language
stringlengths 0
24
| filename
stringlengths 9
214
| code
stringlengths 99
9.93M
|
|---|---|---|
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/45-soft-types-01.hack | // @generated by hh_manual from manual/hack/10-types/45-soft-types.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function probably_int(<<__Soft>> int $x): @int {
return $x + 1;
}
function definitely_int(int $x): int {
return $x + 1;
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/46-generic-types-stack.hack | // @generated by hh_manual from manual/hack/10-types/46-generic-types.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
class StackUnderflowException extends Exception {}
class Stack<T> {
private vec<T> $stack;
private int $stackPtr;
public function __construct() {
$this->stackPtr = 0;
$this->stack = vec[];
}
public function push(T $value): void {
$this->stack[] = $value;
$this->stackPtr++;
}
public function pop(): T {
if ($this->stackPtr > 0) {
$this->stackPtr--;
return $this->stack[$this->stackPtr];
} else {
throw new StackUnderflowException();
}
}
}
function use_int_stack(Stack<int> $stInt): void {
$stInt->push(10);
$stInt->push(20);
$stInt->push(30);
echo 'pop => '.$stInt->pop()."\n";
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/67-nullable-types-01.hack | // @generated by hh_manual from manual/hack/10-types/67-nullable-types.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function takes_nullable_str(?string $s): string {
if ($s is null){
return "default";
} else {
return $s;
}
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/67-nullable-types-02.hack | // @generated by hh_manual from manual/hack/10-types/67-nullable-types.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function takes_nullable_str2(?string $s): string {
if ($s is nonnull){
return $s;
} else {
return "default";
}
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/67-nullable-types-03.hack | // @generated by hh_manual from manual/hack/10-types/67-nullable-types.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function my_filter_nulls<T as nonnull>(vec<?T> $items): vec<T> {
$result = vec[];
foreach ($items as $item) {
if ($item is null) {
// Discard it.
} else {
$result[] = $item;
}
}
return $result;
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/79-type-aliases-01.hack | // @generated by hh_manual from manual/hack/10-types/79-type-aliases.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
type Complex = shape('real' => float, 'imag' => float);
newtype Point = (float, float); |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/79-type-aliases-02.hack | // @generated by hh_manual from manual/hack/10-types/79-type-aliases.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
newtype Point = (float, float);
function create_Point(float $x, float $y): Point {
return tuple($x, $y);
}
function distance(Point $p1, Point $p2): float {
$dx = $p1[0] - $p2[0];
$dy = $p1[1] - $p2[1];
return sqrt($dx*$dx + $dy*$dy);
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/79-type-aliases-03.hack | // @generated by hh_manual from manual/hack/10-types/79-type-aliases.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
newtype Widget = int; |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/79-type-aliases-04.hack | // @generated by hh_manual from manual/hack/10-types/79-type-aliases.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
newtype Counter = int; |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/79-type-aliases-05.hack | // @generated by hh_manual from manual/hack/10-types/79-type-aliases.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
newtype Counter as int = int; |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/85-type-refinement-01.hack | // @generated by hh_manual from manual/hack/10-types/85-type-refinement.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function f1(?int $p): void {
// $x = $p % 3; // rejected; % not defined for ?int
if ($p is int) { // type refinement occurs; $p has type int
$x = $p % 3; // accepted; % defined for int
}
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/85-type-refinement-02.hack | // @generated by hh_manual from manual/hack/10-types/85-type-refinement.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function f2(?int $p): void {
if ($p is null) { // type refinement occurs; $p has type null
// $x = $p % 3; // rejected; % not defined for null
} else { // type refinement occurs; $p has type int
$x = $p % 3; // accepted; % defined for int
}
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/85-type-refinement-03.hack | // @generated by hh_manual from manual/hack/10-types/85-type-refinement.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function f3(?int $p): void {
if (!$p is null) { // type refinement occurs; $p has type int
$x = $p % 3; // accepted; % defined for int
}
if ($p is nonnull) { // type refinement occurs; $p has type int
$x = $p % 3; // accepted; % defined for int
}
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/85-type-refinement-04.hack | // @generated by hh_manual from manual/hack/10-types/85-type-refinement.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function f4(?num $p): void {
if (($p is int) || ($p is float)) {
// $x = $p**2; // rejected
}
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/85-type-refinement-05.hack | // @generated by hh_manual from manual/hack/10-types/85-type-refinement.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
class C {
private ?int $p = 8; // holds an int, but type is ?int
public function m(): void {
if ($this->p is int) { // type refinement occurs; $this->p is int
$x = $this->p << 2; // allowed; type is int
$this->n(); // could involve a permanent type refinement on $p
// $x = $this->p << 2; // disallowed; might no longer be int
}
}
public function n(): void { /* ... */ }
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/86-with-refinement-box-with-type+ctx.hack | // @generated by hh_manual from manual/hack/10-types/86-with-refinement.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
interface Box {
abstract const type T;
abstract const ctx C super [defaults];
public function get()[this::C]: this::T;
}
function unwrap_as_singleton_set<Tb as arraykey>(
Box with { type T = Tb } $int_or_string_box
): Set<Tb> {
return Set { $int_or_string_box->get() };
}
function unwrap_pure<Tb>(
Box with { ctx C = []; type T = Tb } $box,
)[]: Tb {
return $box->get(); // OK (type-checker knows `get` must have the empty context list)
}
// API
function wrap_number(num $x): Box with { type T = num } {
return new IntBox($x);
}
// implementation details (subject to change):
class IntBox implements Box {
const type T = num;
const ctx C = [];
public function __construct(private this::T $v) {}
public function get()[]: this::T { return $this->v; }
}
function boxed_sum(
Traversable<Box with { type T as num }> $numeric_boxes
): float {
$sum = 0.0;
foreach ($numeric_boxes as $nb) {
$sum += $nb->get();
}
return $sum;
}
interface MeasuredBox extends Box {
abstract const type TQuantity;
public function getQuantity(): this::TQuantity;
}
function weigh_bulk_unsafe<TBox as MeasuredBox>(TBox $box): float
where TBox::TQuantity = float {
return $box->getQuantity();
}
function weigh_bulk(MeasuredBox with { type TQuantity = float } $box): float {
return $box->getQuantity();
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/88-type-inferencing-01.hack | // @generated by hh_manual from manual/hack/10-types/88-type-inferencing.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function foo(int $i): void {
$v = 100;
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/88-type-inferencing-02.hack | // @generated by hh_manual from manual/hack/10-types/88-type-inferencing.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function g(int $p1 = -1): void {
// on entry to the function, $p1 has the declared type int
// ...
$p1 = 23.56; // $p1 has type float
// ...
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/88-type-inferencing-03.hack | // @generated by hh_manual from manual/hack/10-types/88-type-inferencing.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
async function example_snippet_wrapper(): Awaitable<void> {
$doubler = $p ==> $p * 2;
$doubler(3);
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/88-type-inferencing-04.hack | // @generated by hh_manual from manual/hack/10-types/88-type-inferencing.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
async function example_snippet_wrapper(): Awaitable<void> {
$doubler = (int $p) ==> $p * 2;
$doubler = ($p = 0) ==> $p * 2;
$doubler = ($p): int ==> $p * 2;
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/10-types/88-type-inferencing-c.hack | // @generated by hh_manual from manual/hack/10-types/88-type-inferencing.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function f(): void {
$v = 'acb'; // $v has type string
// ...
$v = true; // $v has type bool
// ...
$v = dict['red' => 10, 'green' => 15]; // $v has type dict<string, int>
// ...
$v = new C(); // $v has type C
}
class C {
const C1 = 10; // type int inferred from initializer
const string C2 = "red"; // type string declared
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/04-bool-01.hack | // @generated by hh_manual from manual/hack/11-built-in-types/04-bool.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function is_leap_year(int $yy): bool {
return ((($yy & 3) === 0) && (($yy % 100) !== 0)) || (($yy % 400) === 0);
}
<<__EntryPoint>>
function main(): void {
$result = is_leap_year(1900);
echo "1900 is ".(($result === true) ? "" : "not ")."a leap year\n";
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/07-int-01.hack | // @generated by hh_manual from manual/hack/11-built-in-types/07-int.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function is_leap_year(int $yy): bool {
return ((($yy & 3) === 0) && (($yy % 100) !== 0)) || (($yy % 400) === 0);
}
<<__EntryPoint>>
function main(): void {
$year = 2001;
$result = is_leap_year($year);
echo "$year is ".(($result === true) ? "" : "not ")."a leap year\n";
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/10-float-01.hack | // @generated by hh_manual from manual/hack/11-built-in-types/10-float.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function average_float(float $p1, float $p2): float {
return ($p1 + $p2) / 2.0;
}
<<__EntryPoint>>
function main(): void {
$val = 3e6;
$result = average_float($val, 5.2E-2);
echo "\$result is ".$result."\n";
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/13-num-01.hack | // @generated by hh_manual from manual/hack/11-built-in-types/13-num.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
class Point {
private float $x;
private float $y;
public function __construct(num $x = 0, num $y = 0) {
$this->x = (float)$x;
$this->y = (float)$y;
}
public function move(num $x = 0, num $y = 0): void {
$this->x = (float)$x;
$this->y = (float)$y;
}
// ...
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/16-string-01.hack | // @generated by hh_manual from manual/hack/11-built-in-types/16-string.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
use namespace HH\Lib\{Locale,Str};
<<__EntryPoint>>
function main(): void {
$haystack = "abc\u{00e9}"; // ends with UTF-8 "LATIN SMALL LETTER E ACUTE"
$needle = "\u{0065}\u{0301}"; // "LATIN SMALL LETTER E", "COMBINING ACUTE ACCENT"
$locale = Locale\create("en_US.UTF-8");
\var_dump(dict[
'Byte test' => Str\ends_with($haystack, $needle), // false
'Character test' => Str\ends_with_l($locale, $haystack, $needle), // true
'Strip byte suffix' => Str\strip_suffix($haystack, $needle), // no change
'Strip character suffix' => Str\strip_suffix_l($locale, $haystack, $needle), // removed
]);
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/19-void-01.hack | // @generated by hh_manual from manual/hack/11-built-in-types/19-void.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function draw_line(Point $p1, Point $p2): void { /* ... */ }
class Point {
private float $x;
private float $y;
public function __construct(num $x = 0, num $y = 0) {
$this->x = (float)$x;
$this->y = (float)$y;
}
public function move(num $x = 0, num $y = 0): void {
$this->x = (float)$x;
$this->y = (float)$y;
}
// ...
}
<<__EntryPoint>>
function main(): void {
draw_line(new Point(1.2, 3.3), new Point(6.2, -4.5));
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/19-void-02.hack | // @generated by hh_manual from manual/hack/11-built-in-types/19-void.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
class Stack<T> {
// ...
public function push(T $value): void { /* ... */ }
// ...
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/25-tuples-01.hack | // @generated by hh_manual from manual/hack/11-built-in-types/25-tuples.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
async function example_snippet_wrapper(): Awaitable<void> {
$t = tuple(10, true, 2.3);
echo "\$t[2] = >" . $t[2] . "<"; // outputs "$t[2] = >2.3<"
$t[0] = 99; // change 10 to 99
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/25-tuples-02.hack | // @generated by hh_manual from manual/hack/11-built-in-types/25-tuples.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
newtype Point = (float, float);
function create_point(float $x, float $y): Point {
return tuple($x, $y);
}
function distance(Point $p1, Point $p2): float {
$dx = $p1[0] - $p2[0];
$dy = $p1[1] - $p2[1];
return sqrt($dx * $dx + $dy * $dy);
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/28-shape-01.hack | // @generated by hh_manual from manual/hack/11-built-in-types/28-shape.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
async function example_snippet_wrapper(): Awaitable<void> {
$my_point = shape('x' => -3, 'y' => 6, 'visible' => true);
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/28-shape-02.hack | // @generated by hh_manual from manual/hack/11-built-in-types/28-shape.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
async function example_snippet_wrapper(): Awaitable<void> {
$server = shape('name' => 'db-01', 'age' => 365);
$empty = shape();
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/28-shape-03.hack | // @generated by hh_manual from manual/hack/11-built-in-types/28-shape.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
async function example_snippet_wrapper(): Awaitable<void> {
$s1 = shape('name' => 'db-01', 'age' => 365);
$s2 = $s1;
$s2['age'] = 42;
// $s1['age'] is still 365.
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/28-shape-04.hack | // @generated by hh_manual from manual/hack/11-built-in-types/28-shape.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
async function example_snippet_wrapper(): Awaitable<void> {
// $s has type shape().
$s = shape();
// $s now has type shape('name' => string).
$s['name'] = 'db-01';
// $s now has type shape('name' => string, 'age' => int).
$s['age'] = 365;
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/28-shape-05.hack | // @generated by hh_manual from manual/hack/11-built-in-types/28-shape.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
async function example_snippet_wrapper(): Awaitable<void> {
$s1 = shape('name' => 'db-01', 'age' => 365);
$s2 = shape('age' => 365, 'name' => 'db-01');
$s1 === $s2; // false
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/28-shape-06.hack | // @generated by hh_manual from manual/hack/11-built-in-types/28-shape.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function takes_server(shape('name' => string, 'age' => int) $s): void {
// ...
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/28-shape-07.hack | // @generated by hh_manual from manual/hack/11-built-in-types/28-shape.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
type Server = shape('name' => string, 'age' => int);
// Equivalent to the previous takes_server function.
function takes_server(Server $s): void {
// ...
return;
} |
hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/28-shape-08.hack_error | // @generated by hh_manual from manual/hack/11-built-in-types/28-shape.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function takes_server(Server $s): void {
return;
}
function test(): void {
$args = shape('name' => 'hello', 'age' => 10);
takes_server($args); // no error
$args = shape('name' => null, 'age' => 10);
takes_server($args); // type error: field type mismatch
$args = shape('name' => 'hello', 'age' => 10, 'error' => true);
takes_server($args); // type error: extra field
} |
|
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/28-shape-09.hack | // @generated by hh_manual from manual/hack/11-built-in-types/28-shape.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
async function example_snippet_wrapper(): Awaitable<void> {
// $s has type shape('name' => string, 'age' => int).
$s = shape('name' => 'db-01', 'age' => 365);
// $s now has type shape('name' => string, 'age' => string).
$s['age'] = '1 year';
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/28-shape-10.hack | // @generated by hh_manual from manual/hack/11-built-in-types/28-shape.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
type Server = shape('name' => string, 'age' => int);
type Pet = shape('name' => string, 'age' => int);
function takes_server(Server $_): void {}
function takes_pet(Pet $p): void {
// No error here.
takes_server($p);
} |
hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/28-shape-11.hack_error | // @generated by hh_manual from manual/hack/11-built-in-types/28-shape.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function takes_named(shape('name' => string) $_): void {}
function demo(): void {
takes_named(shape('name' => 'db-01', 'age' => 365)); // type error
} |
|
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/28-shape-12.hack | // @generated by hh_manual from manual/hack/11-built-in-types/28-shape.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function takes_named(shape('name' => string, ...) $_): void {}
// OK.
function demo(): void {
takes_named(shape('name' => 'db-01', 'age' => 365));
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/28-shape-13.hack | // @generated by hh_manual from manual/hack/11-built-in-types/28-shape.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function takes_named(shape('name' => string, ...) $n): void {
// The value in the shape, or null if field is absent.
$nullable_age = Shapes::idx($n, 'age');
// The value in the shape, or 0 if field is absent.
$age_with_default = Shapes::idx($n, 'age', 0);
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/28-shape-14.hack | // @generated by hh_manual from manual/hack/11-built-in-types/28-shape.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function takes_server(shape('name' => string, ?'age' => int) $s): void {
$age = Shapes::idx($s, 'age', 0);
}
function example_usage(): void {
takes_server(shape('name' => 'db-01', 'age' => 365));
takes_server(shape('name' => 'db-02'));
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/28-shape-15.hack | // @generated by hh_manual from manual/hack/11-built-in-types/28-shape.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function takes_server2(shape('name' => string, 'age' => ?int) $s): void {
$age = $s['age'] ?? 0;
}
function takes_server3(shape('name' => string, ...) $s): void {
$age = Shapes::idx($s, 'age', 0) as int;
} |
hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/28-shape-16.hack_error | // @generated by hh_manual from manual/hack/11-built-in-types/28-shape.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
// This produces a typehint violation at runtime.
function returns_int_instead(): shape('x' => int) {
return 1;
}
// No runtime error.
function returns_wrong_shape(): shape('x' => int) {
return shape('y' => 1);
} |
|
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/31-arraykey-01.hack | // @generated by hh_manual from manual/hack/11-built-in-types/31-arraykey.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function process_key(arraykey $p): void {
if ($p is int) {
// we have an int
} else {
// we have a string
}
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/34-enum-01.hack | // @generated by hh_manual from manual/hack/11-built-in-types/34-enum.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
enum Colors: int {
Red = 3;
Green = 5;
Blue = 10;
Default = 3; // duplicate value is okay
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/34-enum-02.hack | // @generated by hh_manual from manual/hack/11-built-in-types/34-enum.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
enum Permission: string {
Read = 'R';
Write = 'W';
Execute = 'E';
Delete = 'D';
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/34-enum-03.hack | // @generated by hh_manual from manual/hack/11-built-in-types/34-enum.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
enum BitFlags: int as int {
F1 = 1; // value 1
F2 = BitFlags::F1 << 1; // value 2
F3 = BitFlags::F2 << 1; // value 4
F4 = 4 + 3; // value 7
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/34-enum-04.hack | // @generated by hh_manual from manual/hack/11-built-in-types/34-enum.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
enum Position: int {
Top = 0;
Bottom = 1;
Left = 2;
Right = 3;
Center = 4;
}
function writeText(string $text, Position $pos): void {
switch ($pos) {
case Position::Top:
// ...
break;
case Position::Center:
// ...
break;
case Position::Right:
// ...
break;
case Position::Left:
// ...
break;
case Position::Bottom:
// ...
break;
}
}
<<__EntryPoint>>
function main(): void {
writeText("Hello", Position::Bottom);
writeText("Today", Position::Left);
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/34-enum-05.hack | // @generated by hh_manual from manual/hack/11-built-in-types/34-enum.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
enum Position: int {
Top = 0;
Bottom = 1;
Left = 2;
Right = 3;
Center = 4;
}
<<__EntryPoint>>
function main(): void {
$names = Position::getNames();
echo " Position::getNames() ---\n";
foreach ($names as $key => $value) {
echo "\tkey >$key< has value >$value<\n";
}
$values = Position::getValues();
echo "Position::getValues() ---\n";
foreach ($values as $key => $value) {
echo "\tkey >$key< has value >$value<\n";
}
Dict\flip(Position::getValues()); // safe flip of values as keys
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/34-enum-06.hack | // @generated by hh_manual from manual/hack/11-built-in-types/34-enum.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
enum Bits: int {
B1 = 2;
B2 = 4;
B3 = 8;
}
<<__EntryPoint>>
function main(): void {
Bits::assert(2); // 2
Bits::assert(16); // UnexpectedValueException
Bits::coerce(2); // 2
Bits::coerce(2.0); // null
Bits::coerce(16); // null
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/34-enum-07.hack | // @generated by hh_manual from manual/hack/11-built-in-types/34-enum.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
enum Bits: int {
B1 = 2;
B2 = 4;
B3 = 8;
}
<<__EntryPoint>>
function main(): void {
$all_values = vec[2, 4, 8];
$some_values = vec[2, 4, 16];
$no_values = vec[32, 64, 128];
Bits::assertAll($all_values); // vec[2, 4, 8]
Bits::assertAll($some_values); // throws on 16, UnexpectedValueException
Bits::assertAll($no_values); // throws on 32, UnexpectedValueException
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/34-enum-08.hack | // @generated by hh_manual from manual/hack/11-built-in-types/34-enum.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
enum Bits: int {
B1 = 2;
B2 = 4;
B3 = 8;
}
<<__EntryPoint>>
function main(): void {
\var_dump(Bits::isValid(2));
\var_dump(Bits::isValid(2.0));
\var_dump(Bits::isValid("2.0"));
\var_dump(Bits::isValid(8));
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/34-enum-09.hack | // @generated by hh_manual from manual/hack/11-built-in-types/34-enum.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
enum MyEnum: int {
FOO = 1;
}
<<__EntryPoint>>
function main(): void {
1 is MyEnum; // true
1 as MyEnum; // 1
42 is MyEnum; // false
42 as MyEnum; // TypeAssertionException
'foo' is MyEnum; // false
'foo' as MyEnum; // TypeAssertionException
'1' is MyEnum; // CAUTION - true
'1' as MyEnum; // CAUTION - '1'
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/34-enum-10.hack | // @generated by hh_manual from manual/hack/11-built-in-types/34-enum.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
enum E1: int as int {
A = 0;
}
enum E2: int as int {
B = 1;
}
enum F: int {
// same-line alternative: use E1, E2;
use E1;
use E2;
C = 2;
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/35-enum-class-01.hack | // @generated by hh_manual from manual/hack/11-built-in-types/35-enum-class.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
// Enum class where we allow any type
enum class Random: mixed {
int X = 42;
string S = 'foo';
}
// Enum class that mimics a normal enum (only allowing ints)
enum class Ints: int {
int A = 0;
int B = 10;
} |
hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/35-enum-class-02.hack_error | // @generated by hh_manual from manual/hack/11-built-in-types/35-enum-class.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
enum class Foo: string {
string BAR = 'BAZ';
}
function do_stuff(Foo $value): void {
var_dump($value);
}
function main(): void {
do_stuff(Foo::BAR); // expected Foo but got string
} |
|
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/35-enum-class-03.hack | // @generated by hh_manual from manual/hack/11-built-in-types/35-enum-class.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
enum class Foo: string {
string BAR = 'BAZ';
}
function do_stuff(HH\MemberOf<Foo, string> $value): void {
var_dump($value);
}
function main(): void {
do_stuff(Foo::BAR); // ok
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/35-enum-class-04.hack | // @generated by hh_manual from manual/hack/11-built-in-types/35-enum-class.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
enum E: int {
A = 42;
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/35-enum-class-05.hack | // @generated by hh_manual from manual/hack/11-built-in-types/35-enum-class.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
enum class EC: int {
int A = 42;
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/35-enum-class-06.hack | // @generated by hh_manual from manual/hack/11-built-in-types/35-enum-class.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
interface IGet<+T> {
public function get(): T;
}
class Box<T> implements IGet<T> {
public function __construct(private T $data)[] {}
public function get(): T { return $this->data; }
public function set(T $data): void { $this->data = $data; }
}
abstract enum class E : IGet<mixed> {
abstract const type T;
abstract Box<this::T> A;
Box<int> B = new Box(42);
}
enum class F : IGet<mixed> extends E {
const type T = string;
Box<this::T> A = new Box('zuck');
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/35-enum-class-dep_dict.hack | // @generated by hh_manual from manual/hack/11-built-in-types/35-enum-class.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function expect_string(string $str): void {
echo 'expect_string called with: '.$str."\n";
}
interface IKey {
public function name(): string;
}
abstract class Key<T> implements IKey {
public function __construct(private string $name)[] {}
public function name(): string {
return $this->name;
}
public abstract function coerceTo(mixed $data): T;
}
class IntKey extends Key<int> {
public function coerceTo(mixed $data): int {
return $data as int;
}
}
class StringKey extends Key<string> {
public function coerceTo(mixed $data): string {
// random logic can be implemented here
$s = $data as string;
// let's make everything in caps
return Str\capitalize($s);
}
}
enum class EKeys: IKey {
// here are a default key, but this could be left empty
Key<string> NAME = new StringKey('NAME');
}
abstract class DictBase {
// type of the keys, left abstract for now
abstract const type TKeys as EKeys;
// actual data storage
private dict<string, mixed> $raw_data = dict[];
// generic code written once which enforces type safety
public function get<T>(\HH\MemberOf<this::TKeys, Key<T>> $key): ?T {
$name = $key->name();
$raw_data = idx($this->raw_data, $name);
// key might not be set
if ($raw_data is nonnull) {
$data = $key->coerceTo($raw_data);
return $data;
}
return null;
}
public function set<T>(\HH\MemberOf<this::TKeys, Key<T>> $key, T $data): void {
$name = $key->name();
$this->raw_data[$name] = $data;
}
}
class Foo { /* user code in here */ }
class MyKeyType extends Key<Foo> {
public function coerceTo(mixed $data): Foo {
// user code validation
return $data as Foo;
}
}
enum class MyKeys: IKey extends EKeys {
Key<int> AGE = new IntKey('AGE');
MyKeyType BLI = new MyKeyType('BLI');
}
class MyDict extends DictBase {
const type TKeys = MyKeys;
}
<<__EntryPoint>>
function main(): void {
$d = new MyDict();
$d->set(MyKeys::NAME, 'tony');
$d->set(MyKeys::BLI, new Foo());
// $d->set(MyKeys::AGE, new Foo()); // type error
expect_string($d->get(MyKeys::NAME) as nonnull);
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/35-enum-class-extend.hack | // @generated by hh_manual from manual/hack/11-built-in-types/35-enum-class.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
interface IBox {}
class Box<T> implements IBox {
public function __construct(public T $data)[] {}
}
enum class Boxes: IBox {
Box<int> Age = new Box(42);
Box<string> Color = new Box('red');
Box<int> Year = new Box(2021);
}
function get<T>(\HH\MemberOf<Boxes, Box<T>> $box): T {
return $box->data;
}
function test0(): void {
get(Boxes::Age); // ok, of type int, returns 42
get(Boxes::Color); // ok, of type string, returns 'red'
get(Boxes::Year); // ok, of type int, returns 2021
}
enum class EBase: IBox {
Box<int> Age = new Box(42);
}
enum class EExtend: IBox extends EBase {
Box<string> Color = new Box('red');
}
enum class E: IBox {
Box<int> Age = new Box(42);
}
enum class F: IBox {
Box<string> Name = new Box('foo');
}
enum class X: IBox extends E, F { } // ok, no ambiguity
enum class E0: IBox extends E {
Box<int> Color = new Box(0);
}
enum class E1: IBox extends E {
Box<string> Color = new Box('red');
}
// enum class Y: IBox extends E0, E1 { }
// type error, Y::Color is declared twice, in E0 and in E1
// only he name is use for ambiguity
enum class DiamondBase: IBox {
Box<int> Age = new Box(42);
}
enum class D1: IBox extends DiamondBase {
Box<string> Name1 = new Box('foo');
}
enum class D2: IBox extends DiamondBase {
Box<string> Name2 = new Box('bar');
}
enum class D3: IBox extends D1, D2 {}
<<__EntryPoint>>
function main(): void {
echo D3::Age->data;
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/35-enum-class-hasname.hack | // @generated by hh_manual from manual/hack/11-built-in-types/35-enum-class.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
// Some class definitions to make a more involved example
interface IHasName {
public function name(): string;
}
class HasName implements IHasName {
public function __construct(private string $name)[] {}
public function name(): string {
return $this->name;
}
}
class ConstName implements IHasName {
public function name(): string {
return "bar";
}
}
// enum class which base type is the IHasName interface: each enum value
// can be any subtype of IHasName, here we see HasName and ConstName
enum class Names: IHasName {
HasName Hello = new HasName('hello');
HasName World = new HasName('world');
ConstName Bar = new ConstName();
}
// abstract enum class with some abstract members
abstract enum class AbstractNames: IHasName {
abstract HasName Foo;
HasName Bar = new HasName('bar');
}
enum class ConcreteNames: IHasName extends AbstractNames {
HasName Foo = new HasName('foo'); // one must provide all the abstract members
// Bar is inherited from AbstractNames
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/36-enum-class-label-01.hack | // @generated by hh_manual from manual/hack/11-built-in-types/36-enum-class-label.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
enum E: int {
A = 42;
B = 42;
}
function f(E $value): void {
switch($value) {
case E::A: echo "A "; break;
case E::B: echo "B "; break;
}
echo $value . "\n";
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/36-enum-class-label-02.hack | // @generated by hh_manual from manual/hack/11-built-in-types/36-enum-class-label.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
newtype Label<-TEnumClass, TType> = mixed; |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/36-enum-class-label-03.hack | // @generated by hh_manual from manual/hack/11-built-in-types/36-enum-class-label.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
class Foo {}
enum class F: Foo {
Foo A = new Foo();
}
// E#A === E#B is false
// E#A === F#A is true |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/36-enum-class-label-04.hack | // @generated by hh_manual from manual/hack/11-built-in-types/36-enum-class-label.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
newtype MemberOf<-TEnumClass, +TType> as TType = TType;
newtype Label<-TEnumClass, TType> = mixed;
class A {}
class B extends A {}
enum class G: A {
A X = new A();
B Y = new B();
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/36-enum-class-label-label.hack | // @generated by hh_manual from manual/hack/11-built-in-types/36-enum-class-label.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
// We are using int here for readability but it works for any type
enum class E: int {
int A = 42;
int B = 42;
}
function full_print(\HH\EnumClass\Label<E, int> $label): void {
echo E::nameOf($label) . " ";
echo E::valueOf($label) . "\n";
}
function partial_print(\HH\MemberOf<E, int> $value): void {
echo $value . "\n";
}
function test_eq(\HH\EnumClass\Label<E, int> $label): void {
if ($label === E#A) { echo "label is A\n"; }
switch ($label) {
case E#A: break;
case E#B: break;
}
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/49-this-01.hack | // @generated by hh_manual from manual/hack/11-built-in-types/49-this.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
interface I1 {
abstract const type T1 as arraykey;
public function get_ID(): this::T1;
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/55-classname-employee.hack | // @generated by hh_manual from manual/hack/11-built-in-types/55-classname.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
<<__ConsistentConstruct>>
class Employee {
// ...
}
function f(classname<Employee> $clsname): void {
$w = new $clsname(); // create an object whose type is passed in
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/56-darray-varray-runtime-options-01.hack | // @generated by hh_manual from manual/hack/11-built-in-types/56-darray-varray-runtime-options.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function get_all_runtime_options(
): dict<string, shape(
'global_value' => string,
'local_value' => string,
'access' => string,
)> {
return \ini_get_all()
|> Dict\filter_keys($$, $name ==> Str\contains($name, 'hack_arr'));
}
<<__EntryPoint>>
async function main_async(): Awaitable<void> {
foreach (get_all_runtime_options() as $name => $values) {
echo Str\format(
"%s> global_value(%s), local_value(%s), access(%s)\n",
Str\pad_right($name, 60, '-'),
$values['global_value'],
$values['local_value'],
$values['access'],
);
}
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/56-darray-varray-runtime-options-02.hack | // @generated by hh_manual from manual/hack/11-built-in-types/56-darray-varray-runtime-options.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
async function example_snippet_wrapper(): Awaitable<void> {
$_ = dict[] is shape();
$_ = vec[42] is /*tuple*/(int);
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/61-null-01.hack | // @generated by hh_manual from manual/hack/11-built-in-types/61-null.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function number_or_default(?int $x): int {
if ($x is null) {
return 42;
} else {
return $x;
}
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/61-null-traversefrom.hack | // @generated by hh_manual from manual/hack/11-built-in-types/61-null.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
// A toy interface that allows you to iterate over something,
// setting a start point.
interface TraverseFrom<Tv, Ti> {
public function startAt(Ti $_): Traversable<Tv>;
}
class TraverseIntsFromStart implements TraverseFrom<int, null> {
public function __construct(private vec<int> $items) {}
public function startAt(null $_): Traversable<int> {
return $this->items;
}
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/71-dynamic-01.hack | // @generated by hh_manual from manual/hack/11-built-in-types/71-dynamic.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function f(dynamic $x) : void {
$n = $x + 5; // $n is a num
$s = $x . "hello!"; // $s is a string
$y = $x->anyMethod(); // $y is dynamic
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/71-dynamic-02.hack | // @generated by hh_manual from manual/hack/11-built-in-types/71-dynamic.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function f(dynamic $d): void {}
function g(arraykey $a): void {}
function caller(int $i): void {
f($i); // int ~> dynamic
g($i); // int ~> arraykey by subtyping
} |
hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/71-dynamic-03.hack_error | // @generated by hh_manual from manual/hack/11-built-in-types/71-dynamic.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function enforced(int $i): void {}
function notEnforced(shape('a' => int) $s): void {}
function caller(dynamic $d): void {
enforced($d); // dynamic ~> int, runtime will throw if $d is not an int
notEnforced($d); // Hack error, dynamic ~/> shape('a' => int), runtime will not throw if $d is not a shape
}
```.hhconfig
coercion_from_dynamic = true |
|
hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/71-dynamic-04.hack_error | // @generated by hh_manual from manual/hack/11-built-in-types/71-dynamic.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function expect_int(int $i): void {}
function expect_string(string $s): void {}
function choose(bool $b, dynamic $d, int $i): void {
if ($b) {
$x = $d;
} else {
$x = $i;
}
expect_int($x); // (dynamic | int) ~> int
// dynamic ~> int because int is enforced
// int ~> int because int <: int
expect_string($x); // Hack error, (dynamic | int) ~/> string because int ~/> string
}
```.hhconfig
coercion_from_dynamic = true
coercion_from_union = true
complex_coercion = true |
|
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/73-noreturn-01.hack | // @generated by hh_manual from manual/hack/11-built-in-types/73-noreturn.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function something_went_wrong(): noreturn {
throw new Exception('something went wrong');
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/73-noreturn-02.hack | // @generated by hh_manual from manual/hack/11-built-in-types/73-noreturn.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
<<__EntryPoint>>
async function main_async(): Awaitable<void> {
$nullable_int = '_' ? 0 : null;
if (!($nullable_int is nonnull)) {
invariant_violation('$nullable_int must not be null');
}
// If we didn't fall into the if above, $nullable_int must be an int.
takes_int($nullable_int);
}
function takes_int(int $int): void {
echo $int;
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/73-noreturn-03.hack | // @generated by hh_manual from manual/hack/11-built-in-types/73-noreturn.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function i_am_a_noreturn_function(): noreturn {
throw new Exception('stop right here');
}
function i_return_nothing(): nothing {
i_am_a_noreturn_function();
}
const ?int NULLABLE_INT = 0;
async function main_async(): Awaitable<void> {
example_noreturn();
example_nothing();
}
function example_noreturn(): int {
$nullable_int = NULLABLE_INT;
if ($nullable_int is null) {
i_am_a_noreturn_function();
}
return $nullable_int;
}
function example_nothing(): int {
$nullable_int = NULLABLE_INT;
if ($nullable_int is null) {
return i_return_nothing();
}
return $nullable_int;
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/74-nothing-01.hack | // @generated by hh_manual from manual/hack/11-built-in-types/74-nothing.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function throw_as_an_expression(\Throwable $t): nothing {
throw $t;
}
function returns_an_int(?int $nullable_int): int {
// You can not use a `throw` statement in an expression bodied lambda.
// You need to add curly braces to allow a `throw` statement.
$throwing_lambda = () ==> {
throw new \Exception();
};
$throwing_expr_lambda = () ==> throw_as_an_expression(new \Exception());
// You can't write a statement on the RHS of an operator, because it operates on expressions.
// The type of the `??` operator is `(nothing | int)`, which simplifies to `int`,
// so this return statement is valid.
return $nullable_int ?? throw_as_an_expression(new \Exception());
}
<<__EntryPoint>>
async function main_async(): Awaitable<void> {
echo returns_an_int(1);
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/74-nothing-02.hack | // @generated by hh_manual from manual/hack/11-built-in-types/74-nothing.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function takes_vec_of_strings(vec<string> $_): void {}
function takes_vec_of_bools(vec<bool> $_): void {}
<<__EntryPoint>>
async function main_async(): Awaitable<void> {
$empty_vec = vec[];
takes_vec_of_bools($empty_vec);
takes_vec_of_strings($empty_vec);
foreach ($empty_vec as $nothing) {
$nothing->whatever();
takes_vec_of_strings($nothing);
}
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/74-nothing-03.hack | // @generated by hh_manual from manual/hack/11-built-in-types/74-nothing.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
interface DontForgetToImplementShipIt {
public function shipIt(nothing $_): mixed;
}
abstract class Software implements DontForgetToImplementShipIt {
}
class HHVM extends Software {
public function shipIt(string $version): string {
return 'Shipping HHVM version '.$version.'!';
}
}
class HSL extends Software {
private function __construct(public bool $has_new_functions) {
}
public function shipIt(bool $has_new_functions): HSL {
return new HSL($has_new_functions);
}
}
class HHAST extends Software {
public function shipIt(Container<string> $linters): void {
foreach ($linters as $linter) {
invariant(
Str\ends_with($linter, 'Linter'),
'Linter %s does not have a name that ends in "Linter"!',
$linter,
);
}
}
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/74-nothing-04.hack | // @generated by hh_manual from manual/hack/11-built-in-types/74-nothing.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
final class MyClass<-T> {
public function consume(T $value): void {}
public function someOtherMethod(): void {}
}
// We don't use the `T` from `->consume(T): void` in the function,
// so we can use `nothing` for the generic and accept any and all MyClass instances.
function some_function(MyClass<nothing> $a, MyClass<nothing> $b): void {
if ($a !== $b) {
$b->someOtherMethod();
echo "different\n";
}
}
<<__EntryPoint>>
async function main_async(): Awaitable<void> {
$my_class_int = new MyClass<int>();
$my_class_string = new MyClass<string>();
some_function($my_class_int, $my_class_string);
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/11-built-in-types/74-nothing-undefined.hack | // @generated by hh_manual from manual/hack/11-built-in-types/74-nothing.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
type undefined = nothing;
function undefined(): undefined {
throw new Exception('NOT IMPLEMENTED: `undefined` cannot be produced.');
}
interface MyInterface {
public function isAmazed(): bool;
}
function do_something(MyInterface $my_interface): bool {
return $my_interface->isAmazed();
}
<<__EntryPoint>>
async function main_async(): Awaitable<void> {
$my_interface = undefined();
// We won't ever reach this line, since `undefined()` will halt the program by throwing.
// We can't produce a MyInterface just yet, since there are no classes which implement it.
// `undefined` is a placeholder for now.
// We can continue writing our business logic and come back to this later.
if (do_something($my_interface)) {
// Write the body first, worry about the condition later.
}
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/12-generics/01-introduction-01.hack | // @generated by hh_manual from manual/hack/12-generics/01-introduction.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function swap<T>(inout T $i1, inout T $i2): void {
$temp = $i1;
$i1 = $i2;
$i2 = $temp;
}
<<__EntryPoint>>
function main(): void {
$v1 = -10;
$v2 = 123;
echo "\$v1 = ".$v1.", \$v2 = ".$v2."\n";
swap(inout $v1, inout $v2);
echo "\$v1 = ".$v1.", \$v2 = ".$v2."\n";
$v3 = "red";
$v4 = "purple";
echo "\$v3 = ".$v3.", \$v4 = ".$v4."\n";
swap(inout $v3, inout $v4);
echo "\$v3 = ".$v3.", \$v4 = ".$v4."\n";
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/12-generics/01-introduction-stack.hack | // @generated by hh_manual from manual/hack/12-generics/01-introduction.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
use namespace HH\Lib\{C, Vec};
interface StackLike<T> {
public function isEmpty(): bool;
public function push(T $element): void;
public function pop(): T;
}
class StackUnderflowException extends \Exception {}
class VecStack<T> implements StackLike<T> {
private int $stackPtr;
public function __construct(private vec<T> $elements = vec[]) {
$this->stackPtr = C\count($elements) - 1;
}
public function isEmpty(): bool {
return $this->stackPtr === -1;
}
public function push(T $element): void {
$this->stackPtr++;
if (C\count($this->elements) === $this->stackPtr) {
$this->elements[] = $element;
} else {
$this->elements[$this->stackPtr] = $element;
}
}
public function pop(): T {
if ($this->isEmpty()) {
throw new StackUnderflowException();
}
$element = $this->elements[$this->stackPtr];
$this->elements[$this->stackPtr] = $this->elements[0];
$this->stackPtr--;
return $element;
}
}
function useIntStack(StackLike<int> $stInt): void {
$stInt->push(10);
$stInt->push(20);
echo 'pop => '.$stInt->pop()."\n"; // 20
$stInt->push(30);
echo 'pop => '.$stInt->pop()."\n"; // 30
echo 'pop => '.$stInt->pop()."\n"; // 10
// $stInt->push(10.5); // rejected as not being type-safe
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/12-generics/04-type-parameters-01.hack | // @generated by hh_manual from manual/hack/12-generics/04-type-parameters.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function max_value<T>(T $p1, T $p2): T {
throw new Exception("unimplemented");
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/12-generics/07-type-constraints-01.hack | // @generated by hh_manual from manual/hack/12-generics/07-type-constraints.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function max_val<T as num>(T $p1, T $p2): T {
return $p1 > $p2 ? $p1 : $p2;
}
<<__EntryPoint>>
function main(): void {
echo "max_val(10, 20) = ".max_val(10, 20)."\n";
echo "max_val(15.6, -20.78) = ".max_val(15.6, -20.78)."\n";
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/12-generics/07-type-constraints-02.hack | // @generated by hh_manual from manual/hack/12-generics/07-type-constraints.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
class MyList<T> {
public function flatten<Tu>(): MyList<Tu> where T = MyList<Tu> {
throw new Exception('unimplemented');
}
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/12-generics/07-type-constraints-03.hack | // @generated by hh_manual from manual/hack/12-generics/07-type-constraints.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
class MyList<T> {
public function compact<Tu>(): MyList<Tu> where T = ?Tu {
throw new Exception('unimplemented');
}
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/12-generics/10-variance-01.hack | // @generated by hh_manual from manual/hack/12-generics/10-variance.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
// This class is readonly. Had we put in a setter for $this->t, we could not
// use covariance. e.g., if we had function setMe(T $x), you would get this
// cov.php:9:25,25: Illegal usage of a covariant type parameter (Typing[4120])
// cov.php:7:10,10: This is where the parameter was declared as covariant (+)
// cov.php:9:25,25: Function parameters are contravariant
class C<+T> {
public function __construct(private T $t) {}
}
class Animal {}
class Cat extends Animal {}
function f(C<Animal> $p1): void {
\var_dump($p1);
}
function g(varray<Animal> $p1): void {
\var_dump($p1);
}
<<__EntryPoint>>
function run(): void {
f(new C(new Animal()));
f(new C(new Cat())); // accepted
g(varray[new Animal(), new Animal()]);
g(varray[new Cat(), new Cat(), new Animal()]); // arrays are covariant
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/12-generics/10-variance-02.hack | // @generated by hh_manual from manual/hack/12-generics/10-variance.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
// This class is write only. Had we put in a getter for $this->t, we could not
// use contravariance. e.g., if we had function getMe(T $x): T, you would get
// con.php:10:28,28: Illegal usage of a contravariant type
// parameter (Typing[4121])
// con.php:5:10,10: This is where the parameter was declared as
// contravariant (-)
// con.php:10:28,28: Function return types are covariant
class C<-T> {
public function __construct(private T $t) {}
public function set_me(T $val): void {
$this->t = $val;
}
}
class Animal {}
class Cat extends Animal {}
<<__EntryPoint>>
function main(): void {
$animal = new Animal();
$cat = new Cat();
$c = new C($cat);
// calling set_me with Animal on an instance of C that was initialized with Cat
$c->set_me($animal);
\var_dump($c);
} |
Hack | hhvm/hphp/hack/test/extracted_from_manual/12-generics/19-type-erasure-01.hack | // @generated by hh_manual from manual/hack/12-generics/19-type-erasure.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function takes_ints(vec<int> $items): vec<int> {
return $items;
} |
hhvm/hphp/hack/test/extracted_from_manual/12-generics/19-type-erasure-02.hack_error | // @generated by hh_manual from manual/hack/12-generics/19-type-erasure.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
async function my_foo(): Awaitable<int> {
return "not an int";
} |
|
Hack | hhvm/hphp/hack/test/extracted_from_manual/13-contexts-and-capabilities/01-introduction-01.hack | // @generated by hh_manual from manual/hack/13-contexts-and-capabilities/01-introduction.md
// @codegen-command : buck run fbcode//hphp/hack/src/hh_manual:hh_manual extract fbcode/hphp/hack/manual/hack/
function no_listed_contexts()[defaults]: void {/* some fn body */} |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.