee(iteratee, 2))
: [];
});
/**
* This method is like `_.intersection` except that it accepts `comparator`
* which is invoked to compare elements of `arrays`. The order and references
* of result values are determined by the first array. The comparator is
* invoked with two arguments: (arrVal, othVal).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {...Array} [arrays] The arrays to inspect.
* @param {Function} [comparator] The comparator invoked per element.
* @returns {Array} Returns the new array of intersecting values.
* @example
*
* var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
* var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
*
* _.intersectionWith(objects, others, _.isEqual);
* // => [{ 'x': 1, 'y': 2 }]
*/
var intersectionWith = baseRest(function(arrays) {
var comparator = last(arrays),
mapped = arrayMap(arrays, castArrayLikeObject);
comparator = typeof comparator == 'function' ? comparator : undefined;
if (comparator) {
mapped.pop();
}
return (mapped.length && mapped[0] === arrays[0])
? baseIntersection(mapped, undefined, comparator)
: [];
});
/**
* Converts all elements in `array` into a string separated by `separator`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {Array} array The array to convert.
* @param {string} [separator=','] The element separator.
* @returns {string} Returns the joined string.
* @example
*
* _.join(['a', 'b', 'c'], '~');
* // => 'a~b~c'
*/
function join(array, separator) {
return array == null ? '' : nativeJoin.call(array, separator);
}
/**
* Gets the last element of `array`.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Array
* @param {Array} array The array to query.
* @returns {*} Returns the last element of `array`.
* @example
*
* _.last([1, 2, 3]);
* // => 3
*/
function last(array) {
var length = array == null ? 0 : array.length;
return length ? array[length - 1] : undefined;
}
/**
* This method is like `_.indexOf` except that it iterates over elements of
* `array` from right to left.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Array
* @param {Array} array The array to inspect.
* @param {*} value The value to search for.
* @param {number} [fromIndex=array.length-1] The index to search from.
* @returns {number} Returns the index of the matched value, else `-1`.
* @example
*
* _.lastIndexOf([1, 2, 1, 2], 2);
* // => 3
*
* // Search from the `fromIndex`.
* _.lastIndexOf([1, 2, 1, 2], 2, 2);
* // => 1
*/
function lastIndexOf(array, value, fromIndex) {
var length = array == null ? 0 : array.length;
if (!length) {
return -1;
}
var index = length;
if (fromIndex !== undefined) {
index = toInteger(fromIndex);
index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);
}
return value === value
? strictLastIndexOf(array, value, index)
: baseFindIndex(array, baseIsNaN, index, true);
}
/**
* Gets the element at index `n` of `array`. If `n` is negative, the nth
* element from the end is returned.
*
* @static
* @memberOf _
* @since 4.11.0
* @category Array
* @param {Array} array The array to query.
* @param {number} [n=0] The index of the element to return.
* @returns {*} Returns the nth element of `array`.
* @example
*
* var array = ['a', 'b', 'c', 'd'];
*
* _.nth(array, 1);
* // => 'b'
*
* _.nth(array, -2);
* // => 'c';
*/
function nth(array, n) {
return (array && array.length) ? baseNth(array, toInteger(n)) : undefined;
}
/**
* Removes all given values from `array` using
* [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
* for equality comparisons.
*
* **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`
* to remove elements from an array by predicate.
*
* @static
* @memberOf _
* @since 2.0.0
* @category Array
* @param {Array} array The array to modify.
* @param {...*} [values] The values to remove.
* @returns {Array} Returns `array`.
* @example
*
* var array = ['a', 'b', 'c', 'a', 'b', 'c'];
*
* _.pull(array, 'a', 'c');
* console.log(array);
* // => ['b', 'b']
*/
var pull = baseRest(pullAll);
/**
* This method is like `_.pull` except that it accepts an array of values to remove.
*
* **Note:** Unlike `_.difference`, this method mutates `array`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {Array} array The array to modify.
* @param {Array} values The values to remove.
* @returns {Array} Returns `array`.
* @example
*
* var array = ['a', 'b', 'c', 'a', 'b', 'c'];
*
* _.pullAll(array, ['a', 'c']);
* console.log(array);
* // => ['b', 'b']
*/
function pullAll(array, values) {
return (array && array.length && values && values.length)
? basePullAll(array, values)
: array;
}
/**
* This method is like `_.pullAll` except that it accepts `iteratee` which is
* invoked for each element of `array` and `values` to generate the criterion
* by which they're compared. The iteratee is invoked with one argument: (value).
*
* **Note:** Unlike `_.differenceBy`, this method mutates `array`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {Array} array The array to modify.
* @param {Array} values The values to remove.
* @param {Function} [iteratee=_.identity] The iteratee invoked per element.
* @returns {Array} Returns `array`.
* @example
*
* var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];
*
* _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');
* console.log(array);
* // => [{ 'x': 2 }]
*/
function pullAllBy(array, values, iteratee) {
return (array && array.length && values && values.length)
? basePullAll(array, values, getIteratee(iteratee, 2))
: array;
}
/**
* This method is like `_.pullAll` except that it accepts `comparator` which
* is invoked to compare elements of `array` to `values`. The comparator is
* invoked with two arguments: (arrVal, othVal).
*
* **Note:** Unlike `_.differenceWith`, this method mutates `array`.
*
* @static
* @memberOf _
* @since 4.6.0
* @category Array
* @param {Array} array The array to modify.
* @param {Array} values The values to remove.
* @param {Function} [comparator] The comparator invoked per element.
* @returns {Array} Returns `array`.
* @example
*
* var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];
*
* _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);
* console.log(array);
* // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]
*/
function pullAllWith(array, values, comparator) {
return (array && array.length && values && values.length)
? basePullAll(array, values, undefined, comparator)
: array;
}
/**
* Removes elements from `array` corresponding to `indexes` and returns an
* array of removed elements.
*
* **Note:** Unlike `_.at`, this method mutates `array`.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Array
* @param {Array} array The array to modify.
* @param {...(number|number[])} [indexes] The indexes of elements to remove.
* @returns {Array} Returns the new array of removed elements.
* @example
*
* var array = ['a', 'b', 'c', 'd'];
* var pulled = _.pullAt(array, [1, 3]);
*
* console.log(array);
* // => ['a', 'c']
*
* console.log(pulled);
* // => ['b', 'd']
*/
var pullAt = flatRest(function(array, indexes) {
var length = array == null ? 0 : array.length,
result = baseAt(array, indexes);
basePullAt(array, arrayMap(indexes, function(index) {
return isIndex(index, length) ? +index : index;
}).sort(compareAscending));
return result;
});
/**
* Removes all elements from `array` that `predicate` returns truthy for
* and returns an array of the removed elements. The predicate is invoked
* with three arguments: (value, index, array).
*
* **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`
* to pull elements from an array by value.
*
* @static
* @memberOf _
* @since 2.0.0
* @category Array
* @param {Array} array The array to modify.
* @param {Function} [predicate=_.identity] The function invoked per iteration.
* @returns {Array} Returns the new array of removed elements.
* @example
*
* var array = [1, 2, 3, 4];
* var evens = _.remove(array, function(n) {
* return n % 2 == 0;
* });
*
* console.log(array);
* // => [1, 3]
*
* console.log(evens);
* // => [2, 4]
*/
function remove(array, predicate) {
var result = [];
if (!(array && array.length)) {
return result;
}
var index = -1,
indexes = [],
length = array.length;
predicate = getIteratee(predicate, 3);
while (++index < length) {
var value = array[index];
if (predicate(value, index, array)) {
result.push(value);
indexes.push(index);
}
}
basePullAt(array, indexes);
return result;
}
/**
* Reverses `array` so that the first element becomes the last, the second
* element becomes the second to last, and so on.
*
* **Note:** This method mutates `array` and is based on
* [`Array#reverse`](https://mdn.io/Array/reverse).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {Array} array The array to modify.
* @returns {Array} Returns `array`.
* @example
*
* var array = [1, 2, 3];
*
* _.reverse(array);
* // => [3, 2, 1]
*
* console.log(array);
* // => [3, 2, 1]
*/
function reverse(array) {
return array == null ? array : nativeReverse.call(array);
}
/**
* Creates a slice of `array` from `start` up to, but not including, `end`.
*
* **Note:** This method is used instead of
* [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are
* returned.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Array
* @param {Array} array The array to slice.
* @param {number} [start=0] The start position.
* @param {number} [end=array.length] The end position.
* @returns {Array} Returns the slice of `array`.
*/
function slice(array, start, end) {
var length = array == null ? 0 : array.length;
if (!length) {
return [];
}
if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {
start = 0;
end = length;
}
else {
start = start == null ? 0 : toInteger(start);
end = end === undefined ? length : toInteger(end);
}
return baseSlice(array, start, end);
}
/**
* Uses a binary search to determine the lowest index at which `value`
* should be inserted into `array` in order to maintain its sort order.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Array
* @param {Array} array The sorted array to inspect.
* @param {*} value The value to evaluate.
* @returns {number} Returns the index at which `value` should be inserted
* into `array`.
* @example
*
* _.sortedIndex([30, 50], 40);
* // => 1
*/
function sortedIndex(array, value) {
return baseSortedIndex(array, value);
}
/**
* This method is like `_.sortedIndex` except that it accepts `iteratee`
* which is invoked for `value` and each element of `array` to compute their
* sort ranking. The iteratee is invoked with one argument: (value).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {Array} array The sorted array to inspect.
* @param {*} value The value to evaluate.
* @param {Function} [iteratee=_.identity] The iteratee invoked per element.
* @returns {number} Returns the index at which `value` should be inserted
* into `array`.
* @example
*
* var objects = [{ 'x': 4 }, { 'x': 5 }];
*
* _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
* // => 0
*
* // The `_.property` iteratee shorthand.
* _.sortedIndexBy(objects, { 'x': 4 }, 'x');
* // => 0
*/
function sortedIndexBy(array, value, iteratee) {
return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));
}
/**
* This method is like `_.indexOf` except that it performs a binary
* search on a sorted `array`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {Array} array The array to inspect.
* @param {*} value The value to search for.
* @returns {number} Returns the index of the matched value, else `-1`.
* @example
*
* _.sortedIndexOf([4, 5, 5, 5, 6], 5);
* // => 1
*/
function sortedIndexOf(array, value) {
var length = array == null ? 0 : array.length;
if (length) {
var index = baseSortedIndex(array, value);
if (index < length && eq(array[index], value)) {
return index;
}
}
return -1;
}
/**
* This method is like `_.sortedIndex` except that it returns the highest
* index at which `value` should be inserted into `array` in order to
* maintain its sort order.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Array
* @param {Array} array The sorted array to inspect.
* @param {*} value The value to evaluate.
* @returns {number} Returns the index at which `value` should be inserted
* into `array`.
* @example
*
* _.sortedLastIndex([4, 5, 5, 5, 6], 5);
* // => 4
*/
function sortedLastIndex(array, value) {
return baseSortedIndex(array, value, true);
}
/**
* This method is like `_.sortedLastIndex` except that it accepts `iteratee`
* which is invoked for `value` and each element of `array` to compute their
* sort ranking. The iteratee is invoked with one argument: (value).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {Array} array The sorted array to inspect.
* @param {*} value The value to evaluate.
* @param {Function} [iteratee=_.identity] The iteratee invoked per element.
* @returns {number} Returns the index at which `value` should be inserted
* into `array`.
* @example
*
* var objects = [{ 'x': 4 }, { 'x': 5 }];
*
* _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
* // => 1
*
* // The `_.property` iteratee shorthand.
* _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');
* // => 1
*/
function sortedLastIndexBy(array, value, iteratee) {
return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);
}
/**
* This method is like `_.lastIndexOf` except that it performs a binary
* search on a sorted `array`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {Array} array The array to inspect.
* @param {*} value The value to search for.
* @returns {number} Returns the index of the matched value, else `-1`.
* @example
*
* _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);
* // => 3
*/
function sortedLastIndexOf(array, value) {
var length = array == null ? 0 : array.length;
if (length) {
var index = baseSortedIndex(array, value, true) - 1;
if (eq(array[index], value)) {
return index;
}
}
return -1;
}
/**
* This method is like `_.uniq` except that it's designed and optimized
* for sorted arrays.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {Array} array The array to inspect.
* @returns {Array} Returns the new duplicate free array.
* @example
*
* _.sortedUniq([1, 1, 2]);
* // => [1, 2]
*/
function sortedUniq(array) {
return (array && array.length)
? baseSortedUniq(array)
: [];
}
/**
* This method is like `_.uniqBy` except that it's designed and optimized
* for sorted arrays.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {Array} array The array to inspect.
* @param {Function} [iteratee] The iteratee invoked per element.
* @returns {Array} Returns the new duplicate free array.
* @example
*
* _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);
* // => [1.1, 2.3]
*/
function sortedUniqBy(array, iteratee) {
return (array && array.length)
? baseSortedUniq(array, getIteratee(iteratee, 2))
: [];
}
/**
* Gets all but the first element of `array`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {Array} array The array to query.
* @returns {Array} Returns the slice of `array`.
* @example
*
* _.tail([1, 2, 3]);
* // => [2, 3]
*/
function tail(array) {
var length = array == null ? 0 : array.length;
return length ? baseSlice(array, 1, length) : [];
}
/**
* Creates a slice of `array` with `n` elements taken from the beginning.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Array
* @param {Array} array The array to query.
* @param {number} [n=1] The number of elements to take.
* @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
* @returns {Array} Returns the slice of `array`.
* @example
*
* _.take([1, 2, 3]);
* // => [1]
*
* _.take([1, 2, 3], 2);
* // => [1, 2]
*
* _.take([1, 2, 3], 5);
* // => [1, 2, 3]
*
* _.take([1, 2, 3], 0);
* // => []
*/
function take(array, n, guard) {
if (!(array && array.length)) {
return [];
}
n = (guard || n === undefined) ? 1 : toInteger(n);
return baseSlice(array, 0, n < 0 ? 0 : n);
}
/**
* Creates a slice of `array` with `n` elements taken from the end.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Array
* @param {Array} array The array to query.
* @param {number} [n=1] The number of elements to take.
* @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
* @returns {Array} Returns the slice of `array`.
* @example
*
* _.takeRight([1, 2, 3]);
* // => [3]
*
* _.takeRight([1, 2, 3], 2);
* // => [2, 3]
*
* _.takeRight([1, 2, 3], 5);
* // => [1, 2, 3]
*
* _.takeRight([1, 2, 3], 0);
* // => []
*/
function takeRight(array, n, guard) {
var length = array == null ? 0 : array.length;
if (!length) {
return [];
}
n = (guard || n === undefined) ? 1 : toInteger(n);
n = length - n;
return baseSlice(array, n < 0 ? 0 : n, length);
}
/**
* Creates a slice of `array` with elements taken from the end. Elements are
* taken until `predicate` returns falsey. The predicate is invoked with
* three arguments: (value, index, array).
*
* @static
* @memberOf _
* @since 3.0.0
* @category Array
* @param {Array} array The array to query.
* @param {Function} [predicate=_.identity] The function invoked per iteration.
* @returns {Array} Returns the slice of `array`.
* @example
*
* var users = [
* { 'user': 'barney', 'active': true },
* { 'user': 'fred', 'active': false },
* { 'user': 'pebbles', 'active': false }
* ];
*
* _.takeRightWhile(users, function(o) { return !o.active; });
* // => objects for ['fred', 'pebbles']
*
* // The `_.matches` iteratee shorthand.
* _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });
* // => objects for ['pebbles']
*
* // The `_.matchesProperty` iteratee shorthand.
* _.takeRightWhile(users, ['active', false]);
* // => objects for ['fred', 'pebbles']
*
* // The `_.property` iteratee shorthand.
* _.takeRightWhile(users, 'active');
* // => []
*/
function takeRightWhile(array, predicate) {
return (array && array.length)
? baseWhile(array, getIteratee(predicate, 3), false, true)
: [];
}
/**
* Creates a slice of `array` with elements taken from the beginning. Elements
* are taken until `predicate` returns falsey. The predicate is invoked with
* three arguments: (value, index, array).
*
* @static
* @memberOf _
* @since 3.0.0
* @category Array
* @param {Array} array The array to query.
* @param {Function} [predicate=_.identity] The function invoked per iteration.
* @returns {Array} Returns the slice of `array`.
* @example
*
* var users = [
* { 'user': 'barney', 'active': false },
* { 'user': 'fred', 'active': false },
* { 'user': 'pebbles', 'active': true }
* ];
*
* _.takeWhile(users, function(o) { return !o.active; });
* // => objects for ['barney', 'fred']
*
* // The `_.matches` iteratee shorthand.
* _.takeWhile(users, { 'user': 'barney', 'active': false });
* // => objects for ['barney']
*
* // The `_.matchesProperty` iteratee shorthand.
* _.takeWhile(users, ['active', false]);
* // => objects for ['barney', 'fred']
*
* // The `_.property` iteratee shorthand.
* _.takeWhile(users, 'active');
* // => []
*/
function takeWhile(array, predicate) {
return (array && array.length)
? baseWhile(array, getIteratee(predicate, 3))
: [];
}
/**
* Creates an array of unique values, in order, from all given arrays using
* [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
* for equality comparisons.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Array
* @param {...Array} [arrays] The arrays to inspect.
* @returns {Array} Returns the new array of combined values.
* @example
*
* _.union([2], [1, 2]);
* // => [2, 1]
*/
var union = baseRest(function(arrays) {
return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));
});
/**
* This method is like `_.union` except that it accepts `iteratee` which is
* invoked for each element of each `arrays` to generate the criterion by
* which uniqueness is computed. Result values are chosen from the first
* array in which the value occurs. The iteratee is invoked with one argument:
* (value).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {...Array} [arrays] The arrays to inspect.
* @param {Function} [iteratee=_.identity] The iteratee invoked per element.
* @returns {Array} Returns the new array of combined values.
* @example
*
* _.unionBy([2.1], [1.2, 2.3], Math.floor);
* // => [2.1, 1.2]
*
* // The `_.property` iteratee shorthand.
* _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
* // => [{ 'x': 1 }, { 'x': 2 }]
*/
var unionBy = baseRest(function(arrays) {
var iteratee = last(arrays);
if (isArrayLikeObject(iteratee)) {
iteratee = undefined;
}
return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));
});
/**
* This method is like `_.union` except that it accepts `comparator` which
* is invoked to compare elements of `arrays`. Result values are chosen from
* the first array in which the value occurs. The comparator is invoked
* with two arguments: (arrVal, othVal).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {...Array} [arrays] The arrays to inspect.
* @param {Function} [comparator] The comparator invoked per element.
* @returns {Array} Returns the new array of combined values.
* @example
*
* var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
* var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
*
* _.unionWith(objects, others, _.isEqual);
* // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
*/
var unionWith = baseRest(function(arrays) {
var comparator = last(arrays);
comparator = typeof comparator == 'function' ? comparator : undefined;
return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);
});
/**
* Creates a duplicate-free version of an array, using
* [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
* for equality comparisons, in which only the first occurrence of each element
* is kept. The order of result values is determined by the order they occur
* in the array.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Array
* @param {Array} array The array to inspect.
* @returns {Array} Returns the new duplicate free array.
* @example
*
* _.uniq([2, 1, 2]);
* // => [2, 1]
*/
function uniq(array) {
return (array && array.length) ? baseUniq(array) : [];
}
/**
* This method is like `_.uniq` except that it accepts `iteratee` which is
* invoked for each element in `array` to generate the criterion by which
* uniqueness is computed. The order of result values is determined by the
* order they occur in the array. The iteratee is invoked with one argument:
* (value).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {Array} array The array to inspect.
* @param {Function} [iteratee=_.identity] The iteratee invoked per element.
* @returns {Array} Returns the new duplicate free array.
* @example
*
* _.uniqBy([2.1, 1.2, 2.3], Math.floor);
* // => [2.1, 1.2]
*
* // The `_.property` iteratee shorthand.
* _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
* // => [{ 'x': 1 }, { 'x': 2 }]
*/
function uniqBy(array, iteratee) {
return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : [];
}
/**
* This method is like `_.uniq` except that it accepts `comparator` which
* is invoked to compare elements of `array`. The order of result values is
* determined by the order they occur in the array.The comparator is invoked
* with two arguments: (arrVal, othVal).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {Array} array The array to inspect.
* @param {Function} [comparator] The comparator invoked per element.
* @returns {Array} Returns the new duplicate free array.
* @example
*
* var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];
*
* _.uniqWith(objects, _.isEqual);
* // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]
*/
function uniqWith(array, comparator) {
comparator = typeof comparator == 'function' ? comparator : undefined;
return (array && array.length) ? baseUniq(array, undefined, comparator) : [];
}
/**
* This method is like `_.zip` except that it accepts an array of grouped
* elements and creates an array regrouping the elements to their pre-zip
* configuration.
*
* @static
* @memberOf _
* @since 1.2.0
* @category Array
* @param {Array} array The array of grouped elements to process.
* @returns {Array} Returns the new array of regrouped elements.
* @example
*
* var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);
* // => [['a', 1, true], ['b', 2, false]]
*
* _.unzip(zipped);
* // => [['a', 'b'], [1, 2], [true, false]]
*/
function unzip(array) {
if (!(array && array.length)) {
return [];
}
var length = 0;
array = arrayFilter(array, function(group) {
if (isArrayLikeObject(group)) {
length = nativeMax(group.length, length);
return true;
}
});
return baseTimes(length, function(index) {
return arrayMap(array, baseProperty(index));
});
}
/**
* This method is like `_.unzip` except that it accepts `iteratee` to specify
* how regrouped values should be combined. The iteratee is invoked with the
* elements of each group: (...group).
*
* @static
* @memberOf _
* @since 3.8.0
* @category Array
* @param {Array} array The array of grouped elements to process.
* @param {Function} [iteratee=_.identity] The function to combine
* regrouped values.
* @returns {Array} Returns the new array of regrouped elements.
* @example
*
* var zipped = _.zip([1, 2], [10, 20], [100, 200]);
* // => [[1, 10, 100], [2, 20, 200]]
*
* _.unzipWith(zipped, _.add);
* // => [3, 30, 300]
*/
function unzipWith(array, iteratee) {
if (!(array && array.length)) {
return [];
}
var result = unzip(array);
if (iteratee == null) {
return result;
}
return arrayMap(result, function(group) {
return apply(iteratee, undefined, group);
});
}
/**
* Creates an array excluding all given values using
* [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
* for equality comparisons.
*
* **Note:** Unlike `_.pull`, this method returns a new array.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Array
* @param {Array} array The array to inspect.
* @param {...*} [values] The values to exclude.
* @returns {Array} Returns the new array of filtered values.
* @see _.difference, _.xor
* @example
*
* _.without([2, 1, 2, 3], 1, 2);
* // => [3]
*/
var without = baseRest(function(array, values) {
return isArrayLikeObject(array)
? baseDifference(array, values)
: [];
});
/**
* Creates an array of unique values that is the
* [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)
* of the given arrays. The order of result values is determined by the order
* they occur in the arrays.
*
* @static
* @memberOf _
* @since 2.4.0
* @category Array
* @param {...Array} [arrays] The arrays to inspect.
* @returns {Array} Returns the new array of filtered values.
* @see _.difference, _.without
* @example
*
* _.xor([2, 1], [2, 3]);
* // => [1, 3]
*/
var xor = baseRest(function(arrays) {
return baseXor(arrayFilter(arrays, isArrayLikeObject));
});
/**
* This method is like `_.xor` except that it accepts `iteratee` which is
* invoked for each element of each `arrays` to generate the criterion by
* which by which they're compared. The order of result values is determined
* by the order they occur in the arrays. The iteratee is invoked with one
* argument: (value).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {...Array} [arrays] The arrays to inspect.
* @param {Function} [iteratee=_.identity] The iteratee invoked per element.
* @returns {Array} Returns the new array of filtered values.
* @example
*
* _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);
* // => [1.2, 3.4]
*
* // The `_.property` iteratee shorthand.
* _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
* // => [{ 'x': 2 }]
*/
var xorBy = baseRest(function(arrays) {
var iteratee = last(arrays);
if (isArrayLikeObject(iteratee)) {
iteratee = undefined;
}
return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));
});
/**
* This method is like `_.xor` except that it accepts `comparator` which is
* invoked to compare elements of `arrays`. The order of result values is
* determined by the order they occur in the arrays. The comparator is invoked
* with two arguments: (arrVal, othVal).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Array
* @param {...Array} [arrays] The arrays to inspect.
* @param {Function} [comparator] The comparator invoked per element.
* @returns {Array} Returns the new array of filtered values.
* @example
*
* var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
* var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
*
* _.xorWith(objects, others, _.isEqual);
* // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
*/
var xorWith = baseRest(function(arrays) {
var comparator = last(arrays);
comparator = typeof comparator == 'function' ? comparator : undefined;
return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);
});
/**
* Creates an array of grouped elements, the first of which contains the
* first elements of the given arrays, the second of which contains the
* second elements of the given arrays, and so on.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Array
* @param {...Array} [arrays] The arrays to process.
* @returns {Array} Returns the new array of grouped elements.
* @example
*
* _.zip(['a', 'b'], [1, 2], [true, false]);
* // => [['a', 1, true], ['b', 2, false]]
*/
var zip = baseRest(unzip);
/**
* This method is like `_.fromPairs` except that it accepts two arrays,
* one of property identifiers and one of corresponding values.
*
* @static
* @memberOf _
* @since 0.4.0
* @category Array
* @param {Array} [props=[]] The property identifiers.
* @param {Array} [values=[]] The property values.
* @returns {Object} Returns the new object.
* @example
*
* _.zipObject(['a', 'b'], [1, 2]);
* // => { 'a': 1, 'b': 2 }
*/
function zipObject(props, values) {
return baseZipObject(props || [], values || [], assignValue);
}
/**
* This method is like `_.zipObject` except that it supports property paths.
*
* @static
* @memberOf _
* @since 4.1.0
* @category Array
* @param {Array} [props=[]] The property identifiers.
* @param {Array} [values=[]] The property values.
* @returns {Object} Returns the new object.
* @example
*
* _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);
* // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }
*/
function zipObjectDeep(props, values) {
return baseZipObject(props || [], values || [], baseSet);
}
/**
* This method is like `_.zip` except that it accepts `iteratee` to specify
* how grouped values should be combined. The iteratee is invoked with the
* elements of each group: (...group).
*
* @static
* @memberOf _
* @since 3.8.0
* @category Array
* @param {...Array} [arrays] The arrays to process.
* @param {Function} [iteratee=_.identity] The function to combine
* grouped values.
* @returns {Array} Returns the new array of grouped elements.
* @example
*
* _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {
* return a + b + c;
* });
* // => [111, 222]
*/
var zipWith = baseRest(function(arrays) {
var length = arrays.length,
iteratee = length > 1 ? arrays[length - 1] : undefined;
iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;
return unzipWith(arrays, iteratee);
});
/*------------------------------------------------------------------------*/
/**
* Creates a `lodash` wrapper instance that wraps `value` with explicit method
* chain sequences enabled. The result of such sequences must be unwrapped
* with `_#value`.
*
* @static
* @memberOf _
* @since 1.3.0
* @category Seq
* @param {*} value The value to wrap.
* @returns {Object} Returns the new `lodash` wrapper instance.
* @example
*
* var users = [
* { 'user': 'barney', 'age': 36 },
* { 'user': 'fred', 'age': 40 },
* { 'user': 'pebbles', 'age': 1 }
* ];
*
* var youngest = _
* .chain(users)
* .sortBy('age')
* .map(function(o) {
* return o.user + ' is ' + o.age;
* })
* .head()
* .value();
* // => 'pebbles is 1'
*/
function chain(value) {
var result = lodash(value);
result.__chain__ = true;
return result;
}
/**
* This method invokes `interceptor` and returns `value`. The interceptor
* is invoked with one argument; (value). The purpose of this method is to
* "tap into" a method chain sequence in order to modify intermediate results.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Seq
* @param {*} value The value to provide to `interceptor`.
* @param {Function} interceptor The function to invoke.
* @returns {*} Returns `value`.
* @example
*
* _([1, 2, 3])
* .tap(function(array) {
* // Mutate input array.
* array.pop();
* })
* .reverse()
* .value();
* // => [2, 1]
*/
function tap(value, interceptor) {
interceptor(value);
return value;
}
/**
* This method is like `_.tap` except that it returns the result of `interceptor`.
* The purpose of this method is to "pass thru" values replacing intermediate
* results in a method chain sequence.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Seq
* @param {*} value The value to provide to `interceptor`.
* @param {Function} interceptor The function to invoke.
* @returns {*} Returns the result of `interceptor`.
* @example
*
* _(' abc ')
* .chain()
* .trim()
* .thru(function(value) {
* return [value];
* })
* .value();
* // => ['abc']
*/
function thru(value, interceptor) {
return interceptor(value);
}
/**
* This method is the wrapper version of `_.at`.
*
* @name at
* @memberOf _
* @since 1.0.0
* @category Seq
* @param {...(string|string[])} [paths] The property paths to pick.
* @returns {Object} Returns the new `lodash` wrapper instance.
* @example
*
* var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
*
* _(object).at(['a[0].b.c', 'a[1]']).value();
* // => [3, 4]
*/
var wrapperAt = flatRest(function(paths) {
var length = paths.length,
start = length ? paths[0] : 0,
value = this.__wrapped__,
interceptor = function(object) { return baseAt(object, paths); };
if (length > 1 || this.__actions__.length ||
!(value instanceof LazyWrapper) || !isIndex(start)) {
return this.thru(interceptor);
}
value = value.slice(start, +start + (length ? 1 : 0));
value.__actions__.push({
'func': thru,
'args': [interceptor],
'thisArg': undefined
});
return new LodashWrapper(value, this.__chain__).thru(function(array) {
if (length && !array.length) {
array.push(undefined);
}
return array;
});
});
/**
* Creates a `lodash` wrapper instance with explicit method chain sequences enabled.
*
* @name chain
* @memberOf _
* @since 0.1.0
* @category Seq
* @returns {Object} Returns the new `lodash` wrapper instance.
* @example
*
* var users = [
* { 'user': 'barney', 'age': 36 },
* { 'user': 'fred', 'age': 40 }
* ];
*
* // A sequence without explicit chaining.
* _(users).head();
* // => { 'user': 'barney', 'age': 36 }
*
* // A sequence with explicit chaining.
* _(users)
* .chain()
* .head()
* .pick('user')
* .value();
* // => { 'user': 'barney' }
*/
function wrapperChain() {
return chain(this);
}
/**
* Executes the chain sequence and returns the wrapped result.
*
* @name commit
* @memberOf _
* @since 3.2.0
* @category Seq
* @returns {Object} Returns the new `lodash` wrapper instance.
* @example
*
* var array = [1, 2];
* var wrapped = _(array).push(3);
*
* console.log(array);
* // => [1, 2]
*
* wrapped = wrapped.commit();
* console.log(array);
* // => [1, 2, 3]
*
* wrapped.last();
* // => 3
*
* console.log(array);
* // => [1, 2, 3]
*/
function wrapperCommit() {
return new LodashWrapper(this.value(), this.__chain__);
}
/**
* Gets the next value on a wrapped object following the
* [iterator protocol](https://mdn.io/iteration_protocols#iterator).
*
* @name next
* @memberOf _
* @since 4.0.0
* @category Seq
* @returns {Object} Returns the next iterator value.
* @example
*
* var wrapped = _([1, 2]);
*
* wrapped.next();
* // => { 'done': false, 'value': 1 }
*
* wrapped.next();
* // => { 'done': false, 'value': 2 }
*
* wrapped.next();
* // => { 'done': true, 'value': undefined }
*/
function wrapperNext() {
if (this.__values__ === undefined) {
this.__values__ = toArray(this.value());
}
var done = this.__index__ >= this.__values__.length,
value = done ? undefined : this.__values__[this.__index__++];
return { 'done': done, 'value': value };
}
/**
* Enables the wrapper to be iterable.
*
* @name Symbol.iterator
* @memberOf _
* @since 4.0.0
* @category Seq
* @returns {Object} Returns the wrapper object.
* @example
*
* var wrapped = _([1, 2]);
*
* wrapped[Symbol.iterator]() === wrapped;
* // => true
*
* Array.from(wrapped);
* // => [1, 2]
*/
function wrapperToIterator() {
return this;
}
/**
* Creates a clone of the chain sequence planting `value` as the wrapped value.
*
* @name plant
* @memberOf _
* @since 3.2.0
* @category Seq
* @param {*} value The value to plant.
* @returns {Object} Returns the new `lodash` wrapper instance.
* @example
*
* function square(n) {
* return n * n;
* }
*
* var wrapped = _([1, 2]).map(square);
* var other = wrapped.plant([3, 4]);
*
* other.value();
* // => [9, 16]
*
* wrapped.value();
* // => [1, 4]
*/
function wrapperPlant(value) {
var result,
parent = this;
while (parent instanceof baseLodash) {
var clone = wrapperClone(parent);
clone.__index__ = 0;
clone.__values__ = undefined;
if (result) {
previous.__wrapped__ = clone;
} else {
result = clone;
}
var previous = clone;
parent = parent.__wrapped__;
}
previous.__wrapped__ = value;
return result;
}
/**
* This method is the wrapper version of `_.reverse`.
*
* **Note:** This method mutates the wrapped array.
*
* @name reverse
* @memberOf _
* @since 0.1.0
* @category Seq
* @returns {Object} Returns the new `lodash` wrapper instance.
* @example
*
* var array = [1, 2, 3];
*
* _(array).reverse().value()
* // => [3, 2, 1]
*
* console.log(array);
* // => [3, 2, 1]
*/
function wrapperReverse() {
var value = this.__wrapped__;
if (value instanceof LazyWrapper) {
var wrapped = value;
if (this.__actions__.length) {
wrapped = new LazyWrapper(this);
}
wrapped = wrapped.reverse();
wrapped.__actions__.push({
'func': thru,
'args': [reverse],
'thisArg': undefined
});
return new LodashWrapper(wrapped, this.__chain__);
}
return this.thru(reverse);
}
/**
* Executes the chain sequence to resolve the unwrapped value.
*
* @name value
* @memberOf _
* @since 0.1.0
* @alias toJSON, valueOf
* @category Seq
* @returns {*} Returns the resolved unwrapped value.
* @example
*
* _([1, 2, 3]).value();
* // => [1, 2, 3]
*/
function wrapperValue() {
return baseWrapperValue(this.__wrapped__, this.__actions__);
}
/*------------------------------------------------------------------------*/
/**
* Creates an object composed of keys generated from the results of running
* each element of `collection` thru `iteratee`. The corresponding value of
* each key is the number of times the key was returned by `iteratee`. The
* iteratee is invoked with one argument: (value).
*
* @static
* @memberOf _
* @since 0.5.0
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} [iteratee=_.identity] The iteratee to transform keys.
* @returns {Object} Returns the composed aggregate object.
* @example
*
* _.countBy([6.1, 4.2, 6.3], Math.floor);
* // => { '4': 1, '6': 2 }
*
* // The `_.property` iteratee shorthand.
* _.countBy(['one', 'two', 'three'], 'length');
* // => { '3': 2, '5': 1 }
*/
var countBy = createAggregator(function(result, value, key) {
if (hasOwnProperty.call(result, key)) {
++result[key];
} else {
baseAssignValue(result, key, 1);
}
});
/**
* Checks if `predicate` returns truthy for **all** elements of `collection`.
* Iteration is stopped once `predicate` returns falsey. The predicate is
* invoked with three arguments: (value, index|key, collection).
*
* **Note:** This method returns `true` for
* [empty collections](https://en.wikipedia.org/wiki/Empty_set) because
* [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of
* elements of empty collections.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} [predicate=_.identity] The function invoked per iteration.
* @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
* @returns {boolean} Returns `true` if all elements pass the predicate check,
* else `false`.
* @example
*
* _.every([true, 1, null, 'yes'], Boolean);
* // => false
*
* var users = [
* { 'user': 'barney', 'age': 36, 'active': false },
* { 'user': 'fred', 'age': 40, 'active': false }
* ];
*
* // The `_.matches` iteratee shorthand.
* _.every(users, { 'user': 'barney', 'active': false });
* // => false
*
* // The `_.matchesProperty` iteratee shorthand.
* _.every(users, ['active', false]);
* // => true
*
* // The `_.property` iteratee shorthand.
* _.every(users, 'active');
* // => false
*/
function every(collection, predicate, guard) {
var func = isArray(collection) ? arrayEvery : baseEvery;
if (guard && isIterateeCall(collection, predicate, guard)) {
predicate = undefined;
}
return func(collection, getIteratee(predicate, 3));
}
/**
* Iterates over elements of `collection`, returning an array of all elements
* `predicate` returns truthy for. The predicate is invoked with three
* arguments: (value, index|key, collection).
*
* **Note:** Unlike `_.remove`, this method returns a new array.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} [predicate=_.identity] The function invoked per iteration.
* @returns {Array} Returns the new filtered array.
* @see _.reject
* @example
*
* var users = [
* { 'user': 'barney', 'age': 36, 'active': true },
* { 'user': 'fred', 'age': 40, 'active': false }
* ];
*
* _.filter(users, function(o) { return !o.active; });
* // => objects for ['fred']
*
* // The `_.matches` iteratee shorthand.
* _.filter(users, { 'age': 36, 'active': true });
* // => objects for ['barney']
*
* // The `_.matchesProperty` iteratee shorthand.
* _.filter(users, ['active', false]);
* // => objects for ['fred']
*
* // The `_.property` iteratee shorthand.
* _.filter(users, 'active');
* // => objects for ['barney']
*/
function filter(collection, predicate) {
var func = isArray(collection) ? arrayFilter : baseFilter;
return func(collection, getIteratee(predicate, 3));
}
/**
* Iterates over elements of `collection`, returning the first element
* `predicate` returns truthy for. The predicate is invoked with three
* arguments: (value, index|key, collection).
*
* @static
* @memberOf _
* @since 0.1.0
* @category Collection
* @param {Array|Object} collection The collection to inspect.
* @param {Function} [predicate=_.identity] The function invoked per iteration.
* @param {number} [fromIndex=0] The index to search from.
* @returns {*} Returns the matched element, else `undefined`.
* @example
*
* var users = [
* { 'user': 'barney', 'age': 36, 'active': true },
* { 'user': 'fred', 'age': 40, 'active': false },
* { 'user': 'pebbles', 'age': 1, 'active': true }
* ];
*
* _.find(users, function(o) { return o.age < 40; });
* // => object for 'barney'
*
* // The `_.matches` iteratee shorthand.
* _.find(users, { 'age': 1, 'active': true });
* // => object for 'pebbles'
*
* // The `_.matchesProperty` iteratee shorthand.
* _.find(users, ['active', false]);
* // => object for 'fred'
*
* // The `_.property` iteratee shorthand.
* _.find(users, 'active');
* // => object for 'barney'
*/
var find = createFind(findIndex);
/**
* This method is like `_.find` except that it iterates over elements of
* `collection` from right to left.
*
* @static
* @memberOf _
* @since 2.0.0
* @category Collection
* @param {Array|Object} collection The collection to inspect.
* @param {Function} [predicate=_.identity] The function invoked per iteration.
* @param {number} [fromIndex=collection.length-1] The index to search from.
* @returns {*} Returns the matched element, else `undefined`.
* @example
*
* _.findLast([1, 2, 3, 4], function(n) {
* return n % 2 == 1;
* });
* // => 3
*/
var findLast = createFind(findLastIndex);
/**
* Creates a flattened array of values by running each element in `collection`
* thru `iteratee` and flattening the mapped results. The iteratee is invoked
* with three arguments: (value, index|key, collection).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @returns {Array} Returns the new flattened array.
* @example
*
* function duplicate(n) {
* return [n, n];
* }
*
* _.flatMap([1, 2], duplicate);
* // => [1, 1, 2, 2]
*/
function flatMap(collection, iteratee) {
return baseFlatten(map(collection, iteratee), 1);
}
/**
* This method is like `_.flatMap` except that it recursively flattens the
* mapped results.
*
* @static
* @memberOf _
* @since 4.7.0
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @returns {Array} Returns the new flattened array.
* @example
*
* function duplicate(n) {
* return [[[n, n]]];
* }
*
* _.flatMapDeep([1, 2], duplicate);
* // => [1, 1, 2, 2]
*/
function flatMapDeep(collection, iteratee) {
return baseFlatten(map(collection, iteratee), INFINITY);
}
/**
* This method is like `_.flatMap` except that it recursively flattens the
* mapped results up to `depth` times.
*
* @static
* @memberOf _
* @since 4.7.0
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @param {number} [depth=1] The maximum recursion depth.
* @returns {Array} Returns the new flattened array.
* @example
*
* function duplicate(n) {
* return [[[n, n]]];
* }
*
* _.flatMapDepth([1, 2], duplicate, 2);
* // => [[1, 1], [2, 2]]
*/
function flatMapDepth(collection, iteratee, depth) {
depth = depth === undefined ? 1 : toInteger(depth);
return baseFlatten(map(collection, iteratee), depth);
}
/**
* Iterates over elements of `collection` and invokes `iteratee` for each element.
* The iteratee is invoked with three arguments: (value, index|key, collection).
* Iteratee functions may exit iteration early by explicitly returning `false`.
*
* **Note:** As with other "Collections" methods, objects with a "length"
* property are iterated like arrays. To avoid this behavior use `_.forIn`
* or `_.forOwn` for object iteration.
*
* @static
* @memberOf _
* @since 0.1.0
* @alias each
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @returns {Array|Object} Returns `collection`.
* @see _.forEachRight
* @example
*
* _.forEach([1, 2], function(value) {
* console.log(value);
* });
* // => Logs `1` then `2`.
*
* _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {
* console.log(key);
* });
* // => Logs 'a' then 'b' (iteration order is not guaranteed).
*/
function forEach(collection, iteratee) {
var func = isArray(collection) ? arrayEach : baseEach;
return func(collection, getIteratee(iteratee, 3));
}
/**
* This method is like `_.forEach` except that it iterates over elements of
* `collection` from right to left.
*
* @static
* @memberOf _
* @since 2.0.0
* @alias eachRight
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @returns {Array|Object} Returns `collection`.
* @see _.forEach
* @example
*
* _.forEachRight([1, 2], function(value) {
* console.log(value);
* });
* // => Logs `2` then `1`.
*/
function forEachRight(collection, iteratee) {
var func = isArray(collection) ? arrayEachRight : baseEachRight;
return func(collection, getIteratee(iteratee, 3));
}
/**
* Creates an object composed of keys generated from the results of running
* each element of `collection` thru `iteratee`. The order of grouped values
* is determined by the order they occur in `collection`. The corresponding
* value of each key is an array of elements responsible for generating the
* key. The iteratee is invoked with one argument: (value).
*
* @static
* @memberOf _
* @since 0.1.0
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} [iteratee=_.identity] The iteratee to transform keys.
* @returns {Object} Returns the composed aggregate object.
* @example
*
* _.groupBy([6.1, 4.2, 6.3], Math.floor);
* // => { '4': [4.2], '6': [6.1, 6.3] }
*
* // The `_.property` iteratee shorthand.
* _.groupBy(['one', 'two', 'three'], 'length');
* // => { '3': ['one', 'two'], '5': ['three'] }
*/
var groupBy = createAggregator(function(result, value, key) {
if (hasOwnProperty.call(result, key)) {
result[key].push(value);
} else {
baseAssignValue(result, key, [value]);
}
});
/**
* Checks if `value` is in `collection`. If `collection` is a string, it's
* checked for a substring of `value`, otherwise
* [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
* is used for equality comparisons. If `fromIndex` is negative, it's used as
* the offset from the end of `collection`.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Collection
* @param {Array|Object|string} collection The collection to inspect.
* @param {*} value The value to search for.
* @param {number} [fromIndex=0] The index to search from.
* @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
* @returns {boolean} Returns `true` if `value` is found, else `false`.
* @example
*
* _.includes([1, 2, 3], 1);
* // => true
*
* _.includes([1, 2, 3], 1, 2);
* // => false
*
* _.includes({ 'a': 1, 'b': 2 }, 1);
* // => true
*
* _.includes('abcd', 'bc');
* // => true
*/
function includes(collection, value, fromIndex, guard) {
collection = isArrayLike(collection) ? collection : values(collection);
fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;
var length = collection.length;
if (fromIndex < 0) {
fromIndex = nativeMax(length + fromIndex, 0);
}
return isString(collection)
? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)
: (!!length && baseIndexOf(collection, value, fromIndex) > -1);
}
/**
* Invokes the method at `path` of each element in `collection`, returning
* an array of the results of each invoked method. Any additional arguments
* are provided to each invoked method. If `path` is a function, it's invoked
* for, and `this` bound to, each element in `collection`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Array|Function|string} path The path of the method to invoke or
* the function invoked per iteration.
* @param {...*} [args] The arguments to invoke each method with.
* @returns {Array} Returns the array of results.
* @example
*
* _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');
* // => [[1, 5, 7], [1, 2, 3]]
*
* _.invokeMap([123, 456], String.prototype.split, '');
* // => [['1', '2', '3'], ['4', '5', '6']]
*/
var invokeMap = baseRest(function(collection, path, args) {
var index = -1,
isFunc = typeof path == 'function',
result = isArrayLike(collection) ? Array(collection.length) : [];
baseEach(collection, function(value) {
result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);
});
return result;
});
/**
* Creates an object composed of keys generated from the results of running
* each element of `collection` thru `iteratee`. The corresponding value of
* each key is the last element responsible for generating the key. The
* iteratee is invoked with one argument: (value).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} [iteratee=_.identity] The iteratee to transform keys.
* @returns {Object} Returns the composed aggregate object.
* @example
*
* var array = [
* { 'dir': 'left', 'code': 97 },
* { 'dir': 'right', 'code': 100 }
* ];
*
* _.keyBy(array, function(o) {
* return String.fromCharCode(o.code);
* });
* // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
*
* _.keyBy(array, 'dir');
* // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }
*/
var keyBy = createAggregator(function(result, value, key) {
baseAssignValue(result, key, value);
});
/**
* Creates an array of values by running each element in `collection` thru
* `iteratee`. The iteratee is invoked with three arguments:
* (value, index|key, collection).
*
* Many lodash methods are guarded to work as iteratees for methods like
* `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.
*
* The guarded methods are:
* `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,
* `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,
* `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,
* `template`, `trim`, `trimEnd`, `trimStart`, and `words`
*
* @static
* @memberOf _
* @since 0.1.0
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @returns {Array} Returns the new mapped array.
* @example
*
* function square(n) {
* return n * n;
* }
*
* _.map([4, 8], square);
* // => [16, 64]
*
* _.map({ 'a': 4, 'b': 8 }, square);
* // => [16, 64] (iteration order is not guaranteed)
*
* var users = [
* { 'user': 'barney' },
* { 'user': 'fred' }
* ];
*
* // The `_.property` iteratee shorthand.
* _.map(users, 'user');
* // => ['barney', 'fred']
*/
function map(collection, iteratee) {
var func = isArray(collection) ? arrayMap : baseMap;
return func(collection, getIteratee(iteratee, 3));
}
/**
* This method is like `_.sortBy` except that it allows specifying the sort
* orders of the iteratees to sort by. If `orders` is unspecified, all values
* are sorted in ascending order. Otherwise, specify an order of "desc" for
* descending or "asc" for ascending sort order of corresponding values.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]
* The iteratees to sort by.
* @param {string[]} [orders] The sort orders of `iteratees`.
* @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
* @returns {Array} Returns the new sorted array.
* @example
*
* var users = [
* { 'user': 'fred', 'age': 48 },
* { 'user': 'barney', 'age': 34 },
* { 'user': 'fred', 'age': 40 },
* { 'user': 'barney', 'age': 36 }
* ];
*
* // Sort by `user` in ascending order and by `age` in descending order.
* _.orderBy(users, ['user', 'age'], ['asc', 'desc']);
* // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
*/
function orderBy(collection, iteratees, orders, guard) {
if (collection == null) {
return [];
}
if (!isArray(iteratees)) {
iteratees = iteratees == null ? [] : [iteratees];
}
orders = guard ? undefined : orders;
if (!isArray(orders)) {
orders = orders == null ? [] : [orders];
}
return baseOrderBy(collection, iteratees, orders);
}
/**
* Creates an array of elements split into two groups, the first of which
* contains elements `predicate` returns truthy for, the second of which
* contains elements `predicate` returns falsey for. The predicate is
* invoked with one argument: (value).
*
* @static
* @memberOf _
* @since 3.0.0
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} [predicate=_.identity] The function invoked per iteration.
* @returns {Array} Returns the array of grouped elements.
* @example
*
* var users = [
* { 'user': 'barney', 'age': 36, 'active': false },
* { 'user': 'fred', 'age': 40, 'active': true },
* { 'user': 'pebbles', 'age': 1, 'active': false }
* ];
*
* _.partition(users, function(o) { return o.active; });
* // => objects for [['fred'], ['barney', 'pebbles']]
*
* // The `_.matches` iteratee shorthand.
* _.partition(users, { 'age': 1, 'active': false });
* // => objects for [['pebbles'], ['barney', 'fred']]
*
* // The `_.matchesProperty` iteratee shorthand.
* _.partition(users, ['active', false]);
* // => objects for [['barney', 'pebbles'], ['fred']]
*
* // The `_.property` iteratee shorthand.
* _.partition(users, 'active');
* // => objects for [['fred'], ['barney', 'pebbles']]
*/
var partition = createAggregator(function(result, value, key) {
result[key ? 0 : 1].push(value);
}, function() { return [[], []]; });
/**
* Reduces `collection` to a value which is the accumulated result of running
* each element in `collection` thru `iteratee`, where each successive
* invocation is supplied the return value of the previous. If `accumulator`
* is not given, the first element of `collection` is used as the initial
* value. The iteratee is invoked with four arguments:
* (accumulator, value, index|key, collection).
*
* Many lodash methods are guarded to work as iteratees for methods like
* `_.reduce`, `_.reduceRight`, and `_.transform`.
*
* The guarded methods are:
* `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,
* and `sortBy`
*
* @static
* @memberOf _
* @since 0.1.0
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @param {*} [accumulator] The initial value.
* @returns {*} Returns the accumulated value.
* @see _.reduceRight
* @example
*
* _.reduce([1, 2], function(sum, n) {
* return sum + n;
* }, 0);
* // => 3
*
* _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
* (result[value] || (result[value] = [])).push(key);
* return result;
* }, {});
* // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)
*/
function reduce(collection, iteratee, accumulator) {
var func = isArray(collection) ? arrayReduce : baseReduce,
initAccum = arguments.length < 3;
return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);
}
/**
* This method is like `_.reduce` except that it iterates over elements of
* `collection` from right to left.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @param {*} [accumulator] The initial value.
* @returns {*} Returns the accumulated value.
* @see _.reduce
* @example
*
* var array = [[0, 1], [2, 3], [4, 5]];
*
* _.reduceRight(array, function(flattened, other) {
* return flattened.concat(other);
* }, []);
* // => [4, 5, 2, 3, 0, 1]
*/
function reduceRight(collection, iteratee, accumulator) {
var func = isArray(collection) ? arrayReduceRight : baseReduce,
initAccum = arguments.length < 3;
return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);
}
/**
* The opposite of `_.filter`; this method returns the elements of `collection`
* that `predicate` does **not** return truthy for.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} [predicate=_.identity] The function invoked per iteration.
* @returns {Array} Returns the new filtered array.
* @see _.filter
* @example
*
* var users = [
* { 'user': 'barney', 'age': 36, 'active': false },
* { 'user': 'fred', 'age': 40, 'active': true }
* ];
*
* _.reject(users, function(o) { return !o.active; });
* // => objects for ['fred']
*
* // The `_.matches` iteratee shorthand.
* _.reject(users, { 'age': 40, 'active': true });
* // => objects for ['barney']
*
* // The `_.matchesProperty` iteratee shorthand.
* _.reject(users, ['active', false]);
* // => objects for ['fred']
*
* // The `_.property` iteratee shorthand.
* _.reject(users, 'active');
* // => objects for ['barney']
*/
function reject(collection, predicate) {
var func = isArray(collection) ? arrayFilter : baseFilter;
return func(collection, negate(getIteratee(predicate, 3)));
}
/**
* Gets a random element from `collection`.
*
* @static
* @memberOf _
* @since 2.0.0
* @category Collection
* @param {Array|Object} collection The collection to sample.
* @returns {*} Returns the random element.
* @example
*
* _.sample([1, 2, 3, 4]);
* // => 2
*/
function sample(collection) {
var func = isArray(collection) ? arraySample : baseSample;
return func(collection);
}
/**
* Gets `n` random elements at unique keys from `collection` up to the
* size of `collection`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Collection
* @param {Array|Object} collection The collection to sample.
* @param {number} [n=1] The number of elements to sample.
* @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
* @returns {Array} Returns the random elements.
* @example
*
* _.sampleSize([1, 2, 3], 2);
* // => [3, 1]
*
* _.sampleSize([1, 2, 3], 4);
* // => [2, 3, 1]
*/
function sampleSize(collection, n, guard) {
if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {
n = 1;
} else {
n = toInteger(n);
}
var func = isArray(collection) ? arraySampleSize : baseSampleSize;
return func(collection, n);
}
/**
* Creates an array of shuffled values, using a version of the
* [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).
*
* @static
* @memberOf _
* @since 0.1.0
* @category Collection
* @param {Array|Object} collection The collection to shuffle.
* @returns {Array} Returns the new shuffled array.
* @example
*
* _.shuffle([1, 2, 3, 4]);
* // => [4, 1, 3, 2]
*/
function shuffle(collection) {
var func = isArray(collection) ? arrayShuffle : baseShuffle;
return func(collection);
}
/**
* Gets the size of `collection` by returning its length for array-like
* values or the number of own enumerable string keyed properties for objects.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Collection
* @param {Array|Object|string} collection The collection to inspect.
* @returns {number} Returns the collection size.
* @example
*
* _.size([1, 2, 3]);
* // => 3
*
* _.size({ 'a': 1, 'b': 2 });
* // => 2
*
* _.size('pebbles');
* // => 7
*/
function size(collection) {
if (collection == null) {
return 0;
}
if (isArrayLike(collection)) {
return isString(collection) ? stringSize(collection) : collection.length;
}
var tag = getTag(collection);
if (tag == mapTag || tag == setTag) {
return collection.size;
}
return baseKeys(collection).length;
}
/**
* Checks if `predicate` returns truthy for **any** element of `collection`.
* Iteration is stopped once `predicate` returns truthy. The predicate is
* invoked with three arguments: (value, index|key, collection).
*
* @static
* @memberOf _
* @since 0.1.0
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} [predicate=_.identity] The function invoked per iteration.
* @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
* @returns {boolean} Returns `true` if any element passes the predicate check,
* else `false`.
* @example
*
* _.some([null, 0, 'yes', false], Boolean);
* // => true
*
* var users = [
* { 'user': 'barney', 'active': true },
* { 'user': 'fred', 'active': false }
* ];
*
* // The `_.matches` iteratee shorthand.
* _.some(users, { 'user': 'barney', 'active': false });
* // => false
*
* // The `_.matchesProperty` iteratee shorthand.
* _.some(users, ['active', false]);
* // => true
*
* // The `_.property` iteratee shorthand.
* _.some(users, 'active');
* // => true
*/
function some(collection, predicate, guard) {
var func = isArray(collection) ? arraySome : baseSome;
if (guard && isIterateeCall(collection, predicate, guard)) {
predicate = undefined;
}
return func(collection, getIteratee(predicate, 3));
}
/**
* Creates an array of elements, sorted in ascending order by the results of
* running each element in a collection thru each iteratee. This method
* performs a stable sort, that is, it preserves the original sort order of
* equal elements. The iteratees are invoked with one argument: (value).
*
* @static
* @memberOf _
* @since 0.1.0
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {...(Function|Function[])} [iteratees=[_.identity]]
* The iteratees to sort by.
* @returns {Array} Returns the new sorted array.
* @example
*
* var users = [
* { 'user': 'fred', 'age': 48 },
* { 'user': 'barney', 'age': 36 },
* { 'user': 'fred', 'age': 40 },
* { 'user': 'barney', 'age': 34 }
* ];
*
* _.sortBy(users, [function(o) { return o.user; }]);
* // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
*
* _.sortBy(users, ['user', 'age']);
* // => objects for [['barney', 34], ['barney', 36], ['fred', 40], ['fred', 48]]
*/
var sortBy = baseRest(function(collection, iteratees) {
if (collection == null) {
return [];
}
var length = iteratees.length;
if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {
iteratees = [];
} else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {
iteratees = [iteratees[0]];
}
return baseOrderBy(collection, baseFlatten(iteratees, 1), []);
});
/*------------------------------------------------------------------------*/
/**
* Gets the timestamp of the number of milliseconds that have elapsed since
* the Unix epoch (1 January 1970 00:00:00 UTC).
*
* @static
* @memberOf _
* @since 2.4.0
* @category Date
* @returns {number} Returns the timestamp.
* @example
*
* _.defer(function(stamp) {
* console.log(_.now() - stamp);
* }, _.now());
* // => Logs the number of milliseconds it took for the deferred invocation.
*/
var now = ctxNow || function() {
return root.Date.now();
};
/*------------------------------------------------------------------------*/
/**
* The opposite of `_.before`; this method creates a function that invokes
* `func` once it's called `n` or more times.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Function
* @param {number} n The number of calls before `func` is invoked.
* @param {Function} func The function to restrict.
* @returns {Function} Returns the new restricted function.
* @example
*
* var saves = ['profile', 'settings'];
*
* var done = _.after(saves.length, function() {
* console.log('done saving!');
* });
*
* _.forEach(saves, function(type) {
* asyncSave({ 'type': type, 'complete': done });
* });
* // => Logs 'done saving!' after the two async saves have completed.
*/
function after(n, func) {
if (typeof func != 'function') {
throw new TypeError(FUNC_ERROR_TEXT);
}
n = toInteger(n);
return function() {
if (--n < 1) {
return func.apply(this, arguments);
}
};
}
/**
* Creates a function that invokes `func`, with up to `n` arguments,
* ignoring any additional arguments.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Function
* @param {Function} func The function to cap arguments for.
* @param {number} [n=func.length] The arity cap.
* @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
* @returns {Function} Returns the new capped function.
* @example
*
* _.map(['6', '8', '10'], _.ary(parseInt, 1));
* // => [6, 8, 10]
*/
function ary(func, n, guard) {
n = guard ? undefined : n;
n = (func && n == null) ? func.length : n;
return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);
}
/**
* Creates a function that invokes `func`, with the `this` binding and arguments
* of the created function, while it's called less than `n` times. Subsequent
* calls to the created function return the result of the last `func` invocation.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Function
* @param {number} n The number of calls at which `func` is no longer invoked.
* @param {Function} func The function to restrict.
* @returns {Function} Returns the new restricted function.
* @example
*
* jQuery(element).on('click', _.before(5, addContactToList));
* // => Allows adding up to 4 contacts to the list.
*/
function before(n, func) {
var result;
if (typeof func != 'function') {
throw new TypeError(FUNC_ERROR_TEXT);
}
n = toInteger(n);
return function() {
if (--n > 0) {
result = func.apply(this, arguments);
}
if (n <= 1) {
func = undefined;
}
return result;
};
}
/**
* Creates a function that invokes `func` with the `this` binding of `thisArg`
* and `partials` prepended to the arguments it receives.
*
* The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,
* may be used as a placeholder for partially applied arguments.
*
* **Note:** Unlike native `Function#bind`, this method doesn't set the "length"
* property of bound functions.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Function
* @param {Function} func The function to bind.
* @param {*} thisArg The `this` binding of `func`.
* @param {...*} [partials] The arguments to be partially applied.
* @returns {Function} Returns the new bound function.
* @example
*
* function greet(greeting, punctuation) {
* return greeting + ' ' + this.user + punctuation;
* }
*
* var object = { 'user': 'fred' };
*
* var bound = _.bind(greet, object, 'hi');
* bound('!');
* // => 'hi fred!'
*
* // Bound with placeholders.
* var bound = _.bind(greet, object, _, '!');
* bound('hi');
* // => 'hi fred!'
*/
var bind = baseRest(function(func, thisArg, partials) {
var bitmask = WRAP_BIND_FLAG;
if (partials.length) {
var holders = replaceHolders(partials, getHolder(bind));
bitmask |= WRAP_PARTIAL_FLAG;
}
return createWrap(func, bitmask, thisArg, partials, holders);
});
/**
* Creates a function that invokes the method at `object[key]` with `partials`
* prepended to the arguments it receives.
*
* This method differs from `_.bind` by allowing bound functions to reference
* methods that may be redefined or don't yet exist. See
* [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)
* for more details.
*
* The `_.bindKey.placeholder` value, which defaults to `_` in monolithic
* builds, may be used as a placeholder for partially applied arguments.
*
* @static
* @memberOf _
* @since 0.10.0
* @category Function
* @param {Object} object The object to invoke the method on.
* @param {string} key The key of the method.
* @param {...*} [partials] The arguments to be partially applied.
* @returns {Function} Returns the new bound function.
* @example
*
* var object = {
* 'user': 'fred',
* 'greet': function(greeting, punctuation) {
* return greeting + ' ' + this.user + punctuation;
* }
* };
*
* var bound = _.bindKey(object, 'greet', 'hi');
* bound('!');
* // => 'hi fred!'
*
* object.greet = function(greeting, punctuation) {
* return greeting + 'ya ' + this.user + punctuation;
* };
*
* bound('!');
* // => 'hiya fred!'
*
* // Bound with placeholders.
* var bound = _.bindKey(object, 'greet', _, '!');
* bound('hi');
* // => 'hiya fred!'
*/
var bindKey = baseRest(function(object, key, partials) {
var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;
if (partials.length) {
var holders = replaceHolders(partials, getHolder(bindKey));
bitmask |= WRAP_PARTIAL_FLAG;
}
return createWrap(key, bitmask, object, partials, holders);
});
/**
* Creates a function that accepts arguments of `func` and either invokes
* `func` returning its result, if at least `arity` number of arguments have
* been provided, or returns a function that accepts the remaining `func`
* arguments, and so on. The arity of `func` may be specified if `func.length`
* is not sufficient.
*
* The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,
* may be used as a placeholder for provided arguments.
*
* **Note:** This method doesn't set the "length" property of curried functions.
*
* @static
* @memberOf _
* @since 2.0.0
* @category Function
* @param {Function} func The function to curry.
* @param {number} [arity=func.length] The arity of `func`.
* @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
* @returns {Function} Returns the new curried function.
* @example
*
* var abc = function(a, b, c) {
* return [a, b, c];
* };
*
* var curried = _.curry(abc);
*
* curried(1)(2)(3);
* // => [1, 2, 3]
*
* curried(1, 2)(3);
* // => [1, 2, 3]
*
* curried(1, 2, 3);
* // => [1, 2, 3]
*
* // Curried with placeholders.
* curried(1)(_, 3)(2);
* // => [1, 2, 3]
*/
function curry(func, arity, guard) {
arity = guard ? undefined : arity;
var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
result.placeholder = curry.placeholder;
return result;
}
/**
* This method is like `_.curry` except that arguments are applied to `func`
* in the manner of `_.partialRight` instead of `_.partial`.
*
* The `_.curryRight.placeholder` value, which defaults to `_` in monolithic
* builds, may be used as a placeholder for provided arguments.
*
* **Note:** This method doesn't set the "length" property of curried functions.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Function
* @param {Function} func The function to curry.
* @param {number} [arity=func.length] The arity of `func`.
* @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
* @returns {Function} Returns the new curried function.
* @example
*
* var abc = function(a, b, c) {
* return [a, b, c];
* };
*
* var curried = _.curryRight(abc);
*
* curried(3)(2)(1);
* // => [1, 2, 3]
*
* curried(2, 3)(1);
* // => [1, 2, 3]
*
* curried(1, 2, 3);
* // => [1, 2, 3]
*
* // Curried with placeholders.
* curried(3)(1, _)(2);
* // => [1, 2, 3]
*/
function curryRight(func, arity, guard) {
arity = guard ? undefined : arity;
var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
result.placeholder = curryRight.placeholder;
return result;
}
/**
* Creates a debounced function that delays invoking `func` until after `wait`
* milliseconds have elapsed since the last time the debounced function was
* invoked. The debounced function comes with a `cancel` method to cancel
* delayed `func` invocations and a `flush` method to immediately invoke them.
* Provide `options` to indicate whether `func` should be invoked on the
* leading and/or trailing edge of the `wait` timeout. The `func` is invoked
* with the last arguments provided to the debounced function. Subsequent
* calls to the debounced function return the result of the last `func`
* invocation.
*
* **Note:** If `leading` and `trailing` options are `true`, `func` is
* invoked on the trailing edge of the timeout only if the debounced function
* is invoked more than once during the `wait` timeout.
*
* If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
* until to the next tick, similar to `setTimeout` with a timeout of `0`.
*
* See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
* for details over the differences between `_.debounce` and `_.throttle`.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Function
* @param {Function} func The function to debounce.
* @param {number} [wait=0] The number of milliseconds to delay.
* @param {Object} [options={}] The options object.
* @param {boolean} [options.leading=false]
* Specify invoking on the leading edge of the timeout.
* @param {number} [options.maxWait]
* The maximum time `func` is allowed to be delayed before it's invoked.
* @param {boolean} [options.trailing=true]
* Specify invoking on the trailing edge of the timeout.
* @returns {Function} Returns the new debounced function.
* @example
*
* // Avoid costly calculations while the window size is in flux.
* jQuery(window).on('resize', _.debounce(calculateLayout, 150));
*
* // Invoke `sendMail` when clicked, debouncing subsequent calls.
* jQuery(element).on('click', _.debounce(sendMail, 300, {
* 'leading': true,
* 'trailing': false
* }));
*
* // Ensure `batchLog` is invoked once after 1 second of debounced calls.
* var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });
* var source = new EventSource('/stream');
* jQuery(source).on('message', debounced);
*
* // Cancel the trailing debounced invocation.
* jQuery(window).on('popstate', debounced.cancel);
*/
function debounce(func, wait, options) {
var lastArgs,
lastThis,
maxWait,
result,
timerId,
lastCallTime,
lastInvokeTime = 0,
leading = false,
maxing = false,
trailing = true;
if (typeof func != 'function') {
throw new TypeError(FUNC_ERROR_TEXT);
}
wait = toNumber(wait) || 0;
if (isObject(options)) {
leading = !!options.leading;
maxing = 'maxWait' in options;
maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;
trailing = 'trailing' in options ? !!options.trailing : trailing;
}
function invokeFunc(time) {
var args = lastArgs,
thisArg = lastThis;
lastArgs = lastThis = undefined;
lastInvokeTime = time;
result = func.apply(thisArg, args);
return result;
}
function leadingEdge(time) {
// Reset any `maxWait` timer.
lastInvokeTime = time;
// Start the timer for the trailing edge.
timerId = setTimeout(timerExpired, wait);
// Invoke the leading edge.
return leading ? invokeFunc(time) : result;
}
function remainingWait(time) {
var timeSinceLastCall = time - lastCallTime,
timeSinceLastInvoke = time - lastInvokeTime,
timeWaiting = wait - timeSinceLastCall;
return maxing
? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)
: timeWaiting;
}
function shouldInvoke(time) {
var timeSinceLastCall = time - lastCallTime,
timeSinceLastInvoke = time - lastInvokeTime;
// Either this is the first call, activity has stopped and we're at the
// trailing edge, the system time has gone backwards and we're treating
// it as the trailing edge, or we've hit the `maxWait` limit.
return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||
(timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));
}
function timerExpired() {
var time = now();
if (shouldInvoke(time)) {
return trailingEdge(time);
}
// Restart the timer.
timerId = setTimeout(timerExpired, remainingWait(time));
}
function trailingEdge(time) {
timerId = undefined;
// Only invoke if we have `lastArgs` which means `func` has been
// debounced at least once.
if (trailing && lastArgs) {
return invokeFunc(time);
}
lastArgs = lastThis = undefined;
return result;
}
function cancel() {
if (timerId !== undefined) {
clearTimeout(timerId);
}
lastInvokeTime = 0;
lastArgs = lastCallTime = lastThis = timerId = undefined;
}
function flush() {
return timerId === undefined ? result : trailingEdge(now());
}
function debounced() {
var time = now(),
isInvoking = shouldInvoke(time);
lastArgs = arguments;
lastThis = this;
lastCallTime = time;
if (isInvoking) {
if (timerId === undefined) {
return leadingEdge(lastCallTime);
}
if (maxing) {
// Handle invocations in a tight loop.
timerId = setTimeout(timerExpired, wait);
return invokeFunc(lastCallTime);
}
}
if (timerId === undefined) {
timerId = setTimeout(timerExpired, wait);
}
return result;
}
debounced.cancel = cancel;
debounced.flush = flush;
return debounced;
}
/**
* Defers invoking the `func` until the current call stack has cleared. Any
* additional arguments are provided to `func` when it's invoked.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Function
* @param {Function} func The function to defer.
* @param {...*} [args] The arguments to invoke `func` with.
* @returns {number} Returns the timer id.
* @example
*
* _.defer(function(text) {
* console.log(text);
* }, 'deferred');
* // => Logs 'deferred' after one millisecond.
*/
var defer = baseRest(function(func, args) {
return baseDelay(func, 1, args);
});
/**
* Invokes `func` after `wait` milliseconds. Any additional arguments are
* provided to `func` when it's invoked.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Function
* @param {Function} func The function to delay.
* @param {number} wait The number of milliseconds to delay invocation.
* @param {...*} [args] The arguments to invoke `func` with.
* @returns {number} Returns the timer id.
* @example
*
* _.delay(function(text) {
* console.log(text);
* }, 1000, 'later');
* // => Logs 'later' after one second.
*/
var delay = baseRest(function(func, wait, args) {
return baseDelay(func, toNumber(wait) || 0, args);
});
/**
* Creates a function that invokes `func` with arguments reversed.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Function
* @param {Function} func The function to flip arguments for.
* @returns {Function} Returns the new flipped function.
* @example
*
* var flipped = _.flip(function() {
* return _.toArray(arguments);
* });
*
* flipped('a', 'b', 'c', 'd');
* // => ['d', 'c', 'b', 'a']
*/
function flip(func) {
return createWrap(func, WRAP_FLIP_FLAG);
}
/**
* Creates a function that memoizes the result of `func`. If `resolver` is
* provided, it determines the cache key for storing the result based on the
* arguments provided to the memoized function. By default, the first argument
* provided to the memoized function is used as the map cache key. The `func`
* is invoked with the `this` binding of the memoized function.
*
* **Note:** The cache is exposed as the `cache` property on the memoized
* function. Its creation may be customized by replacing the `_.memoize.Cache`
* constructor with one whose instances implement the
* [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)
* method interface of `clear`, `delete`, `get`, `has`, and `set`.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Function
* @param {Function} func The function to have its output memoized.
* @param {Function} [resolver] The function to resolve the cache key.
* @returns {Function} Returns the new memoized function.
* @example
*
* var object = { 'a': 1, 'b': 2 };
* var other = { 'c': 3, 'd': 4 };
*
* var values = _.memoize(_.values);
* values(object);
* // => [1, 2]
*
* values(other);
* // => [3, 4]
*
* object.a = 2;
* values(object);
* // => [1, 2]
*
* // Modify the result cache.
* values.cache.set(object, ['a', 'b']);
* values(object);
* // => ['a', 'b']
*
* // Replace `_.memoize.Cache`.
* _.memoize.Cache = WeakMap;
*/
function memoize(func, resolver) {
if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {
throw new TypeError(FUNC_ERROR_TEXT);
}
var memoized = function() {
var args = arguments,
key = resolver ? resolver.apply(this, args) : args[0],
cache = memoized.cache;
if (cache.has(key)) {
return cache.get(key);
}
var result = func.apply(this, args);
memoized.cache = cache.set(key, result) || cache;
return result;
};
memoized.cache = new (memoize.Cache || MapCache);
return memoized;
}
// Expose `MapCache`.
memoize.Cache = MapCache;
/**
* Creates a function that negates the result of the predicate `func`. The
* `func` predicate is invoked with the `this` binding and arguments of the
* created function.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Function
* @param {Function} predicate The predicate to negate.
* @returns {Function} Returns the new negated function.
* @example
*
* function isEven(n) {
* return n % 2 == 0;
* }
*
* _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));
* // => [1, 3, 5]
*/
function negate(predicate) {
if (typeof predicate != 'function') {
throw new TypeError(FUNC_ERROR_TEXT);
}
return function() {
var args = arguments;
switch (args.length) {
case 0: return !predicate.call(this);
case 1: return !predicate.call(this, args[0]);
case 2: return !predicate.call(this, args[0], args[1]);
case 3: return !predicate.call(this, args[0], args[1], args[2]);
}
return !predicate.apply(this, args);
};
}
/**
* Creates a function that is restricted to invoking `func` once. Repeat calls
* to the function return the value of the first invocation. The `func` is
* invoked with the `this` binding and arguments of the created function.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Function
* @param {Function} func The function to restrict.
* @returns {Function} Returns the new restricted function.
* @example
*
* var initialize = _.once(createApplication);
* initialize();
* initialize();
* // => `createApplication` is invoked once
*/
function once(func) {
return before(2, func);
}
/**
* Creates a function that invokes `func` with its arguments transformed.
*
* @static
* @since 4.0.0
* @memberOf _
* @category Function
* @param {Function} func The function to wrap.
* @param {...(Function|Function[])} [transforms=[_.identity]]
* The argument transforms.
* @returns {Function} Returns the new function.
* @example
*
* function doubled(n) {
* return n * 2;
* }
*
* function square(n) {
* return n * n;
* }
*
* var func = _.overArgs(function(x, y) {
* return [x, y];
* }, [square, doubled]);
*
* func(9, 3);
* // => [81, 6]
*
* func(10, 5);
* // => [100, 10]
*/
var overArgs = castRest(function(func, transforms) {
transforms = (transforms.length == 1 && isArray(transforms[0]))
? arrayMap(transforms[0], baseUnary(getIteratee()))
: arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));
var funcsLength = transforms.length;
return baseRest(function(args) {
var index = -1,
length = nativeMin(args.length, funcsLength);
while (++index < length) {
args[index] = transforms[index].call(this, args[index]);
}
return apply(func, this, args);
});
});
/**
* Creates a function that invokes `func` with `partials` prepended to the
* arguments it receives. This method is like `_.bind` except it does **not**
* alter the `this` binding.
*
* The `_.partial.placeholder` value, which defaults to `_` in monolithic
* builds, may be used as a placeholder for partially applied arguments.
*
* **Note:** This method doesn't set the "length" property of partially
* applied functions.
*
* @static
* @memberOf _
* @since 0.2.0
* @category Function
* @param {Function} func The function to partially apply arguments to.
* @param {...*} [partials] The arguments to be partially applied.
* @returns {Function} Returns the new partially applied function.
* @example
*
* function greet(greeting, name) {
* return greeting + ' ' + name;
* }
*
* var sayHelloTo = _.partial(greet, 'hello');
* sayHelloTo('fred');
* // => 'hello fred'
*
* // Partially applied with placeholders.
* var greetFred = _.partial(greet, _, 'fred');
* greetFred('hi');
* // => 'hi fred'
*/
var partial = baseRest(function(func, partials) {
var holders = replaceHolders(partials, getHolder(partial));
return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);
});
/**
* This method is like `_.partial` except that partially applied arguments
* are appended to the arguments it receives.
*
* The `_.partialRight.placeholder` value, which defaults to `_` in monolithic
* builds, may be used as a placeholder for partially applied arguments.
*
* **Note:** This method doesn't set the "length" property of partially
* applied functions.
*
* @static
* @memberOf _
* @since 1.0.0
* @category Function
* @param {Function} func The function to partially apply arguments to.
* @param {...*} [partials] The arguments to be partially applied.
* @returns {Function} Returns the new partially applied function.
* @example
*
* function greet(greeting, name) {
* return greeting + ' ' + name;
* }
*
* var greetFred = _.partialRight(greet, 'fred');
* greetFred('hi');
* // => 'hi fred'
*
* // Partially applied with placeholders.
* var sayHelloTo = _.partialRight(greet, 'hello', _);
* sayHelloTo('fred');
* // => 'hello fred'
*/
var partialRight = baseRest(function(func, partials) {
var holders = replaceHolders(partials, getHolder(partialRight));
return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);
});
/**
* Creates a function that invokes `func` with arguments arranged according
* to the specified `indexes` where the argument value at the first index is
* provided as the first argument, the argument value at the second index is
* provided as the second argument, and so on.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Function
* @param {Function} func The function to rearrange arguments for.
* @param {...(number|number[])} indexes The arranged argument indexes.
* @returns {Function} Returns the new function.
* @example
*
* var rearged = _.rearg(function(a, b, c) {
* return [a, b, c];
* }, [2, 0, 1]);
*
* rearged('b', 'c', 'a')
* // => ['a', 'b', 'c']
*/
var rearg = flatRest(function(func, indexes) {
return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);
});
/**
* Creates a function that invokes `func` with the `this` binding of the
* created function and arguments from `start` and beyond provided as
* an array.
*
* **Note:** This method is based on the
* [rest parameter](https://mdn.io/rest_parameters).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Function
* @param {Function} func The function to apply a rest parameter to.
* @param {number} [start=func.length-1] The start position of the rest parameter.
* @returns {Function} Returns the new function.
* @example
*
* var say = _.rest(function(what, names) {
* return what + ' ' + _.initial(names).join(', ') +
* (_.size(names) > 1 ? ', & ' : '') + _.last(names);
* });
*
* say('hello', 'fred', 'barney', 'pebbles');
* // => 'hello fred, barney, & pebbles'
*/
function rest(func, start) {
if (typeof func != 'function') {
throw new TypeError(FUNC_ERROR_TEXT);
}
start = start === undefined ? start : toInteger(start);
return baseRest(func, start);
}
/**
* Creates a function that invokes `func` with the `this` binding of the
* create function and an array of arguments much like
* [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).
*
* **Note:** This method is based on the
* [spread operator](https://mdn.io/spread_operator).
*
* @static
* @memberOf _
* @since 3.2.0
* @category Function
* @param {Function} func The function to spread arguments over.
* @param {number} [start=0] The start position of the spread.
* @returns {Function} Returns the new function.
* @example
*
* var say = _.spread(function(who, what) {
* return who + ' says ' + what;
* });
*
* say(['fred', 'hello']);
* // => 'fred says hello'
*
* var numbers = Promise.all([
* Promise.resolve(40),
* Promise.resolve(36)
* ]);
*
* numbers.then(_.spread(function(x, y) {
* return x + y;
* }));
* // => a Promise of 76
*/
function spread(func, start) {
if (typeof func != 'function') {
throw new TypeError(FUNC_ERROR_TEXT);
}
start = start == null ? 0 : nativeMax(toInteger(start), 0);
return baseRest(function(args) {
var array = args[start],
otherArgs = castSlice(args, 0, start);
if (array) {
arrayPush(otherArgs, array);
}
return apply(func, this, otherArgs);
});
}
/**
* Creates a throttled function that only invokes `func` at most once per
* every `wait` milliseconds. The throttled function comes with a `cancel`
* method to cancel delayed `func` invocations and a `flush` method to
* immediately invoke them. Provide `options` to indicate whether `func`
* should be invoked on the leading and/or trailing edge of the `wait`
* timeout. The `func` is invoked with the last arguments provided to the
* throttled function. Subsequent calls to the throttled function return the
* result of the last `func` invocation.
*
* **Note:** If `leading` and `trailing` options are `true`, `func` is
* invoked on the trailing edge of the timeout only if the throttled function
* is invoked more than once during the `wait` timeout.
*
* If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
* until to the next tick, similar to `setTimeout` with a timeout of `0`.
*
* See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
* for details over the differences between `_.throttle` and `_.debounce`.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Function
* @param {Function} func The function to throttle.
* @param {number} [wait=0] The number of milliseconds to throttle invocations to.
* @param {Object} [options={}] The options object.
* @param {boolean} [options.leading=true]
* Specify invoking on the leading edge of the timeout.
* @param {boolean} [options.trailing=true]
* Specify invoking on the trailing edge of the timeout.
* @returns {Function} Returns the new throttled function.
* @example
*
* // Avoid excessively updating the position while scrolling.
* jQuery(window).on('scroll', _.throttle(updatePosition, 100));
*
* // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.
* var throttled = _.throttle(renewToken, 300000, { 'trailing': false });
* jQuery(element).on('click', throttled);
*
* // Cancel the trailing throttled invocation.
* jQuery(window).on('popstate', throttled.cancel);
*/
function throttle(func, wait, options) {
var leading = true,
trailing = true;
if (typeof func != 'function') {
throw new TypeError(FUNC_ERROR_TEXT);
}
if (isObject(options)) {
leading = 'leading' in options ? !!options.leading : leading;
trailing = 'trailing' in options ? !!options.trailing : trailing;
}
return debounce(func, wait, {
'leading': leading,
'maxWait': wait,
'trailing': trailing
});
}
/**
* Creates a function that accepts up to one argument, ignoring any
* additional arguments.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Function
* @param {Function} func The function to cap arguments for.
* @returns {Function} Returns the new capped function.
* @example
*
* _.map(['6', '8', '10'], _.unary(parseInt));
* // => [6, 8, 10]
*/
function unary(func) {
return ary(func, 1);
}
/**
* Creates a function that provides `value` to `wrapper` as its first
* argument. Any additional arguments provided to the function are appended
* to those provided to the `wrapper`. The wrapper is invoked with the `this`
* binding of the created function.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Function
* @param {*} value The value to wrap.
* @param {Function} [wrapper=identity] The wrapper function.
* @returns {Function} Returns the new function.
* @example
*
* var p = _.wrap(_.escape, function(func, text) {
* return '' + func(text) + '
';
* });
*
* p('fred, barney, & pebbles');
* // => 'fred, barney, & pebbles
'
*/
function wrap(value, wrapper) {
return partial(castFunction(wrapper), value);
}
/*------------------------------------------------------------------------*/
/**
* Casts `value` as an array if it's not one.
*
* @static
* @memberOf _
* @since 4.4.0
* @category Lang
* @param {*} value The value to inspect.
* @returns {Array} Returns the cast array.
* @example
*
* _.castArray(1);
* // => [1]
*
* _.castArray({ 'a': 1 });
* // => [{ 'a': 1 }]
*
* _.castArray('abc');
* // => ['abc']
*
* _.castArray(null);
* // => [null]
*
* _.castArray(undefined);
* // => [undefined]
*
* _.castArray();
* // => []
*
* var array = [1, 2, 3];
* console.log(_.castArray(array) === array);
* // => true
*/
function castArray() {
if (!arguments.length) {
return [];
}
var value = arguments[0];
return isArray(value) ? value : [value];
}
/**
* Creates a shallow clone of `value`.
*
* **Note:** This method is loosely based on the
* [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)
* and supports cloning arrays, array buffers, booleans, date objects, maps,
* numbers, `Object` objects, regexes, sets, strings, symbols, and typed
* arrays. The own enumerable properties of `arguments` objects are cloned
* as plain objects. An empty object is returned for uncloneable values such
* as error objects, functions, DOM nodes, and WeakMaps.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Lang
* @param {*} value The value to clone.
* @returns {*} Returns the cloned value.
* @see _.cloneDeep
* @example
*
* var objects = [{ 'a': 1 }, { 'b': 2 }];
*
* var shallow = _.clone(objects);
* console.log(shallow[0] === objects[0]);
* // => true
*/
function clone(value) {
return baseClone(value, CLONE_SYMBOLS_FLAG);
}
/**
* This method is like `_.clone` except that it accepts `customizer` which
* is invoked to produce the cloned value. If `customizer` returns `undefined`,
* cloning is handled by the method instead. The `customizer` is invoked with
* up to four arguments; (value [, index|key, object, stack]).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to clone.
* @param {Function} [customizer] The function to customize cloning.
* @returns {*} Returns the cloned value.
* @see _.cloneDeepWith
* @example
*
* function customizer(value) {
* if (_.isElement(value)) {
* return value.cloneNode(false);
* }
* }
*
* var el = _.cloneWith(document.body, customizer);
*
* console.log(el === document.body);
* // => false
* console.log(el.nodeName);
* // => 'BODY'
* console.log(el.childNodes.length);
* // => 0
*/
function cloneWith(value, customizer) {
customizer = typeof customizer == 'function' ? customizer : undefined;
return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);
}
/**
* This method is like `_.clone` except that it recursively clones `value`.
*
* @static
* @memberOf _
* @since 1.0.0
* @category Lang
* @param {*} value The value to recursively clone.
* @returns {*} Returns the deep cloned value.
* @see _.clone
* @example
*
* var objects = [{ 'a': 1 }, { 'b': 2 }];
*
* var deep = _.cloneDeep(objects);
* console.log(deep[0] === objects[0]);
* // => false
*/
function cloneDeep(value) {
return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);
}
/**
* This method is like `_.cloneWith` except that it recursively clones `value`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to recursively clone.
* @param {Function} [customizer] The function to customize cloning.
* @returns {*} Returns the deep cloned value.
* @see _.cloneWith
* @example
*
* function customizer(value) {
* if (_.isElement(value)) {
* return value.cloneNode(true);
* }
* }
*
* var el = _.cloneDeepWith(document.body, customizer);
*
* console.log(el === document.body);
* // => false
* console.log(el.nodeName);
* // => 'BODY'
* console.log(el.childNodes.length);
* // => 20
*/
function cloneDeepWith(value, customizer) {
customizer = typeof customizer == 'function' ? customizer : undefined;
return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);
}
/**
* Checks if `object` conforms to `source` by invoking the predicate
* properties of `source` with the corresponding property values of `object`.
*
* **Note:** This method is equivalent to `_.conforms` when `source` is
* partially applied.
*
* @static
* @memberOf _
* @since 4.14.0
* @category Lang
* @param {Object} object The object to inspect.
* @param {Object} source The object of property predicates to conform to.
* @returns {boolean} Returns `true` if `object` conforms, else `false`.
* @example
*
* var object = { 'a': 1, 'b': 2 };
*
* _.conformsTo(object, { 'b': function(n) { return n > 1; } });
* // => true
*
* _.conformsTo(object, { 'b': function(n) { return n > 2; } });
* // => false
*/
function conformsTo(object, source) {
return source == null || baseConformsTo(object, source, keys(source));
}
/**
* Performs a
* [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
* comparison between two values to determine if they are equivalent.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to compare.
* @param {*} other The other value to compare.
* @returns {boolean} Returns `true` if the values are equivalent, else `false`.
* @example
*
* var object = { 'a': 1 };
* var other = { 'a': 1 };
*
* _.eq(object, object);
* // => true
*
* _.eq(object, other);
* // => false
*
* _.eq('a', 'a');
* // => true
*
* _.eq('a', Object('a'));
* // => false
*
* _.eq(NaN, NaN);
* // => true
*/
function eq(value, other) {
return value === other || (value !== value && other !== other);
}
/**
* Checks if `value` is greater than `other`.
*
* @static
* @memberOf _
* @since 3.9.0
* @category Lang
* @param {*} value The value to compare.
* @param {*} other The other value to compare.
* @returns {boolean} Returns `true` if `value` is greater than `other`,
* else `false`.
* @see _.lt
* @example
*
* _.gt(3, 1);
* // => true
*
* _.gt(3, 3);
* // => false
*
* _.gt(1, 3);
* // => false
*/
var gt = createRelationalOperation(baseGt);
/**
* Checks if `value` is greater than or equal to `other`.
*
* @static
* @memberOf _
* @since 3.9.0
* @category Lang
* @param {*} value The value to compare.
* @param {*} other The other value to compare.
* @returns {boolean} Returns `true` if `value` is greater than or equal to
* `other`, else `false`.
* @see _.lte
* @example
*
* _.gte(3, 1);
* // => true
*
* _.gte(3, 3);
* // => true
*
* _.gte(1, 3);
* // => false
*/
var gte = createRelationalOperation(function(value, other) {
return value >= other;
});
/**
* Checks if `value` is likely an `arguments` object.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is an `arguments` object,
* else `false`.
* @example
*
* _.isArguments(function() { return arguments; }());
* // => true
*
* _.isArguments([1, 2, 3]);
* // => false
*/
var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {
return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&
!propertyIsEnumerable.call(value, 'callee');
};
/**
* Checks if `value` is classified as an `Array` object.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is an array, else `false`.
* @example
*
* _.isArray([1, 2, 3]);
* // => true
*
* _.isArray(document.body.children);
* // => false
*
* _.isArray('abc');
* // => false
*
* _.isArray(_.noop);
* // => false
*/
var isArray = Array.isArray;
/**
* Checks if `value` is classified as an `ArrayBuffer` object.
*
* @static
* @memberOf _
* @since 4.3.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
* @example
*
* _.isArrayBuffer(new ArrayBuffer(2));
* // => true
*
* _.isArrayBuffer(new Array(2));
* // => false
*/
var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;
/**
* Checks if `value` is array-like. A value is considered array-like if it's
* not a function and has a `value.length` that's an integer greater than or
* equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is array-like, else `false`.
* @example
*
* _.isArrayLike([1, 2, 3]);
* // => true
*
* _.isArrayLike(document.body.children);
* // => true
*
* _.isArrayLike('abc');
* // => true
*
* _.isArrayLike(_.noop);
* // => false
*/
function isArrayLike(value) {
return value != null && isLength(value.length) && !isFunction(value);
}
/**
* This method is like `_.isArrayLike` except that it also checks if `value`
* is an object.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is an array-like object,
* else `false`.
* @example
*
* _.isArrayLikeObject([1, 2, 3]);
* // => true
*
* _.isArrayLikeObject(document.body.children);
* // => true
*
* _.isArrayLikeObject('abc');
* // => false
*
* _.isArrayLikeObject(_.noop);
* // => false
*/
function isArrayLikeObject(value) {
return isObjectLike(value) && isArrayLike(value);
}
/**
* Checks if `value` is classified as a boolean primitive or object.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a boolean, else `false`.
* @example
*
* _.isBoolean(false);
* // => true
*
* _.isBoolean(null);
* // => false
*/
function isBoolean(value) {
return value === true || value === false ||
(isObjectLike(value) && baseGetTag(value) == boolTag);
}
/**
* Checks if `value` is a buffer.
*
* @static
* @memberOf _
* @since 4.3.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
* @example
*
* _.isBuffer(new Buffer(2));
* // => true
*
* _.isBuffer(new Uint8Array(2));
* // => false
*/
var isBuffer = nativeIsBuffer || stubFalse;
/**
* Checks if `value` is classified as a `Date` object.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a date object, else `false`.
* @example
*
* _.isDate(new Date);
* // => true
*
* _.isDate('Mon April 23 2012');
* // => false
*/
var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;
/**
* Checks if `value` is likely a DOM element.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.
* @example
*
* _.isElement(document.body);
* // => true
*
* _.isElement('');
* // => false
*/
function isElement(value) {
return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);
}
/**
* Checks if `value` is an empty object, collection, map, or set.
*
* Objects are considered empty if they have no own enumerable string keyed
* properties.
*
* Array-like values such as `arguments` objects, arrays, buffers, strings, or
* jQuery-like collections are considered empty if they have a `length` of `0`.
* Similarly, maps and sets are considered empty if they have a `size` of `0`.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is empty, else `false`.
* @example
*
* _.isEmpty(null);
* // => true
*
* _.isEmpty(true);
* // => true
*
* _.isEmpty(1);
* // => true
*
* _.isEmpty([1, 2, 3]);
* // => false
*
* _.isEmpty({ 'a': 1 });
* // => false
*/
function isEmpty(value) {
if (value == null) {
return true;
}
if (isArrayLike(value) &&
(isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||
isBuffer(value) || isTypedArray(value) || isArguments(value))) {
return !value.length;
}
var tag = getTag(value);
if (tag == mapTag || tag == setTag) {
return !value.size;
}
if (isPrototype(value)) {
return !baseKeys(value).length;
}
for (var key in value) {
if (hasOwnProperty.call(value, key)) {
return false;
}
}
return true;
}
/**
* Performs a deep comparison between two values to determine if they are
* equivalent.
*
* **Note:** This method supports comparing arrays, array buffers, booleans,
* date objects, error objects, maps, numbers, `Object` objects, regexes,
* sets, strings, symbols, and typed arrays. `Object` objects are compared
* by their own, not inherited, enumerable properties. Functions and DOM
* nodes are compared by strict equality, i.e. `===`.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Lang
* @param {*} value The value to compare.
* @param {*} other The other value to compare.
* @returns {boolean} Returns `true` if the values are equivalent, else `false`.
* @example
*
* var object = { 'a': 1 };
* var other = { 'a': 1 };
*
* _.isEqual(object, other);
* // => true
*
* object === other;
* // => false
*/
function isEqual(value, other) {
return baseIsEqual(value, other);
}
/**
* This method is like `_.isEqual` except that it accepts `customizer` which
* is invoked to compare values. If `customizer` returns `undefined`, comparisons
* are handled by the method instead. The `customizer` is invoked with up to
* six arguments: (objValue, othValue [, index|key, object, other, stack]).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to compare.
* @param {*} other The other value to compare.
* @param {Function} [customizer] The function to customize comparisons.
* @returns {boolean} Returns `true` if the values are equivalent, else `false`.
* @example
*
* function isGreeting(value) {
* return /^h(?:i|ello)$/.test(value);
* }
*
* function customizer(objValue, othValue) {
* if (isGreeting(objValue) && isGreeting(othValue)) {
* return true;
* }
* }
*
* var array = ['hello', 'goodbye'];
* var other = ['hi', 'goodbye'];
*
* _.isEqualWith(array, other, customizer);
* // => true
*/
function isEqualWith(value, other, customizer) {
customizer = typeof customizer == 'function' ? customizer : undefined;
var result = customizer ? customizer(value, other) : undefined;
return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;
}
/**
* Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,
* `SyntaxError`, `TypeError`, or `URIError` object.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is an error object, else `false`.
* @example
*
* _.isError(new Error);
* // => true
*
* _.isError(Error);
* // => false
*/
function isError(value) {
if (!isObjectLike(value)) {
return false;
}
var tag = baseGetTag(value);
return tag == errorTag || tag == domExcTag ||
(typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));
}
/**
* Checks if `value` is a finite primitive number.
*
* **Note:** This method is based on
* [`Number.isFinite`](https://mdn.io/Number/isFinite).
*
* @static
* @memberOf _
* @since 0.1.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a finite number, else `false`.
* @example
*
* _.isFinite(3);
* // => true
*
* _.isFinite(Number.MIN_VALUE);
* // => true
*
* _.isFinite(Infinity);
* // => false
*
* _.isFinite('3');
* // => false
*/
function isFinite(value) {
return typeof value == 'number' && nativeIsFinite(value);
}
/**
* Checks if `value` is classified as a `Function` object.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a function, else `false`.
* @example
*
* _.isFunction(_);
* // => true
*
* _.isFunction(/abc/);
* // => false
*/
function isFunction(value) {
if (!isObject(value)) {
return false;
}
// The use of `Object#toString` avoids issues with the `typeof` operator
// in Safari 9 which returns 'object' for typed arrays and other constructors.
var tag = baseGetTag(value);
return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;
}
/**
* Checks if `value` is an integer.
*
* **Note:** This method is based on
* [`Number.isInteger`](https://mdn.io/Number/isInteger).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is an integer, else `false`.
* @example
*
* _.isInteger(3);
* // => true
*
* _.isInteger(Number.MIN_VALUE);
* // => false
*
* _.isInteger(Infinity);
* // => false
*
* _.isInteger('3');
* // => false
*/
function isInteger(value) {
return typeof value == 'number' && value == toInteger(value);
}
/**
* Checks if `value` is a valid array-like length.
*
* **Note:** This method is loosely based on
* [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
* @example
*
* _.isLength(3);
* // => true
*
* _.isLength(Number.MIN_VALUE);
* // => false
*
* _.isLength(Infinity);
* // => false
*
* _.isLength('3');
* // => false
*/
function isLength(value) {
return typeof value == 'number' &&
value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
}
/**
* Checks if `value` is the
* [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
* of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
*
* @static
* @memberOf _
* @since 0.1.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is an object, else `false`.
* @example
*
* _.isObject({});
* // => true
*
* _.isObject([1, 2, 3]);
* // => true
*
* _.isObject(_.noop);
* // => true
*
* _.isObject(null);
* // => false
*/
function isObject(value) {
var type = typeof value;
return value != null && (type == 'object' || type == 'function');
}
/**
* Checks if `value` is object-like. A value is object-like if it's not `null`
* and has a `typeof` result of "object".
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is object-like, else `false`.
* @example
*
* _.isObjectLike({});
* // => true
*
* _.isObjectLike([1, 2, 3]);
* // => true
*
* _.isObjectLike(_.noop);
* // => false
*
* _.isObjectLike(null);
* // => false
*/
function isObjectLike(value) {
return value != null && typeof value == 'object';
}
/**
* Checks if `value` is classified as a `Map` object.
*
* @static
* @memberOf _
* @since 4.3.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a map, else `false`.
* @example
*
* _.isMap(new Map);
* // => true
*
* _.isMap(new WeakMap);
* // => false
*/
var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;
/**
* Performs a partial deep comparison between `object` and `source` to
* determine if `object` contains equivalent property values.
*
* **Note:** This method is equivalent to `_.matches` when `source` is
* partially applied.
*
* Partial comparisons will match empty array and empty object `source`
* values against any array or object value, respectively. See `_.isEqual`
* for a list of supported value comparisons.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Lang
* @param {Object} object The object to inspect.
* @param {Object} source The object of property values to match.
* @returns {boolean} Returns `true` if `object` is a match, else `false`.
* @example
*
* var object = { 'a': 1, 'b': 2 };
*
* _.isMatch(object, { 'b': 2 });
* // => true
*
* _.isMatch(object, { 'b': 1 });
* // => false
*/
function isMatch(object, source) {
return object === source || baseIsMatch(object, source, getMatchData(source));
}
/**
* This method is like `_.isMatch` except that it accepts `customizer` which
* is invoked to compare values. If `customizer` returns `undefined`, comparisons
* are handled by the method instead. The `customizer` is invoked with five
* arguments: (objValue, srcValue, index|key, object, source).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {Object} object The object to inspect.
* @param {Object} source The object of property values to match.
* @param {Function} [customizer] The function to customize comparisons.
* @returns {boolean} Returns `true` if `object` is a match, else `false`.
* @example
*
* function isGreeting(value) {
* return /^h(?:i|ello)$/.test(value);
* }
*
* function customizer(objValue, srcValue) {
* if (isGreeting(objValue) && isGreeting(srcValue)) {
* return true;
* }
* }
*
* var object = { 'greeting': 'hello' };
* var source = { 'greeting': 'hi' };
*
* _.isMatchWith(object, source, customizer);
* // => true
*/
function isMatchWith(object, source, customizer) {
customizer = typeof customizer == 'function' ? customizer : undefined;
return baseIsMatch(object, source, getMatchData(source), customizer);
}
/**
* Checks if `value` is `NaN`.
*
* **Note:** This method is based on
* [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as
* global [`isNaN`](https://mdn.io/isNaN) which returns `true` for
* `undefined` and other non-number values.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
* @example
*
* _.isNaN(NaN);
* // => true
*
* _.isNaN(new Number(NaN));
* // => true
*
* isNaN(undefined);
* // => true
*
* _.isNaN(undefined);
* // => false
*/
function isNaN(value) {
// An `NaN` primitive is the only value that is not equal to itself.
// Perform the `toStringTag` check first to avoid errors with some
// ActiveX objects in IE.
return isNumber(value) && value != +value;
}
/**
* Checks if `value` is a pristine native function.
*
* **Note:** This method can't reliably detect native functions in the presence
* of the core-js package because core-js circumvents this kind of detection.
* Despite multiple requests, the core-js maintainer has made it clear: any
* attempt to fix the detection will be obstructed. As a result, we're left
* with little choice but to throw an error. Unfortunately, this also affects
* packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),
* which rely on core-js.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a native function,
* else `false`.
* @example
*
* _.isNative(Array.prototype.push);
* // => true
*
* _.isNative(_);
* // => false
*/
function isNative(value) {
if (isMaskable(value)) {
throw new Error(CORE_ERROR_TEXT);
}
return baseIsNative(value);
}
/**
* Checks if `value` is `null`.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is `null`, else `false`.
* @example
*
* _.isNull(null);
* // => true
*
* _.isNull(void 0);
* // => false
*/
function isNull(value) {
return value === null;
}
/**
* Checks if `value` is `null` or `undefined`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is nullish, else `false`.
* @example
*
* _.isNil(null);
* // => true
*
* _.isNil(void 0);
* // => true
*
* _.isNil(NaN);
* // => false
*/
function isNil(value) {
return value == null;
}
/**
* Checks if `value` is classified as a `Number` primitive or object.
*
* **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are
* classified as numbers, use the `_.isFinite` method.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a number, else `false`.
* @example
*
* _.isNumber(3);
* // => true
*
* _.isNumber(Number.MIN_VALUE);
* // => true
*
* _.isNumber(Infinity);
* // => true
*
* _.isNumber('3');
* // => false
*/
function isNumber(value) {
return typeof value == 'number' ||
(isObjectLike(value) && baseGetTag(value) == numberTag);
}
/**
* Checks if `value` is a plain object, that is, an object created by the
* `Object` constructor or one with a `[[Prototype]]` of `null`.
*
* @static
* @memberOf _
* @since 0.8.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
* @example
*
* function Foo() {
* this.a = 1;
* }
*
* _.isPlainObject(new Foo);
* // => false
*
* _.isPlainObject([1, 2, 3]);
* // => false
*
* _.isPlainObject({ 'x': 0, 'y': 0 });
* // => true
*
* _.isPlainObject(Object.create(null));
* // => true
*/
function isPlainObject(value) {
if (!isObjectLike(value) || baseGetTag(value) != objectTag) {
return false;
}
var proto = getPrototype(value);
if (proto === null) {
return true;
}
var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;
return typeof Ctor == 'function' && Ctor instanceof Ctor &&
funcToString.call(Ctor) == objectCtorString;
}
/**
* Checks if `value` is classified as a `RegExp` object.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
* @example
*
* _.isRegExp(/abc/);
* // => true
*
* _.isRegExp('/abc/');
* // => false
*/
var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;
/**
* Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754
* double precision number which isn't the result of a rounded unsafe integer.
*
* **Note:** This method is based on
* [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.
* @example
*
* _.isSafeInteger(3);
* // => true
*
* _.isSafeInteger(Number.MIN_VALUE);
* // => false
*
* _.isSafeInteger(Infinity);
* // => false
*
* _.isSafeInteger('3');
* // => false
*/
function isSafeInteger(value) {
return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;
}
/**
* Checks if `value` is classified as a `Set` object.
*
* @static
* @memberOf _
* @since 4.3.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a set, else `false`.
* @example
*
* _.isSet(new Set);
* // => true
*
* _.isSet(new WeakSet);
* // => false
*/
var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;
/**
* Checks if `value` is classified as a `String` primitive or object.
*
* @static
* @since 0.1.0
* @memberOf _
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a string, else `false`.
* @example
*
* _.isString('abc');
* // => true
*
* _.isString(1);
* // => false
*/
function isString(value) {
return typeof value == 'string' ||
(!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);
}
/**
* Checks if `value` is classified as a `Symbol` primitive or object.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
* @example
*
* _.isSymbol(Symbol.iterator);
* // => true
*
* _.isSymbol('abc');
* // => false
*/
function isSymbol(value) {
return typeof value == 'symbol' ||
(isObjectLike(value) && baseGetTag(value) == symbolTag);
}
/**
* Checks if `value` is classified as a typed array.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
* @example
*
* _.isTypedArray(new Uint8Array);
* // => true
*
* _.isTypedArray([]);
* // => false
*/
var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;
/**
* Checks if `value` is `undefined`.
*
* @static
* @since 0.1.0
* @memberOf _
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
* @example
*
* _.isUndefined(void 0);
* // => true
*
* _.isUndefined(null);
* // => false
*/
function isUndefined(value) {
return value === undefined;
}
/**
* Checks if `value` is classified as a `WeakMap` object.
*
* @static
* @memberOf _
* @since 4.3.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a weak map, else `false`.
* @example
*
* _.isWeakMap(new WeakMap);
* // => true
*
* _.isWeakMap(new Map);
* // => false
*/
function isWeakMap(value) {
return isObjectLike(value) && getTag(value) == weakMapTag;
}
/**
* Checks if `value` is classified as a `WeakSet` object.
*
* @static
* @memberOf _
* @since 4.3.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a weak set, else `false`.
* @example
*
* _.isWeakSet(new WeakSet);
* // => true
*
* _.isWeakSet(new Set);
* // => false
*/
function isWeakSet(value) {
return isObjectLike(value) && baseGetTag(value) == weakSetTag;
}
/**
* Checks if `value` is less than `other`.
*
* @static
* @memberOf _
* @since 3.9.0
* @category Lang
* @param {*} value The value to compare.
* @param {*} other The other value to compare.
* @returns {boolean} Returns `true` if `value` is less than `other`,
* else `false`.
* @see _.gt
* @example
*
* _.lt(1, 3);
* // => true
*
* _.lt(3, 3);
* // => false
*
* _.lt(3, 1);
* // => false
*/
var lt = createRelationalOperation(baseLt);
/**
* Checks if `value` is less than or equal to `other`.
*
* @static
* @memberOf _
* @since 3.9.0
* @category Lang
* @param {*} value The value to compare.
* @param {*} other The other value to compare.
* @returns {boolean} Returns `true` if `value` is less than or equal to
* `other`, else `false`.
* @see _.gte
* @example
*
* _.lte(1, 3);
* // => true
*
* _.lte(3, 3);
* // => true
*
* _.lte(3, 1);
* // => false
*/
var lte = createRelationalOperation(function(value, other) {
return value <= other;
});
/**
* Converts `value` to an array.
*
* @static
* @since 0.1.0
* @memberOf _
* @category Lang
* @param {*} value The value to convert.
* @returns {Array} Returns the converted array.
* @example
*
* _.toArray({ 'a': 1, 'b': 2 });
* // => [1, 2]
*
* _.toArray('abc');
* // => ['a', 'b', 'c']
*
* _.toArray(1);
* // => []
*
* _.toArray(null);
* // => []
*/
function toArray(value) {
if (!value) {
return [];
}
if (isArrayLike(value)) {
return isString(value) ? stringToArray(value) : copyArray(value);
}
if (symIterator && value[symIterator]) {
return iteratorToArray(value[symIterator]());
}
var tag = getTag(value),
func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);
return func(value);
}
/**
* Converts `value` to a finite number.
*
* @static
* @memberOf _
* @since 4.12.0
* @category Lang
* @param {*} value The value to convert.
* @returns {number} Returns the converted number.
* @example
*
* _.toFinite(3.2);
* // => 3.2
*
* _.toFinite(Number.MIN_VALUE);
* // => 5e-324
*
* _.toFinite(Infinity);
* // => 1.7976931348623157e+308
*
* _.toFinite('3.2');
* // => 3.2
*/
function toFinite(value) {
if (!value) {
return value === 0 ? value : 0;
}
value = toNumber(value);
if (value === INFINITY || value === -INFINITY) {
var sign = (value < 0 ? -1 : 1);
return sign * MAX_INTEGER;
}
return value === value ? value : 0;
}
/**
* Converts `value` to an integer.
*
* **Note:** This method is loosely based on
* [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to convert.
* @returns {number} Returns the converted integer.
* @example
*
* _.toInteger(3.2);
* // => 3
*
* _.toInteger(Number.MIN_VALUE);
* // => 0
*
* _.toInteger(Infinity);
* // => 1.7976931348623157e+308
*
* _.toInteger('3.2');
* // => 3
*/
function toInteger(value) {
var result = toFinite(value),
remainder = result % 1;
return result === result ? (remainder ? result - remainder : result) : 0;
}
/**
* Converts `value` to an integer suitable for use as the length of an
* array-like object.
*
* **Note:** This method is based on
* [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to convert.
* @returns {number} Returns the converted integer.
* @example
*
* _.toLength(3.2);
* // => 3
*
* _.toLength(Number.MIN_VALUE);
* // => 0
*
* _.toLength(Infinity);
* // => 4294967295
*
* _.toLength('3.2');
* // => 3
*/
function toLength(value) {
return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;
}
/**
* Converts `value` to a number.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to process.
* @returns {number} Returns the number.
* @example
*
* _.toNumber(3.2);
* // => 3.2
*
* _.toNumber(Number.MIN_VALUE);
* // => 5e-324
*
* _.toNumber(Infinity);
* // => Infinity
*
* _.toNumber('3.2');
* // => 3.2
*/
function toNumber(value) {
if (typeof value == 'number') {
return value;
}
if (isSymbol(value)) {
return NAN;
}
if (isObject(value)) {
var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
value = isObject(other) ? (other + '') : other;
}
if (typeof value != 'string') {
return value === 0 ? value : +value;
}
value = value.replace(reTrim, '');
var isBinary = reIsBinary.test(value);
return (isBinary || reIsOctal.test(value))
? freeParseInt(value.slice(2), isBinary ? 2 : 8)
: (reIsBadHex.test(value) ? NAN : +value);
}
/**
* Converts `value` to a plain object flattening inherited enumerable string
* keyed properties of `value` to own properties of the plain object.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Lang
* @param {*} value The value to convert.
* @returns {Object} Returns the converted plain object.
* @example
*
* function Foo() {
* this.b = 2;
* }
*
* Foo.prototype.c = 3;
*
* _.assign({ 'a': 1 }, new Foo);
* // => { 'a': 1, 'b': 2 }
*
* _.assign({ 'a': 1 }, _.toPlainObject(new Foo));
* // => { 'a': 1, 'b': 2, 'c': 3 }
*/
function toPlainObject(value) {
return copyObject(value, keysIn(value));
}
/**
* Converts `value` to a safe integer. A safe integer can be compared and
* represented correctly.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to convert.
* @returns {number} Returns the converted integer.
* @example
*
* _.toSafeInteger(3.2);
* // => 3
*
* _.toSafeInteger(Number.MIN_VALUE);
* // => 0
*
* _.toSafeInteger(Infinity);
* // => 9007199254740991
*
* _.toSafeInteger('3.2');
* // => 3
*/
function toSafeInteger(value) {
return value
? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)
: (value === 0 ? value : 0);
}
/**
* Converts `value` to a string. An empty string is returned for `null`
* and `undefined` values. The sign of `-0` is preserved.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to convert.
* @returns {string} Returns the converted string.
* @example
*
* _.toString(null);
* // => ''
*
* _.toString(-0);
* // => '-0'
*
* _.toString([1, 2, 3]);
* // => '1,2,3'
*/
function toString(value) {
return value == null ? '' : baseToString(value);
}
/*------------------------------------------------------------------------*/
/**
* Assigns own enumerable string keyed properties of source objects to the
* destination object. Source objects are applied from left to right.
* Subsequent sources overwrite property assignments of previous sources.
*
* **Note:** This method mutates `object` and is loosely based on
* [`Object.assign`](https://mdn.io/Object/assign).
*
* @static
* @memberOf _
* @since 0.10.0
* @category Object
* @param {Object} object The destination object.
* @param {...Object} [sources] The source objects.
* @returns {Object} Returns `object`.
* @see _.assignIn
* @example
*
* function Foo() {
* this.a = 1;
* }
*
* function Bar() {
* this.c = 3;
* }
*
* Foo.prototype.b = 2;
* Bar.prototype.d = 4;
*
* _.assign({ 'a': 0 }, new Foo, new Bar);
* // => { 'a': 1, 'c': 3 }
*/
var assign = createAssigner(function(object, source) {
if (isPrototype(source) || isArrayLike(source)) {
copyObject(source, keys(source), object);
return;
}
for (var key in source) {
if (hasOwnProperty.call(source, key)) {
assignValue(object, key, source[key]);
}
}
});
/**
* This method is like `_.assign` except that it iterates over own and
* inherited source properties.
*
* **Note:** This method mutates `object`.
*
* @static
* @memberOf _
* @since 4.0.0
* @alias extend
* @category Object
* @param {Object} object The destination object.
* @param {...Object} [sources] The source objects.
* @returns {Object} Returns `object`.
* @see _.assign
* @example
*
* function Foo() {
* this.a = 1;
* }
*
* function Bar() {
* this.c = 3;
* }
*
* Foo.prototype.b = 2;
* Bar.prototype.d = 4;
*
* _.assignIn({ 'a': 0 }, new Foo, new Bar);
* // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }
*/
var assignIn = createAssigner(function(object, source) {
copyObject(source, keysIn(source), object);
});
/**
* This method is like `_.assignIn` except that it accepts `customizer`
* which is invoked to produce the assigned values. If `customizer` returns
* `undefined`, assignment is handled by the method instead. The `customizer`
* is invoked with five arguments: (objValue, srcValue, key, object, source).
*
* **Note:** This method mutates `object`.
*
* @static
* @memberOf _
* @since 4.0.0
* @alias extendWith
* @category Object
* @param {Object} object The destination object.
* @param {...Object} sources The source objects.
* @param {Function} [customizer] The function to customize assigned values.
* @returns {Object} Returns `object`.
* @see _.assignWith
* @example
*
* function customizer(objValue, srcValue) {
* return _.isUndefined(objValue) ? srcValue : objValue;
* }
*
* var defaults = _.partialRight(_.assignInWith, customizer);
*
* defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
* // => { 'a': 1, 'b': 2 }
*/
var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {
copyObject(source, keysIn(source), object, customizer);
});
/**
* This method is like `_.assign` except that it accepts `customizer`
* which is invoked to produce the assigned values. If `customizer` returns
* `undefined`, assignment is handled by the method instead. The `customizer`
* is invoked with five arguments: (objValue, srcValue, key, object, source).
*
* **Note:** This method mutates `object`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Object
* @param {Object} object The destination object.
* @param {...Object} sources The source objects.
* @param {Function} [customizer] The function to customize assigned values.
* @returns {Object} Returns `object`.
* @see _.assignInWith
* @example
*
* function customizer(objValue, srcValue) {
* return _.isUndefined(objValue) ? srcValue : objValue;
* }
*
* var defaults = _.partialRight(_.assignWith, customizer);
*
* defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
* // => { 'a': 1, 'b': 2 }
*/
var assignWith = createAssigner(function(object, source, srcIndex, customizer) {
copyObject(source, keys(source), object, customizer);
});
/**
* Creates an array of values corresponding to `paths` of `object`.
*
* @static
* @memberOf _
* @since 1.0.0
* @category Object
* @param {Object} object The object to iterate over.
* @param {...(string|string[])} [paths] The property paths to pick.
* @returns {Array} Returns the picked values.
* @example
*
* var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
*
* _.at(object, ['a[0].b.c', 'a[1]']);
* // => [3, 4]
*/
var at = flatRest(baseAt);
/**
* Creates an object that inherits from the `prototype` object. If a
* `properties` object is given, its own enumerable string keyed properties
* are assigned to the created object.
*
* @static
* @memberOf _
* @since 2.3.0
* @category Object
* @param {Object} prototype The object to inherit from.
* @param {Object} [properties] The properties to assign to the object.
* @returns {Object} Returns the new object.
* @example
*
* function Shape() {
* this.x = 0;
* this.y = 0;
* }
*
* function Circle() {
* Shape.call(this);
* }
*
* Circle.prototype = _.create(Shape.prototype, {
* 'constructor': Circle
* });
*
* var circle = new Circle;
* circle instanceof Circle;
* // => true
*
* circle instanceof Shape;
* // => true
*/
function create(prototype, properties) {
var result = baseCreate(prototype);
return properties == null ? result : baseAssign(result, properties);
}
/**
* Assigns own and inherited enumerable string keyed properties of source
* objects to the destination object for all destination properties that
* resolve to `undefined`. Source objects are applied from left to right.
* Once a property is set, additional values of the same property are ignored.
*
* **Note:** This method mutates `object`.
*
* @static
* @since 0.1.0
* @memberOf _
* @category Object
* @param {Object} object The destination object.
* @param {...Object} [sources] The source objects.
* @returns {Object} Returns `object`.
* @see _.defaultsDeep
* @example
*
* _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
* // => { 'a': 1, 'b': 2 }
*/
var defaults = baseRest(function(object, sources) {
object = Object(object);
var index = -1;
var length = sources.length;
var guard = length > 2 ? sources[2] : undefined;
if (guard && isIterateeCall(sources[0], sources[1], guard)) {
length = 1;
}
while (++index < length) {
var source = sources[index];
var props = keysIn(source);
var propsIndex = -1;
var propsLength = props.length;
while (++propsIndex < propsLength) {
var key = props[propsIndex];
var value = object[key];
if (value === undefined ||
(eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {
object[key] = source[key];
}
}
}
return object;
});
/**
* This method is like `_.defaults` except that it recursively assigns
* default properties.
*
* **Note:** This method mutates `object`.
*
* @static
* @memberOf _
* @since 3.10.0
* @category Object
* @param {Object} object The destination object.
* @param {...Object} [sources] The source objects.
* @returns {Object} Returns `object`.
* @see _.defaults
* @example
*
* _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });
* // => { 'a': { 'b': 2, 'c': 3 } }
*/
var defaultsDeep = baseRest(function(args) {
args.push(undefined, customDefaultsMerge);
return apply(mergeWith, undefined, args);
});
/**
* This method is like `_.find` except that it returns the key of the first
* element `predicate` returns truthy for instead of the element itself.
*
* @static
* @memberOf _
* @since 1.1.0
* @category Object
* @param {Object} object The object to inspect.
* @param {Function} [predicate=_.identity] The function invoked per iteration.
* @returns {string|undefined} Returns the key of the matched element,
* else `undefined`.
* @example
*
* var users = {
* 'barney': { 'age': 36, 'active': true },
* 'fred': { 'age': 40, 'active': false },
* 'pebbles': { 'age': 1, 'active': true }
* };
*
* _.findKey(users, function(o) { return o.age < 40; });
* // => 'barney' (iteration order is not guaranteed)
*
* // The `_.matches` iteratee shorthand.
* _.findKey(users, { 'age': 1, 'active': true });
* // => 'pebbles'
*
* // The `_.matchesProperty` iteratee shorthand.
* _.findKey(users, ['active', false]);
* // => 'fred'
*
* // The `_.property` iteratee shorthand.
* _.findKey(users, 'active');
* // => 'barney'
*/
function findKey(object, predicate) {
return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);
}
/**
* This method is like `_.findKey` except that it iterates over elements of
* a collection in the opposite order.
*
* @static
* @memberOf _
* @since 2.0.0
* @category Object
* @param {Object} object The object to inspect.
* @param {Function} [predicate=_.identity] The function invoked per iteration.
* @returns {string|undefined} Returns the key of the matched element,
* else `undefined`.
* @example
*
* var users = {
* 'barney': { 'age': 36, 'active': true },
* 'fred': { 'age': 40, 'active': false },
* 'pebbles': { 'age': 1, 'active': true }
* };
*
* _.findLastKey(users, function(o) { return o.age < 40; });
* // => returns 'pebbles' assuming `_.findKey` returns 'barney'
*
* // The `_.matches` iteratee shorthand.
* _.findLastKey(users, { 'age': 36, 'active': true });
* // => 'barney'
*
* // The `_.matchesProperty` iteratee shorthand.
* _.findLastKey(users, ['active', false]);
* // => 'fred'
*
* // The `_.property` iteratee shorthand.
* _.findLastKey(users, 'active');
* // => 'pebbles'
*/
function findLastKey(object, predicate) {
return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);
}
/**
* Iterates over own and inherited enumerable string keyed properties of an
* object and invokes `iteratee` for each property. The iteratee is invoked
* with three arguments: (value, key, object). Iteratee functions may exit
* iteration early by explicitly returning `false`.
*
* @static
* @memberOf _
* @since 0.3.0
* @category Object
* @param {Object} object The object to iterate over.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @returns {Object} Returns `object`.
* @see _.forInRight
* @example
*
* function Foo() {
* this.a = 1;
* this.b = 2;
* }
*
* Foo.prototype.c = 3;
*
* _.forIn(new Foo, function(value, key) {
* console.log(key);
* });
* // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).
*/
function forIn(object, iteratee) {
return object == null
? object
: baseFor(object, getIteratee(iteratee, 3), keysIn);
}
/**
* This method is like `_.forIn` except that it iterates over properties of
* `object` in the opposite order.
*
* @static
* @memberOf _
* @since 2.0.0
* @category Object
* @param {Object} object The object to iterate over.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @returns {Object} Returns `object`.
* @see _.forIn
* @example
*
* function Foo() {
* this.a = 1;
* this.b = 2;
* }
*
* Foo.prototype.c = 3;
*
* _.forInRight(new Foo, function(value, key) {
* console.log(key);
* });
* // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.
*/
function forInRight(object, iteratee) {
return object == null
? object
: baseForRight(object, getIteratee(iteratee, 3), keysIn);
}
/**
* Iterates over own enumerable string keyed properties of an object and
* invokes `iteratee` for each property. The iteratee is invoked with three
* arguments: (value, key, object). Iteratee functions may exit iteration
* early by explicitly returning `false`.
*
* @static
* @memberOf _
* @since 0.3.0
* @category Object
* @param {Object} object The object to iterate over.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @returns {Object} Returns `object`.
* @see _.forOwnRight
* @example
*
* function Foo() {
* this.a = 1;
* this.b = 2;
* }
*
* Foo.prototype.c = 3;
*
* _.forOwn(new Foo, function(value, key) {
* console.log(key);
* });
* // => Logs 'a' then 'b' (iteration order is not guaranteed).
*/
function forOwn(object, iteratee) {
return object && baseForOwn(object, getIteratee(iteratee, 3));
}
/**
* This method is like `_.forOwn` except that it iterates over properties of
* `object` in the opposite order.
*
* @static
* @memberOf _
* @since 2.0.0
* @category Object
* @param {Object} object The object to iterate over.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @returns {Object} Returns `object`.
* @see _.forOwn
* @example
*
* function Foo() {
* this.a = 1;
* this.b = 2;
* }
*
* Foo.prototype.c = 3;
*
* _.forOwnRight(new Foo, function(value, key) {
* console.log(key);
* });
* // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.
*/
function forOwnRight(object, iteratee) {
return object && baseForOwnRight(object, getIteratee(iteratee, 3));
}
/**
* Creates an array of function property names from own enumerable properties
* of `object`.
*
* @static
* @since 0.1.0
* @memberOf _
* @category Object
* @param {Object} object The object to inspect.
* @returns {Array} Returns the function names.
* @see _.functionsIn
* @example
*
* function Foo() {
* this.a = _.constant('a');
* this.b = _.constant('b');
* }
*
* Foo.prototype.c = _.constant('c');
*
* _.functions(new Foo);
* // => ['a', 'b']
*/
function functions(object) {
return object == null ? [] : baseFunctions(object, keys(object));
}
/**
* Creates an array of function property names from own and inherited
* enumerable properties of `object`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Object
* @param {Object} object The object to inspect.
* @returns {Array} Returns the function names.
* @see _.functions
* @example
*
* function Foo() {
* this.a = _.constant('a');
* this.b = _.constant('b');
* }
*
* Foo.prototype.c = _.constant('c');
*
* _.functionsIn(new Foo);
* // => ['a', 'b', 'c']
*/
function functionsIn(object) {
return object == null ? [] : baseFunctions(object, keysIn(object));
}
/**
* Gets the value at `path` of `object`. If the resolved value is
* `undefined`, the `defaultValue` is returned in its place.
*
* @static
* @memberOf _
* @since 3.7.0
* @category Object
* @param {Object} object The object to query.
* @param {Array|string} path The path of the property to get.
* @param {*} [defaultValue] The value returned for `undefined` resolved values.
* @returns {*} Returns the resolved value.
* @example
*
* var object = { 'a': [{ 'b': { 'c': 3 } }] };
*
* _.get(object, 'a[0].b.c');
* // => 3
*
* _.get(object, ['a', '0', 'b', 'c']);
* // => 3
*
* _.get(object, 'a.b.c', 'default');
* // => 'default'
*/
function get(object, path, defaultValue) {
var result = object == null ? undefined : baseGet(object, path);
return result === undefined ? defaultValue : result;
}
/**
* Checks if `path` is a direct property of `object`.
*
* @static
* @since 0.1.0
* @memberOf _
* @category Object
* @param {Object} object The object to query.
* @param {Array|string} path The path to check.
* @returns {boolean} Returns `true` if `path` exists, else `false`.
* @example
*
* var object = { 'a': { 'b': 2 } };
* var other = _.create({ 'a': _.create({ 'b': 2 }) });
*
* _.has(object, 'a');
* // => true
*
* _.has(object, 'a.b');
* // => true
*
* _.has(object, ['a', 'b']);
* // => true
*
* _.has(other, 'a');
* // => false
*/
function has(object, path) {
return object != null && hasPath(object, path, baseHas);
}
/**
* Checks if `path` is a direct or inherited property of `object`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Object
* @param {Object} object The object to query.
* @param {Array|string} path The path to check.
* @returns {boolean} Returns `true` if `path` exists, else `false`.
* @example
*
* var object = _.create({ 'a': _.create({ 'b': 2 }) });
*
* _.hasIn(object, 'a');
* // => true
*
* _.hasIn(object, 'a.b');
* // => true
*
* _.hasIn(object, ['a', 'b']);
* // => true
*
* _.hasIn(object, 'b');
* // => false
*/
function hasIn(object, path) {
return object != null && hasPath(object, path, baseHasIn);
}
/**
* Creates an object composed of the inverted keys and values of `object`.
* If `object` contains duplicate values, subsequent values overwrite
* property assignments of previous values.
*
* @static
* @memberOf _
* @since 0.7.0
* @category Object
* @param {Object} object The object to invert.
* @returns {Object} Returns the new inverted object.
* @example
*
* var object = { 'a': 1, 'b': 2, 'c': 1 };
*
* _.invert(object);
* // => { '1': 'c', '2': 'b' }
*/
var invert = createInverter(function(result, value, key) {
if (value != null &&
typeof value.toString != 'function') {
value = nativeObjectToString.call(value);
}
result[value] = key;
}, constant(identity));
/**
* This method is like `_.invert` except that the inverted object is generated
* from the results of running each element of `object` thru `iteratee`. The
* corresponding inverted value of each inverted key is an array of keys
* responsible for generating the inverted value. The iteratee is invoked
* with one argument: (value).
*
* @static
* @memberOf _
* @since 4.1.0
* @category Object
* @param {Object} object The object to invert.
* @param {Function} [iteratee=_.identity] The iteratee invoked per element.
* @returns {Object} Returns the new inverted object.
* @example
*
* var object = { 'a': 1, 'b': 2, 'c': 1 };
*
* _.invertBy(object);
* // => { '1': ['a', 'c'], '2': ['b'] }
*
* _.invertBy(object, function(value) {
* return 'group' + value;
* });
* // => { 'group1': ['a', 'c'], 'group2': ['b'] }
*/
var invertBy = createInverter(function(result, value, key) {
if (value != null &&
typeof value.toString != 'function') {
value = nativeObjectToString.call(value);
}
if (hasOwnProperty.call(result, value)) {
result[value].push(key);
} else {
result[value] = [key];
}
}, getIteratee);
/**
* Invokes the method at `path` of `object`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Object
* @param {Object} object The object to query.
* @param {Array|string} path The path of the method to invoke.
* @param {...*} [args] The arguments to invoke the method with.
* @returns {*} Returns the result of the invoked method.
* @example
*
* var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };
*
* _.invoke(object, 'a[0].b.c.slice', 1, 3);
* // => [2, 3]
*/
var invoke = baseRest(baseInvoke);
/**
* Creates an array of the own enumerable property names of `object`.
*
* **Note:** Non-object values are coerced to objects. See the
* [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
* for more details.
*
* @static
* @since 0.1.0
* @memberOf _
* @category Object
* @param {Object} object The object to query.
* @returns {Array} Returns the array of property names.
* @example
*
* function Foo() {
* this.a = 1;
* this.b = 2;
* }
*
* Foo.prototype.c = 3;
*
* _.keys(new Foo);
* // => ['a', 'b'] (iteration order is not guaranteed)
*
* _.keys('hi');
* // => ['0', '1']
*/
function keys(object) {
return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);
}
/**
* Creates an array of the own and inherited enumerable property names of `object`.
*
* **Note:** Non-object values are coerced to objects.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Object
* @param {Object} object The object to query.
* @returns {Array} Returns the array of property names.
* @example
*
* function Foo() {
* this.a = 1;
* this.b = 2;
* }
*
* Foo.prototype.c = 3;
*
* _.keysIn(new Foo);
* // => ['a', 'b', 'c'] (iteration order is not guaranteed)
*/
function keysIn(object) {
return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);
}
/**
* The opposite of `_.mapValues`; this method creates an object with the
* same values as `object` and keys generated by running each own enumerable
* string keyed property of `object` thru `iteratee`. The iteratee is invoked
* with three arguments: (value, key, object).
*
* @static
* @memberOf _
* @since 3.8.0
* @category Object
* @param {Object} object The object to iterate over.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @returns {Object} Returns the new mapped object.
* @see _.mapValues
* @example
*
* _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {
* return key + value;
* });
* // => { 'a1': 1, 'b2': 2 }
*/
function mapKeys(object, iteratee) {
var result = {};
iteratee = getIteratee(iteratee, 3);
baseForOwn(object, function(value, key, object) {
baseAssignValue(result, iteratee(value, key, object), value);
});
return result;
}
/**
* Creates an object with the same keys as `object` and values generated
* by running each own enumerable string keyed property of `object` thru
* `iteratee`. The iteratee is invoked with three arguments:
* (value, key, object).
*
* @static
* @memberOf _
* @since 2.4.0
* @category Object
* @param {Object} object The object to iterate over.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @returns {Object} Returns the new mapped object.
* @see _.mapKeys
* @example
*
* var users = {
* 'fred': { 'user': 'fred', 'age': 40 },
* 'pebbles': { 'user': 'pebbles', 'age': 1 }
* };
*
* _.mapValues(users, function(o) { return o.age; });
* // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
*
* // The `_.property` iteratee shorthand.
* _.mapValues(users, 'age');
* // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
*/
function mapValues(object, iteratee) {
var result = {};
iteratee = getIteratee(iteratee, 3);
baseForOwn(object, function(value, key, object) {
baseAssignValue(result, key, iteratee(value, key, object));
});
return result;
}
/**
* This method is like `_.assign` except that it recursively merges own and
* inherited enumerable string keyed properties of source objects into the
* destination object. Source properties that resolve to `undefined` are
* skipped if a destination value exists. Array and plain object properties
* are merged recursively. Other objects and value types are overridden by
* assignment. Source objects are applied from left to right. Subsequent
* sources overwrite property assignments of previous sources.
*
* **Note:** This method mutates `object`.
*
* @static
* @memberOf _
* @since 0.5.0
* @category Object
* @param {Object} object The destination object.
* @param {...Object} [sources] The source objects.
* @returns {Object} Returns `object`.
* @example
*
* var object = {
* 'a': [{ 'b': 2 }, { 'd': 4 }]
* };
*
* var other = {
* 'a': [{ 'c': 3 }, { 'e': 5 }]
* };
*
* _.merge(object, other);
* // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }
*/
var merge = createAssigner(function(object, source, srcIndex) {
baseMerge(object, source, srcIndex);
});
/**
* This method is like `_.merge` except that it accepts `customizer` which
* is invoked to produce the merged values of the destination and source
* properties. If `customizer` returns `undefined`, merging is handled by the
* method instead. The `customizer` is invoked with six arguments:
* (objValue, srcValue, key, object, source, stack).
*
* **Note:** This method mutates `object`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Object
* @param {Object} object The destination object.
* @param {...Object} sources The source objects.
* @param {Function} customizer The function to customize assigned values.
* @returns {Object} Returns `object`.
* @example
*
* function customizer(objValue, srcValue) {
* if (_.isArray(objValue)) {
* return objValue.concat(srcValue);
* }
* }
*
* var object = { 'a': [1], 'b': [2] };
* var other = { 'a': [3], 'b': [4] };
*
* _.mergeWith(object, other, customizer);
* // => { 'a': [1, 3], 'b': [2, 4] }
*/
var mergeWith = createAssigner(function(object, source, srcIndex, customizer) {
baseMerge(object, source, srcIndex, customizer);
});
/**
* The opposite of `_.pick`; this method creates an object composed of the
* own and inherited enumerable property paths of `object` that are not omitted.
*
* **Note:** This method is considerably slower than `_.pick`.
*
* @static
* @since 0.1.0
* @memberOf _
* @category Object
* @param {Object} object The source object.
* @param {...(string|string[])} [paths] The property paths to omit.
* @returns {Object} Returns the new object.
* @example
*
* var object = { 'a': 1, 'b': '2', 'c': 3 };
*
* _.omit(object, ['a', 'c']);
* // => { 'b': '2' }
*/
var omit = flatRest(function(object, paths) {
var result = {};
if (object == null) {
return result;
}
var isDeep = false;
paths = arrayMap(paths, function(path) {
path = castPath(path, object);
isDeep || (isDeep = path.length > 1);
return path;
});
copyObject(object, getAllKeysIn(object), result);
if (isDeep) {
result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);
}
var length = paths.length;
while (length--) {
baseUnset(result, paths[length]);
}
return result;
});
/**
* The opposite of `_.pickBy`; this method creates an object composed of
* the own and inherited enumerable string keyed properties of `object` that
* `predicate` doesn't return truthy for. The predicate is invoked with two
* arguments: (value, key).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Object
* @param {Object} object The source object.
* @param {Function} [predicate=_.identity] The function invoked per property.
* @returns {Object} Returns the new object.
* @example
*
* var object = { 'a': 1, 'b': '2', 'c': 3 };
*
* _.omitBy(object, _.isNumber);
* // => { 'b': '2' }
*/
function omitBy(object, predicate) {
return pickBy(object, negate(getIteratee(predicate)));
}
/**
* Creates an object composed of the picked `object` properties.
*
* @static
* @since 0.1.0
* @memberOf _
* @category Object
* @param {Object} object The source object.
* @param {...(string|string[])} [paths] The property paths to pick.
* @returns {Object} Returns the new object.
* @example
*
* var object = { 'a': 1, 'b': '2', 'c': 3 };
*
* _.pick(object, ['a', 'c']);
* // => { 'a': 1, 'c': 3 }
*/
var pick = flatRest(function(object, paths) {
return object == null ? {} : basePick(object, paths);
});
/**
* Creates an object composed of the `object` properties `predicate` returns
* truthy for. The predicate is invoked with two arguments: (value, key).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Object
* @param {Object} object The source object.
* @param {Function} [predicate=_.identity] The function invoked per property.
* @returns {Object} Returns the new object.
* @example
*
* var object = { 'a': 1, 'b': '2', 'c': 3 };
*
* _.pickBy(object, _.isNumber);
* // => { 'a': 1, 'c': 3 }
*/
function pickBy(object, predicate) {
if (object == null) {
return {};
}
var props = arrayMap(getAllKeysIn(object), function(prop) {
return [prop];
});
predicate = getIteratee(predicate);
return basePickBy(object, props, function(value, path) {
return predicate(value, path[0]);
});
}
/**
* This method is like `_.get` except that if the resolved value is a
* function it's invoked with the `this` binding of its parent object and
* its result is returned.
*
* @static
* @since 0.1.0
* @memberOf _
* @category Object
* @param {Object} object The object to query.
* @param {Array|string} path The path of the property to resolve.
* @param {*} [defaultValue] The value returned for `undefined` resolved values.
* @returns {*} Returns the resolved value.
* @example
*
* var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };
*
* _.result(object, 'a[0].b.c1');
* // => 3
*
* _.result(object, 'a[0].b.c2');
* // => 4
*
* _.result(object, 'a[0].b.c3', 'default');
* // => 'default'
*
* _.result(object, 'a[0].b.c3', _.constant('default'));
* // => 'default'
*/
function result(object, path, defaultValue) {
path = castPath(path, object);
var index = -1,
length = path.length;
// Ensure the loop is entered when path is empty.
if (!length) {
length = 1;
object = undefined;
}
while (++index < length) {
var value = object == null ? undefined : object[toKey(path[index])];
if (value === undefined) {
index = length;
value = defaultValue;
}
object = isFunction(value) ? value.call(object) : value;
}
return object;
}
/**
* Sets the value at `path` of `object`. If a portion of `path` doesn't exist,
* it's created. Arrays are created for missing index properties while objects
* are created for all other missing properties. Use `_.setWith` to customize
* `path` creation.
*
* **Note:** This method mutates `object`.
*
* @static
* @memberOf _
* @since 3.7.0
* @category Object
* @param {Object} object The object to modify.
* @param {Array|string} path The path of the property to set.
* @param {*} value The value to set.
* @returns {Object} Returns `object`.
* @example
*
* var object = { 'a': [{ 'b': { 'c': 3 } }] };
*
* _.set(object, 'a[0].b.c', 4);
* console.log(object.a[0].b.c);
* // => 4
*
* _.set(object, ['x', '0', 'y', 'z'], 5);
* console.log(object.x[0].y.z);
* // => 5
*/
function set(object, path, value) {
return object == null ? object : baseSet(object, path, value);
}
/**
* This method is like `_.set` except that it accepts `customizer` which is
* invoked to produce the objects of `path`. If `customizer` returns `undefined`
* path creation is handled by the method instead. The `customizer` is invoked
* with three arguments: (nsValue, key, nsObject).
*
* **Note:** This method mutates `object`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Object
* @param {Object} object The object to modify.
* @param {Array|string} path The path of the property to set.
* @param {*} value The value to set.
* @param {Function} [customizer] The function to customize assigned values.
* @returns {Object} Returns `object`.
* @example
*
* var object = {};
*
* _.setWith(object, '[0][1]', 'a', Object);
* // => { '0': { '1': 'a' } }
*/
function setWith(object, path, value, customizer) {
customizer = typeof customizer == 'function' ? customizer : undefined;
return object == null ? object : baseSet(object, path, value, customizer);
}
/**
* Creates an array of own enumerable string keyed-value pairs for `object`
* which can be consumed by `_.fromPairs`. If `object` is a map or set, its
* entries are returned.
*
* @static
* @memberOf _
* @since 4.0.0
* @alias entries
* @category Object
* @param {Object} object The object to query.
* @returns {Array} Returns the key-value pairs.
* @example
*
* function Foo() {
* this.a = 1;
* this.b = 2;
* }
*
* Foo.prototype.c = 3;
*
* _.toPairs(new Foo);
* // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)
*/
var toPairs = createToPairs(keys);
/**
* Creates an array of own and inherited enumerable string keyed-value pairs
* for `object` which can be consumed by `_.fromPairs`. If `object` is a map
* or set, its entries are returned.
*
* @static
* @memberOf _
* @since 4.0.0
* @alias entriesIn
* @category Object
* @param {Object} object The object to query.
* @returns {Array} Returns the key-value pairs.
* @example
*
* function Foo() {
* this.a = 1;
* this.b = 2;
* }
*
* Foo.prototype.c = 3;
*
* _.toPairsIn(new Foo);
* // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)
*/
var toPairsIn = createToPairs(keysIn);
/**
* An alternative to `_.reduce`; this method transforms `object` to a new
* `accumulator` object which is the result of running each of its own
* enumerable string keyed properties thru `iteratee`, with each invocation
* potentially mutating the `accumulator` object. If `accumulator` is not
* provided, a new object with the same `[[Prototype]]` will be used. The
* iteratee is invoked with four arguments: (accumulator, value, key, object).
* Iteratee functions may exit iteration early by explicitly returning `false`.
*
* @static
* @memberOf _
* @since 1.3.0
* @category Object
* @param {Object} object The object to iterate over.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @param {*} [accumulator] The custom accumulator value.
* @returns {*} Returns the accumulated value.
* @example
*
* _.transform([2, 3, 4], function(result, n) {
* result.push(n *= n);
* return n % 2 == 0;
* }, []);
* // => [4, 9]
*
* _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
* (result[value] || (result[value] = [])).push(key);
* }, {});
* // => { '1': ['a', 'c'], '2': ['b'] }
*/
function transform(object, iteratee, accumulator) {
var isArr = isArray(object),
isArrLike = isArr || isBuffer(object) || isTypedArray(object);
iteratee = getIteratee(iteratee, 4);
if (accumulator == null) {
var Ctor = object && object.constructor;
if (isArrLike) {
accumulator = isArr ? new Ctor : [];
}
else if (isObject(object)) {
accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};
}
else {
accumulator = {};
}
}
(isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) {
return iteratee(accumulator, value, index, object);
});
return accumulator;
}
/**
* Removes the property at `path` of `object`.
*
* **Note:** This method mutates `object`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Object
* @param {Object} object The object to modify.
* @param {Array|string} path The path of the property to unset.
* @returns {boolean} Returns `true` if the property is deleted, else `false`.
* @example
*
* var object = { 'a': [{ 'b': { 'c': 7 } }] };
* _.unset(object, 'a[0].b.c');
* // => true
*
* console.log(object);
* // => { 'a': [{ 'b': {} }] };
*
* _.unset(object, ['a', '0', 'b', 'c']);
* // => true
*
* console.log(object);
* // => { 'a': [{ 'b': {} }] };
*/
function unset(object, path) {
return object == null ? true : baseUnset(object, path);
}
/**
* This method is like `_.set` except that accepts `updater` to produce the
* value to set. Use `_.updateWith` to customize `path` creation. The `updater`
* is invoked with one argument: (value).
*
* **Note:** This method mutates `object`.
*
* @static
* @memberOf _
* @since 4.6.0
* @category Object
* @param {Object} object The object to modify.
* @param {Array|string} path The path of the property to set.
* @param {Function} updater The function to produce the updated value.
* @returns {Object} Returns `object`.
* @example
*
* var object = { 'a': [{ 'b': { 'c': 3 } }] };
*
* _.update(object, 'a[0].b.c', function(n) { return n * n; });
* console.log(object.a[0].b.c);
* // => 9
*
* _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });
* console.log(object.x[0].y.z);
* // => 0
*/
function update(object, path, updater) {
return object == null ? object : baseUpdate(object, path, castFunction(updater));
}
/**
* This method is like `_.update` except that it accepts `customizer` which is
* invoked to produce the objects of `path`. If `customizer` returns `undefined`
* path creation is handled by the method instead. The `customizer` is invoked
* with three arguments: (nsValue, key, nsObject).
*
* **Note:** This method mutates `object`.
*
* @static
* @memberOf _
* @since 4.6.0
* @category Object
* @param {Object} object The object to modify.
* @param {Array|string} path The path of the property to set.
* @param {Function} updater The function to produce the updated value.
* @param {Function} [customizer] The function to customize assigned values.
* @returns {Object} Returns `object`.
* @example
*
* var object = {};
*
* _.updateWith(object, '[0][1]', _.constant('a'), Object);
* // => { '0': { '1': 'a' } }
*/
function updateWith(object, path, updater, customizer) {
customizer = typeof customizer == 'function' ? customizer : undefined;
return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);
}
/**
* Creates an array of the own enumerable string keyed property values of `object`.
*
* **Note:** Non-object values are coerced to objects.
*
* @static
* @since 0.1.0
* @memberOf _
* @category Object
* @param {Object} object The object to query.
* @returns {Array} Returns the array of property values.
* @example
*
* function Foo() {
* this.a = 1;
* this.b = 2;
* }
*
* Foo.prototype.c = 3;
*
* _.values(new Foo);
* // => [1, 2] (iteration order is not guaranteed)
*
* _.values('hi');
* // => ['h', 'i']
*/
function values(object) {
return object == null ? [] : baseValues(object, keys(object));
}
/**
* Creates an array of the own and inherited enumerable string keyed property
* values of `object`.
*
* **Note:** Non-object values are coerced to objects.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Object
* @param {Object} object The object to query.
* @returns {Array} Returns the array of property values.
* @example
*
* function Foo() {
* this.a = 1;
* this.b = 2;
* }
*
* Foo.prototype.c = 3;
*
* _.valuesIn(new Foo);
* // => [1, 2, 3] (iteration order is not guaranteed)
*/
function valuesIn(object) {
return object == null ? [] : baseValues(object, keysIn(object));
}
/*------------------------------------------------------------------------*/
/**
* Clamps `number` within the inclusive `lower` and `upper` bounds.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Number
* @param {number} number The number to clamp.
* @param {number} [lower] The lower bound.
* @param {number} upper The upper bound.
* @returns {number} Returns the clamped number.
* @example
*
* _.clamp(-10, -5, 5);
* // => -5
*
* _.clamp(10, -5, 5);
* // => 5
*/
function clamp(number, lower, upper) {
if (upper === undefined) {
upper = lower;
lower = undefined;
}
if (upper !== undefined) {
upper = toNumber(upper);
upper = upper === upper ? upper : 0;
}
if (lower !== undefined) {
lower = toNumber(lower);
lower = lower === lower ? lower : 0;
}
return baseClamp(toNumber(number), lower, upper);
}
/**
* Checks if `n` is between `start` and up to, but not including, `end`. If
* `end` is not specified, it's set to `start` with `start` then set to `0`.
* If `start` is greater than `end` the params are swapped to support
* negative ranges.
*
* @static
* @memberOf _
* @since 3.3.0
* @category Number
* @param {number} number The number to check.
* @param {number} [start=0] The start of the range.
* @param {number} end The end of the range.
* @returns {boolean} Returns `true` if `number` is in the range, else `false`.
* @see _.range, _.rangeRight
* @example
*
* _.inRange(3, 2, 4);
* // => true
*
* _.inRange(4, 8);
* // => true
*
* _.inRange(4, 2);
* // => false
*
* _.inRange(2, 2);
* // => false
*
* _.inRange(1.2, 2);
* // => true
*
* _.inRange(5.2, 4);
* // => false
*
* _.inRange(-3, -2, -6);
* // => true
*/
function inRange(number, start, end) {
start = toFinite(start);
if (end === undefined) {
end = start;
start = 0;
} else {
end = toFinite(end);
}
number = toNumber(number);
return baseInRange(number, start, end);
}
/**
* Produces a random number between the inclusive `lower` and `upper` bounds.
* If only one argument is provided a number between `0` and the given number
* is returned. If `floating` is `true`, or either `lower` or `upper` are
* floats, a floating-point number is returned instead of an integer.
*
* **Note:** JavaScript follows the IEEE-754 standard for resolving
* floating-point values which can produce unexpected results.
*
* @static
* @memberOf _
* @since 0.7.0
* @category Number
* @param {number} [lower=0] The lower bound.
* @param {number} [upper=1] The upper bound.
* @param {boolean} [floating] Specify returning a floating-point number.
* @returns {number} Returns the random number.
* @example
*
* _.random(0, 5);
* // => an integer between 0 and 5
*
* _.random(5);
* // => also an integer between 0 and 5
*
* _.random(5, true);
* // => a floating-point number between 0 and 5
*
* _.random(1.2, 5.2);
* // => a floating-point number between 1.2 and 5.2
*/
function random(lower, upper, floating) {
if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {
upper = floating = undefined;
}
if (floating === undefined) {
if (typeof upper == 'boolean') {
floating = upper;
upper = undefined;
}
else if (typeof lower == 'boolean') {
floating = lower;
lower = undefined;
}
}
if (lower === undefined && upper === undefined) {
lower = 0;
upper = 1;
}
else {
lower = toFinite(lower);
if (upper === undefined) {
upper = lower;
lower = 0;
} else {
upper = toFinite(upper);
}
}
if (lower > upper) {
var temp = lower;
lower = upper;
upper = temp;
}
if (floating || lower % 1 || upper % 1) {
var rand = nativeRandom();
return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper);
}
return baseRandom(lower, upper);
}
/*------------------------------------------------------------------------*/
/**
* Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).
*
* @static
* @memberOf _
* @since 3.0.0
* @category String
* @param {string} [string=''] The string to convert.
* @returns {string} Returns the camel cased string.
* @example
*
* _.camelCase('Foo Bar');
* // => 'fooBar'
*
* _.camelCase('--foo-bar--');
* // => 'fooBar'
*
* _.camelCase('__FOO_BAR__');
* // => 'fooBar'
*/
var camelCase = createCompounder(function(result, word, index) {
word = word.toLowerCase();
return result + (index ? capitalize(word) : word);
});
/**
* Converts the first character of `string` to upper case and the remaining
* to lower case.
*
* @static
* @memberOf _
* @since 3.0.0
* @category String
* @param {string} [string=''] The string to capitalize.
* @returns {string} Returns the capitalized string.
* @example
*
* _.capitalize('FRED');
* // => 'Fred'
*/
function capitalize(string) {
return upperFirst(toString(string).toLowerCase());
}
/**
* Deburrs `string` by converting
* [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
* and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)
* letters to basic Latin letters and removing
* [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
*
* @static
* @memberOf _
* @since 3.0.0
* @category String
* @param {string} [string=''] The string to deburr.
* @returns {string} Returns the deburred string.
* @example
*
* _.deburr('déjà vu');
* // => 'deja vu'
*/
function deburr(string) {
string = toString(string);
return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');
}
/**
* Checks if `string` ends with the given target string.
*
* @static
* @memberOf _
* @since 3.0.0
* @category String
* @param {string} [string=''] The string to inspect.
* @param {string} [target] The string to search for.
* @param {number} [position=string.length] The position to search up to.
* @returns {boolean} Returns `true` if `string` ends with `target`,
* else `false`.
* @example
*
* _.endsWith('abc', 'c');
* // => true
*
* _.endsWith('abc', 'b');
* // => false
*
* _.endsWith('abc', 'b', 2);
* // => true
*/
function endsWith(string, target, position) {
string = toString(string);
target = baseToString(target);
var length = string.length;
position = position === undefined
? length
: baseClamp(toInteger(position), 0, length);
var end = position;
position -= target.length;
return position >= 0 && string.slice(position, end) == target;
}
/**
* Converts the characters "&", "<", ">", '"', and "'" in `string` to their
* corresponding HTML entities.
*
* **Note:** No other characters are escaped. To escape additional
* characters use a third-party library like [_he_](https://mths.be/he).
*
* Though the ">" character is escaped for symmetry, characters like
* ">" and "/" don't need escaping in HTML and have no special meaning
* unless they're part of a tag or unquoted attribute value. See
* [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)
* (under "semi-related fun fact") for more details.
*
* When working with HTML you should always
* [quote attribute values](http://wonko.com/post/html-escaping) to reduce
* XSS vectors.
*
* @static
* @since 0.1.0
* @memberOf _
* @category String
* @param {string} [string=''] The string to escape.
* @returns {string} Returns the escaped string.
* @example
*
* _.escape('fred, barney, & pebbles');
* // => 'fred, barney, & pebbles'
*/
function escape(string) {
string = toString(string);
return (string && reHasUnescapedHtml.test(string))
? string.replace(reUnescapedHtml, escapeHtmlChar)
: string;
}
/**
* Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+",
* "?", "(", ")", "[", "]", "{", "}", and "|" in `string`.
*
* @static
* @memberOf _
* @since 3.0.0
* @category String
* @param {string} [string=''] The string to escape.
* @returns {string} Returns the escaped string.
* @example
*
* _.escapeRegExp('[lodash](https://lodash.com/)');
* // => '\[lodash\]\(https://lodash\.com/\)'
*/
function escapeRegExp(string) {
string = toString(string);
return (string && reHasRegExpChar.test(string))
? string.replace(reRegExpChar, '\\$&')
: string;
}
/**
* Converts `string` to
* [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).
*
* @static
* @memberOf _
* @since 3.0.0
* @category String
* @param {string} [string=''] The string to convert.
* @returns {string} Returns the kebab cased string.
* @example
*
* _.kebabCase('Foo Bar');
* // => 'foo-bar'
*
* _.kebabCase('fooBar');
* // => 'foo-bar'
*
* _.kebabCase('__FOO_BAR__');
* // => 'foo-bar'
*/
var kebabCase = createCompounder(function(result, word, index) {
return result + (index ? '-' : '') + word.toLowerCase();
});
/**
* Converts `string`, as space separated words, to lower case.
*
* @static
* @memberOf _
* @since 4.0.0
* @category String
* @param {string} [string=''] The string to convert.
* @returns {string} Returns the lower cased string.
* @example
*
* _.lowerCase('--Foo-Bar--');
* // => 'foo bar'
*
* _.lowerCase('fooBar');
* // => 'foo bar'
*
* _.lowerCase('__FOO_BAR__');
* // => 'foo bar'
*/
var lowerCase = createCompounder(function(result, word, index) {
return result + (index ? ' ' : '') + word.toLowerCase();
});
/**
* Converts the first character of `string` to lower case.
*
* @static
* @memberOf _
* @since 4.0.0
* @category String
* @param {string} [string=''] The string to convert.
* @returns {string} Returns the converted string.
* @example
*
* _.lowerFirst('Fred');
* // => 'fred'
*
* _.lowerFirst('FRED');
* // => 'fRED'
*/
var lowerFirst = createCaseFirst('toLowerCase');
/**
* Pads `string` on the left and right sides if it's shorter than `length`.
* Padding characters are truncated if they can't be evenly divided by `length`.
*
* @static
* @memberOf _
* @since 3.0.0
* @category String
* @param {string} [string=''] The string to pad.
* @param {number} [length=0] The padding length.
* @param {string} [chars=' '] The string used as padding.
* @returns {string} Returns the padded string.
* @example
*
* _.pad('abc', 8);
* // => ' abc '
*
* _.pad('abc', 8, '_-');
* // => '_-abc_-_'
*
* _.pad('abc', 3);
* // => 'abc'
*/
function pad(string, length, chars) {
string = toString(string);
length = toInteger(length);
var strLength = length ? stringSize(string) : 0;
if (!length || strLength >= length) {
return string;
}
var mid = (length - strLength) / 2;
return (
createPadding(nativeFloor(mid), chars) +
string +
createPadding(nativeCeil(mid), chars)
);
}
/**
* Pads `string` on the right side if it's shorter than `length`. Padding
* characters are truncated if they exceed `length`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category String
* @param {string} [string=''] The string to pad.
* @param {number} [length=0] The padding length.
* @param {string} [chars=' '] The string used as padding.
* @returns {string} Returns the padded string.
* @example
*
* _.padEnd('abc', 6);
* // => 'abc '
*
* _.padEnd('abc', 6, '_-');
* // => 'abc_-_'
*
* _.padEnd('abc', 3);
* // => 'abc'
*/
function padEnd(string, length, chars) {
string = toString(string);
length = toInteger(length);
var strLength = length ? stringSize(string) : 0;
return (length && strLength < length)
? (string + createPadding(length - strLength, chars))
: string;
}
/**
* Pads `string` on the left side if it's shorter than `length`. Padding
* characters are truncated if they exceed `length`.
*
* @static
* @memberOf _
* @since 4.0.0
* @category String
* @param {string} [string=''] The string to pad.
* @param {number} [length=0] The padding length.
* @param {string} [chars=' '] The string used as padding.
* @returns {string} Returns the padded string.
* @example
*
* _.padStart('abc', 6);
* // => ' abc'
*
* _.padStart('abc', 6, '_-');
* // => '_-_abc'
*
* _.padStart('abc', 3);
* // => 'abc'
*/
function padStart(string, length, chars) {
string = toString(string);
length = toInteger(length);
var strLength = length ? stringSize(string) : 0;
return (length && strLength < length)
? (createPadding(length - strLength, chars) + string)
: string;
}
/**
* Converts `string` to an integer of the specified radix. If `radix` is
* `undefined` or `0`, a `radix` of `10` is used unless `value` is a
* hexadecimal, in which case a `radix` of `16` is used.
*
* **Note:** This method aligns with the
* [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.
*
* @static
* @memberOf _
* @since 1.1.0
* @category String
* @param {string} string The string to convert.
* @param {number} [radix=10] The radix to interpret `value` by.
* @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
* @returns {number} Returns the converted integer.
* @example
*
* _.parseInt('08');
* // => 8
*
* _.map(['6', '08', '10'], _.parseInt);
* // => [6, 8, 10]
*/
function parseInt(string, radix, guard) {
if (guard || radix == null) {
radix = 0;
} else if (radix) {
radix = +radix;
}
return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);
}
/**
* Repeats the given string `n` times.
*
* @static
* @memberOf _
* @since 3.0.0
* @category String
* @param {string} [string=''] The string to repeat.
* @param {number} [n=1] The number of times to repeat the string.
* @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
* @returns {string} Returns the repeated string.
* @example
*
* _.repeat('*', 3);
* // => '***'
*
* _.repeat('abc', 2);
* // => 'abcabc'
*
* _.repeat('abc', 0);
* // => ''
*/
function repeat(string, n, guard) {
if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) {
n = 1;
} else {
n = toInteger(n);
}
return baseRepeat(toString(string), n);
}
/**
* Replaces matches for `pattern` in `string` with `replacement`.
*
* **Note:** This method is based on
* [`String#replace`](https://mdn.io/String/replace).
*
* @static
* @memberOf _
* @since 4.0.0
* @category String
* @param {string} [string=''] The string to modify.
* @param {RegExp|string} pattern The pattern to replace.
* @param {Function|string} replacement The match replacement.
* @returns {string} Returns the modified string.
* @example
*
* _.replace('Hi Fred', 'Fred', 'Barney');
* // => 'Hi Barney'
*/
function replace() {
var args = arguments,
string = toString(args[0]);
return args.length < 3 ? string : string.replace(args[1], args[2]);
}
/**
* Converts `string` to
* [snake case](https://en.wikipedia.org/wiki/Snake_case).
*
* @static
* @memberOf _
* @since 3.0.0
* @category String
* @param {string} [string=''] The string to convert.
* @returns {string} Returns the snake cased string.
* @example
*
* _.snakeCase('Foo Bar');
* // => 'foo_bar'
*
* _.snakeCase('fooBar');
* // => 'foo_bar'
*
* _.snakeCase('--FOO-BAR--');
* // => 'foo_bar'
*/
var snakeCase = createCompounder(function(result, word, index) {
return result + (index ? '_' : '') + word.toLowerCase();
});
/**
* Splits `string` by `separator`.
*
* **Note:** This method is based on
* [`String#split`](https://mdn.io/String/split).
*
* @static
* @memberOf _
* @since 4.0.0
* @category String
* @param {string} [string=''] The string to split.
* @param {RegExp|string} separator The separator pattern to split by.
* @param {number} [limit] The length to truncate results to.
* @returns {Array} Returns the string segments.
* @example
*
* _.split('a-b-c', '-', 2);
* // => ['a', 'b']
*/
function split(string, separator, limit) {
if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {
separator = limit = undefined;
}
limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;
if (!limit) {
return [];
}
string = toString(string);
if (string && (
typeof separator == 'string' ||
(separator != null && !isRegExp(separator))
)) {
separator = baseToString(separator);
if (!separator && hasUnicode(string)) {
return castSlice(stringToArray(string), 0, limit);
}
}
return string.split(separator, limit);
}
/**
* Converts `string` to
* [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).
*
* @static
* @memberOf _
* @since 3.1.0
* @category String
* @param {string} [string=''] The string to convert.
* @returns {string} Returns the start cased string.
* @example
*
* _.startCase('--foo-bar--');
* // => 'Foo Bar'
*
* _.startCase('fooBar');
* // => 'Foo Bar'
*
* _.startCase('__FOO_BAR__');
* // => 'FOO BAR'
*/
var startCase = createCompounder(function(result, word, index) {
return result + (index ? ' ' : '') + upperFirst(word);
});
/**
* Checks if `string` starts with the given target string.
*
* @static
* @memberOf _
* @since 3.0.0
* @category String
* @param {string} [string=''] The string to inspect.
* @param {string} [target] The string to search for.
* @param {number} [position=0] The position to search from.
* @returns {boolean} Returns `true` if `string` starts with `target`,
* else `false`.
* @example
*
* _.startsWith('abc', 'a');
* // => true
*
* _.startsWith('abc', 'b');
* // => false
*
* _.startsWith('abc', 'b', 1);
* // => true
*/
function startsWith(string, target, position) {
string = toString(string);
position = position == null
? 0
: baseClamp(toInteger(position), 0, string.length);
target = baseToString(target);
return string.slice(position, position + target.length) == target;
}
/**
* Creates a compiled template function that can interpolate data properties
* in "interpolate" delimiters, HTML-escape interpolated data properties in
* "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data
* properties may be accessed as free variables in the template. If a setting
* object is given, it takes precedence over `_.templateSettings` values.
*
* **Note:** In the development build `_.template` utilizes
* [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)
* for easier debugging.
*
* For more information on precompiling templates see
* [lodash's custom builds documentation](https://lodash.com/custom-builds).
*
* For more information on Chrome extension sandboxes see
* [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).
*
* @static
* @since 0.1.0
* @memberOf _
* @category String
* @param {string} [string=''] The template string.
* @param {Object} [options={}] The options object.
* @param {RegExp} [options.escape=_.templateSettings.escape]
* The HTML "escape" delimiter.
* @param {RegExp} [options.evaluate=_.templateSettings.evaluate]
* The "evaluate" delimiter.
* @param {Object} [options.imports=_.templateSettings.imports]
* An object to import into the template as free variables.
* @param {RegExp} [options.interpolate=_.templateSettings.interpolate]
* The "interpolate" delimiter.
* @param {string} [options.sourceURL='lodash.templateSources[n]']
* The sourceURL of the compiled template.
* @param {string} [options.variable='obj']
* The data object variable name.
* @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
* @returns {Function} Returns the compiled template function.
* @example
*
* // Use the "interpolate" delimiter to create a compiled template.
* var compiled = _.template('hello <%= user %>!');
* compiled({ 'user': 'fred' });
* // => 'hello fred!'
*
* // Use the HTML "escape" delimiter to escape data property values.
* var compiled = _.template('<%- value %>');
* compiled({ 'value': '