Azure99/stackoverflow-qa-top-300k · Datasets at Hugging Face

35,355,225

Edit and create HTML file using Python

I am currently working on an assignment for creating an HTML file using python. I understand how to read an HTML file into python and then edit and save it. <pre><code>table_file = open('abhi.html', 'w') table_file.write('<!DOCTYPE html><html><body>') table_file.close() </code></pre> The problem with the above piece is it's just replacing the whole HTML file and putting the string inside write(). How can I edit the file and the same time keep it's content intact. I mean, writing something like this, but inside the body tags <pre><code><link rel="icon" type="image/png" href="img/tor.png"> </code></pre> I need the link to automatically go in between the opening and closing body tags.

35,355,433

1

2

null

2016-02-12 05:08:03.733 UTC

13

2022-06-15 21:54:59.01 UTC

null

1,839,439

null

4,416,786

null

1

17

python|html|python-3.x|python-import

50,276

You probably want to <a href="http://www.crummy.com/software/BeautifulSoup/bs4/doc/" rel="noreferrer">read up on BeautifulSoup</a>: <pre><code>import bs4 # load the file with open("existing_file.html") as inf: txt = inf.read() soup = bs4.BeautifulSoup(txt) # create new link new_link = soup.new_tag("link", rel="icon", type="image/png", href="img/tor.png") # insert it into the document soup.head.append(new_link) # save the file again with open("existing_file.html", "w") as outf: outf.write(str(soup)) </code></pre> Given a file like <pre><code><html> <head> <title>Test</title> </head> <body> What's up, Doc? </body> </html> </code></pre> this produces <pre><code><html> <head> <title>Test</title> <link href="img/tor.png" rel="icon" type="image/png"/></head> <body> What's up, Doc? </body> </html> </code></pre> (note: it has munched the whitespace, but gotten the html structure correct).

28,296,517

How to customize Bootstrap 3 tab color

I want to create a customized tab using Bootstrap 3. What I have done is - <pre><code><ul class="nav nav-tabs" id="myTab"> <script type="text/javascript"> $(document).ready(function() { //1st (1-1 = 0) tab selected initialy $("#myTab li:eq(0) a").tab('show'); }); </script> <li><a data-toggle="tab" href="#sectionA">SEARCH</a></li> <li><a data-toggle="tab" href="#sectionB">ADVANCED</a></li> </ul> <div class="tab-content"> <div id="sectionA" class="tab-pane fade in active"> Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui. </div> <div id="sectionB" class="tab-pane fade"> Vestibulum nec erat eu nulla rhoncus fringilla ut non neque. Vivamus nibh urna. </div> </div> </code></pre> And I am getting a tab like this- <img src="https://i.stack.imgur.com/LKq8F.jpg" alt="2"> But I want to have is a customized colored. I am new in Bootstrap 3, so I don't know how to do it. What I want is something like this- <img src="https://i.stack.imgur.com/i6A5V.jpg" alt="1">. Can anyone help me please? Thanks in advance for helping.

28,298,334

4

2

null

2015-02-03 10:23:10.19 UTC

8

2020-03-30 17:08:11.903 UTC

2019-03-12 14:32:51.587 UTC

null

917,151

null

2,193,439

null

1

34

html|css|twitter-bootstrap

130,643

On the selector <code>.nav-tabs > li > a:hover</code> add <code>!important</code> to the <code>background-color</code>. <div class="snippet" data-lang="js" data-hide="false"> <div class="snippet-code"> <pre class="snippet-code-css lang-css prettyprint-override"><code>.nav-tabs{ background-color:#161616; } .tab-content{ background-color:#303136; color:#fff; padding:5px } .nav-tabs > li > a{ border: medium none; } .nav-tabs > li > a:hover{ background-color: #303136 !important; border: medium none; border-radius: 0; color:#fff; }</code></pre> <pre class="snippet-code-html lang-html prettyprint-override"><code><script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/js/bootstrap.min.js"></script> <link href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css" rel="stylesheet"/> <ul class="nav nav-tabs" id="myTab"> <li class="active"><a data-toggle="tab" href="#search">SEARCH</a></li> <li><a data-toggle="tab" href="#advanced">ADVANCED</a></li> </ul> <div class="tab-content"> <div id="search" class="tab-pane fade in active"> Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui. </div> <div id="advanced" class="tab-pane fade"> Vestibulum nec erat eu nulla rhoncus fringilla ut non neque. Vivamus nibh urna. </div> </div></code></pre> </div> </div>

8,508,190

How do I unit test a custom ActionFilter in ASP.Net MVC

So I'm creating a custom ActionFilter that's based mostly on this project <a href="http://www.codeproject.com/KB/aspnet/aspnet_mvc_restapi.aspx">http://www.codeproject.com/KB/aspnet/aspnet_mvc_restapi.aspx</a>. I want a custom action filter that uses the http accept headers to return either JSON or Xml. A typical controller action will look like this: <pre><code>[AcceptVerbs(HttpVerbs.Get)] [AcceptTypesAttribute(HttpContentTypes.Json, HttpContentTypes.Xml)] public ActionResult Index() { var articles = Service.GetRecentArticles(); return View(articles); } </code></pre> The custom filter overrides the OnActionExecuted and will serialize the object (in this example articles) as either JSON or Xml. My question is: how do I test this? <ol> <li>What tests do I write? I'm a TDD novice and am not 100% sure what I should be testing and what not to test. I came up with <code>AcceptsTypeFilterJson_RequestHeaderAcceptsJson_ReturnsJson()</code>, <code>AcceptsTypeFilterXml_RequestHeaderAcceptsXml_ReturnsXml()</code> and <code>AcceptsTypeFilter_AcceptsHeaderMismatch_ReturnsError406()</code>.</li> <li>How do I test an ActionFilter in MVC that is testing the Http Accept Headers?</li> </ol> Thanks.

8,508,700

2

1

null

2011-12-14 16:41:53.597 UTC

5

2021-06-25 03:33:34.817 UTC

null

68,631

null

1

31

asp.net-mvc|unit-testing|tdd|actionfilterattribute

22,580

You just need to test the filter itself. Just create an instance and call the <code>OnActionExecuted()</code> method with test data then check the result. It helps to pull the code apart as much as possible. Most of the heavy lifting is done inside the <code>CsvResult</code> class which can be tested individually. You don't need to test the filter on an actual controller. Making that work is the MVC framework's responsibility. <pre><code>public void AcceptsTypeFilterJson_RequestHeaderAcceptsJson_ReturnsJson() { var context = new ActionExecutedContext(); context.HttpContext = // mock an http context and set the accept-type. I don't know how to do this, but there are many questions about it. context.Result = new ViewResult(...); // What your controller would return var filter = new AcceptTypesAttribute(HttpContentTypes.Json); filter.OnActionExecuted(context); Assert.True(context.Result is JsonResult); } </code></pre>

1,095,131

Paste Excel data into html table

Using Javascript, how do I create an HTML table that can "accept" numeric matrix data from excel (or google spreadsheet), via "copy" in the spreadsheet and then "paste" into the table in the browser.

1,095,255

4

2

null

2009-07-07 22:07:49.217 UTC

9

2021-03-16 11:10:25.93 UTC

2016-09-29 21:07:08.923 UTC

null

4,370,109

null

134,566

null

1

27

javascript|html-table|spreadsheet

54,126

This would only work reliably on IE since Firefox (and likely others) don't allow access to the clipboard without specifically allowing it; the earlier suggestion of pasting into a textarea first might work better than this. When you copy from a spreadsheet, generally the cells are separated with a tab (chr9) and the rows with a CR (chr13). This script converts the clipboard into a 2D array and then builds a table from it. Not too elegant but it seems to work copying data out of Excel. <pre><code><html> <head> <script language="javascript"> function clip() { // get the clipboard text var clipText = window.clipboardData.getData('Text'); // split into rows clipRows = clipText.split(String.fromCharCode(13)); // split rows into columns for (i=0; i<clipRows.length; i++) { clipRows[i] = clipRows[i].split(String.fromCharCode(9)); } // write out in a table newTable = document.createElement("table") newTable.border = 1; for (i=0; i<clipRows.length - 1; i++) { newRow = newTable.insertRow(); for (j=0; j<clipRows[i].length; j++) { newCell = newRow.insertCell(); if (clipRows[i][j].length == 0) { newCell.innerText = ' '; } else { newCell.innerText = clipRows[i][j]; } } } document.body.appendChild(newTable); } </script> </head> <body> <input type="button" onclick="clip()"> </body> </html> </code></pre>

621,516

How can I set the max number of MySQL processes or threads?

<code>ps axuw| grep mysql</code> indicates only MySQL process, but if I run htop I can see 10 rows each one of them with a separate PID. So I wonder if they are threads or processes that for some reason I cannot see using ps. Would it make any sense to try to limit them to two on my development machine, where I don't need concurrent access of many clients. BTW Running on Ubuntu 8.10

621,527

4

0

null

2009-03-07 08:13:06.423 UTC

7

2014-10-09 21:13:43.853 UTC

2013-06-11 07:50:38.607 UTC

null

225,037

szabgab

11,827

null

1

28

mysql|multithreading|process

64,716

You can set the max number of threads in your my.ini like this: <pre><code>max_connections=2 </code></pre> However you might also want to set this: <pre><code>thread_cache_size=1 </code></pre> The thread cache controls how many it keeps open even when nothing is happening.

747,521

How can I list all variables that are in a given scope?

I know I can list all of the package and lexcial variables in a given scope using <a href="http://search.cpan.org/dist/PadWalker/PadWalker.pm" rel="noreferrer"><code>Padwalker</code></a>'s <code>peek_our</code> and <code>peek_my</code>, but how can I get the names and values of all of the global variables like <code>$"</code> and <code>$/</code>? <pre><code>#!/usr/bin/perl use strict; use warnings; use PadWalker qw/peek_our peek_my/; use Data::Dumper; our $foo = 1; our $bar = 2; { my $foo = 3; print Dumper in_scope_variables(); } print Dumper in_scope_variables(); sub in_scope_variables { my %in_scope = %{peek_our(1)}; my $lexical = peek_my(1); #lexicals hide package variables while (my ($var, $ref) = each %$lexical) { $in_scope{$var} = $ref; } ############################################## #FIXME: need to add globals to %in_scope here# ############################################## return \%in_scope; } </code></pre>

748,206

4

0

null

2009-04-14 13:19:20.597 UTC

11

2019-08-05 05:44:30.553 UTC

null

78,259

null

1

34

perl

16,280

You can access the symbol table, check out p. 293 of "Programming Perl" Also look at "Mastering Perl: <a href="http://www252.pair.com/comdog/mastering_perl/" rel="noreferrer">http://www252.pair.com/comdog/mastering_perl/</a> Specifically: <a href="http://www252.pair.com/comdog/mastering_perl/Chapters/08.symbol_tables.html" rel="noreferrer">http://www252.pair.com/comdog/mastering_perl/Chapters/08.symbol_tables.html</a> Those variables you are looking for will be under the main namespace A quick Google search gave me: <pre><code>{ no strict 'refs'; foreach my $entry ( keys %main:: ) { print "$entry\n"; } } </code></pre> You can also do <pre><code>*sym = $main::{"/"} </code></pre> and likewise for other values If you want to find the type of the symbol you can do (from mastering perl): <pre><code>foreach my $entry ( keys %main:: ) { print "-" x 30, "Name: $entry\n"; print "\tscalar is defined\n" if defined ${$entry}; print "\tarray is defined\n" if defined @{$entry}; print "\thash is defined\n" if defined %{$entry}; print "\tsub is defined\n" if defined &{$entry}; } </code></pre>

1,339,352

How do I set -Dfile.encoding within ant's build.xml?

I've got java source files with iso-8859-1 encoding. When I run ant, I get "warning: unmappable character for encoding UTF-8". I can avoid this if I run ant -Dfile.encoding=iso-8859-1 or add encoding="ISO-8859-1" to each javac statement. Is there a way to set the property globally within build.xml? <property name="file.encoding" value="ISO-8859-1"> does not work. I know that I can add a foo=ISO-8859-1 property and set encoding="${foo}" to each javac statement, but I'm trying to avoid that.

1,339,430

4

1

null

2009-08-27 07:09:54.717 UTC

9

2015-10-14 15:13:12.037 UTC

2009-08-27 07:27:34.51 UTC

null

21,234

null

13,365

null

1

48

java|ant|character-encoding|javac

88,621

A few options: <ol> <li>add <code>-Dfile.encoding=iso-8859-1</code> to your <code>ANT_OPTS</code> environment variable</li> <li>use <code><presetdef></code> to setup defaults for all of your <code><javac></code> invocations</li> </ol>

838,404

Implementing a HashMap in C

How to go about creating a Hashmap in C from scratch as is present in C++ STL? What parameters would be taken into consideration and how would you test the hashmap? As in, what would the benchmark test cases be which you would run before you could say that your hashmap is complete?

838,413

4

0

null

2009-05-08 05:50:11.117 UTC

32

2020-08-08 03:26:49.1 UTC

null

6,553,328

null

103,286

null

1

59

c|data-structures|hashmap

159,661

Well if you know the basics behind them, it shouldn't be too hard. Generally you create an array called "buckets" that contain the key and value, with an optional pointer to create a linked list. When you access the hash table with a key, you process the key with a custom hash function which will return an integer. You then take the modulus of the result and that is the location of your array index or "bucket". Then you check the unhashed key with the stored key, and if it matches, then you found the right place. Otherwise, you've had a "collision" and must crawl through the linked list and compare keys until you match. (note some implementations use a binary tree instead of linked list for collisions). Check out this fast hash table implementation: <a href="https://attractivechaos.wordpress.com/2009/09/29/khash-h/" rel="noreferrer">https://attractivechaos.wordpress.com/2009/09/29/khash-h/</a>

683,211

Method Syntax in Objective-C

Can someone explain this method declaration syntax for me? In this function, the number of rows of a UIPickerView (slot machine UI on the iPhone) is being returned. From my understanding, the Method is called '<code>pickerView</code>', and returns an NSInteger. It passes in a pointer to the UIPickerview called '<code>pickerView</code>' ... first, why is the method called the same name as the parameter? Next there is NSInteger parameter called component that tells us which component we are counting the rows for. The logic to decide which is in the body of the method. What is '<code>numberOfRowsInComponent</code>? It seems to describe the value we are returning, but it is in the middle of the parameters. <pre><code>- (NSInteger) pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component { if (component == kStateComponent) return [self.states count]; return[self.zips count]; } </code></pre>

683,290

4

0

null

2009-03-25 20:01:24.057 UTC

90

2019-12-05 13:42:35.78 UTC

epatel

1,033,581

null

82,780

null

1

180

objective-c|syntax|methods

98,730

Objective-C methods are designed to be self documenting, and they borrow from the rich tradition of Smalltalk. I'll try to explain what you have here, <code>-(NSInteger) pickerView:(UIPickerView*)pickerView numberOfRowsInComponent:(NSInteger)component</code>. <ul> <li><code>- (NSInteger)</code> This first portion indicates that this is an Objective C instance method that returns a NSInteger object. the <code>-</code> (dash) indicates that this is an instance method, where a <code>+</code> would indicate that this is a class method. The first value in parenthesis is the return type of the method. </li> <li><code>pickerView:</code> This portion is a part of the message name. The full message name in this case is <code>pickerView:numberOfRowsInComponent:</code>. The Objective-C runtime takes this method information and sends it to the indicated receiver. In pure C, this would look like <code>NSInteger pickerView(UIPickerView* pickerView, NSInteger component)</code>. However, since this is Objective-C, additional information is packed into the message name. </li> <li><code>(UIPickerView*)pickerView</code> This portion is part of the input. The input here is of type <code>UIPickerView*</code> and has a local variable name of pickerView. </li> <li><code>numberOfRowsInComponent:</code> This portion is the second part of the message name. As you can see here, message names are split up to help indicate what information you are passing to the receiver. Thus, if I were to message an object myObject with the variables foo and bar, I would type: <code>[myObject pickerView:foo numberOfRowsInComponent:bar];</code> as opposed to C++ style: <code>myObject.pickerView(foo, bar);</code>.</li> <li><code>(NSInteger)component</code> This is the last portion of the input. the input here is of type <code>NSInteger</code> and has a local variable name of component.</li> </ul>

19,732,972

How to make the navigation bar transparent

How can I make the navigation bar transparent on Android 4.4.X and above? I have searched in the documentation, but found nothing about this.

19,733,218

2

0

null

2013-11-01 18:25:09.13 UTC

11

2015-09-02 12:59:03.827 UTC

2014-08-20 13:34:34.6 UTC

null

2,182,545

null

2,182,545

null

1

31

android|android-4.4-kitkat

45,065

I have taken this from the change log for <a href="http://developer.android.com/about/versions/android-4.4.html" rel="noreferrer">Android KitKat (4.4)</a>: <blockquote> Translucent system bars You can now make the system bars partially translucent with new themes, <a href="http://developer.android.com/reference/android/R.style.html#Theme_Holo_NoActionBar_TranslucentDecor" rel="noreferrer"><code>Theme.Holo.NoActionBar.TranslucentDecor</code></a> and <a href="http://developer.android.com/reference/android/R.style.html#Theme_Holo_Light_NoActionBar_TranslucentDecor" rel="noreferrer"><code>Theme.Holo.Light.NoActionBar.TranslucentDecor</code></a>. By enabling translucent system bars, your layout will fill the area behind the system bars, so you must also enable <a href="http://developer.android.com/reference/android/R.attr.html#fitsSystemWindows" rel="noreferrer"><code>fitsSystemWindows</code></a> for the portion of your layout that should not be covered by the system bars. If you're creating a custom theme, set one of these themes as the parent theme or include the <a href="http://developer.android.com/reference/android/R.attr.html#windowTranslucentNavigation" rel="noreferrer"><code>windowTranslucentNavigation</code></a> and <a href="http://developer.android.com/reference/android/R.attr.html#windowTranslucentStatus" rel="noreferrer"><code>windowTranslucentStatus</code></a> style properties in your theme. </blockquote> Hope this helps get you started.

19,825,283

Redirect to a page/URL after alert button is pressed

i have referred to this two questions <a href="https://stackoverflow.com/questions/7157029/call-php-page-under-javascript-function">call php page under Javascript function</a> and <a href="https://stackoverflow.com/questions/9394131/go-to-url-after-ok-button-in-alert-is-pressed">Go to URL after OK button in alert is pressed</a>. i want to redirect to my index.php after an alert box is called. my alert box is in my else statement. below is my code: processor.php <pre><code> if (!empty($name) && !empty($email) && !empty($office_id) && !empty($title) && !empty($var_title) && !empty($var_story) && !empty($var_task) && !empty($var_power) && !empty($var_solve) && !empty($var_result)) { (some imagecreatefromjpeg code here) else{ echo '<script type="text/javascript">'; echo 'alert("review your answer")'; echo 'window.location= "index.php"'; echo '</script>'; } </code></pre> it's not displ ying anything(no alert box and not redirecting). when i delet this part <code>echo 'window.location= "index.php"';</code> it's showing the alert. but still not redirecting to index.php. hope you can help me with this. please dont mark as duplicate as i have made tose posts as reference. thank you so much for your help.

19,825,307

6

0

null

2013-11-06 23:47:29.28 UTC

5

2022-03-04 11:06:39.55 UTC

2017-05-23 12:03:09.083 UTC

null

-1

null

2,922,814

null

1

12

javascript|php

212,753

You're missing semi-colons after your javascript lines. Also, <code>window.location</code> should have <code>.href</code> or <code>.replace</code> etc to redirect - <a href="https://stackoverflow.com/questions/503093/how-can-i-make-a-redirect-page-in-jquery-javascript">See this post for more information.</a> <pre><code>echo '<script type="text/javascript">'; echo 'alert("review your answer");'; echo 'window.location.href = "index.php";'; echo '</script>'; </code></pre> For clarity, try leaving PHP tags for this: <pre><code>?> <script type="text/javascript"> alert("review your answer"); window.location.href = "index.php"; </script> <?php </code></pre> NOTE: semi colons on seperate lines are optional, but encouraged - however as in the comments below, PHP won't break lines in the first example here but will in the second, so semi-colons are required in the first example.

2,955,280

MXMLC and 64bit JRE

Are there any workarounds to get the Flex compiler to work with a 64bit JRE? If I use an MXMLC task in an Ant buildfile in Eclipse it works fine but if I try to use MXMLC from the command line (or try the Run... command from FDT in Eclipse) it fails, telling me ... "Error loading: C:\Program Files\Java\jrrt-1.6.0\jre\bin\jrockit\jvm.dll" (this is with a 64bit JRockit runtime but that shouldn't matter).

3,064,938

2

0

null

2010-06-02 05:47:59.837 UTC

12

2016-05-10 01:33:37.26 UTC

null

356,105

null

1

28

flash|64-bit|java|mxmlc

15,778

There is currently no support for using the Flex compiler with the 64 bit JRE. Instead, have the compiler use a 32 bit JRE. To do so, you'll need to edit the jvm.config file located in FLEX_HOME\bin. Within jvm.config, set <code>java.home</code> to the location of a 32bit JRE. If you don't already have a 32bit JRE, download it. Example: <pre><code>java.home=C:/Program Files (x86)/Java/jre6 </code></pre> If you like this answer, please click the up arrow to the left.

48,860,158

changing ggplot2::facet_wrap title from the default

Is there any possible way to change the labels for the facet_wrap variable, as displayed below. So, for example, instead of <code>cyl: 4</code>, <code>cyl: 6</code>, <code>cyl: 8</code>, I want it to read <code>condition: 4</code>, <code>condition: 6</code>, <code>condition: 8</code>. Of course, I can just do this by renaming the variable, but that's not what I want. This is a much simpler version of a custom function where I can't just rename a variable anyway I like. Another way to put this is, do I have any freedom to label the <code>facet_wrap</code> anyway I like? Kinda like how <code>x</code> aesthetic variable in <code>ggplot2</code> can have some name (e.g. <code>cyl</code>) in the dataframe (<code>mtcars</code>), but I can still replace it with my own name using <code>labs(x = "cylinder")</code>). I want to have something similar for <code>facet_wrap</code>. <pre class="lang-r prettyprint-override"><code>library(dplyr) library(datasets) library(ggplot2) data(mtcars) # creating a dataframe df <- dplyr::group_by(mtcars, .dots = c('cyl', 'am')) %>% dplyr::summarize(counts = n()) %>% dplyr::mutate(perc = (counts / sum(counts)) * 100) %>% dplyr::arrange(desc(perc)) # preparing the plot ggplot2::ggplot(df, aes('', counts)) + geom_col( position = 'fill', color = 'black', width = 1, aes(fill = factor(am)) ) + facet_wrap(~cyl, labeller = "label_both") + # faceting by `cyl` variable geom_label( aes(label = paste0(round(perc), "%"), group = factor(am)), position = position_fill(vjust = 0.5), color = 'black', size = 5, show.legend = FALSE ) + coord_polar(theta = "y") </code></pre> <img src="https://i.imgur.com/bsVLUYB.png" alt=""> Created on 2018-02-19 by the <a href="http://reprex.tidyverse.org" rel="noreferrer">reprex package</a> (v0.2.0).

48,860,657

2

0

null

2018-02-19 05:45:54.24 UTC

9

2018-02-19 17:26:14.94 UTC

null

7,973,626

null

1

9

r|ggplot2|data-visualization

17,604

To change the facet labels you can provide a named vector of labels to the <code>labeller</code> argument in <code>facet_wrap</code>: <pre><code>labeller = labeller(cyl = c("4" = "condition: 4", "6" = "condition: 6", "8" = "condition: 8")) </code></pre> Here is the full plot code: <pre><code>ggplot2::ggplot(df, aes('', counts)) + geom_col( position = 'fill', color = 'black', width = 1, aes(fill = factor(am)) ) + facet_wrap(~cyl, labeller = labeller(cyl = c("4" = "condition: 4", "6" = "condition: 6", "8" = "condition: 8") )) geom_label( aes(label = paste0(round(perc), "%"), group = factor(am)), position = position_fill(vjust = 0.5), color = 'black', size = 5, show.legend = FALSE ) + coord_polar(theta = "y") </code></pre> <a href="https://i.stack.imgur.com/ASIJt.png" rel="noreferrer"><img src="https://i.stack.imgur.com/ASIJt.png" alt="enter image description here"></a> EDIT based on the comments where a function to return labels is requested: perhaps something like this: <pre><code>label_facet <- function(original_var, custom_name){ lev <- levels(as.factor(original_var)) lab <- paste0(custom_name, ": ", lev) names(lab) <- lev return(lab) } ggplot2::ggplot(df, aes('', counts)) + geom_col( position = 'fill', color = 'black', width = 1, aes(fill = factor(am)) ) + facet_wrap(~cyl, labeller = labeller(cyl = label_facet(df$cyl, "grouping"))) + geom_label( aes(label = paste0(round(perc), "%"), group = factor(am)), position = position_fill(vjust = 0.5), color = 'black', size = 5, show.legend = FALSE ) + coord_polar(theta = "y") </code></pre> <a href="https://i.stack.imgur.com/YyDiF.png" rel="noreferrer"><img src="https://i.stack.imgur.com/YyDiF.png" alt="enter image description here"></a> <pre><code>sessionInfo() R version 3.4.2 (2017-09-28) Platform: x86_64-w64-mingw32/x64 (64-bit) Running under: Windows >= 8 x64 (build 9200) Matrix products: default locale: [1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United States.1252 LC_MONETARY=English_United States.1252 [4] LC_NUMERIC=C LC_TIME=English_United States.1252 attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] bindrcpp_0.2 ggplot2_2.2.1 dplyr_0.7.4 RMOA_1.0 rJava_0.9-9 RMOAjars_1.0 loaded via a namespace (and not attached): [1] Rcpp_0.12.14 bindr_0.1 magrittr_1.5 munsell_0.4.3 colorspace_1.3-2 R6_2.2.2 rlang_0.1.4 [8] plyr_1.8.4 tools_3.4.2 grid_3.4.2 gtable_0.2.0 yaml_2.1.14 lazyeval_0.2.1 assertthat_0.2.0 [15] digest_0.6.13 tibble_1.4.1 glue_1.2.0 labeling_0.3 compiler_3.4.2 pillar_1.0.1 scales_0.5.0.9000 [22] pkgconfig_2.0.1 </code></pre>

38,089,200

What is CGLIB in Spring Framework?

What is CGLIB and how it is related to Spring? Do we have to define usage of CGLIB explicitly when using Spring Framework?

38,094,536

1

0

null

2016-06-29 02:10:22.92 UTC

9

2020-06-02 08:40:37.897 UTC

2018-01-08 13:51:36.613 UTC

null

814,702

null

1,042,646

null

1

35

spring|code-generation|cglib

21,771

Ref Spring <a href="http://docs.spring.io/spring/docs/current/spring-framework-reference/html/aop.html#aop-introduction-proxies" rel="noreferrer">docs</a>. What is CGLIB & how is it related to Spring? <blockquote> CGLIB is a code generation library. Spring uses CGLIB, to generate proxies. </blockquote> Spring AOP defaults to using standard JDK dynamic proxies for AOP proxies. This enables any interface (or set of interfaces) to be proxied. Yes, you have to tell spring to use CGLIB based proxies explicitly. Via xml: <code><aop:aspectj-autoproxy proxy-target-class="true"/></code> proxy-target-class property is set to true will cause CGLIB-based proxying to be in effect. Via Annotation: <pre><code>@Configuration @EnableAspectJAutoProxy(proxyTargetClass=true) public class AppConfig { // ... } </code></pre> There is no need to add CGLIB to your classpath. As of Spring 3.2, CGLIB is repackaged and included in the spring-core JAR. You may have look at <a href="https://stackoverflow.com/questions/15568112/using-proxy-target-class-true-with-spring-beans">this</a> too.

41,568,111

Flexbox with one fixed column width

I am trying to acheive a <code>flexbox</code> with two columns, the left that is of a fixed width and the right that scales as the page size is altered. For example: <pre><code><style> .flex_container { display: flex; width: 100%; } .flex_col_left { width: 200px; } .flex_col_right { width: 85%; } </style> <div class = "flex_container"> <div class = "flex_col_left"> ..... </div> <div class = "flex_col_right"> ..... </div> <div> </code></pre> This works to an extent but it does not feel right as I am mixing px and %. Is it incorrect to do it this way and if so what might be a better solution? EDIT Classes naming issue was a typo and now fixed.

41,568,169

2

0

null

2017-01-10 11:47:23.503 UTC

10

2017-01-10 11:57:57.6 UTC

2017-01-10 11:55:13.487 UTC

null

1,842,939

null

1,842,939

null

1

38

css|flexbox

37,646

Instead of setting width in <code>%</code> on right column you can just use <code>flex: 1</code> and it will take rest of free width in a row. <div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false"> <div class="snippet-code"> <pre class="snippet-code-css lang-css prettyprint-override"><code>.flex_container { display: flex; width: 100%; } .flex_item_left { width: 200px; background: lightgreen; } .flex_item_right { flex: 1; background: lightblue; }</code></pre> <pre class="snippet-code-html lang-html prettyprint-override"><code><div class="flex_container"> <div class="flex_item_left"> ..... </div> <div class="flex_item_right"> ..... </div> <div></code></pre> </div> </div>

23,036,062

Can't use Scanner.nextInt() and Scanner.nextLine() together

I have to get a string input and an integer input, but there order of input should be that integer comes first then user should be asked for string input <pre><code>Scanner in = new Scanner(System.in); input = in.nextLine(); k = in.nextInt(); in.close(); </code></pre> The above code works fine but if I take an integer input first like in the following code <pre><code>Scanner in = new Scanner(System.in); k = in.nextInt(); input = in.nextLine(); in.close(); </code></pre> then it throws the java.lang.ArrayIndexOutOfBoundsException. Here's the complete code of my source file: <pre><code>import java.util.Scanner; </code></pre> public class StringSwap { <pre><code>public static void main(String args[]) { String input; int k; Scanner in = new Scanner(System.in); k = in.nextInt(); input = in.nextLine(); in.close(); int noOfCh = noOfSwapCharacters(input); originalString(input, noOfCh, k); } public static int noOfSwapCharacters(String s) { char cS[] = s.toCharArray(); int i = 0, postCounter = 0; while (cS[i] != '\0') { if (cS[i] != '\0' && cS[i + 1] != '\0') { cS[cS.length - 1 - postCounter] = '\0'; postCounter++; } i++; } return postCounter; } public static void originalString(String s, int noOfCh, int k) { int counter = 1, chCounter = 0; char cArray[] = s.toCharArray(); String post = ""; String pre = ""; String finalString = ""; char temp; for (int i = 1; i <= k; i++) { chCounter = 0; counter = 1; post = ""; pre = ""; for (int j = 0; j < cArray.length; j++) { if (counter % 2 == 0 && chCounter <= noOfCh) { temp = cArray[j]; post = temp + post; cArray[j] = '\0'; chCounter++; } counter++; } for (int h = 0; h < cArray.length; h++) { if (cArray[h] != '\0') pre = pre + cArray[h]; } finalString = pre + post; for (int l = 0; l < finalString.length(); l++) { cArray[l] = finalString.charAt(l); } } System.out.println(finalString); } </code></pre> } Kindly point out what I am doing wrong here.

23,036,112

1

0

null

2014-04-12 21:01:07.2 UTC

10

2014-04-12 21:06:56.55 UTC

null

1,609,548

null

1

14

java|java.util.scanner

26,163

The problem is the <code>'\n'</code> character that follows your integer. When you call <code>nextInt</code>, the scanner reads the <code>int</code>, but it does not consume the <code>'\n'</code> character after it; <code>nextLine</code> does that. That is why you get an empty line instead of the string that you were expecting to get. Let's say your input has the following data: <pre><code>12345 hello </code></pre> Here is how the input buffer looks initially (<code>^</code> represents the position at which the <code>Scanner</code> reads the next piece of data): <pre><code>1 2 3 4 5 \n h e l l o \n ^ </code></pre> After <code>nextInt</code>, the buffer looks like this: <pre><code>1 2 3 4 5 \n h e l l o \n ^ </code></pre> The first <code>nextLine</code> consumes the <code>\n</code>, leaving your buffer like this: <pre><code>1 2 3 4 5 \n h e l l o \n ^ </code></pre> Now the <code>nextLine</code> call will produce the expected result. Therefore, to fix your program, all you need is to add another call to <code>nextLine</code> after <code>nextInt</code>, and discard its result: <pre><code>k = in.nextInt(); in.nextLine(); // Discard '\n' input = in.nextLine(); </code></pre>

47,295,871

Is there a way to use pipenv with Jupyter notebook?

Is there a way to use pipenv with Jupyter notebook? Or more specifically, with an atom nteract/hydrogen python 3 kernel?

47,296,960

4

0

null

2017-11-14 21:55:12.143 UTC

77

2022-06-19 18:33:10.963 UTC

2018-04-13 18:16:22.283 UTC

null

33,264

null

3,731,467

null

1

93

python|jupyter|pipenv

44,816

Just tried the following with success. In your project folder: <pre><code>pipenv install ipykernel pipenv shell </code></pre> This will bring up a terminal in your virtualenv like this: <pre><code>(my-virtualenv-name) bash-4.4$ </code></pre> In that shell do: <pre><code>python -m ipykernel install --user --name=my-virtualenv-name </code></pre> Launch jupyter notebook: <pre><code>jupyter notebook </code></pre> In your notebook, Kernel -> Change Kernel. Your kernel should now be an option. <a href="https://i.stack.imgur.com/htimC.png" rel="noreferrer"><img src="https://i.stack.imgur.com/htimC.png" alt="Change Kernel Screenshot"></a> Source: <a href="https://help.pythonanywhere.com/pages/IPythonNotebookVirtualenvs/" rel="noreferrer">IPythonNotebookVirtualenvs</a>

1,531,934

Only get specific columns

Can I make my EF objects retrieve only specific columns in the sql executed? If I am executing the below code to retrieve objects, is there something I can do to only get certain columns if wanted? <pre><code>public IEnumerable<T> GetBy(Expression<Func<T, bool>> exp) { return _ctx.CreateQuery<T>(typeof(T).Name).Where<T>(exp); } </code></pre> This would generate a select clause that contains all columns. But, if I have a column that contains a large amount of data that really slows down the query, how can I have my objects exclude that column from the sql generated? If my table has Id(int), Status(int), Data(blob), how can I make my query be <pre><code>select Id, Status from TableName </code></pre> instead of <pre><code>select Id, Status, Data from TableName </code></pre> From the suggestion below, my method is <pre><code>public IEnumerable<T> GetBy(Expression<Func<T, bool>> exp, Expression<Func<T, T>> columns) { return Table.Where<T>(exp).Select<T, T>(columns); } </code></pre> And I'm calling it like so <pre><code>mgr.GetBy(f => f.Id < 10000, n => new {n.Id, n.Status}); </code></pre> However, I'm getting a compile error: <blockquote> Cannot implicitly convert type 'AnonymousType#1' to 'Entities.BatchRequest' </blockquote>

1,532,034

1

0

null

2009-10-07 14:19:14.943 UTC

14

2017-01-30 09:25:30.5 UTC

null

107,625

null

166,882

null

1

40

entity-framework

51,931

Sure. Projection does this: <pre><code>var q = from r in Context.TableName select new { Id = r.Id, Status = r.Status } </code></pre> Here's an actual example (obviously, my DB has different tables than yours). I added my EF model to LINQPad and typed the following query: <pre><code>from at in AddressTypes select new { Id = at.Id, Code = at.Code } </code></pre> LINQPad shows me that the generated SQL is: <pre><code>SELECT 1 AS [C1], [Extent1].[AddressTypeId] AS [AddressTypeId], [Extent1].[Code] AS [Code] FROM [dbo].[AddressType] AS [Extent1] </code></pre> None of the other fields from the table are included. Responding to updated question Your <code>columns</code> argument says it takes a type T and returns the same type. Therefore, the expression you pass must conform to this, or you need to change the type of the argument, i.e.: <pre><code>public IEnumerable GetBy(Expression<Func<T, bool>> exp, Expression<Func<T, U>> columns) { return Table.Where<T>(exp).Select<T, U>(columns); } </code></pre> Now the expression can return any type you care to use.

20,273,995

Custom map style in MapKit

I am looking for a way to implement a custom map style in iOS 7, just like you can do with <a href="https://developers.google.com/maps/documentation/javascript/styling" rel="nofollow noreferrer">Google Maps</a>. I have found some posts saying that this is not possible with MapKit, but they are all posted a while back. To clarify, by style I am talking about custom colors and preferably also fonts. Example of custom Google Map style below. <a href="https://i.stack.imgur.com/fw7LT.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/fw7LT.jpg" alt="enter image description here"></a> (source: <a href="http://www.servendesign.com/wp-content/uploads/2011/12/zaarley-custom-google-maps.jpg" rel="nofollow noreferrer">servendesign.com</a>) I would really prefer using MapKit for performance reasons, but if it is not supported I am open to using other frameworks as well. The ones that I have seen are MapBox and Cloudmade, and of course the Google Maps SDK. Is there a way of doing it with MapKit? If not, what is the best way to go?

20,274,924

3

0

null

2013-11-28 20:02:37.983 UTC

10

2019-10-24 23:20:33.803 UTC

2019-09-09 11:11:09.623 UTC

null

4,751,173

null

1,373,572

null

1

13

ios|google-maps|mapkit|mapbox|cloudmade

19,793

<code>MKMapView</code> does not expose the properties you're interested in customizing. The Google Maps SDK does support custom colors and icons for markers, which may be sufficient for your purposes. Edit: Stay tuned for iOS 11, which may offer this level of customization.

21,559,775

VBScript to open a dialog to select a filepath

At present I am opening a file with my vbscript as follows: <pre><code>strFile = "C:\Users\test\file.txt" Set objFile = objFSO.OpenTextFile(strFile) </code></pre> I would like to change this so that a file can be selected/navigated to by the user and that file is used in the script. How can I add this ability? I have tried to search for how to load a file dialog/prompt the user for a file etc just not sure how to complete in a VBScript.

21,565,999

3

0

null

2014-02-04 17:52:24.95 UTC

5

2019-05-06 16:42:24.82 UTC

2014-02-04 18:12:46.327 UTC

null

1,359,668

null

1,523,603

null

1

11

vba|vbscript|filepath

63,076

There is another solution I found interesting from <a href="http://social.technet.microsoft.com/Forums/scriptcenter/en-US/a3b358e8-15ae-4ba3-bca5-ec349df65ef6/windows7-vbscript-open-file-dialog-box-fakepath?forum=ITCG">MS TechNet</a> less customization but gets what you wanted to achieve. This returns the full path of the selected file. <pre><code>Set wShell=CreateObject("WScript.Shell") Set oExec=wShell.Exec("mshta.exe ""about:<input type=file id=FILE><script>FILE.click();new ActiveXObject('Scripting.FileSystemObject').GetStandardStream(1).WriteLine(FILE.value);close();resizeTo(0,0);</script>""") sFileSelected = oExec.StdOut.ReadLine wscript.echo sFileSelected </code></pre>

34,973,456

How to change text of a TextView in navigation drawer header?

I want to change the text of a TextView inside the navigation drawer header. But I get this error: <blockquote> java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference </blockquote> <hr> activity_main.xml <pre><code><?xml version="1.0" encoding="utf-8"?> <android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/drawer_layout" android:layout_width="match_parent" android:layout_height="match_parent" android:fitsSystemWindows="true" tools:openDrawer="start"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <include layout="@layout/app_bar_main" android:layout_width="match_parent" android:layout_height="wrap_content" /> <FrameLayout android:id="@+id/frame_container" android:layout_width="match_parent" android:layout_height="match_parent" /> </LinearLayout> <android.support.design.widget.NavigationView android:id="@+id/nav_view" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_gravity="start" android:fitsSystemWindows="true" app:headerLayout="@layout/nav_header_main" app:menu="@menu/activity_main_drawer" /> </android.support.v4.widget.DrawerLayout> </code></pre> nav_header_main <pre><code><?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="@dimen/nav_header_height" android:background="@drawable/slide_nav_bar" android:gravity="bottom" android:orientation="vertical" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:theme="@style/ThemeOverlay.AppCompat.Dark"> <ImageView android:id="@+id/tvHeaderIcon" android:layout_width="60dp" android:layout_height="60dp" android:paddingTop="@dimen/nav_header_vertical_spacing" android:src="@android:drawable/sym_def_app_icon" /> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:paddingTop="@dimen/nav_header_vertical_spacing" android:text="@string/app_name" android:textAppearance="@style/TextAppearance.AppCompat.Body1" /> <TextView android:id="@+id/tvHeaderName" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </LinearLayout> </code></pre> MainActivity.java <pre><code>TextView tvHeaderName; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tvHeaderName= (TextView) findViewById(R.id.tvHeaderName); tvHeaderName.setText("Saly"); } </code></pre> How can I do this?

38,418,531

11

0

null

2016-01-24 08:00:32.84 UTC

29

2021-08-21 21:37:21.77 UTC

2016-01-24 09:00:50.107 UTC

null

336,557

null

3,360,327

null

1

108

java|android|textview

97,685

Use function getHeaderView on your navigationView: <pre><code>NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view); View headerView = navigationView.getHeaderView(0); TextView navUsername = (TextView) headerView.findViewById(R.id.navUsername); navUsername.setText("Your Text Here"); </code></pre>

35,143,283

Google Drive API v3 Migration

I decided to migrate from Google Drive API v2 to v3 and it was not an easy task. Even thought Google wrote this <a href="https://developers.google.com/drive/v3/web/migration">documentation</a>, there are many gaps in it and there is not much information about this on the web. I'm sharing here what I have found.

35,143,284

2

1

null

2016-02-02 01:00:07.827 UTC

14

2022-01-14 12:12:36.917 UTC

2016-02-02 01:09:15.337 UTC

null

1,718,678

null

1,718,678

null

1

19

google-drive-api

11,785

First, read the official docs: <a href="https://developers.google.com/drive/api/v2/v2-to-v3-reference" rel="nofollow noreferrer">v2 to v3 reference</a> | <a href="https://developers.google.com/drive/api/v2/v3versusv2" rel="nofollow noreferrer">Drive API v3 versus v2</a> | <a href="https://developers.google.com/drive/api/v2/migrate-to-v3" rel="nofollow noreferrer">Migrate to v3</a> <hr> <h2>Download</h2> <a href="https://developers.google.com/drive/api/v3/manage-downloads" rel="nofollow noreferrer">Download</a> has changed. The field <code>downloadUrl</code> does not exist anymore. Now, it can be achieved with this: <pre><code>service.files().get(fileId).executeMediaAndDownloadTo(outputStream); </code></pre> I tried the new field <code>webContentLink</code> but it returns HTML content, instead of the file's content. In other words, it gives you the link to the Drive web UI. <hr> <h2>Upload</h2> Upload only requires to change the word <code>insert</code> for <code>create</code>, nothing more. <hr> <h2>Trash / Update</h2> I wasted some time with this one . Used to be a simple <code>service.files().trash(fileId).execute()</code>. Docs say <blockquote> files.trash -> files.update with {'trashed':true} </blockquote> The <a href="https://developers.google.com/drive/api/v2/reference/files/update#examples_1" rel="nofollow noreferrer">example code</a> for <code>update</code> on v2 makes a <code>get</code> on the file, sets new values and then calls <code>update</code>. On v3, using <code>update</code> like that throws this exception: <pre><code>{ "code" : 403, "errors" : [ { "domain" : "global", "message" : "The resource body includes fields which are not directly writable.", "reason" : "fieldNotWritable" } ], "message" : "The resource body includes fields which are not directly writable." } </code></pre> The solution is to create an empty <code>File</code> setting only the new values: <pre><code>File newContent = new File(); newContent.setTrashed(true); service.files().update(fileId, newContent).execute(); </code></pre> Note: <code>File</code> refers to <code>com.google.api.services.drive.model.File</code> (it is not <code>java.io.File</code>). <hr> <h2>List</h2> Files returned by <code>service.files().list()</code> does not contain information now, i.e. every field is null. If you want <code>list</code> on v3 to behave like in v2, call it like this: <pre><code>service.files().list().setFields("nextPageToken, files"); </code></pre> Docs on <a href="https://developers.google.com/drive/api/v3/search-files" rel="nofollow noreferrer">Search for files and folders</a> use <code>setFields("nextPageToken, files(id, name)")</code> but there is no documentation on how to get all the info for a file. Now you know, just include "files". <hr> <h2>Fields</h2> <blockquote> Full resources are no longer returned by default. Use the <code>fields</code> query parameter to request specific fields to be returned. If left unspecified only a subset of commonly used fields are returned. </blockquote> That last part is not totally true, since you are forced to use <code>setFields</code> in some cases. For example, if you use <code>service.about().get().execute()</code> you will get this error: <pre><code>"The 'fields' parameter is required for this method." </code></pre> which is solved by calling <code>service.about().get().setFields("user, storageQuota").execute()</code>, for instance. At the end of the docs is mentioned as: <blockquote> The <code>fields</code> query parameter should be specified for methods which return </blockquote> <hr> For the rest of the changes, just follow the Google table on the docs.

20,869,904

C++ handling of excess precision

I'm currently looking at <a href="http://www.cs.cmu.edu/afs/cs/project/quake/public/code/predicates.c">code which does multi-precision floating-point arithmetic</a>. To work correctly, that code requires values to be reduced to their final precision at well-defined points. So even if an intermediate result was computed to an <a href="http://en.wikipedia.org/wiki/Extended_precision#x86_Extended_Precision_Format">80 bit extended precision</a> floating point register, at some point it has to be rounded to <a href="http://en.wikipedia.org/wiki/Double-precision_floating-point_format">64 bit double</a> for subsequent operations. The code uses a macro <code>INEXACT</code> to describe this requirement, but doesn't have a perfect definition. The <a href="http://gcc.gnu.org/onlinedocs/gcc-4.8.2/gcc/Optimize-Options.html#index-ffloat-store-900">gcc manual</a> mentions <code>-fexcess-precision=standard</code> as a way to force well-defined precision for cast and assignment operations. However, it also writes: <blockquote> ‘-fexcess-precision=standard’ is not implemented for languages other than C </blockquote> Now I'm thinking about porting those ideas to C++ (comments welcome if anyone knows an existing implementation). So it seems I can't use that switch for C++. But what is the g++ default behavior in absence of any switch? Are there more C++-like ways to control the handling of excess precision? I guess that for my current use case, I'll probably use <code>-mfpmath=sse</code> in any case, which should not incur any excess precision as far as I know. But I'm still curious.

20,870,215

2

0

null

2014-01-01 14:58:09.98 UTC

9

2014-01-09 17:14:55.723 UTC

null

1,468,366

null

1

13

c++|gcc|floating-point|floating-point-precision|extended-precision

2,145

<blockquote> Are there more C++-like ways to control the handling of excess precision? </blockquote> The C99 standard defines <code>FLT_EVAL_METHOD</code>, a compiler-set macro that defines how excess precision should happen in a C program (many C compilers still behave in a way that does not exactly conform to the most reasonable interpretation of the value of <code>FP_EVAL_METHOD</code> that they define: older GCC versions generating 387 code, Clang when generating 387 code, …). Subtle points in relation with the effects of <code>FLT_EVAL_METHOD</code> were clarified in the C11 standard. Since the 2011 standard, C++ <a href="http://en.cppreference.com/w/cpp/types/climits/FLT_EVAL_METHOD" rel="noreferrer">defers to C99</a> for the definition of <code>FLT_EVAL_METHOD</code> (header cfloat). So GCC should simply allow <code>-fexcess-precision=standard</code> for C++, and hopefully it eventually will. The same semantics as that of C are already in the C++ standard, they only need to be implemented in C++ compilers. <hr> <blockquote> I guess that for my current use case, I'll probably use -mfpmath=sse in any case, which should not incur any excess precision as far as I know. </blockquote> That is the usual solution. Be aware that C99 also defines <code>FP_CONTRACT</code> in math.h that you may want to look at: it relates to the same problem of some expressions being computed at a higher precision, striking from a completely different side (the modern fused-multiply-add instruction instead of the old 387 instruction set). This is a pragma to decide whether the compiler is allowed to replace source-level additions and multiplications with FMA instructions (this has the effect that the multiplication is virtually computed at infinite precision, because this is how this instruction works, instead of being rounded to the precision of the type as it would be with separate multiplication and addition instructions). This pragma has apparently not been incorporated in the C++ standard (as far as I can see). The default value for this option is implementation-defined and some people argue for the default to be to allow FMA instructions to be generated (for C compilers that otherwise define <code>FLT_EVAL_METHOD</code> as 0). You should, in C, future-proof your code with: <pre><code>#include <math.h> #pragma STDC FP_CONTRACT off </code></pre> And the equivalent incantation in C++ if your compiler documents one. <hr> <blockquote> what is the g++ default behavior in absence of any switch? </blockquote> I am afraid that the answer to this question is that GCC's behavior, say, when generating 387 code, is nonsensical. See the description of the <a href="http://gcc.gnu.org/ml/gcc-patches/2008-11/msg00105.html" rel="noreferrer">situation</a> that motivated Joseph Myers to fix the situation for C. If g++ does not implement <code>-fexcess-precision=standard</code>, it probably means that 80-bit computations are randomly rounded to the precision of the type when the compiler happened to have to spill some floating-point registers to memory, leading the program below to print "foo" in some circumstances outside the programmer's control: <pre><code>if (x == 0.0) return; ... // code that does not modify x if (x == 0.0) printf("foo\n"); </code></pre> … because the code in the ellipsis caused <code>x</code>, that was held in an 80-bit floating-point register, to be spilt to a 64-bit slot on the stack.

18,814,559

PHP Upload form, PDF, Doc & Docx

I'm struggling to make this upload code work for a docx file, it works okay for doc and pdf.. <pre><code>$allowedExts = array("pdf", "doc", "docx"); $extension = end(explode(".", $_FILES["file"]["name"])); if ((($_FILES["file"]["type"] == "application/pdf") || ($_FILES["file"]["type"] == "application/msword")) && ($_FILES["file"]["size"] < 20000000) && in_array($extension, $allowedExts)) { if ($_FILES["file"]["error"] > 0) { echo "Return Code: " . $_FILES["file"]["error"] . " "; } </code></pre> this is part of a project from a while ago and i honestly can't remember how to do it.. I know it's not the most secure upload method, but if someone could help it would be appreciated! I'm thinking i need to add another line here: <pre><code>if ((($_FILES["file"]["type"] == "application/pdf") || ($_FILES["file"]["type"] == "application/msword")) && ($_FILES["file"]["size"] < 20000000) </code></pre> Just not sure what.. Help is appreciated! Edit: So i've got to this stage (with the help of comments!) <pre><code>$allowedExts = array("pdf", "doc", "docx"); $extension = end(explode(".", $_FILES["file"]["name"])); //if ((($_FILES["file"]["type"] == "application/pdf") //|| ($_FILES["file"]["type"] == "application/msword")) if (($_FILES["file"]["type"] == "application/pdf") || ($_FILES["file"]["type"] == "application/msword") || ($_FILES["file"]["type"] == "application/vnd.openxmlformats- officedocument.wordprocessingml.document")) && ($_FILES["file"]["size"] < 20000000) && in_array($extension, $allowedExts)) { if ($_FILES["file"]["error"] > 0) { echo "Return Code: " . $_FILES["file"]["error"] . " "; } else { </code></pre> But now its coming up with: Parse error: syntax error, unexpected T_BOOLEAN_AND in /var/sites/s/stanation.com/public_html/forms/process/insert.php on line 30

18,814,707

3

0

null

2013-09-15 16:14:28.43 UTC

0

2018-08-14 10:53:46.783 UTC

2013-09-15 16:46:12.11 UTC

null

1,260,444

null

1,260,444

null

1

4

php|html|upload

47,632

For <code>docx</code> check this MIME type <pre><code>application/vnd.openxmlformats-officedocument.wordprocessingml.document </code></pre> EDIT : Here's the code . You're missing parenthesis <pre><code><?php $allowedExts = array("pdf", "doc", "docx"); $extension = end(explode(".", $_FILES["file"]["name"])); if (($_FILES["file"]["type"] == "application/pdf") || ($_FILES["file"]["type"] == "application/msword") || ($_FILES["file"]["type"] == "application/vnd.openxmlformats-officedocument.wordprocessingml.document") && ($_FILES["file"]["size"] < 20000000) && in_array($extension, $allowedExts)) { if ($_FILES["file"]["error"] > 0) { echo "Return Code: " . $_FILES["file"]["error"] . " "; } else { echo "Success"; } } </code></pre>

24,019,807

How to compare a model with no random effects to a model with a random effect using lme4?

I can use gls() from the nlme package to build mod1 with no random effects. I can then compare mod1 using AIC to mod2 built using lme() which does include a random effect. <pre><code>mod1 = gls(response ~ fixed1 + fixed2, method="REML", data) mod2 = lme(response ~ fixed1 + fixed2, random = ~1 | random1, method="REML",data) AIC(mod1,mod2) </code></pre> Is there something similar to gls() for the lme4 package which would allow me to build mod3 with no random effects and compare it to mod4 built using lmer() which does include a random effect? <pre><code>mod3 = ???(response ~ fixed1 + fixed2, REML=T, data) mod4 = lmer(response ~ fixed1 + fixed2 + (1|random1), REML=T, data) AIC(mod3,mod4) </code></pre>

24,020,669

2

0

null

2014-06-03 16:04:11.56 UTC

11

2021-12-08 14:26:33.353 UTC

2014-06-03 16:31:24.327 UTC

null

190,277

null

3,703,460

null

1

21

r|lme4|mixed-models|nlme

19,037

With modern (>1.0) versions of <code>lme4</code> you can make a direct comparison between <code>lmer</code> fits and the corresponding <code>lm</code> model, but you have to use ML --- it's hard to come up with a sensible analogue of the "REML criterion" for a model without random effects (because it would involve a linear transformation of the data that set all of the fixed effects to zero ...) You should be aware that there are theoretical issues with information-theoretic comparisons between models with and without variance components: see the <a href="https://bbolker.github.io/mixedmodels-misc/glmmFAQ.html" rel="noreferrer">GLMM FAQ</a> for more information. <pre><code>library(lme4) fm1 <- lmer(Reaction~Days+(1|Subject),sleepstudy, REML=FALSE) fm0 <- lm(Reaction~Days,sleepstudy) AIC(fm1,fm0) ## df AIC ## fm1 4 1802.079 ## fm0 3 1906.293 </code></pre> I prefer output in this format (delta-AIC rather than raw AIC values): <pre><code>bbmle::AICtab(fm1,fm0) ## dAIC df ## fm1 0.0 4 ## fm0 104.2 3 </code></pre> To test, let's simulate data with no random effect (I had to try a couple of random-number seeds to get an example where the among-subject std dev was actually estimated as zero): <pre><code>rr <- simulate(~Days+(1|Subject), newparams=list(theta=0,beta=fixef(fm1), sigma=sigma(fm1)), newdata=sleepstudy, family="gaussian", seed=103)[[1]] ss <- transform(sleepstudy,Reaction=rr) fm1Z <- update(fm1,data=ss) VarCorr(fm1Z) ## Groups Name Std.Dev. ## Subject (Intercept) 0.000 ## Residual 29.241 fm0Z <- update(fm0,data=ss) all.equal(c(logLik(fm0Z)),c(logLik(fm1Z))) ## TRUE </code></pre>

36,186,831

How do I hide the VueJS syntax while the page is loading?

maybe this is a trivial question. so, when I run my vuejs application on browser with enables throttling download speed (sets to low connection). I got unfinished vue syntax output in browser. <a href="https://i.stack.imgur.com/0wTIv.png" rel="noreferrer"><img src="https://i.stack.imgur.com/0wTIv.png" alt="Vue js syntax appear in browser"></a> I know we can trick this out with showing loading image before entire page has loaded, but it's there any best solution to fix this?

36,187,668

12

0

null

2016-03-23 19:15:02.47 UTC

41

2022-07-15 22:23:51.007 UTC

2018-10-08 20:09:23.48 UTC

null

304,151

null

2,230,192

null

1

191

javascript|vue.js

67,049

You can use the <a href="https://v2.vuejs.org/v2/api/#v-cloak" rel="nofollow noreferrer">v-cloak</a> directive, which will hide the Vue instance until the compilation finishes, if you combine it with the right CSS. HTML: <pre><code><div v-cloak>{{ message }}</div> </code></pre> CSS: <pre><code>[v-cloak] { display: none; } </code></pre>

44,527,956

Python: ufunc 'add' did not contain a loop with signature matching types dtype('S21') dtype('S21') dtype('S21')

I have two dataframes, which both have an <code>Order ID</code> and a <code>date</code>. I wanted to add a flag into the first dataframe <code>df1</code>: if a record with the same <code>order id</code> and <code>date</code> is in dataframe <code>df2</code>, then add a <code>Y</code>: <pre><code>[ df1['R'] = np.where(orders['key'].isin(df2['key']), 'Y', 0)] </code></pre> To accomplish that, I was going to create a key, which would be the concatenation of the <code>order_id</code> and <code>date</code>, but when I try the following code: <pre><code>df1['key']=df1['Order_ID']+'_'+df1['Date'] </code></pre> I get this error <pre><code>ufunc 'add' did not contain a loop with signature matching types dtype('S21') dtype('S21') dtype('S21') </code></pre> df1 looks like this: <pre><code>Date | Order_ID | other data points ... 201751 4395674 ... 201762 3487535 ... </code></pre> These are the datatypes: <pre><code>df1.info() RangeIndex: 157443 entries, 0 to 157442 Data columns (total 6 columns): Order_ID 157429 non-null object Date 157443 non-null int64 ... dtypes: float64(2), int64(2), object(2) memory usage: 7.2+ MB df1['Order_ID'].values array(['782833030', '782834969', '782836416', ..., '783678018', '783679806', '783679874'], dtype=object) </code></pre>

44,528,113

2

0

null

2017-06-13 17:27:19.83 UTC

4

2022-07-30 23:24:50.517 UTC

2017-06-13 17:45:59.087 UTC

null

5,393,381

null

5,187,157

null

1

36

python|pandas|numpy|dataframe|concatenation

126,599

The problem is that you can't add an object array (containing strings) to a number array, that's just ambiguous: <pre><code>>>> import pandas as pd >>> pd.Series(['abc', 'def']) + pd.Series([1, 2]) TypeError: ufunc 'add' did not contain a loop with signature matching types dtype('<U21') dtype('<U21') dtype('<U21') </code></pre> You need to explicitly convert your <code>Dates</code> to <code>str</code>. I don't know how to do that efficiently in pandas but you can use: <pre><code>df1['key'] = df1['Order_ID'] + '_' + df1['Date'].apply(str) # .apply(str) is new </code></pre>

43,833,895

How to Include JS file in ionic 3

Im looking for a way to access a variable from external js file which i included in assets/data folder below is what i tried placed <code>test.js</code> in assets/data folder in <code>test.js</code> added variable <code>testvar = "heloo from external js";</code> added script tag in <code>src/index.html</code> <code><script src="assets/data/test.js"></script></code> in <code>app.component.ts</code> i added this line after imports;<code>declare var testvar: any;</code> in constructor added this line to log the value <code>console.log(testvar);</code> result is error : ERROR ReferenceError: testvar is not defined so, how can i use my js variable in typescript ?

44,134,679

5

0

null

2017-05-07 16:30:08.987 UTC

12

2019-11-13 10:55:33.537 UTC

2017-05-07 16:36:28.883 UTC

null

4,826,457

null

5,160,386

null

1

22

angular|typescript|ionic2|ionic3

58,901

This solution only worked for me <blockquote> Put the import js in <code>src/index.html</code> header tag, before the <code>build/polyfills.js</code> and <code>build/main.js</code> (they are in body tag); </blockquote> Example : I created a file <code>src/assets/test.js</code> with a <code>var testvar</code>, imported in <code>src/index.html</code> and then in <code>src/app/app.component.ts</code> declared <code>declare var testvar;</code>. test.js <pre><code>var testvar = "Hello from external js"; </code></pre> index.html <pre><code>... <link rel="icon" type="image/x-icon" href="assets/icon/favicon.ico"> <link rel="manifest" href="manifest.json"> <meta name="theme-color" content="#4e8ef7">  <script src="cordova.js"></script> <script src="assets/js/test.js"></script> //here, not in body ... </code></pre> app.componet.ts <pre><code>declare var testvar; @Component({ templateUrl: 'app.html' }) export class MyApp { @ViewChild(Nav) nav: Nav; constructor(private statusbar : StatusBar, splashScreen: SplashScreen) { alert(testvar); ... </code></pre>

49,694,134

Angular Material: How to close all mat-dialogs and sweet-alerts on logout

I wanted to close all my dialog's (mat-dialog, bootstrap modals & sweet alerts) on logout in Angular. This is how it was done in AngularJS (version 1.5): <pre><code>function logout() { //hide $mdDialog modal angular.element('.md-dialog-container').hide(); //hide any open $mdDialog modals & backdrop angular.element('.modal-dialog').hide(); angular.element('md-backdrop').remove(); //hide any open bootstrap modals & backdrop angular.element('.inmodal').hide(); angular.element('.fade').remove(); //hide any sweet alert modals & backdrop angular.element('.sweet-alert').hide(); angular.element('.sweet-overlay').remove(); } </code></pre> How can I do this in Angular? Using <code>$('.mat-dialog-container')</code> or <code>$('.inmodal')</code> does't give me an option to do <code>hide()</code> or <code>close()</code> I tried doing this, but I wan't able to get the element reference: <pre><code>import { ElementRef, Injectable, ViewChild } from '@angular/core'; import { MatDialog, MatDialogContainer, MatDialogRef } from '@angular/material'; export class MyClass { @ViewChild('.mat-dialog-container') _matDialog: ElementRef; @ViewChild('.mat-dialog-container') _matDialogRef:MatDialogRef<MatDialog>; constructor() { } function logout() { //access the dialogs here } } </code></pre>

49,762,913

2

0

null

2018-04-06 13:38:19.273 UTC

2

2021-03-12 15:12:45.023 UTC

2018-08-30 20:02:38.597 UTC

null

2,658,683

null

2,609,095

null

1

33

angular|angular-material|ng-bootstrap|sweetalert2

32,691

This is what i have done to close any open <code>mat-dialog</code> throughout the application: <pre><code>import {MatDialog} from '@angular/material'; export class myClass { constructor(private dialogRef: MatDialog) { } logOut() { this.dialogRef.closeAll(); } } </code></pre> If you would like to close only a specific dialog you can loop through <code>dialogRef.openDialogs</code> and close the respective dialog using <code>close()</code> This is how you can close any open/active sweet alert dialog: <pre><code>const sweetAlertCancel = document.querySelector('.swal2-cancel') as HTMLElement; if (sweetAlertCancel) { sweetAlertCancel.click(); //only if cancel button exists } const sweetAlertConfirm = document.querySelector('.swal2-confirm') as HTMLElement; if (sweetAlertConfirm) { sweetAlertConfirm.click(); //if cancel doesn't exist , confirm is the equivalent for Ok button } </code></pre> Unlike <code>material-dialog</code> there is no method available to close or hide all open sweet alert dialog's. This is what i'm able to do so far.

50,840,511

google.cloud import storage: cannot import storage

I tried to run the code bellow by following the google tutorials i found here: <a href="https://cloud.google.com/docs/authentication/production" rel="noreferrer">https://cloud.google.com/docs/authentication/production</a> <pre><code>def implicit(): from google.cloud import storage # If you don't specify credentials when constructing the client, the # client library will look for credentials in the environment. project = 'my_project_name' storage_client = storage.Client(project=project) # Make an authenticated API request buckets = list(storage_client.list_buckets()) print(buckets) implicit() </code></pre> But it keeps giving me the following error: <pre><code>Traceback (most recent call last): File "[PATH]/scratch_5.py", line 13, in <module> implicit() File "[PATH]/scratch_5.py", line 2, in implicit from google.cloud import storage ImportError: cannot import name storage </code></pre> Could someone help me with this?

50,841,078

3

0

null

2018-06-13 15:04:08.483 UTC

2

2020-10-28 14:56:23.93 UTC

2018-06-13 15:44:19.487 UTC

null

4,482,491

null

9,707,310

null

1

33

python|google-cloud-platform|google-cloud-storage

72,344

I see you are trying to use the <a href="https://cloud.google.com/storage/docs/reference/libraries#client-libraries-install-python" rel="noreferrer">Google Cloud Storage client libraries</a>. In order to use it, you should first make sure that it is installed in your machine: <pre><code>pip install --upgrade google-cloud-storage </code></pre> And then, you should probably set up authentication (if you are using <a href="https://cloud.google.com/docs/authentication/production#auth-cloud-implicit-python" rel="noreferrer">Application Default Credentials</a>, from the documentation you mentioned), by setting up the <code>GOOGLE_APPLICATION_CREDENTIALS</code> environment variable in the machine where you are running the code, like below. If you are using Windows, follow the <a href="https://cloud.google.com/storage/docs/reference/libraries#setting_up_authentication" rel="noreferrer">steps presented in the documentation</a>, instead. <pre><code>export GOOGLE_APPLICATION_CREDENTIALS="/path/to/file.json" </code></pre> Alternatively, you can try <a href="https://cloud.google.com/docs/authentication/production#obtaining_and_providing_service_account_credentials_manually" rel="noreferrer">using explicit credentials</a>. The only difference between the one you shared (using implicit credentials obtained from the environment) and one using explicit credentials, is that when you declare the GCS client, you should do something like: <pre><code>storage_client = storage.Client.from_service_account_json('/path/to/SA_key.json') </code></pre> Once all this is ready, you should have no issues with running the sample code you provided. In order to keep learning about GCS and its client libraries, feel free to search on the documentation I linked and have a look at the <a href="https://google-cloud-python.readthedocs.io/en/latest/storage/client.html" rel="noreferrer">library reference page</a>.

39,928,401

Recover DB password stored in my DBeaver connection

I forgot the password of a dev instance (irresponsible.. yeah, I am working on it). I have the connection saved in my DBeaver with the password. I am still able to connect using that connection. DBeaver is not showing it in plain text. Is there anyway I can retrieve the password? Asking DBA to reset the password is the last resort. I tried to copy paste to a notepad, copying is disabled apparently.

39,928,445

10

1

null

2016-10-08 03:33:15.07 UTC

51

2022-07-02 23:21:45.727 UTC

2020-05-06 17:19:27.65 UTC

null

792,066

null

6,934,076

null

1

111

dbeaver

94,609

<h2>Edit: For DBeaver 6.1.3+</h2> The credential file is located ~/Library/DBeaverData/workspace6/General/.dbeaver/credentials-config.json (I was on Mac) and it follows a different encryption strategy than it's predecessors. Please refer the next answer to see how to decrypt. It works like a charm. <h2>Pre- DBeaver 6.1.3</h2> Follow these steps (My DBeaver version was 3.5.8 and it was on Mac OsX El Capitan) <ol> <li>Locate the file in which DBeaver stores the connection details. For me, it was in this location <code>~/.dbeaver/General/.dbeaver-data-sources.xml</code>. This file is hidden, so keep that in mind when you look for it.</li> <li>Locate your interested Datasource Definition node in that file.</li> <li>Decrypt the password: Unfortunately, everything is in plain text except password; Password is in some kind of Encrypted form. Decrypt it to plain-text using this <a href="https://bugdays.com/dbeaver-password-decrypter" rel="noreferrer">tool</a>.</li> </ol> <h1>Or</h1> I put together a quick and dirty <a href="https://github.com/so-random-dude/oneoffcodes/blob/master/SimpleStringEncrypter.java" rel="noreferrer">Java program</a> by copying core of DBeaver's method for decrypting the password. Once you have the Encrypted password string, just execute this program, it will convert the password to plain text and prints it <h1>How to run it</h1> On Line Number 13, just replace <code>OwEKLE4jpQ==</code> with whatever encrypted password you are finding in <code>.dbeaver-data-sources.xml</code> file for your interested datasource. Compile it and run it, it will print the plain-text password. <a href="https://github.com/jaisonpjohn/dbeaver-password-retriever/blob/master/SimpleStringEncrypter.java" rel="noreferrer">https://github.com/jaisonpjohn/dbeaver-password-retriever/blob/master/SimpleStringEncrypter.java</a> <h1>Edit</h1> Apparently, this is a "Popular" mistake. So I have deployed an AWS lambda function with the aforementioned code. Use this at your own risk, you will never know whether I am logging your password or not <pre><code>curl https://lmqm83ysii.execute-api.us-west-2.amazonaws.com/prod/dbeaver-password-decrypter \ -X POST --data "OwEKLE4jpQ==" </code></pre> <h1>Edit 2</h1> Even better, here is the UI <a href="https://bugdays.com/dbeaver-password-decrypter" rel="noreferrer">https://bugdays.com/dbeaver-password-decrypter</a>. This goes without saying, use this at your own risk

29,392,529

Hide RecyclerView scrollbar

How can I remove the scrollbar in my recyclerview? I've tried with <code>mRecyclerView.setScrollBarSize(0);</code> but it's not working. (Actually, it doesn't do anything, whatever the value I set).

29,956,318

2

null

2015-04-01 13:47:48.05 UTC

1

2020-03-23 12:29:44.63 UTC

null

2,535,024

null

1

34

android|android-recyclerview

24,362

Put <code>android:scrollbars="none"</code> like this: <pre><code><android.support.v7.widget.RecyclerView android:id="@+id/RecyclerViewId" android:layout_width="match_parent" android:layout_height="match_parent" android:scrollbars="none" > </android.support.v7.widget.RecyclerView> </code></pre> <h2>Update for androidx library :</h2> <pre><code> <androidx.recyclerview.widget.RecyclerView android:id="@+id/recyclerView" android:layout_width="match_parent" android:layout_height="match_parent" android:scrollbars="none" > </androidx.recyclerview.widget.RecyclerView> </code></pre>

46,786,986

How and where to use ::ng-deep?

I'm new to Angular 4, so could anyone please explain how and where to use <code>::ng-deep</code> in Angular 4? Actually I want to overwrite some of the CSS properties of the child components from the parent components. Moreover is it supported on IE11? Thanks for the help.

46,787,145

7

1

null

2017-10-17 09:34:24.03 UTC

43

2022-09-09 18:22:18.193 UTC

2021-01-28 07:01:22.897 UTC

null

-1

null

8,778,646

null

1

193

css|angular|angular-template

323,788

Usually <code>/deep/ “shadow-piercing”</code> combinator can be used to force a style down to <code>child components</code>. This selector had an alias >>> and now has another one called ::ng-deep. since <code>/deep/ combinator</code> has been deprecated, it is recommended to use <code>::ng-deep</code> For example: <pre><code><div class="overview tab-pane" id="overview" role="tabpanel" [innerHTML]="project?.getContent( 'DETAILS')"></div> </code></pre> and <code>css</code> <pre><code>.overview { ::ng-deep { p { &:last-child { margin-bottom: 0; } } } } </code></pre> it will be applied to child components

4,213,095

Python and ctypes: how to correctly pass "pointer-to-pointer" into DLL?

I have a DLL that allocates memory and returns it. Function in DLL is like this: <pre><code>void Foo( unsigned char** ppMem, int* pSize ) { * pSize = 4; * ppMem = malloc( * pSize ); for( int i = 0; i < * pSize; i ++ ) (* ppMem)[ i ] = i; } </code></pre> Also, i have a python code that access this function from my DLL: <pre><code>from ctypes import * Foo = windll.mydll.Foo Foo.argtypes = [ POINTER( POINTER( c_ubyte ) ), POINTER( c_int ) ] mem = POINTER( c_ubyte )() size = c_int( 0 ) Foo( byref( mem ), byref( size ) ] print size, mem[ 0 ], mem[ 1 ], mem[ 2 ], mem[ 3 ] </code></pre> I'm expecting that <code>print</code> will show "4 0 1 2 3" but it shows "4 221 221 221 221" O_O. Any hints what i'm doing wrong?

4,218,409

1

2

null

2010-11-18 09:02:25.237 UTC

12

2021-10-07 21:54:13.793 UTC

2010-11-18 14:12:35.667 UTC

null

68,063

null

69,882

null

1

27

python|ctypes

28,398

Post actual code. The C/C++ code doesn't compile as either C or C++. The Python code has syntax errors (] ending function call Foo). The code below works. The main issue after fixing syntax and compiler errors was declaring the function <code>__stdcall</code> so <code>windll</code> could be used in the Python code. The other option is to use <code>__cdecl</code> (normally the default) and use <code>cdll</code> instead of <code>windll</code> in the Python code. mydll.c (cl /W4 /LD mydll.c) <pre class="lang-c prettyprint-override"><code> #include <stdlib.h> __declspec(dllexport) void __stdcall Foo(unsigned char** ppMem, int* pSize) { char i; *pSize = 4; *ppMem = malloc(*pSize); for(i = 0; i < *pSize; i++) (*ppMem)[i] = i; } </code></pre> demo.py (Python 2/3 and 32-/64-bit compatible) <pre class="lang-py prettyprint-override"><code>from __future__ import print_function from ctypes import * Foo = WinDLL('./mydll').Foo Foo.argtypes = POINTER(POINTER(c_ubyte)), POINTER(c_int) Foo.restype = None mem = POINTER(c_ubyte)() size = c_int() Foo(byref(mem),byref(size)) print(size.value, mem[0], mem[1], mem[2], mem[3]) </code></pre> Output <pre class="lang-none prettyprint-override"><code>4 0 1 2 3 </code></pre>

26,583,669

Looking to give MailChimp dynamic content?

Ok so I'm looking to send out a weekly scheduled email with MailChimp. The email is to contain the newest 20 of the stock list (car stocklist of garage) to their subscribers. I can't seem to get this to work with an RSS feed as imagined so i wondered is there any other way to get some formatted HTML (in a PHP file) into the body of MailChimp template on a weekly basis? Many thanks.

27,711,344

2

0

null

2014-10-27 08:37:07.193 UTC

8

2019-02-12 12:21:24.693 UTC

null

857,782

null

1

13

php|html|email|dynamic|mailchimp

21,752

If looking to inject custom content into a template at the time of sending, I would recommend having a look into creating a custom template that uses our template language. If you've created a custom template within MailChimp using our template language to specify editable content areas: <a href="http://templates.mailchimp.com/getting-started/template-language/" rel="noreferrer">http://templates.mailchimp.com/getting-started/template-language/</a>, then you would be able to update those content areas via the API. To do this, you'll want to make either a campaigns/create call: <a href="https://apidocs.mailchimp.com/api/2.0/campaigns/create.php" rel="noreferrer">https://apidocs.mailchimp.com/api/2.0/campaigns/create.php</a> or a campaigns/update call: <a href="https://apidocs.mailchimp.com/api/2.0/campaigns/update.php" rel="noreferrer">https://apidocs.mailchimp.com/api/2.0/campaigns/update.php</a> and specify the section and content that you'd like to change as part of the 'content' parameter. the content 'sections' will correspond to the mc:edit tags that were added to the custom template. You also have the ability to customize your content, like adding a first name to a greeting in the body of your content for instance, even further with the use of merge tags. I highly recommend checking those out as well and consider using them in your content if you need that level of customization: Getting Started with Merge Tags: <a href="http://kb.mailchimp.com/merge-tags/using/getting-started-with-merge-tags" rel="noreferrer">http://kb.mailchimp.com/merge-tags/using/getting-started-with-merge-tags</a>

20,346,456

How to establish socket connection using the command line

How can I establish my socket connection using the Windows command line? For example, my socket IP and port num is <code>192.168.1.180:9760</code> I just want to send commands to that IP from the command line.

20,346,608

2

1

null

2013-12-03 08:45:41.017 UTC

2

2016-08-26 10:26:31.673 UTC

null

321,731

null

2,901,888

null

1

12

windows|sockets|batch-file

45,568

You can use "netcat", or "nc" as it is sometimes called. So if the server is using UDP on port 9760, you can use: <pre><code>nc -u 192.168.1.180 9760 </code></pre>

6,485,127

How can I delete/unset the properties of a JavaScript object?

<blockquote> Possible Duplicates: <a href="https://stackoverflow.com/questions/1596782">How can I unset a JavaScript variable?</a> <a href="https://stackoverflow.com/questions/208105">How do I remove a property from a JavaScript object?</a> </blockquote> I'm looking for a way to remove/unset the properties of a JavaScript object, so they'll no longer come up if I loop through the object doing <code>for (var i in myObject)</code>. How can this be done?

6,485,155

2

null

2011-06-26 16:19:55.18 UTC

5

2021-07-19 13:22:09.047 UTC

2021-07-19 13:15:00.72 UTC

null

63,550

null

49,153

null

1

130

javascript|jquery

124,874

Simply use <code>delete</code>, but be aware that you should read fully what the effects are of using this: <pre><code> delete object.index; //true object.index; //undefined </code></pre> But if I was to use like so: <pre><code>var x = 1; //1 delete x; //false x; //1 </code></pre> But if you do wish to delete variables in the global namespace, you can use its global object such as <code>window</code>, or using <code>this</code> in the outermost scope, i.e., <pre><code>var a = 'b'; delete a; //false delete window.a; //true delete this.a; //true </code></pre> <a href="http://perfectionkills.com/understanding-delete/" rel="noreferrer">Understanding delete</a> Another fact is that using delete on an array will not remove the index, but only set the value to undefined, meaning in certain control structures such as for loops, you will still iterate over that entity. When it comes to arrays you should use <code>splice</code> which is a prototype of the array object. Example Array: <pre><code>var myCars = new Array(); myCars[0] = "Saab"; myCars[1] = "Volvo"; myCars[2] = "BMW"; </code></pre> If I was to do: <pre><code>delete myCars[1]; </code></pre> the resulting array would be: <pre><code>["Saab", undefined, "BMW"] </code></pre> But using splice like <pre><code>myCars.splice(1,1); </code></pre> would result in: <pre><code>["Saab", "BMW"] </code></pre>

7,534,407

How to write event log using vbscript

I want to write event log when this vbscript run. How to i can? Thanks for any help.

7,534,449

3

0

null

2011-09-23 20:22:23.99 UTC

3

2011-09-27 15:50:33.87 UTC

null

911,383

null

1

5

vbscript|event-log

38,857

Like so: <pre><code>Set shell = CreateObject("WScript.Shell") shell.LogEvent 4, "Your Message Here" </code></pre> The 4 is a severity level. You can learn more about the <code>LogEvent</code> method on <a href="http://msdn.microsoft.com/en-us/library/b4ce6by3(v=VS.85).aspx" rel="noreferrer">MSDN</a>.

7,138,021

jquery add remove class onclick

i have any navigation menu ! <pre><code> <div class="nav"> <ul class="navigation"> <li class="selected"><a href="#">HOME</a></li> <li><a href="#">PROFILE></a></li> <li><a href="#">CONTACTUS</a></li> <li><a href="#">ABOATUS</a></li> </ul> </div> </code></pre> Now how to add selected class after click to any ( profile, Contactus, aboutus ) and remove selected home using Jquery. Thanks

7,138,134

3

0

null

2011-08-21 11:38:44.823 UTC

9

2012-03-15 15:08:57.057 UTC

null

892,965

null

1

11

jquery|navigation|addclass|removeclass

39,813

On the assumption that you want to have only one element of class-name <code>selected</code> I suggest: <pre><code>$('ul.navigation li a').click( function(e) { e.preventDefault(); // prevent the default action e.stopPropagation(); // stop the click from bubbling $(this).closest('ul').find('.selected').removeClass('selected'); $(this).parent().addClass('selected'); }); </code></pre> <a href="http://jsfiddle.net/davidThomas/eMx7X/" rel="noreferrer">JS Fiddle demo</a>.

24,399,294

Android: AsyncTask to make an HTTP GET Request?

I'm new to Android development. My question is, do I use AsyncTask in order to make an HTTP GET request (JSON response)? Is this correct? Does anyone know where I can see an example of this if this is indeed true? If not, could you correct me? Thanks!

24,399,320

8

2

null

2014-06-25 02:32:23.667 UTC

5

2022-05-14 10:53:24.603 UTC

2017-07-17 07:47:36.15 UTC

null

192,373

null

2,020,101

null

1

20

android|android-asynctask|httprequest

91,410

Yes you are right, Asynctask is used for short running task such as connection to the network. Also it is used for background task so that you wont block you UI thread or getting exception because you cant do network connection in your UI/Main thread. example: <pre><code>class JSONAsyncTask extends AsyncTask<String, Void, Boolean> { @Override protected void onPreExecute() { super.onPreExecute(); } @Override protected Boolean doInBackground(String... urls) { try { //------------------>> HttpGet httppost = new HttpGet("YOU URLS TO JSON"); HttpClient httpclient = new DefaultHttpClient(); HttpResponse response = httpclient.execute(httppost); // StatusLine stat = response.getStatusLine(); int status = response.getStatusLine().getStatusCode(); if (status == 200) { HttpEntity entity = response.getEntity(); String data = EntityUtils.toString(entity); JSONObject jsono = new JSONObject(data); return true; } } catch (IOException e) { e.printStackTrace(); } catch (JSONException e) { e.printStackTrace(); } return false; } protected void onPostExecute(Boolean result) { } </code></pre>

24,134,693

How to uninstall the "Microsoft Advertising SDK" Visual Studio extension?

One of the extensions listed in Visual Studio (2012 for me) is the "Microsoft Advertising SDK for Windows 8.1". I like to uninstall extensions I don't need, but this one won't allow me. if I hover the (enabled!) button it says in a tooltip: <blockquote> This product cannot be uninstalled via extensions and updates </blockquote> It looks like this: <img src="https://i.stack.imgur.com/VGiiz.png" alt="extensions"> On second inspection I see a similar (more helpful) message bottom right: <blockquote> You need to use the Programs and Features pane in the Windows Control Panel to remove this extension. </blockquote> Easy enough, no? But it's not there! <img src="https://i.stack.imgur.com/18lU5.png" alt="uninstalls"> Or: <img src="https://i.stack.imgur.com/LlgEK.png" alt="uninstalls search"> <strike>In addition to the instructions on screen I also searched. The only helpful source was <a href="http://msdn.microsoft.com/en-us/library/advertising-windows-prereqs%28v=msads.10%29.aspx" rel="noreferrer">this MSDN page</a> that says basically the same thing.</strike> Link is now broken. <strike>Commenters mentioned that <a href="http://visualstudiogallery.msdn.microsoft.com/3d3fa204-0641-4317-ab2c-50092f732edb" rel="noreferrer">the extension web page</a> (see "Reviews" and "Q AND A" tabs) has a few similar complaints. I've cross-posted this question there as well.</strike> Link is now broken, but if you search others are complaining still on the MSDN forums. In any case: is there an easy way to uninstall this extension?

24,449,757

7

2

null

2014-06-10 06:54:17.62 UTC

68

2016-11-20 20:57:02.3 UTC

null

419,956

null

419,956

null

1

179

visual-studio|visual-studio-extensions

19,743

Run the following from an elevated Powershell prompt: <pre><code>gwmi Win32_Product -Filter "Name LIKE 'Microsoft Advertising%'" </code></pre> And it should show the culprits: <pre><code>IdentifyingNumber : {6AB13C21-C3EC-46E1-8009-6FD5EBEE515B} Name : Microsoft Advertising SDK for Windows 8.1 - ENU Vendor : Microsoft Corporation Version : 8.1.30809.0 Caption : Microsoft Advertising SDK for Windows 8.1 - ENU IdentifyingNumber : {6AC81125-8485-463D-9352-3F35A2508C11} Name : Microsoft Advertising SDK for Windows Phone 8.1 XAML - ENU Vendor : Microsoft Corporation Version : 8.1.40427.0 Caption : Microsoft Advertising SDK for Windows Phone 8.1 XAML - ENU IdentifyingNumber : {5C87A4DB-31C7-465E-9356-71B485B69EC8} Name : Microsoft Advertising SDK for Windows Phone - ENU Vendor : Microsoft Corporation Version : 6.2.960.0 Caption : Microsoft Advertising SDK for Windows Phone - ENU IdentifyingNumber : {EBD9DB6D-180B-4C59-9622-B75CC4B32C94} Name : Microsoft Advertising Service Extension for Visual Studio Vendor : Microsoft Corporation Version : 12.0.40402.0 Caption : Microsoft Advertising Service Extension for Visual Studio </code></pre> Then to actually uninstall add <code>| foreach { $_.Uninstall() }</code> to the command like so: <pre><code>gwmi Win32_Product -Filter "Name LIKE 'Microsoft Advertising%'" | foreach { $_.Uninstall() } </code></pre> Which should display for each one: <pre><code>__GENUS : 2 __CLASS : __PARAMETERS __SUPERCLASS : __DYNASTY : __PARAMETERS __RELPATH : __PROPERTY_COUNT : 1 __DERIVATION : {} __SERVER : __NAMESPACE : __PATH : ReturnValue : 0 PSComputerName : </code></pre> The important thing to look for is <code>ReturnValue : 0</code> which means success. If you get <code>ReturnValue : 1603</code> it likely means your Powershell prompt wasn't elevated (running as admin). (Full list of ReturnValues documented <a href="http://msdn.microsoft.com/en-us/library/aa390890(v=vs.85).aspx" rel="noreferrer">here</a>)

21,421,526

Javascript/jQuery - parse hashtags in a string using regex, except for anchors in URLs

I've looked at a couple of other possible solutions on SO but didn't see any that were doing what I was doing. Currently I have been able to parse a string and detect hash tags with the following code: <pre><code>mystring = mystring.replace(/(^|\W)(#[a-z\d][\w-]*)/ig, "$1$2").replace(/\s*$/, ""); </code></pre> And this successfully detects all sorts of #hashtags. However it also detects anchors in URLs, such as: <a href="http://www.example.com/#anchor" rel="noreferrer">http://www.example.com/#anchor</a> - I can't work out how to modify what I have to exclude anchors while keeping it flexible. Thanks

21,422,891

3

null

2014-01-29 03:35:40.073 UTC

9

2017-06-18 03:17:58.883 UTC

2014-01-29 03:42:39.843 UTC

null

1,054,245

null

2,981,412

null

1

16

javascript|jquery|regex|parsing

19,714

Here's a regex to match hashtag(#) if it has a space before it or it's beginning of string.. like so: <pre><code>(^|\s)(#[a-z\d-]+) </code></pre> Working regex example: <a href="http://regex101.com/r/pJ4wC5" rel="noreferrer">http://regex101.com/r/pJ4wC5</a> Javascript: <pre><code>var string = '#hello This is an #example of some text with #hash-tags - http://www.example.com/#anchor but dont want the link'; string = string.replace(/(^|\s)(#[a-z\d-]+)/ig, "$1$2"); console.log(string); </code></pre> Output: <pre><code>#hello This is an #example of some text with #hash-tags - http://www.example.com/#anchor but dont want the link </code></pre>

21,778,632

Put two textviews side by side in a layout

I have two textviews i need to put side by side in a layout and I have to respect two rules: <ul> <li>Textview2 needs always to be displayed entirely.</li> <li>Textview1 has to be cropped if there is no enough room in the layout.</li> </ul> Examples: Textview1|textview2 Teeeeeeeeeeeeeeeeeeeextview1...|textview2 Any ideas? The only way I found that might work is to create a drawable with the text of textview2 and affect it as coumpoundDrawable to textview1.

21,779,017

4

3

null

2014-02-14 11:50:36.187 UTC

8

2020-05-13 04:17:47.283 UTC

2014-02-14 12:56:37.553 UTC

null

1,176,435

null

1,176,435

null

1

25

android|textview

39,186

Wrap the two TextViews in a LinearLayout. Assign a layout weight of 0 to textview2 and a layout weight of 1 to textview2. See here for more info: <a href="http://developer.android.com/guide/topics/ui/layout/linear.html#Weight">Linear Layout Weight</a> If you play with the example below you'll see that the LinearLayout first allocates space to textview2 (with weight 0) and then allocates whatever remains to textview1 (with weight 1). If there is insufficient space to accommodate both TextViews, textview1 will be ellipsized first. In the example below textview2 will only ever become ellipsized if the LinearLayout is smaller than the size of textview2 itself. Assign a specific layout width to the FrameLayout and see what happens. <pre><code><?xml version="1.0" encoding="utf-8"?> <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="200dp" android:layout_height="match_parent" android:background="#FF0000FF"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:background="#FFFF0000" android:ellipsize="end" android:maxLines="1" android:text="textview1" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="0" android:background="#FF00FF00" android:ellipsize="end" android:maxLines="1" android:text="textview2" /> </LinearLayout> </FrameLayout> </code></pre>

2,161,052

How to create an "inkblot" chart with R?

How can I create a chart like <a href="http://junkcharts.typepad.com/junk_charts/2010/01/leaving-ink-traces.html" rel="noreferrer">http://junkcharts.typepad.com/junk_charts/2010/01/leaving-ink-traces.html</a> where several time series (one per country) are displayed horizontally as symmetric areas? I think if I could display one time series in this way, it is easy to generalize to several using mfrow. Sample data: <pre><code>#Solar energy production in Europe, by country (EC),(1 000 toe) Country,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007 Belgium,1,1,1,1,1,1,2,2,3,3,3,5 Bulgaria,-,-,-,-,-,-,-,-,-,-,-,- Czech Republic,0,0,0,0,0,0,0,0,2,2,3,4 Denmark,6,7,7,8,8,8,9,9,9,10,10,11 Germany (including ex-GDR from 1991),57,70,83,78,96,150,184,216,262,353,472,580 Estonia,-,-,-,-,-,-,-,-,-,-,-,- Ireland,0,0,0,0,0,0,0,0,0,0,1,1 Greece,86,89,93,97,99,100,99,99,101,102,109,160 Spain,26,23,26,29,33,38,43,48,58,65,83,137 France,15,16,17,18,26,19,19,18,19,22,29,37 Italy,8,9,11,11,12,14,16,18,21,30,38,56 Cyprus,32,33,34,35,35,34,35,36,40,41,43,54 Latvia,-,-,-,-,-,-,-,-,-,-,-,- Lithuania,-,-,-,-,-,-,-,-,-,-,-,- Luxembourg (Grand-Duché),0,0,0,0,0,0,0,0,1,2,2,2 Hungary,0,0,0,0,0,1,2,2,2,2,2,3 Netherlands,6,7,8,10,12,14,16,19,20,22,22,23 Austria,42,48,55,58,64,69,74,80,86,92,101,108 Poland,0,0,0,0,0,0,0,0,0,0,0,0 Portugal,16,16,17,18,18,19,20,21,21,23,24,28 Romania,0,0,0,0,0,0,0,0,0,0,0,0 Slovenia,-,-,-,-,-,-,-,-,-,-,-,- Slovakia,0,0,0,0,0,0,0,0,0,0,0,0 Finland,0,0,0,0,1,1,1,1,1,1,1,1 Sweden,4,4,5,5,5,6,4,5,5,6,6,9 United Kingdom,6,6,7,7,11,13,16,20,25,30,37,46 Croatia,0,0,0,0,0,0,0,0,0,0,0,1 Turkey,159,179,210,236,262,287,318,350,375,385,402,420 Iceland,-,-,-,-,-,-,-,-,-,-,-,- Norway,0,0,0,0,0,0,0,0,0,0,0,0 Switzerland,18,19,21,23,24,26,23,24,25,26,28,30 #-='Not applicable' or 'Real zero' or 'Zero by default' :=Not available " #Source of Data:,Eurostat, http://spreadsheets.google.com/ccc?key=0Agol553XfuDZdFpCQU1CUVdPZ3M0djJBSE1za1NGV0E&hl=en_GB #Last Update:,30.04.2009 #Date of extraction:,17 Aug 2009 07:41:12 GMT, http://epp.eurostat.ec.europa.eu/tgm/table.do?tab=table&init=1&plugin=1&language=en&pcode=ten00082 </code></pre>

2,161,338

4

1

null

2010-01-29 09:43:52.26 UTC

10

2015-09-22 18:17:35.75 UTC

2010-01-30 21:14:13.507 UTC

null

121,332

null

216,064

null

1

11

graphics|r

1,936

You can use <code>polygon</code> in base graphics, for instance <pre><code>x <- seq(as.POSIXct("1949-01-01", tz="GMT"), length=36, by="months") y <- rnorm(length(x)) plot(x, y, type="n", ylim=c(-1,1)*max(abs(y))) polygon(c(x, rev(x)), c(y, -rev(y)), col="cornflowerblue", border=NA) </code></pre> Update: Using <code>panel.polygon</code> from <code>lattice</code>: <pre><code>library("lattice") library("RColorBrewer") df <- data.frame(x=rep(x,3), y=rnorm(3*length(x)), variable=gl(3, length(x))) p <- xyplot(y~x|variable, data=df, ylim=c(-1,1)*max(abs(y)), layout=c(1,3), fill=brewer.pal(3, "Pastel2"), panel=function(...) { args <- list(...) print(args) panel.polygon(c(args$x, rev(args$x)), c(args$y, -rev(args$y)), fill=args$fill[panel.number()], border=NA) }) print(p) </code></pre>

2,054,218

Formatting floats in Objective C

I need to format a float (catchy title, he?) to 2 decimal places, but only if those decimal places have values that aren't zero. Example: I have a NSTextField named 'answer', after I do some math with a couple of floats, I want to assign my 'answerFloat' variable to the 'answer' NSTextField. So far I've got: <pre><code>[answer setStringValue:[NSString stringWithFormat:@"%.2f", answerFloat]]; </code></pre> But that sets something like 45 to 45.00. I want whole numbers to be displayed without the zeroes, and any decimal numbers to be displayed with their respective decimal values. Do I need to run some kind of check before giving it to stringWithFormat? Or does NSString offer a way to handle this?

2,054,276

4

0

null

2010-01-13 03:39:22.12 UTC

7

2012-05-09 19:08:47.107 UTC

null

44,390

null

177,218

null

1

33

objective-c|string|cocoa|formatting|floating-point

43,598

Have you tried the <code>%g</code> format specifier? <pre><code>NSLog([NSString stringWithFormat:@"%g, %g", 45.0, 45.5]); </code></pre> <blockquote> 2010-01-12 19:54:38.651 foo[89884:10b] 45, 45.5 </blockquote>

1,833,581

When to use intern() on String literals

I see a lot of legacy code like this: <pre><code>class A { public static final String CONSTANT = "value".intern(); ... } </code></pre> I don't see any reason for the intern(), as in the Javadoc one can read: "All literal strings and string-valued constant expressions are interned." Is there some intent of this, maybe in past revisions of the language?

1,833,726

4

2

null

2009-12-02 15:21:27.983 UTC

17

2017-08-20 22:10:45.66 UTC

2013-08-22 07:25:39.45 UTC

null

545,127

null

191,446

null

1

38

java|string|string-interning

5,889

This is a technique to ensure that <code>CONSTANT</code> is not actually a constant. When the Java compiler sees a reference to a final static primitive or String, it inserts the actual value of that constant into the class that uses it. If you then change the constant value in the defining class but don't recompile the using class, it will continue to use the old value. By calling intern() on the "constant" string, it is no longer considered a static constant by the compiler, so the using class will actually access the defining class' member on each use. <hr> JLS citations: <ul> <li>definition of a compile-time constant: <a href="http://docs.oracle.com/javase/specs/jls/se6/html/expressions.html#5313" rel="noreferrer">http://docs.oracle.com/javase/specs/jls/se6/html/expressions.html#5313</a></li> <li>implication of changes to a compile-time constant (about halfway down the page): <a href="http://docs.oracle.com/javase/specs/jls/se6/html/binaryComp.html#45139" rel="noreferrer">http://docs.oracle.com/javase/specs/jls/se6/html/binaryComp.html#45139</a></li> </ul>

2,251,699

SQLite "INSERT OR REPLACE INTO" vs. "UPDATE ... WHERE"

I've never seen the syntax <code>INSERT OR REPLACE INTO names (id, name) VALUES (1, "John")</code> used in SQL before, and I was wondering why it's better than <code>UPDATE names SET name = "John" WHERE id = 1</code>. Is there any good reason to use one over the other. Is this syntax specific to SQLite?

2,251,708

4

0

null

2010-02-12 12:18:03.15 UTC

19

2022-07-27 15:02:00.533 UTC

2018-05-24 17:32:57.683 UTC

null

42,223

null

74,118

null

1

72

sqlite|upsert

136,402

UPDATE will not do anything if the row does not exist. Where as the INSERT OR REPLACE would insert if the row does not exist, or replace the values if it does.

1,961,255

Rename files using a regex with bash

<blockquote> Possible Duplicate: <a href="https://stackoverflow.com/questions/1086502/rename-multiple-files-at-once-in-unix">rename multiple files at once in unix</a> </blockquote> I would like to rename all files from a folder using a regex (add a name to the end of name) and move to another folder. It my opinion, it should be looking like this: <pre><code>mv -v ./images/*.png ./test/*test.png </code></pre> but it does not work. Can anyone suggest me a solution?

1,961,270

4

2

null

2009-12-25 14:42:06.173 UTC

20

2018-06-24 14:47:33.513 UTC

null

123,109

null

193,718

null

1

77

regex|bash

101,936

Try this: <pre><code>for x in *.png;do mv $x test/${x%.png}test.png;done </code></pre>

2,176,991

How would I display a TIFF images in all web browsers?

How do I handle <a href="http://en.wikipedia.org/wiki/Tagged_Image_File_Format" rel="nofollow noreferrer">TIFF</a> images in HTML pages? I have tried using the embed tag, object id, img, etc. But, I am unable to display the TIFF image in the HTML page. I am not using Java, .NET, or any other alternatives in my project. UPDATE: Safari supports TIFF image loading. How can I load TIFF images in other browsers (IE, Mozilla, Firefox, etc.)?

2,177,012

4

0

null

2010-02-01 13:38:48.19 UTC

18

2021-12-06 13:55:05.15 UTC

null

13,420,795

null

144,300

null

1

101

html|image|tiff

219,474

This comes down to browser image support; it looks like the only mainstream browser that supports tiff is Safari: <a href="http://en.wikipedia.org/wiki/Comparison_of_web_browsers#Image_format_support" rel="noreferrer">http://en.wikipedia.org/wiki/Comparison_of_web_browsers#Image_format_support</a> Where are you getting the tiff images from? Is it possible for them to be generated in a different format? If you have a static set of images then I'd recommend using something like <a href="http://www.corel.com/servlet/Satellite/gb/en/Product/1184951547051" rel="noreferrer">PaintShop Pro</a> to batch convert them, changing the format. If this isn't an option then there might be some mileage in looking for a pre-written Java applet (or another browser plugin) that can display the images in the browser.

10,690,466

Redirect to a hash from the controller using "RedirectToAction"

Hello I want to return an anchor from Mvc Controller Controller name= DefaultController; <pre><code>public ActionResult MyAction(int id) { return RedirectToAction("Index", "region") } </code></pre> So that the url when directed to index is <pre><code>http://localhost/Default/#region </code></pre> So that <pre><code><a href=#region>the content should be focus here</a> </code></pre> I am not asking if you can do it like this: <a href="https://stackoverflow.com/questions/7904835/how-can-i-add-an-anchor-tag-to-my-url">How can I add an anchor tag to my URL?</a>

10,690,511

4

2

null

2012-05-21 18:19:03.163 UTC

17

2018-09-13 14:10:39.98 UTC

2017-05-23 12:02:40.56 UTC

null

-1

null

475,337

null

1

94

asp.net-mvc|asp.net-mvc-3|asp.net-mvc-4

26,314

I found this way: <pre><code>public ActionResult MyAction(int id) { return new RedirectResult(Url.Action("Index") + "#region"); } </code></pre> You can also use this verbose way: <pre><code>var url = UrlHelper.GenerateUrl( null, "Index", "DefaultController", null, null, "region", null, null, Url.RequestContext, false ); return Redirect(url); </code></pre> <a href="http://msdn.microsoft.com/en-us/library/ee703653.aspx" rel="noreferrer">http://msdn.microsoft.com/en-us/library/ee703653.aspx</a>

28,807,774

PHP - Add one week to a user defined date

There's more than likely going to be a duplicate for this question, but I'm struggling to find a precise answer for my problem. The user enters a starting date for a client's rent (on a form on a previous page), then it needs to generate the next date (one week later) that the client is required to pay. For example: <pre><code>$start_date = $_POST['start_date']; $date_to_pay = ??? </code></pre> Lets say the user enters in 2015/03/02: <pre><code>$start_date = "2015/03/02"; </code></pre> I then want the date to pay to be equal to a week later (2015/03/09): <pre><code>$date_to_pay = "2015/03/09"; </code></pre> How would one go around doing this? Many thanks.

28,807,856

5

3

null

2015-03-02 10:41:26.56 UTC

1

2020-06-17 05:32:58.677 UTC

null

4,453,899

null

1

15

php|html

39,436

You can try this <pre><code>$start_date = "2015/03/02"; $date = strtotime($start_date); $date = strtotime("+7 day", $date); echo date('Y/m/d', $date); </code></pre>

26,109,851

Code signing is required for product type Unit Test Bundle in SDK iOS 8.0

Getting <blockquote> Code signing is required for product type 'Unit Test Bundle' in SDK 'iOS 8.0' </blockquote> My app target is code signing just fine - but my test target is not. I bought a new computer, created a new development certificate from the computer, updated the provisioning profile accordingly, installed both, but can't get past this code signing error. Any way of wiping all certs/profiles locally so I can reinstall? Probably some kind of bug.

26,372,701

11

1

null

2014-09-29 22:21:50.497 UTC

24

2017-01-03 09:57:06.627 UTC

null

1,543,216

null

1

129

ios|objective-c|xcode

106,013

The problem is the project is under source control and every time I pull the .xcodeproj is updated. And since my provisioning profile is different than the one in source control, the Unit Test target automatically switches to "Do not code sign". So I simply have to set the profile there after each git pull. Apparently if deploying to a device, if there is a unit test target, it must be code signed. Steps: 1) Change target to your test target (AppnameTests) <img src="https://i.stack.imgur.com/khXSU.png" alt="enter image description here"> 2) Make sure "Code Signing Identity" is NOT "Don't Code Sign". Pick a profile to sign with <img src="https://i.stack.imgur.com/R4Ex9.png" alt="enter image description here"> That is all I had to change to get it to work.

26,091,744

JSHint thinks Jasmine functions are undefined

I've got a Grunt setup which uses Karma+Jasmine and JSHint. Whenever I run JSHint on my spec file, I get a series of "undefined" errors, most of which are for Jasmine's built-in functions. For example: <pre><code>Running "jshint:test" (jshint) task js/main.spec.js 3 |describe("loadMatrix()", function() { ^ 'describe' is not defined. 4 | it("should not assign a value if no arg is passed.", function() { ^ 'it' is not defined. </code></pre> (I also get some undefined errors for the variables and functions from the JS file that my spec is meant to test against, but I'm not sure why that is and it may be a separate issue.) My Karma config file has <code>frameworks: [ "jasmine" ]</code> in it, I don't have any globals set for JSHint, and I don't have a <code>.jshintrc</code> file since I'm configuring it in Grunt. I did try adding Jasmine's functions as JSHint globals in my Gruntfile at one point, but setting them as either <code>true</code> or <code>false</code> didn't make a difference—the errors still persisted when JSHint ran. What am I missing? I can't seem to do anything to get JSHint to skip definition checking for Jasmine's functions in my spec file.

26,133,415

4

2

null

2014-09-29 02:29:02.523 UTC

5

2015-12-11 13:14:53.74 UTC

null

user1282270

null

1

29

javascript|gruntjs|jasmine|karma-runner|jshint

12,560

MINOR CORRECTION - there should be "" around predef in the .jshintrc file. Fixed by adding this to the <code>jshint</code> options in my <code>Gruntfile.coffee</code>: <pre><code>predef: [ "jasmine" "describe" "xdescribe" "before" "beforeEach" "after" "afterEach" "it" "xit" "it" "inject" "expect" "spyOn" ] </code></pre> <code>.jshintrc</code>: <pre><code>"predef": [ "jasmine", "describe", "xdescribe", "before", "beforeEach", "after", "afterEach", "it", "xit", "it", "inject", "expect", "spyOn", ] </code></pre>

7,523,741

How do you check if a website is online in C#?

I want my program in C# to check if a website is online prior to executing, how would I make my program ping the website and check for a response in C#?

7,523,808

5

4

null

2011-09-23 02:47:48.503 UTC

13

2021-02-08 06:19:18.933 UTC

null

763,725

null

1

39

c#

65,405

You have use <code>System.Net.NetworkInformation.Ping</code> see below. <pre><code>var ping = new System.Net.NetworkInformation.Ping(); var result = ping.Send("www.google.com"); if (result.Status != System.Net.NetworkInformation.IPStatus.Success) return; </code></pre>

7,671,220

Creating method dynamically, and executing it

Background: I want to define few <code>static</code> methods in C# , and generate IL code as byte array, from one of these methods, selected at runtime (on client), and send the byte array over network to another machine (server) where it should be executed after re-generating the IL code from the byte array. My Attempt: (<a href="http://en.wikipedia.org/wiki/Proof_of_concept">POC</a>) <pre><code>public static class Experiment { public static int Multiply(int a, int b) { Console.WriteLine("Arguments ({0}, {1})", a, b); return a * b; } } </code></pre> And then I get the IL code of the method body, as: <pre><code>BindingFlags flags = BindingFlags.Public | BindingFlags.Static; MethodInfo meth = typeof(Experiment).GetMethod("Multiply", flags); byte[] il = meth.GetMethodBody().GetILAsByteArray(); </code></pre> So far I didn't create anything dynamically. But I've IL code as byte array, and I want to create an assembly, then a module in it, then a type, then a method - all dynamically. When creating the method body of the dynamically created method, I use the IL code which I got using reflection in the above code. The code-generation code is as follows: <pre><code>AppDomain domain = AppDomain.CurrentDomain; AssemblyName aname = new AssemblyName("MyDLL"); AssemblyBuilder assemBuilder = domain.DefineDynamicAssembly( aname, AssemblyBuilderAccess.Run); ModuleBuilder modBuilder = assemBuilder.DefineDynamicModule("MainModule"); TypeBuilder tb = modBuilder.DefineType("MyType", TypeAttributes.Public | TypeAttributes.Class); MethodBuilder mb = tb.DefineMethod("MyMethod", MethodAttributes.Static | MethodAttributes.Public, CallingConventions.Standard, typeof(int), // Return type new[] { typeof(int), typeof(int) }); // Parameter types mb.DefineParameter(1, ParameterAttributes.None, "value1"); // Assign name mb.DefineParameter(2, ParameterAttributes.None, "value2"); // Assign name //using the IL code to generate the method body mb.CreateMethodBody(il, il.Count()); Type realType = tb.CreateType(); var meth = realType.GetMethod("MyMethod"); try { object result = meth.Invoke(null, new object[] { 10, 9878 }); Console.WriteLine(result); //should print 98780 (i.e 10 * 9878) } catch (Exception e) { Console.WriteLine(e.ToString()); } </code></pre> But instead of printing <code>98780</code> on the output window, it throws an exception saying, <blockquote> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.TypeLoadException: Could not load type 'Invalid_Token.0x0100001E' from assembly 'MyDLL, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'.      at MyType.MyMethod(Int32 value1, Int32 value2) [...] </blockquote> Please help me figuring out the cause of the error, and how to fix it.

8,194,550

6

2

null

2011-10-06 07:14:01.48 UTC

12

2011-11-25 09:33:25.047 UTC

2011-11-19 14:06:29.283 UTC

null

415,784

null

415,784

null

1

27

c#|reflection|cil|reflection.emit|il

9,568

Run ildasm.exe on an arbitrary assembly. Use View + Show token values and look at some disassembled code. You'll see that the IL contains references to other methods and variables through a number. The number is an index into the metadata tables for an assembly. Perhaps you now see the problem, you cannot transplant a chunk of IL from one assembly to another unless that target assembly has the same metadata. Or unless you replace the metadata token values in the IL with values that match the metadata of the target assembly. This is wildly impractical of course, you essentially end up duplicating the assembly. Might as well make a copy of the assembly. Or for that matter, might as well use the existing IL in the original assembly. You need to think this through a bit, it is pretty unclear what you actually try to accomplish. The System.CodeDom and Reflection.Emit namespaces are available to dynamically generate code.

14,231,170

SELECT with LIMIT in Codeigniter

I have a site develop in Codeigniter, and in my model I have a function like this: <pre><code>function nationList($limit=null, $start=null) { if ($this->session->userdata('language')=="it") $this->db->select('nation.id, nation.name_it as name'); if ($this->session->userdata('language')=="en") $this->db->select('nation.id, nation.name_en as name'); $this->db->from('nation'); $this->db->order_by("name", "asc"); $this->db->limit($limit, $start); $query = $this->db->get(); $nation = array(); foreach ($query->result() as $row) array_push($nation, $row); return $nation; } </code></pre> And if into my controller I call the function without limit and start doesn't return result like this: <pre><code>$data["nationlist"] = $this->Nation_model->nationList(); </code></pre> Instead if I set limit and start works! If limit and start are null, Why doesn't return result? I don't want to make a second function or a control if limit and start are null. How can I solve this when limit and start are null without a control or a second function to make useful the code and more efficient?

14,231,248

3

7

null

2013-01-09 08:37:54.9 UTC

3

2020-07-15 08:19:59.75 UTC

null

1,427,138

null

1

20

php|sql|codeigniter

186,196

Try this... <pre><code>function nationList($limit=null, $start=null) { if ($this->session->userdata('language') == "it") { $this->db->select('nation.id, nation.name_it as name'); } if ($this->session->userdata('language') == "en") { $this->db->select('nation.id, nation.name_en as name'); } $this->db->from('nation'); $this->db->order_by("name", "asc"); if ($limit != '' && $start != '') { $this->db->limit($limit, $start); } $query = $this->db->get(); $nation = array(); foreach ($query->result() as $row) { array_push($nation, $row); } return $nation; } </code></pre>

14,106,248

Yeoman inside ExpressJS

I'd still like to try to get an example running w/ Yeoman and Express. I tried the following and it worked "okay", but I'm stuck merging the routes. (over simplified for readability) <pre><code>mkdir test cd test express mkdir app cd app mkdir js cd js yeoman angular </code></pre> Then I changed "output:dist" to "output:../../public" in the Gruntfile.js Now, both servers run okay on their own (e.g. yeoman server and node app.js). I can also run 'yeoman build' now to output the minified JS to /public in the express app. I'm a bit fuzzy on how the routes might merge? I would like / to pull up the Angular route and not the express route, etc. The angular-express-seed examples on github look okay, but I would still like Yeoman integrated into the project. Any suggestions would be appreciated.

14,112,102

6

0

null

2012-12-31 21:38:30.817 UTC

15

2013-11-20 14:00:52.017 UTC

null

1,637,301

null

1

24

node.js|angularjs|express|yeoman

8,269

I would recommend this structure for yeoman + expressjs: <pre><code>mkdir app cd app yeoman angular express . </code></pre> So your dir tree should look like this: <pre><code>. ├── app │ ├── 404.html │ ├── favicon.ico │ ├── index.html │ ├── robots.txt │ ├── scripts │ │ ├── controllers │ │ │ └── main.js │ │ ├── vendor │ │ │ ├── angular.js │ │ │ ├── angular.min.js │ │ │ ├── es5-shim.min.js │ │ │ └── json3.min.js │ │ └── yeoman-test.js │ ├── styles │ │ └── main.css │ └── views │ └── main.html ├── app.js ├── Gruntfile.js ├── package.json ├── public │ ├── images │ ├── javascripts │ └── stylesheets │ └── style.css ├── routes │ ├── index.js │ └── user.js ├── test │ ├── lib │ │ └── angular-mocks.js │ └── spec │ └── controllers │ └── main.js ├── testacular.conf.js └── views ├── index.jade └── layout.jade </code></pre> You can remove the now redundant <code>public</code> directory (we're going to serve from <code>app</code> instead): <pre><code>rm -rf public </code></pre> And now in <code>app.js</code>, you need to change which dir to serve static files from. Change this line: <pre><code>app.use(express.static(path.join(__dirname, 'public'))); </code></pre> to this: <pre><code>app.use(express.static(path.join(__dirname, 'app'))); </code></pre> And that should be about it. There's one careat in that you now have two "index" files -- one in <code>views/index.jade</code>, and the other in <code>app/index.html</code>. Removing the <code>app/index.html</code> currently breaks yeoman, so my advice is to get rid of the route for <code>app/index.jade</code> and just make edits to <code>index.html</code>. Hope this helps!

14,161,415

mysql process cannot be stopped

I have recently installed 5.5.28-29.2 Percona Server (GPL), Release 29.2 in a Ubuntu 12.04 OS Desktop. I have tried to stop the server using different methods: <pre><code>- sudo /etc/init.d/mysql stop - sudo kill -9 pid - mysqladmin -u root -p shutdown </code></pre> All this methods stop the process, however it starts up automatically after it dies. I have checked syslog (/var/log/syslog/) and always shows me the next trace: <pre><code>Jan 4 17:50:44 kernel: [ 1915.494219] init: mysql main process (17311) killed by KILL signal Jan 4 17:50:44 kernel: [ 1915.494245] init: mysql main process ended, respawning Jan 4 17:50:44 kernel: [ 1915.500025] type=1400 audit(1357318244.557:48): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/mysqld" pid=18458 comm="apparmor_parser" Jan 4 17:50:46 /etc/mysql/debian-start[18501]: Upgrading MySQL tables if necessary. Jan 4 17:50:46 /etc/mysql/debian-start[18504]: /usr/bin/mysql_upgrade: the '--basedir' option is always ignored Jan 4 17:50:46 /etc/mysql/debian-start[18504]: Looking for 'mysql' as: /usr/bin/mysql Jan 4 17:50:46 /etc/mysql/debian-start[18504]: Looking for 'mysqlcheck' as: /usr/bin/mysqlcheck Jan 4 17:50:46 /etc/mysql/debian-start[18504]: This installation of MySQL is already upgraded to 5.5.28, use --force if you still need to run mysql_upgrade Jan 4 17:50:46 /etc/mysql/debian-start[18515]: Checking for insecure root accounts. Jan 4 17:50:46 /etc/mysql/debian-start[18520]: Triggering myisam-recover for all MyISAM tables </code></pre> Do you know the reason why the process restarts automatically ? Thank you in advance!!

15,960,688

7

0

null

2013-01-04 16:58:11.42 UTC

8

2017-10-25 12:41:53.37 UTC

null

1,949,163

null

1

30

mysql|ubuntu|percona

60,952

I was having this exact same problem. Running the <code>kill</code> command would kill the process, but in my case it would keep popping up again under a different process ID. The only way I could figure out how to stop it for good was this: <pre><code>sudo stop mysql </code></pre> Hope that helps. Source: <a href="http://www.itfromscratch.com/how-to-stop-the-percona-mysql-server/" rel="noreferrer">http://www.itfromscratch.com/how-to-stop-the-percona-mysql-server/</a>

14,104,865

How can I use Debug.Write with dynamic data?

I am doing some scripting of Adobe InDesign. Their COM implementation is really designed for VB, so it's not rigorous about reporting data types, occasionally necessitating the use of dynamics. I'm trying to debug a chunk of code that looks like this: <pre><code>foreach (dynamic pi in current.PageItems) { if (pi is TextFrame) { var frame = pi as TextFrame; var str = frame.Contents.ToString(); Debug.WriteLine(str); } } </code></pre> This gives me a RuntimeBinderException like this: <blockquote> Additional information: Cannot dynamically invoke method 'WriteLine' because it has a Conditional attribute </blockquote> I get that the problem is that with Conditional attributes, the version of the code that needs to handle the type the dynamic resolves to at runtime might have gotten compiled out, but I'm explicitly converting what I want to debug to a string, so I don't see why this is still happening. How can I work around this problem?

14,104,895

3

0

null

2012-12-31 18:17:52.917 UTC

null

2012-12-31 18:23:58.103 UTC

null

9,279

null

1

33

c#|visual-studio-2010

12,058

You're being bitten by your use of <code>var</code> here, is my guess. I'm assuming that <code>Contents</code> is <code>dynamic</code>. Consider this example: <pre><code>dynamic d = null; var s = d.ToString(); </code></pre> <code>s</code> is <code>dynamic</code> not <code>string</code>. You'll want to cast the object to <code>object</code> before calling <code>ToString</code>, or cast the result of <code>ToString</code> to a <code>string</code>. The point is that at some point, somewhere, you need a cast to get out of the <code>dynamic</code> cycle. This is how I'd solve it: <pre><code>string str = ((object)frame.Contents).ToString(); Debug.WriteLine(str); </code></pre> or <pre><code>string str = frame.Contents.ToString() as string; Debug.WriteLine(str); </code></pre>

14,064,336

ARC and CFRelease?

I'm slightly confused. Everywhere I've read, suggest that when using ARC, you still need to release core foundation objects which makes sense, ARC doesn't manage them. However, I've got a method which uses some CF methods/objects which I used <code>CFRelease</code> on, but that then caused the app to crash. Uncommenting my <code>CFRelease</code>s fixes the issue but then I'm assuming I've got a memory leak? Could someone please explain which things need releasing and which don't, or anything else that's wrong with this code? <pre><code>+ (NSString *) fileExtensionForMimeType:(NSString *)type { CFStringRef mimeType = (__bridge CFStringRef)type; CFStringRef uti = UTTypeCreatePreferredIdentifierForTag(kUTTagClassMIMEType, mimeType, NULL); CFStringRef extension = UTTypeCopyPreferredTagWithClass(uti, kUTTagClassFilenameExtension); NSString *ext = (__bridge NSString *)extension; // CFRelease(mimeType); // CFRelease(uti); // CFRelease(extension); return ext; } </code></pre> The three commented out <code>CFRelease</code> calls fix the issue as mentioned, but I know it's wrong. What should I be doing?

14,064,386

3

null

2012-12-28 03:49:25.287 UTC

9

2013-10-29 22:42:41.673 UTC

2013-01-01 15:05:01.913 UTC

null

231,684

null

764,195

null

1

35

objective-c|ios|cocoa-touch|automatic-ref-counting

12,300

You can't release <code>mimeType</code> because you don't own it. You didn't transfer ownership with the <code>__bridge</code> cast. You should be releasing <code>uti</code> since you have created it. You should also release <code>extension</code> since you created it as well, but that will likely cause issues with <code>ext</code>. Instead, transfer ownership to <code>ext</code>. I'd suggest the following: <pre><code>+ (NSString *) fileExtensionForMimeType:(NSString *)type { CFStringRef mimeType = (__bridge CFStringRef)type; CFStringRef uti = UTTypeCreatePreferredIdentifierForTag(kUTTagClassMIMEType, mimeType, NULL); CFStringRef extension = UTTypeCopyPreferredTagWithClass(uti, kUTTagClassFilenameExtension); NSString *ext = (__bridge_transfer NSString *)extension; // CFRelease(mimeType); // not owned if (uti) CFRelease(uti); // CFRelease(extension); // ownership was transferred return ext; } </code></pre>

14,234,917

Django - How to get self.id when saving a new object?

I have a problem in one of my models. I'm uploading an image, and I want to store the id (pk in the database table) but I need to know at which point Django will have access to <code>self.id</code>. models.py <pre><code>class BicycleAdItemKind(MPTTModel): def url(self, filename): pdb.set_trace() url = "MultimediaData/HelpAdImages/ItemKind/%s/%s" % (self.id, filename) return url def item_kind_image(self): return '<img align="middle" src="/media/%s" height="60px" />' % self.image item_kind_image.allow_tags = True # Bicicleta completa, Componentes para bicicleta, Acessorios para ciclista n_item_kind = models.CharField(max_length=50) parent = TreeForeignKey('self', null=True, blank=True, related_name='children') description = models.TextField(null=True, blank=True) image = models.ImageField(upload_to=url, null=True, blank=True) date_inserted = models.DateTimeField(auto_now_add=True) date_last_update = models.DateTimeField(auto_now=True) def __unicode__(self): return self.n_item_kind class MPTTMeta: order_insertion_by = ['n_item_kind'] </code></pre> The problem is in the <code>url()</code> method; I can only get <code>self.id</code> when updating an object, I don't get the <code>self.id</code> when creating a new object. How can I modify this model so that I get <code>self.id</code> when creating a new object? With the current code, when I'm creating a new object I will end up with a url like: <pre><code>MultimediaData/HelpAdImages/ItemKind/None/somefile.jpg </code></pre> And I need to have something like: <pre><code>MultimediaData/HelpAdImages/ItemKind/35/somefile.jpg </code></pre> Any clues?

14,236,472

6

2

null

2013-01-09 12:10:13.17 UTC

3

2021-05-23 01:11:22.197 UTC

2013-01-09 12:39:46.557 UTC

null

1,442,342

null

488,735

null

1

44

django|django-models|django-mptt

34,955

If it's a new object, you need to save it first and then access self.id, because <pre><code>"There's no way to tell what the value of an ID will be before you call save(), because that value is calculated by your database, not by Django." </code></pre> Check django's document <a href="https://docs.djangoproject.com/en/dev/ref/models/instances/">https://docs.djangoproject.com/en/dev/ref/models/instances/</a>

13,989,319

Resolved color instead of a resource id

Recently I've seen appeared a lint error in my code: <blockquote> Should pass resolved color instead of resource id here: getResources().getColor(R.color.maps_list_background_color) MyClass.java /myapp/android/maps line 107 Android Lint Problem </blockquote> I know how to resolve it the answer is in the error, the thing is I don't get why they have added this error in the linter.

18,738,955

7

2

null

2012-12-21 11:28:55.413 UTC

8

2021-12-06 11:59:00.697 UTC

2015-09-22 17:57:39.303 UTC

null

165,071

null

1,873,110

null

1

54

android|lint

34,458

<blockquote> Methods that take a color in the form of an integer should be passed an RGB triple, not the actual color resource id. You must call getResources.getColor(resource). </blockquote> The function you are calling is expecting an integer that is an RGB triple, not just the id of a color resource. The color resource id is still an integer, but would not produce the color that you are expecting if it was used as the RGB triple. In order to pass it the correct RGB triple for your color, you must resolve it with the <code>getResources().getColor(R.color.example_color)</code> call.

13,998,901

Generating a Random Hex Color in Python

For a Django App, each "member" is assigned a color to help identify them. Their color is stored in the database and then printed/copied into the HTML when it is needed. The only issue is that I am unsure how to generate random <code>Hex</code> colors in python/django. It's easy enough to generate RGB colors, but to store them I would either need to a) make three extra columns in my "Member" model or b) store them all in the same column and use commas to separate them, then, later, parse the colors for the HTML. Neither of these are very appealing, so, again, I'm wondering how to generate random <code>Hex</code> colors in python/django.

14,019,260

18

0

null

2012-12-22 00:25:45.47 UTC

20

2022-07-05 18:33:08.163 UTC

null

1,218,699

null

1

87

python|django

112,332

<pre><code>import random r = lambda: random.randint(0,255) print('#%02X%02X%02X' % (r(),r(),r())) </code></pre>

43,354,242

How do I mock part of a python constructor just for testing?

I am new to Python, so I apologize if this is a duplicate or overly simple question. I have written a coordinator class that calls two other classes that use the kafka-python library to send/read data from Kafka. I want to write a unit test for my coordinator class but I'm having trouble figuring out how to best to go about this. I was hoping that I could make an alternate constructor that I could pass my mocked objects into, but this doesn't seem to be working as I get an error that test_mycoordinator cannot be resolved. Am I going about testing this class the wrong way? Is there a pythonic way I should be testing it? Here is what my test class looks like so far: <pre><code>import unittest from mock import Mock from mypackage import mycoordinator class MyTest(unittest.TestCase): def setUpModule(self): # Create a mock producer producer_attributes = ['__init__', 'run', 'stop'] mock_producer = Mock(name='Producer', spec=producer_attributes) # Create a mock consumer consumer_attributes = ['__init__', 'run', 'stop'] data_out = [{u'dataObjectID': u'test1'}, {u'dataObjectID': u'test2'}, {u'dataObjectID': u'test3'}] mock_consumer = Mock( name='Consumer', spec=consumer_attributes, return_value=data_out) self.coor = mycoordinator.test_mycoordinator(mock_producer, mock_consumer) def test_send_data(self): # Create some data and send it to the producer count = 0 while count < 3: count += 1 testName = 'test' + str(count) self.coor.sendData(testName , None) </code></pre> And here is the class I am trying to test: <pre><code>class MyCoordinator(): def __init__(self): # Process Command Line Arguments using argparse ... # Initialize the producer and the consumer self.myproducer = producer.Producer(self.servers, self.producer_topic_name) self.myconsumer = consumer.Consumer(self.servers, self.consumer_topic_name) # Constructor used for testing -- DOES NOT WORK @classmethod def test_mycoordinator(cls, mock_producer, mock_consumer): cls.myproducer = mock_producer cls.myconsumer = mock_consumer # Send the data to the producer def sendData(self, data, key): self.myproducer.run(data, key) # Receive data from the consumer def getData(self): data = self.myconsumer.run() return data </code></pre>

43,354,425

1

2

null

2017-04-11 19:04:08.343 UTC

6

2018-02-25 10:28:52.56 UTC

2017-04-11 19:11:05.163 UTC

null

5,687,992

null

5,687,992

null

1

28

python|unit-testing|mocking|python-mock

54,768

There is no need to provide a separate constructor. Mocking patches your code to replace objects with mocks. Just use the <a href="https://docs.python.org/3/library/unittest.mock.html#unittest.mock.patch" rel="noreferrer"><code>mock.patch()</code> decorator</a> on your test methods; it'll pass in references to the generated mock objects. Both <code>producer.Producer()</code> and <code>consumer.Consumer()</code> are then mocked out before you create the instance: <pre><code>import mock class MyTest(unittest.TestCase): @mock.patch('producer.Producer', autospec=True) @mock.patch('consumer.Consumer', autospec=True) def test_send_data(self, mock_consumer, mock_producer): # configure the consumer instance run method consumer_instance = mock_consumer.return_value consumer_instance.run.return_value = [ {u'dataObjectID': u'test1'}, {u'dataObjectID': u'test2'}, {u'dataObjectID': u'test3'}] coor = MyCoordinator() # Create some data and send it to the producer for count in range(3): coor.sendData('test{}'.format(count) , None) # Now verify that the mocks have been called correctly mock_producer.assert_has_calls([ mock.Call('test1', None), mock.Call('test2', None), mock.Call('test3', None)]) </code></pre> So the moment <code>test_send_data</code> is called, the <code>mock.patch()</code> code replaces the <code>producer.Producer</code> reference with a mock object. Your <code>MyCoordinator</code> class then uses those mock objects rather than the real code. calling <code>producer.Producer()</code> returns a new mock object (the same object that <code>mock_producer.return_value</code> references), etc. I've made the assumption that <code>producer</code> and <code>consumer</code> are top-level module names. If they are not, provide the full import path. From the <code>mock.patch()</code> documentation: <blockquote> target should be a string in the form <code>'package.module.ClassName'</code>. The target is imported and the specified object replaced with the new object, so the target must be importable from the environment you are calling <code>patch()</code> from. The target is imported when the decorated function is executed, not at decoration time. </blockquote>

9,133,102

How to grab substring before a specified character in JavaScript?

I am trying to extract everything before the ',' comma. How do I do this in JavaScript or jQuery? I tried this and not working.. <pre class="lang-none prettyprint-override"><code>1345 albany street, Bellevue WA 42344 </code></pre> I just want to grab the street address. <pre class="lang-js prettyprint-override"><code>var streetaddress= substr(addy, 0, index(addy, '.')); </code></pre>

9,133,209

12

1

null

2012-02-03 17:49:29.317 UTC

42

2022-07-31 07:31:10.787 UTC

2022-06-29 20:53:05.247 UTC

null

7,941,251

null

1,128,717

null

1

344

javascript|substring|substr

566,606

<pre><code>var streetaddress = addy.substr(0, addy.indexOf(',')); </code></pre> While it's not the best place for definitive information on what each method does (<a href="https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/String" rel="noreferrer">mozilla developer network</a> is better for that) <a href="http://www.w3schools.com/js/default.asp" rel="noreferrer">w3schools.com</a> is good for introducing you to syntax.

44,431,212

YQL: html table is no longer supported

I use YQL to get some html-pages for reading information out of it. Since today I get the return message "html table is no longer supported. See <a href="https://policies.yahoo.com/us/en/yahoo/terms/product-atos/yql/index.htm" rel="noreferrer">https://policies.yahoo.com/us/en/yahoo/terms/product-atos/yql/index.htm</a> for YQL Terms of Use" Example in the console: <a href="https://developer.yahoo.com/yql/console/#h=select+" rel="noreferrer">https://developer.yahoo.com/yql/console/#h=select+</a>*+from+html+where+url%3D%22http%3A%2F%2Fwww.google.de%22 Did Yahoo stop this service? Does anybody know a kind of announcement from Yahoo? I am wondering whether this is simply a bug or whether they really stopped this service... All documentation is still there (html scraping): <a href="https://developer.yahoo.com/yql/guide/yql-select-xpath.html" rel="noreferrer">https://developer.yahoo.com/yql/guide/yql-select-xpath.html</a> , <a href="https://developer.yahoo.com/yql/" rel="noreferrer">https://developer.yahoo.com/yql/</a> A while ago I posted in an YQL forum from Yahoo, now this one does not exist anymore (or at least I do not find it). How can you contact Yahoo to find out whether this service really stopped? Best regards, hebr3

44,472,749

4

5

null

2017-06-08 09:02:09.9 UTC

10

2019-03-25 03:05:26.423 UTC

2017-06-08 16:38:33.047 UTC

null

8,130,292

null

8,130,292

null

1

18

yql

7,931

Thank you very much for your code. It helped me to create my own script to read those pages which I need. I never programmed PHP before, but with your code and the wisdom of the internet I could change your script to my needs. PHP <pre><code><? header('Access-Control-Allow-Origin: *'); //all $url = $_GET['url']; if (substr($url,0,25) != "https://www.xxxx.yy") { echo "Only https://www.xxxx.yy allowed!"; return; } $xpathQuery = $_GET['xpath']; //need more hard check for security, I made only basic function check($target_url){ $check = curl_init(); //curl_setopt( $check, CURLOPT_HTTPHEADER, array("REMOTE_ADDR: $ip", "HTTP_X_FORWARDED_FOR: $ip")); //curl_setopt($check, CURLOPT_INTERFACE, "xxx.xxx.xxx.xxx"); curl_setopt($check, CURLOPT_COOKIEJAR, 'cookiemon.txt'); curl_setopt($check, CURLOPT_COOKIEFILE, 'cookiemon.txt'); curl_setopt($check, CURLOPT_TIMEOUT, 40000); curl_setopt($check, CURLOPT_RETURNTRANSFER, TRUE); curl_setopt($check, CURLOPT_URL, $target_url); curl_setopt($check, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']); curl_setopt($check, CURLOPT_FOLLOWLOCATION, false); $tmp = curl_exec ($check); curl_close ($check); return $tmp; } // get html $html = check($url); $dom = new DOMDocument(); @$dom->loadHTML($html); // apply xpath filter $xpath = new DOMXPath($dom); $elements = $xpath->query($xpathQuery); $temp_dom = new DOMDocument(); foreach($elements as $n) $temp_dom->appendChild($temp_dom->importNode($n,true)); $renderedHtml = $temp_dom->saveHTML(); // return html in json response // json structure: // {html: "xxxx"} $post_data = array( 'html' => $renderedHtml ); echo json_encode($post_data); ?> </code></pre> Javascript <pre><code>$.ajax({ url: "url of service", dataType: "json", data: { url: url, xpath: "//*" }, type: 'GET', success: function() { }, error: function(data) { } }); </code></pre>

19,593,909

git diff sees whole file as changed when it's not

The git diff engine is seeing a whole file as changed when it has not. For example, take this commit: <a href="https://github.com/etiago/phpvirtualbox/commit/626e09958384f479f94011ac3b8301bd497aec51" rel="noreferrer">https://github.com/etiago/phpvirtualbox/commit/626e09958384f479f94011ac3b8301bd497aec51</a> Here we see that the file lib/vboxconnector.php has 2807 additions and 2778 deletions. Additionally, from doing a manual git diff I find that indeed, the whole file is taken in as a deletion (marked with minus) and a whole new file is taken as an addition. However, the files have a lot in common which Git simply ignored. I've looked at <a href="https://stackoverflow.com/questions/12876350/diff-returning-entire-file-for-identical-files">diff returning entire file for identical files</a> but it does not seem to be the case as no white space changes exist between the two commits. Furthermore, taking the two commits of the file (the one in <code>626e09958384f479f94011ac3b8301bd497aec51</code> and <code>626e09958384f479f94011ac3b8301bd497aec51^1</code>) and diff'ing them using Meld, I get the right diff analysis. I've uploaded the two commits of the file to my Dropbox for convenience: <a href="https://dl.dropboxusercontent.com/u/59728/disposables/vboxconnector.php_1" rel="noreferrer">commit_1</a> <a href="https://dl.dropboxusercontent.com/u/59728/disposables/vboxconnector.php_2" rel="noreferrer">commit_2</a>.

19,594,092

1

2

null

2013-10-25 15:29:24.083 UTC

16

2013-10-26 19:44:08.077 UTC

2017-05-23 11:54:46.753 UTC

null

-1

null

392,921

null

1

70

git|git-diff

57,254

In <code>vboxconnector.php_1</code>, every line is terminated by a <code>CR</code> <code>LF</code> sequence. In <code>vboxconnector.php_2</code>, every line is terminated by just <code>LF</code>. Thus every line of the file has changed. Try using <code>git diff --ignore-space-at-eol</code>. You may also find some useful information in <a href="https://stackoverflow.com/q/1889559/77567">the answers to this question</a>.

19,449,615

How to extract the row with min or max values?

With a dataframe like this one: <pre><code> ID Year Temp ph 1 P1 1996 11.3 6.80 2 P1 1996 9.7 6.90 3 P1 1997 9.8 7.10 ... 2000 P2 1997 10.5 6.90 2001 P2 1997 9.9 7.00 2002 P2 1997 10.0 6.93 </code></pre> if I want to know where the max value is I type: <pre><code>which.max(df$Temp) </code></pre> and R print the index of the row, for example 665. So, if I want to read and extract the column with all the related values, I have to type: <pre><code>df[665, ] </code></pre> Isn't there a simpler way to know which ID is related to the max value of a specific column of the df?

19,449,769

4

3

null

2013-10-18 12:25:21.61 UTC

11

2022-06-14 15:43:42.137 UTC

2019-12-03 09:25:30.953 UTC

null

680,068

null

2,509,085

null

1

44

r|max|min

130,570

You can include your <code>which.max</code> call as the first argument to your subsetting call: <pre><code>df[which.max(df$Temp),] </code></pre>

52,221,805

Any way yet to auto-update (or just clear the cache on) a PWA on iOS?

I have been struggling on iOS with something that works easily on Android: Getting my PWA to auto-update when there is a new version. I am not at all sure this is even possible on iOS. I have used vue.js and Quasar to build my app, and everything works out of the box on Android. Here is the (ugly, terrible) way things stand currently on the iOS version: <ol> <li>I can check my own server for the version and compare it against the current one stored in my app (in indexedDB) and throw up a notice that there is a new version. So far so good.</li> <li>Other than having the user MANUALLY CLEAR THE SAFARI CACHE (!!) there is no way I can figure out how to programmatically clear the PWA cache from within the app or force an upload in another way.</li> </ol> So at this point I guess my questions are: <ol> <li>Has ANYONE been able to get a PWA on iOS (11.3 or later) to auto-update when a new version is available?</li> <li>Is there a way to clear the (safari) app cache from within my PWA?</li> </ol> Obviously it is an incredibly awful user experience to notify the user that in order to update they must perform several steps outside of the app to be able to refresh it, but it seems this is where iOS stands at the moment unless I am missing something. Has anyone anywhere made this work?

52,238,757

3

4

null

2018-09-07 11:38:46.547 UTC

12

2022-07-20 04:02:19.32 UTC

2018-09-07 12:36:19.79 UTC

null

209,860

null

209,860

null

1

21

ios|vue.js|progressive-web-apps|quasar-framework

17,370

After weeks and weeks of searching, I finally found a solution: <ol> <li>I add a check for versionstring on the server, and return it to the app as mentioned above. </li> <li>I look for it in localtstorage (IndexedDB) and if I don’t find it, I add it. If I do find it, I compare versions and if there is a newer one on the server, I throw up a dialog. </li> <li>Dismissing this dialog (my button is labeled “update”) runs <code>window.location.reload(true)</code> and then stores the new versionstring in localstorage </li> </ol> Voila! My app is updated! I can't believe it came down to something this simple, I could not find a solution anywhere. Hope this helps someone else! UPDATE SEPT 2019: There were a few problems with the technique above, notably that it was bypassing the PWA service worker mechanisms and that sometimes reload would not immediately load new content (because the current SW would not release the page). I have now a new solution to this that seems to work on all platforms: <pre><code>function forceSWupdate() { if ('serviceWorker' in navigator) { navigator.serviceWorker.getRegistrations().then(function (registrations) { for (let registration of registrations) { registration.update() } }) } } forceSWupdate() </code></pre> And inside my serviceworker I now throw up the dialog if there is an update, and do my <code>location.reload(true)</code> from there. This always results in my app being refreshed immediately (with the important caveat that I have added <code>skipWaiting</code> and <code>clientsClaim</code> directives to my registration). This works on every platform the same, and I can programatically check for the update or wait for the service worker to do it by itself (although the times it checks vary greatly by platform, device, and other unknowable factors. Usually not more than 24 hours though.)

35,005,158

What is the difference between @ComponentScan and @EnableAutoConfiguration in Spring Boot?

What is the difference between the <code>@ComponentScan</code> and <code>@EnableAutoConfiguration</code> annotations in Spring Boot? Is it necessary to add these? My application works very well without these annotations. I just want to understand why we have to add them.

35,006,877

3

null

2016-01-26 00:40:16.35 UTC

38

2019-11-01 18:00:36.247 UTC

2016-01-26 01:25:28.68 UTC

null

2,446,208

null

5,258,516

null

1

88

java|spring|spring-mvc|spring-boot

88,325

<blockquote> What is the difference between the @ComponentScan and @EnableAutoConfiguration annotations in Spring Boot? </blockquote> <a href="http://docs.spring.io/spring-boot/docs/current/api/org/springframework/boot/autoconfigure/EnableAutoConfiguration.html" rel="noreferrer"><code>@EnableAutoConfiguration</code></a> annotation tells Spring Boot to "guess" how you will want to configure Spring, based on the jar dependencies that you have added. For example, If HSQLDB is on your classpath, and you have not manually configured any database connection beans, then Spring will auto-configure an in-memory database. <a href="http://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/context/annotation/ComponentScan.html" rel="noreferrer"><code>@ComponentScan</code></a> tells Spring to look for other components, configurations, and services in the specified package. Spring is able to auto scan, detect and register your beans or components from pre-defined project package. If no package is specified current class package is taken as the root package. <blockquote> Is it necessary to add these? </blockquote> If you need Spring boot to Auto configure every thing for you <a href="http://docs.spring.io/spring-boot/docs/current/api/org/springframework/boot/autoconfigure/EnableAutoConfiguration.html" rel="noreferrer"><code>@EnableAutoConfiguration</code></a> is required. You don't need to add it manually, spring will add it internally for you based on the annotation you provide. Actually the <a href="https://docs.spring.io/spring-boot/docs/current/api/org/springframework/boot/autoconfigure/SpringBootApplication.html" rel="noreferrer"><code>@SpringBootApplication</code></a> annotation is equivalent to using <a href="https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/context/annotation/Configuration.html" rel="noreferrer"><code>@Configuration</code></a>, <a href="http://docs.spring.io/spring-boot/docs/current/api/org/springframework/boot/autoconfigure/EnableAutoConfiguration.html" rel="noreferrer"><code>@EnableAutoConfiguration</code></a> and <a href="http://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/context/annotation/ComponentScan.html" rel="noreferrer"><code>@ComponentScan</code></a> with their default attributes. See also: <ul> <li><a href="https://docs.spring.io/spring-boot/docs/current/reference/html/using-boot-using-springbootapplication-annotation.html" rel="noreferrer">Using the @SpringBootApplication annotation</a></li> <li><a href="https://docs.spring.io/spring-boot/docs/current/reference/html/using-boot-auto-configuration.html" rel="noreferrer">Auto-configuration</a></li> </ul>

928,918

Python File Read + Write

I am working on porting over a database from a custom MSSQL CMS to MYSQL - Wordpress. I am using Python to read a txt file with <code>\t</code> delineated columns and one row per line. I am trying to write a Python script that will read this file (fread) and [eventually] create a MYSSQL ready .sql file with insert statements. A line in the file I'm reading looks something like: <pre><code>1 John Smith Developer http://twiiter.com/johns Chicago, IL </code></pre> My Python script so far: <pre><code>import sys fwrite = open('d:/icm_db/wp_sql/wp.users.sql','w') fread = open('d:/icm_db/users.txt','r') for line in fread: print line; fread.close() fwrite.close() </code></pre> How can I "implode" each line so I can access each column and do business on it? I need to generate multiple MYSQL insert statements per line I read. So... for each line read, I'd generate something like: <pre><code>INSERT INTO `wp_users` (`ID`, `user_login`, `user_name`) VALUES (line[0], 'line[2]', 'line[3]'); </code></pre>

928,943

5

0

null

2009-05-30 03:21:24.653 UTC

null

2009-05-30 04:34:16.407 UTC

2009-05-30 03:32:03.633 UTC

null

74,980

null

74,980

null

1

6

python|file

41,941

Although this is easily doable, it does become easier with the <a href="http://docs.python.org/library/csv.html" rel="noreferrer">csv</a> module. <pre><code>>>> import csv >>> reader = csv.reader(open('C:/www/stackoverflow.txt'), delimiter='\t') >>> for row in reader: ... print row ... ['1', 'John Smith', 'Developer', 'http://twiiter.com/johns', 'Chicago, IL'] ['2', 'John Doe', 'Developer', 'http://whatever.com', 'Tallahassee, FL'] </code></pre> Also, as pointed out, semicolons are not needed in Python. Try to kick that habit :)

497,782

How to convert (transliterate) a string from utf8 to ASCII (single byte) in c#?

I have a string object "with multiple characters and even special characters" I am trying to use <pre><code>UTF8Encoding utf8 = new UTF8Encoding(); ASCIIEncoding ascii = new ASCIIEncoding(); </code></pre> objects in order to convert that string to ascii. May I ask someone to bring some light to this simple task, that is hunting my afternoon. EDIT 1: What we are trying to accomplish is getting rid of special characters like some of the special windows apostrophes. The code that I posted below as an answer will not take care of that. Basically <blockquote> O'Brian will become O?Brian. where ' is one of the special apostrophes </blockquote>

497,842

5

1

null

2009-01-31 00:14:26.48 UTC

9

2018-01-22 18:14:43.903 UTC

2016-07-17 19:41:02.803 UTC

Geo

2,226,988

Geo

47,222

null

1

11

c#|encoding|utf-8|ascii|transliteration

114,191

This was in response to your other question, that looks like it's been deleted....the point still stands. Looks like a <a href="http://www.joelonsoftware.com/articles/Unicode.html" rel="noreferrer">classic Unicode to ASCII issue</a>. The trick would be to find where it's happening. .NET works fine with Unicode, assuming <a href="http://msdn.microsoft.com/en-us/library/system.text.encoding.aspx" rel="noreferrer">it's told it's Unicode</a> to begin with (or left at the default). My guess is that your receiving app can't handle it. So, I'd probably use the <a href="http://msdn.microsoft.com/en-us/library/system.text.asciiencoding.aspx" rel="noreferrer">ASCIIEncoder</a> <a href="http://msdn.microsoft.com/en-us/library/system.text.encoder.fallback.aspx" rel="noreferrer">with</a> an <a href="http://msdn.microsoft.com/en-us/library/system.text.encoderreplacementfallback.aspx" rel="noreferrer">EncoderReplacementFallback</a> with String.Empty: <pre><code>using System.Text; string inputString = GetInput(); var encoder = ASCIIEncoding.GetEncoder(); encoder.Fallback = new EncoderReplacementFallback(string.Empty); byte[] bAsciiString = encoder.GetBytes(inputString); // Do something with bytes... // can write to a file as is File.WriteAllBytes(FILE_NAME, bAsciiString); // or turn back into a "clean" string string cleanString = ASCIIEncoding.GetString(bAsciiString); // since the offending bytes have been removed, can use default encoding as well Assert.AreEqual(cleanString, Default.GetString(bAsciiString)); </code></pre> Of course, in the old days, we'd just loop though and remove any chars <a href="http://asciitable.com/" rel="noreferrer">greater than 127</a>...well, those of us in the US at least. ;)

1,339,601

warning: returning reference to temporary

I have a function like this <pre><code>const string &SomeClass::Foo(int Value) { if (Value < 0 or Value > 10) return ""; else return SomeClass::StaticMember[i]; } </code></pre> I get <code>warning: returning reference to temporary</code>. Why is that? I thought the both values the function returns (reference to const char* "" and reference to a static member) cannot be temporary.

1,339,685

5

0

null

2009-08-27 08:17:26.11 UTC

8

2017-08-21 06:52:16.4 UTC

null

48,461

null

1

28

c++|reference

30,643

This is an example when an unwanted implicit conversion takes place. <code>""</code> is not a <code>std::string</code>, so the compiler tries to find a way to turn it into one. And by using the <code>string( const char* str )</code> constructor it succeeds in that attempt. Now a temporary instance of <code>std::string</code> has been created that will be deleted at the end of the method call. Thus it's obviously not a good idea to reference an instance that won't exist anymore after the method call. I'd suggest you either change the return type to <code>const string</code> or store the <code>""</code> in a member or static variable of <code>SomeClass</code>.

605,325

Where are the schemas for XML files on an Android project?

Where are the schemas (DTD or XML schema) for the XML files used on Android like AndroidManifest.xml or the layouts?

617,716

5

0

null

2009-03-03 06:21:07.567 UTC

7

2021-05-11 16:21:36.027 UTC

null

J. Pablo Fernández

6,068

null

1

37

xml|android|schema|dtd

28,782

The schemas don't exist as an xml file. Schemas are dependent upon what UI classes your program uses. There's a slightly better discussion <a href="http://groups.google.com/group/android-developers/browse_frm/thread/d85b6c2d0e301126/8dbbcb11543672e5?lnk=gst&q=schema+exist#8dbbcb11543672e5" rel="noreferrer">here</a>.

1,222,581

How get the T-SQL code to find duplicates?

MS Access has a button to generate sql code for finding duplicated rows. I don't know if SQL Server 2005/2008 Managment Studio has this. <ol> <li>If it has, please point where</li> <li>If it has not, please tell me how can I have a T-SQL helper for creating code like this.</li> </ol>

1,222,599

5

0

null

2009-08-03 14:12:05.863 UTC

17

2019-02-12 06:29:05.62 UTC

2009-08-03 14:18:19.683 UTC

null

56,338

null

48,465

null

1

62

sql-server-2005|tsql|ssms

95,449

Well, if you have entire rows as duplicates in your table, you've at least not got a primary key set up for that table, otherwise at least the primary key value would be different. However, here's how to build a SQL to get duplicates over a set of columns: <pre><code>SELECT col1, col2, col3, col4 FROM table GROUP BY col1, col2, col3, col4 HAVING COUNT(*) > 1 </code></pre> This will find rows which, for columns col1-col4, has the same combination of values, more than once. For instance, in the following table, rows 2+3 would be duplicates: <pre><code>PK col1 col2 col3 col4 col5 1 1 2 3 4 6 2 1 3 4 7 7 3 1 3 4 7 10 4 2 3 1 4 5 </code></pre> The two rows share common values in columns col1-col4, and thus, by that SQL, is considered duplicates. Expand the list of columns to contain all the columns you wish to analyze this for.

117,006

Prevent people from pushing a git commit with a different author name?

In git, it is up to each user to specify the correct author in their local git config file. When they push to a centralized bare repository, the commit messages on the repository will have the author names that they used when committing to their own repository. Is there a way enforce that a set of known authors for commits are used? The "central" repository will be accessible via ssh. I know that this is complicated by the fact that some people may be pushing commits that were made by others. Of course, you should also only allow people you trust to push to your repositories, but it would be great if there was a way to prevent user error here. Is there a simple solution to this problem in git?

642,182

6

2

null

2008-09-22 19:35:43.77 UTC

17

2016-04-25 14:33:36.763 UTC

null

Tim

4,883

null

1

26

git

10,460

We use the following to prevent accidental unknown-author commits (for example when doing a fast commit from a customer's server or something). It should be placed in .git/hooks/pre-receive and made executable. <pre><code>#!/usr/bin/env python # -*- coding: utf-8 -*- import subprocess from itertools import islice, izip import sys old, new, branch = sys.stdin.read().split() authors = { "John Doe": "[email protected]" } proc = subprocess.Popen(["git", "rev-list", "--pretty=format:%an%n%ae%n", "%s..%s" % (old, new)], stdout=subprocess.PIPE) data = [line.strip() for line in proc.stdout.readlines() if line.strip()] def print_error(commit, author, email, message): print "*" * 80 print "ERROR: Unknown Author!" print "-" * 80 proc = subprocess.Popen(["git", "rev-list", "--max-count=1", "--pretty=short", commit], stdout=subprocess.PIPE) print proc.stdout.read().strip() print "*" * 80 raise SystemExit(1) for commit, author, email in izip(islice(data, 0, None, 3), islice(data, 1, None, 3), islice(data, 2, None, 3)): _, commit_hash = commit.split() if not author in authors: print_error(commit_hash, author, email, "Unknown Author") elif authors[author] != email: print_error(commit_hash, author, email, "Unknown Email") </code></pre>

269,106

Inheriting from a UserControl in WPF

I am fairly new to WPF and I am having a problem with inheriting from a user control. I created a User Control and now I need to inherit from that control and add some more functionality. Has anyone does this sort of thing before? Any help would be greatly appreciated. Thank you

271,407

6

1

null

2008-11-06 15:26:35.437 UTC

4

2022-08-18 14:05:14.573 UTC

null

35,129

null

1

34

wpf|inheritance|user-controls

55,934

AFAIK you cannot inherit the xaml, you can only inherit the code behind. We recently encountered the same problem on our project. The way we ended up solving our problem was to create a usercontrol and adding it to the "child" usercontrol. If that doesnt work/help take a look at this: <a href="https://web.archive.org/web/20200815091447/http://geekswithblogs.net/lbugnion/archive/2007/03/02/107747.aspx%5B1%5D" rel="nofollow noreferrer">https://web.archive.org/web/20200815091447/http://geekswithblogs.net/lbugnion/archive/2007/03/02/107747.aspx[1]</a>

676,663

What do I return if the return type of a method is Void? (Not void!)

Due to the use of Generics in Java I ended up in having to implement a function having <code>Void</code> as return type: <pre><code>public Void doSomething() { //... } </code></pre> and the compiler demands that I return something. For now I'm just returning <code>null</code>, but I'm wondering if that is good coding practice... I'm asking about V‌oid, not v‌oid. The class <code>Void</code>, not the reserved keyword <code>void</code>. I've also tried <code>Void.class</code>, <code>void</code>, <code>Void.TYPE</code>, <code>new Void()</code>, no return at all, but all that doesn't work at all. (For more or less obvious reasons) (See <a href="https://stackoverflow.com/questions/676663/what-do-i-return-if-the-return-type-of-a-method-is-void-not-void/881358#881358">this answer</a> for details) <ul> <li>So what am I supposed to return if the return type of a function is <code>Void</code>? </li> <li>What's the general use of the <code>Void</code> class?</li> </ul>

676,689

6

0

null

2009-03-24 09:31:54.593 UTC

25

2019-03-07 10:11:59.193 UTC

DR

1,233,251

DR

23,368

null

1

119

java|generics|void

68,279

<blockquote> So what am I supposed to return if the return type of a function has to be <code>Void</code>? </blockquote> Use <code>return null</code>. <code>Void</code> can't be instantiated and is merely a placeholder for the <code>Class<T></code> type of <code>void</code>. <blockquote> What's the point of <code>Void</code>? </blockquote> As noted above, it's a placeholder. <code>Void</code> is what you'll get back if you, for example, use reflection to look at a method with a return type of <code>void</code>. (Technically, you'll get back <code>Class<Void></code>.) It has other assorted uses along these lines, like if you want to parameterize a <code>Callable<T></code>. <blockquote> Due to the use of generics in Java I ended up in having to implement this function </blockquote> I'd say that something may be funky with your API if you needed to implement a method with this signature. Consider carefully whether there's a better way to do what you want (perhaps you can provide more details in a different, follow-up question?). I'm a little suspicious, since this only came up "due to the use of generics".

454,355

Security of REST authentication schemes

Background: I'm designing the authentication scheme for a REST web service. This doesn't "really" need to be secure (it's more of a personal project) but I want to make it as secure as possible as an exercise/learning experience. I don't want to use SSL since I don't want the hassle and, mostly, the expense of setting it up. These SO questions were especially useful to get me started: <ul> <li><a href="https://stackoverflow.com/questions/319530/restful-authentication">RESTful Authentication</a></li> <li><a href="https://stackoverflow.com/questions/7551/best-practices-for-securing-a-rest-api-web-service">Best Practices for securing a REST API / web service</a></li> <li><a href="https://stackoverflow.com/questions/409338/examples-of-the-best-soap-rest-rpc-web-apis-and-why-do-you-like-them-and-whats">Examples of the best SOAP/REST/RPC web APIs? And why do you like them? And what’s wrong with them?</a></li> </ul> I'm thinking of using a simplified version of <a href="http://docs.amazonwebservices.com/AmazonS3/2006-03-01/index.html?RESTAuthentication.html" rel="noreferrer">Amazon S3's authentication</a> (I like <a href="http://oauth.net/" rel="noreferrer">OAuth</a> but it seems too complicated for my needs). I'm adding a randomly generated <a href="http://en.wikipedia.org/wiki/Cryptographic_nonce" rel="noreferrer">nonce</a>, supplied by the server, to the request, to prevent replay attacks. To get to the question: Both S3 and OAuth rely on signing the request URL along with a few selected headers. Neither of them sign the request body for POST or PUT requests. Isn't this vulnerable to a man-in-the-middle attack, which keeps the url and headers and replaces the request body with any data the attacker wants? It seems like I can guard against this by including a hash of the request body in the string that gets signed. Is this secure?

10,557,662

6

9

null

2009-01-18 00:12:10.863 UTC

205

2015-01-12 11:41:10.617 UTC

2017-05-23 11:47:16.49 UTC

Hank Gay

-1

dF

3,002

null

1

234

rest|authentication|oauth|amazon-s3|rest-security

109,982

A previous answer only mentioned SSL in the context of data transfer and didn't actually cover authentication. You're really asking about securely authenticating REST API clients. Unless you're using TLS client authentication, SSL alone is NOT a viable authentication mechanism for a REST API. SSL without client authc only authenticates the server, which is irrelevant for most REST APIs because you really want to authenticate the client. If you don't use TLS client authentication, you'll need to use something like a digest-based authentication scheme (like Amazon Web Service's custom scheme) or OAuth 1.0a or even HTTP Basic authentication (but over SSL only). These schemes authenticate that the request was sent by someone expected. TLS (SSL) (without client authentication) ensures that the data sent over the wire remains untampered. They are separate - but complementary - concerns. For those interested, I've expanded on an SO question about <a href="https://stackoverflow.com/questions/14043397/http-basic-authentication-instead-of-tls-client-certificaiton">HTTP Authentication Schemes and how they work</a>.

13,449,743

VBA how to display real time clock in a userform?

So I need to display a real-time clock on my form but I am not sure how. I do know that the code: <pre><code>TimeValue(Now) </code></pre> will give me the current time, but I am not sure how to continually display this on my form. I have an idea which is to put this code inside of a loop as follows: <pre><code>Dim bool As Boolean bool = True Do While bool = True Label1.Caption = TimeValue(Now) Loop </code></pre> However I am not sure where to put this code. Any suggestions would be greatly appreciated!

13,624,358

3

0

null

2012-11-19 08:02:00.697 UTC

1

2020-12-23 09:50:10.42 UTC

2012-11-19 09:21:45.973 UTC

null

641,067

null

1,786,196

null

1

4

vba|excel

46,941

I solved the issue others were having with the given code in the chosen answer. I removed the <code>latesttime</code> line and i changed <code>Label1.caption = Now()</code> to use <code>Time()</code> instead. <pre><code>Sub DisplayCurrentTime() Dim nextSecond As Date nextSecond = DateAdd("s", 1, Now()) Label1.Caption = Time() Application.OnTime _ Procedure:="DisplayCurrentTime", _ EarliestTime:=nextSecond End Sub </code></pre> I then called this in my <code>userform_initialize</code> function. <code>Label1.caption</code> was changed to the appropriate label on my <code>userform</code>.

35,506,851

Get everything before a certain character in SQL

I got the following entries in my database: <pre><code>E01234-1-1 E01234444-1-800000000 </code></pre> I want to trim the entry so I get: <pre><code>E01234-1 E01234444-1 </code></pre> So basically, I want everything before the second '-' regardless of the length How can I solve it? Im using MS SQL SERVER 2012 I am using this but it only bring data from before first hyphen, not second hyphen <pre><code>DECLARE @TABLE TABLE (STRING VARCHAR(100)) INSERT INTO @TABLE (STRING) SELECT 'E01234-1-1' UNION ALL SELECT 'E01234-1-200' UNION ALL SELECT 'E01234-1-3000' UNION ALL SELECT 'E01234-1-40000' UNION ALL SELECT 'E01234-1-500000' UNION ALL SELECT 'E01234-1-6000000' UNION ALL SELECT 'E01234-1-70000000' UNION ALL SELECT 'E01234444-1-800000000' SELECT LEFT(STRING, CHARINDEX('-',STRING)-1) STRIPPED_STRING from @TABLE </code></pre> RETURNS <code> E01234 E01234 E01234 E01234 E01234 E01234 E01234 E01234444</code>

35,507,628

3

null

2016-02-19 13:45:54.487 UTC

1

2018-02-19 18:44:36.563 UTC

2016-02-19 15:10:26.567 UTC

null

4,964,923

null

4,828,104

null

1

6

sql|sql-server|tsql

57,454

If you need the second <code>-</code>: <pre><code>SELECT LEFT(STRING, CHARINDEX('-', @test, CHARINDEX('-', @test) + 1) -1) STRIPPED_STRING FROM @TABLE </code></pre> Explanation: <code>CHARINDEX</code> will get you the index of the <code>-</code> - doing it twice (+ 1) specifies that the outter <code>CHARINDEX</code> should start at the spot after the first <code>-</code> in the string. If you want to chop off everything after the last <code>-</code> instead (regardless of whether it's second or not): <pre><code>SELECT LEFT(STRING, LEN(STRING) - CHARINDEX('-', REVERSE(STRING))) STRIPPED_STRING FROM @table </code></pre> This time, you get the <code>CHARINDEX</code> of the last (reverse the string) <code>-</code>, and subtract that from the length of the whole string.

21,392,954

How to install, verify and update all Octave packages at once?

Today I have installed Octave 3.8 with GUI on my Windows 7 machine. Is there a command that will install all the available Octave packages ? Then I would also like to see a list of all the installed packages, and update them at times. So is there a command that checks for updates of all the installed packages ? Thank you.

21,411,126

3

7

null

2014-01-27 22:23:28.273 UTC

3

2018-04-28 22:41:29.727 UTC

null

3,055,594

null

1

7

octave|package

38,579

It looks as if <code>pkg update</code> will update all your installed packages. See the <a href="http://octave.sourceforge.net/octave/function/pkg.html" rel="noreferrer">documentation on <code>pkg</code></a> for more details. I haven't found a way to install all packages, I am doing them one at a time using <code>pkg install -forge <package_name></code>, which is a bit tedious. It is also giving me errors when trying to install <code>parallel</code>.

17,733,139

Getting the correct timezone offset in Python using local timezone

Ok let me first start by saying my timezone is CET/CEST. The exact moment it changes from CEST to CET (back from DST, which is GMT+2, to normal, which GMT+1, thus) is always the last Sunday of October at 3AM. In 2010 this was 31 October 3AM. Now note the following: <pre><code>>>> import datetime >>> import pytz.reference >>> local_tnz = pytz.reference.LocalTimezone() >>> local_tnz.utcoffset(datetime.datetime(2010, 10, 31, 2, 12, 30)) datetime.timedelta(0, 3600) </code></pre> This is wrong as explained above. <pre><code>>>> local_tnz.utcoffset(datetime.datetime(2010, 10, 30, 2, 12, 30)) datetime.timedelta(0, 7200) >>> local_tnz.utcoffset(datetime.datetime(2010, 10, 31, 2, 12, 30)) datetime.timedelta(0, 7200) </code></pre> Now it is suddenly correct :/ I know there are several questions about this already, but the solution given is always "use localize", but my problem here is that the LocalTimezone does not provide that method. In fact, I have several timestamps in milliseconds of which I need the utcoffset of the local timezone (not just mine, but of anyone using the program). One of these is 1288483950000 or Sun Oct 31 2010 02:12:30 GMT+0200 (CEST) in my timezone. Currently I do the following to get the datetime object: <pre><code>datetime.datetime.fromtimestamp(int(int(millis)/1E3)) </code></pre> and this to get the utcoffset in minutes: <pre><code>-int(local_tnz.utcoffset(date).total_seconds()/60) </code></pre> which, unfortunately, is wrong in many occasions :(. Any ideas? Note: I'm using python3.2.4, not that it should matter in this case. EDIT: Found the solution thanks to @JamesHolderness: <pre><code>def datetimeFromMillis(millis): return pytz.utc.localize(datetime.datetime.utcfromtimestamp(int(int(millis)/1E3))) def getTimezoneOffset(date): return -int(date.astimezone(local_tz).utcoffset().total_seconds()/60) </code></pre> With local_tz equal to tzlocal.get_localzone() from the tzlocal module.

17,775,976

3

null

2013-07-18 20:21:08.943 UTC

15

2020-08-18 22:46:37.053 UTC

2013-07-22 20:56:24.45 UTC

null

1,047,506

null

1,047,506

null

1

27

python|timezone|pytz|timezone-offset

80,612

According to <a href="https://en.wikipedia.org/wiki/European_Summer_Time">Wikipedia</a>, the transition to and from Summer Time occurs at 01:00 UTC. <ul> <li>At 00:12 UTC you are still in Central European Summer Time (i.e. UTC+02:00), so the local time is 02:12.</li> <li>At 01:12 UTC you are back in the standard Central European Time (i.e. UTC+01:00), so the local time is again 02:12.</li> </ul> When changing from Summer Time back to standard time, the local time goes from 02:59 back to 02:00 and the hour repeats itself. So when asking for the UTC offset of 02:12 (local time), the answer could truthfully be either +01:00 or +02:00 - it depends which version of 02:12 you are talking about. On further investigation of the pytz library, I think your problem may be that you shouldn't be using the pytz.reference implementation, which may not deal with these ambiguities very well. Quoting from the comments in the source code: <blockquote> Reference tzinfo implementations from the Python docs. Used for testing against as they are only correct for the years 1987 to 2006. Do not use these for real code. </blockquote> Working with ambiguous times in pytz What you should be doing is constructing a timezone object for the appropriate timezone: <pre><code>import pytz cet = pytz.timezone('CET') </code></pre> Then you can use the utcoffset method to calculate the UTC offset of a date/time in that timezone. <pre><code>dt = datetime.datetime(2010, 10, 31, 2, 12, 30) offset = cet.utcoffset(dt) </code></pre> Note, that the above example will throw an AmbiguousTimeError exception, because it can't tell which of the two versions of 02:12:30 you meant. Fortunately pytz will let you specify whether you want the dst version or the standard version by setting the is_dst parameter. For example: <pre><code>offset = cet.utcoffset(dt, is_dst = True) </code></pre> Note that it doesn't harm to set this parameter on all calls to utcoffset, even if the time wouldn't be ambiguous. According to the documentation, it is only used during DST transition ambiguous periods to resolve that ambiguity. How to deal with timestamps As for dealing with timestamps, it's best you store them as UTC values for as long as possible, otherwise you potentially end up throwing away valuable information. So first convert to a UTC datetime with the datetime.utcfromtimestamp method. <pre><code>dt = datetime.datetime.utcfromtimestamp(1288483950) </code></pre> Then use pytz to localize the time as UTC, so the timezone is attached to the datetime object. <pre><code>dt = pytz.utc.localize(dt) </code></pre> Finally you can convert that UTC datetime into your local timezone, and obtain the timezone offset like this: <pre><code>offset = dt.astimezone(cet).utcoffset() </code></pre> Note that this set of calculations will produce the correct offsets for both 1288483950 and 1288487550, even though both timestamps are represented by 02:12:30 in the CET timezone. Determining the local timezone If you need to use the local timezone of your computer rather than a fixed timezone, you can't do that from pytz directly. You also can't just construct a pytz.timezone object using the timezone name from time.tzname, because the names won't always be recognised by pytz. The solution is to use the <a href="https://pypi.python.org/pypi/tzlocal">tzlocal module</a> - its sole purpose is to provide this missing functionality in pytz. You use it like this: <pre><code>import tzlocal local_tz = tzlocal.get_localzone() </code></pre> The get_localzone() function returns a pytz.timezone object, so you should be able to use that value in all the places I've used the cet variable in the examples above.

21,367,824

How to evalute an exponential tower modulo a prime

I want to find a fast algorithm to evaluate an expression like the following, where P is prime. <pre><code>A ^ B ^ C ^ D ^ E mod P </code></pre> Example: <pre><code>(9 ^ (3 ^ (15 ^ (3 ^ 15)))) mod 65537 = 16134 </code></pre> The problem is the intermediate results can grow much too large to handle.

21,368,784

1

10

null

2014-01-26 19:02:22.853 UTC

10

2017-11-20 00:18:53.747 UTC

2014-03-03 16:55:14.94 UTC

null

916,657

null

1,971,083

null

1

9

algorithm|math|language-agnostic

3,214

Basically the problem reduces to computing <code>a^T mod m</code> for given <code>a</code>, <code>m</code> and a term <code>T</code> that is ridiulously huge. However, we are able to evaluate <code>T mod n</code> with a given modulus <code>n</code> much faster than <code>T</code> . So we ask: "Is there an integer <code>n</code>, such that <code>a^(T mod n) mod m = a^T mod m</code>?" Now if <code>a</code> and <code>m</code> are coprime, we know that <code>n = phi(m)</code> fulfills our condition according to <a href="http://en.wikipedia.org/wiki/Euler%27s_theorem" rel="noreferrer">Euler's theorem</a>: <pre><code> a^T (mod m) = a^((T mod phi(m)) + k * phi(m)) (mod m) (for some k) = a^(T mod phi(m)) * a^(k * phi(m)) (mod m) = a^(T mod phi(m)) * (a^phi(m))^k (mod m) = a^(T mod phi(m)) * 1^k (mod m) = a^(T mod phi(m)) (mod m) </code></pre> If we can compute <code>phi(m)</code> (which is easy to do for example in <code>O(m^(1/2))</code> or if we know the prime factorization of <code>m</code>), we have reduced the problem to computing <code>T mod phi(m)</code> and a simple <a href="https://en.wikipedia.org/wiki/Modular_exponentiation" rel="noreferrer">modular exponentiation</a>. What if <code>a</code> and <code>m</code> are not coprime? The situation is not as pleasant as before, since there might not be a valid <code>n</code> with the property <code>a^T mod m = a^(T mod n) mod m</code> for all <code>T</code>. However, we can show that the sequence <code>a^k mod m</code> for <code>k = 0, 1, 2, ...</code> enters a cycle after some point, that is there exist <code>x</code> and <code>C</code> with <code>x, C < m</code>, such that <code>a^y = a^(y + C)</code> for all <code>y >= x</code>. Example: For <code>a = 2, m = 12</code>, we get the sequence <code>2^0, 2^1, ... = 1, 2, 4, 8, 4, 8, ... (mod 12)</code>. We can see the cycle with parameters <code>x = 2</code> and <code>C = 2</code>. We can find the cycle length via brute-force, by computing the sequence elements <code>a^0, a^1, ...</code> until we find two indices <code>X < Y</code> with <code>a^X = a^Y</code>. Now we set <code>x = X</code> and <code>C = Y - X</code>. This gives us an algorithm with <code>O(m)</code> exponentiations per recursion. What if we want to do better? Thanks to <a href="https://math.stackexchange.com/users/11619/jyrki-lahtonen">Jyrki Lahtonen</a> from Math Exchange for providing <a href="https://math.stackexchange.com/a/653696/15462">the essentials for the following algorithm</a>! Let's evaluate the sequence <code>d_k = gcd(a^k, m)</code> until we find an <code>x</code> with <code>d_x = d_{x+1}</code>. This will take at most <code>log(m)</code> GCD computations, because <code>x</code> is bounded by the highest exponent in the prime factorization of <code>m</code>. Let <code>C = phi(m / d_x)</code>. <a href="https://math.stackexchange.com/a/653696/15462">We can now prove that</a> <code>a^{k + C} = a^k</code> for all <code>k >= x</code>, so we have found the cycle parameters in <code>O(m^(1/2))</code> time. Let's assume we have found <code>x</code> and <code>C</code> and want to compute <code>a^T mod m</code> now. If <code>T < x</code>, the task is trivial to perform with simple modular exponentiation. Otherwise, we have <code>T >= x</code> and can thus make use of the cycle: <pre><code> a^T (mod m) = a^(x + ((T - x) mod C)) (mod m) = a^(x + (-x mod C) + (T mod C) + k*C) (mod m) (for some k) = a^(x + (-x mod C) + k*C) * a^(T mod C) (mod m) = a^(x + (-x mod C)) * a^(T mod C) (mod m) </code></pre> Again, we have reduced the problem to a subproblem of the same form ("compute <code>T mod C</code>") and two simple modular exponentiations. Since the modulus is reduced by at least 1 in every iteration, we get a pretty weak bound of <code>O(P^(1/2) * min (P, n))</code> for the runtime of this algorithm, where <code>n</code> is the height of the stack. In practice we should get a lot better, since the moduli are expected to decrease exponentially. Of course this argument is a bit hand-wavy, maybe some more mathematically-inclined person can improve on it. There are a few edge cases to consider that actually make your life a bit easier: you can stop immediately if <code>m = 1</code> (the result is 0 in this case) or if <code>a</code> is a multiple of <code>m</code> (the result is 0 as well in this case). EDIT: It can be shown that <code>x = C = phi(m)</code> is valid, so as a quick and dirty solution we can use the formula <pre><code>a^T = a^(phi(m) + T mod phi(m)) (mod m) </code></pre> for <code>T >= phi(m)</code> or even <code>T >= log_2(m)</code>.

23,031,754

Declare multiple variables on one line in perl

I found that I can declare two variables in one statement using: <pre><code>my ($a,$b)=(1,2); </code></pre> But I think this syntax may be confusing, for instance, if we had five variables declarations, it would be difficult to see which value belongs to which variable. So I think it would be better if we could use this syntax: <pre><code>my $a=1, $b=2; </code></pre> I wonder, why is this kind of declaration not possible in Perl? And are there any alternatives? (I am trying to avoid repeating <code>my</code> for each declaration like: <code>my $a=1; my $b=2;</code>)

23,031,892

6

3

null

2014-04-12 14:35:06.52 UTC

1

2021-06-16 16:02:59.053 UTC

null

2,173,773

null

1

22

perl

50,597

No. Variables declared by <code>my</code> are only named once the next statement begins. The only way you can assign to the newly created variable is if you assign to the variable it returns. Think of <code>my</code> as <code>new</code> that also declares. As for your particular code, <pre><code>my $a=1, $b=2; </code></pre> means <pre><code>((my $a)=1), ($b=2); </code></pre> Obviously, no good. If you had used variables that weren't already declared[1], you would have gotten a strict error. <hr> <ol> <li><code>$a</code> and <code>$b</code> are predeclared in every namespace to facilitate the use of <code>sort</code>.</li> </ol>

1,371,940

Unit testing: Is it a good practice to have assertions in setup methods?

In unit testing, the setup method is used to create the objects needed for testing. In those setup methods, I like using assertions: I know what values I want to see in those objects, and I like to document that knowledge via an assertion. In a recent post on <a href="https://stackoverflow.com/questions/1368900/unit-testing-is-it-bad-form-to-have-unit-test-calling-other-unit-tests">unit tests calling other unit tests</a> here on stackoverflow, the general feeling seems to be that unit tests should not call other tests: The answer to that question seems to be that you should refactor your setup, so that test cases do not depend on each other. But there isn't much difference in a "setup-with-asserts" and a unit test calling other unit tests. Hence my question: Is it good practice to have assertions in setup methods? EDIT: The answer turns out to be: this is not a good practice in general. If the setup results need to be tested, it is recommended to add a separate test method with the assertions (the answer I ticked); for documenting intent, consider using Java asserts.

1,372,255

5

1

null

2009-09-03 07:38:15.037 UTC

6

2011-03-29 10:15:24.87 UTC

2017-05-23 12:25:26.727 UTC

null

-1

null

165,292

null

1

36

unit-testing|refactoring|fixtures|assertions

11,837

Instead of assertions in the setup to check the result, I used a simple test (a test method along the others, but positionned as first test method). I have seen several advantages: <ul> <li>The setup keeps short and focused, for readability.</li> <li>The assertions are run only once, which is more efficient.</li> </ul> <hr> Usage and discussion : For example, I name the method testSetup(). To use it, when I have some test errors in that class, I know that if testSetup() has an error, I don't need to bother with the other errors, I need to fix this one first. If someone is bothered by this, and wants to make this dependency explicit, the testSetup() could be called in the setup() method. But I don't think it matters. My point is that, in JUnit, you can already have something similar in the rest of your tests: <ol> <li>some tests that test local code, </li> <li>and some tests that is calls more global code, which indirectly calls the same code as the previous test.</li> </ol> When you read the test result where both fail, you already have to take care of this dependency that is not in the test, but in the code being called. You have to fix the simple test first, and then rerun the global test to see if it still fails. This is the reason why I'm not bothered by the implicit dependency I explained before.

2,280,539

Custom model validation of dependent properties using Data Annotations

Since now I've used the excellent <a href="http://fluentvalidation.codeplex.com/wikipage" rel="noreferrer">FluentValidation</a> library to validate my model classes. In web applications I use it in conjunction with the <a href="http://docs.jquery.com/Plugins/Validation" rel="noreferrer">jquery.validate</a> plugin to perform client side validation as well. One drawback is that much of the validation logic is repeated on the client side and is no longer centralized at a single place. For this reason I'm looking for an alternative. There are <a href="http://haacked.com/archive/2009/11/19/aspnetmvc2-custom-validation.aspx" rel="noreferrer">many</a> examples out <a href="http://bradwilson.typepad.com/blog/2009/04/dataannotations-and-aspnet-mvc.html" rel="noreferrer">there</a> showing the usage of data annotations to perform model validation. It looks very promising. One thing I couldn't find out is how to validate a property that depends on another property value. Let's take for example the following model: <pre><code>public class Event { [Required] public DateTime? StartDate { get; set; } [Required] public DateTime? EndDate { get; set; } } </code></pre> I would like to ensure that <code>EndDate</code> is greater than <code>StartDate</code>. I could write a custom validation attribute extending <a href="http://msdn.microsoft.com/en-us/library/system.componentmodel.dataannotations.validationattribute.aspx" rel="noreferrer">ValidationAttribute</a> in order to perform custom validation logic. Unfortunately I couldn't find a way to obtain the model instance: <pre><code>public class CustomValidationAttribute : ValidationAttribute { public override bool IsValid(object value) { // value represents the property value on which this attribute is applied // but how to obtain the object instance to which this property belongs? return true; } } </code></pre> I found that the <a href="http://weblogs.asp.net/peterblum/archive/2009/12/07/the-customvalidationattribute.aspx" rel="noreferrer">CustomValidationAttribute</a> seems to do the job because it has this <code>ValidationContext</code> property that contains the object instance being validated. Unfortunately this attribute has been added only in .NET 4.0. So my question is: can I achieve the same functionality in .NET 3.5 SP1? <hr> UPDATE: It seems that <a href="http://www.jeremyskinner.co.uk/2010/02/06/fluentvalidation-1-2-beta-2-and-mvc2-rc2/" rel="noreferrer">FluentValidation already supports</a> clientside validation and metadata in ASP.NET MVC 2. Still it would be good to know though if data annotations could be used to validate dependent properties.

2,360,115

5

1

null

2010-02-17 12:30:50.71 UTC

16

2015-12-09 15:23:01.45 UTC

2010-02-17 16:08:35.587 UTC

null

29,407

null

29,407

null

1

45

validation|.net-3.5|asp.net-mvc-2|data-annotations

41,405

MVC2 comes with a sample "PropertiesMustMatchAttribute" that shows how to get DataAnnotations to work for you and it should work in both .NET 3.5 and .NET 4.0. That sample code looks like this: <pre><code>[AttributeUsage(AttributeTargets.Class, AllowMultiple = true, Inherited = true)] public sealed class PropertiesMustMatchAttribute : ValidationAttribute { private const string _defaultErrorMessage = "'{0}' and '{1}' do not match."; private readonly object _typeId = new object(); public PropertiesMustMatchAttribute(string originalProperty, string confirmProperty) : base(_defaultErrorMessage) { OriginalProperty = originalProperty; ConfirmProperty = confirmProperty; } public string ConfirmProperty { get; private set; } public string OriginalProperty { get; private set; } public override object TypeId { get { return _typeId; } } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentUICulture, ErrorMessageString, OriginalProperty, ConfirmProperty); } public override bool IsValid(object value) { PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(value); object originalValue = properties.Find(OriginalProperty, true /* ignoreCase */).GetValue(value); object confirmValue = properties.Find(ConfirmProperty, true /* ignoreCase */).GetValue(value); return Object.Equals(originalValue, confirmValue); } } </code></pre> When you use that attribute, rather than put it on a property of your model class, you put it on the class itself: <pre><code>[PropertiesMustMatch("NewPassword", "ConfirmPassword", ErrorMessage = "The new password and confirmation password do not match.")] public class ChangePasswordModel { public string NewPassword { get; set; } public string ConfirmPassword { get; set; } } </code></pre> When "IsValid" gets called on your custom attribute, the whole model instance is passed to it so you can get the dependent property values that way. You could easily follow this pattern to create a date comparison attribute, or even a more general comparison attribute. <a href="http://bradwilson.typepad.com/blog/2010/01/remote-validation-with-aspnet-mvc-2.html" rel="noreferrer">Brad Wilson has a good example on his blog</a> showing how to add the client-side portion of the validation as well, though I'm not sure if that example will work in both .NET 3.5 and .NET 4.0.

2,091,830

Cannot find either column "dbo" or the user-defined function or aggregate "dbo.Splitfn", or the name is ambiguous

I've used the following split function: <pre><code>CREATE FUNCTION dbo.Splitfn(@String varchar(8000), @Delimiter char(1)) returns @temptable TABLE (items varchar(8000)) as begin declare @idx int declare @slice varchar(8000) select @idx = 1 if len(@String)<1 or @String is null return while @idx!= 0 begin set @idx = charindex(@Delimiter,@String) if @idx!=0 set @slice = left(@String,@idx - 1) else set @slice = @String if(len(@slice)>0) insert into @temptable(Items) values(@slice) set @String = right(@String,len(@String) - @idx) if len(@String) = 0 break end return end </code></pre> and i used this function in a query and it was executed <pre><code>ALTER PROCEDURE [dbo].[Employees_Delete] -- Add the parameters for the stored procedure here @Id varchar(50) AS BEGIN -- SET NOCOUNT ON added to prevent extra result sets from -- interfering with SELECT statements. SET NOCOUNT ON; -- Insert statements for procedure here if exists( select Emp_Id from Employee where Emp_Id=dbo.Splitfn(@Id,',')) begin update Employee set Is_Deleted=1 where Emp_Id=dbo.Splitfn(@Id,',') select 'deleted' as message end END </code></pre> but when i excute my store procedure giving values say (1,2) i got the error <pre><code>Cannot find either column "dbo" or the user-defined function or aggregate "dbo.Splitfn", or the name is ambiguous. </code></pre> I've checked my tablevalued functions the function 'splitfn' was there but I don't know what is going wrong? Any suggestions..

2,091,864

5

0

null

2010-01-19 07:33:06.763 UTC

7

2022-06-20 08:59:57.037 UTC

null

74,585

null

146,857

null

1

67

sql-server|sql-server-2005|tsql|user-defined-functions

148,773

It's a table-valued function, but you're using it as a scalar function. Try: <pre><code>where Emp_Id IN (SELECT i.items FROM dbo.Splitfn(@Id,',') AS i) </code></pre> But... also consider changing your function into an inline TVF, as it'll perform better.

1,933,015

Opening a File from assets folder in android

I have a .gif file inside the assets folder like this assets/Files/android.gif. when I try to open the file it throws an exception at the second line <pre><code>AssetManager mngr=getAssets(); InputStream is2=mngr.open("Files/android.gif"); </code></pre> so Is it that I'm trying to open an image file despite that the same code works if I try to open a text file ? what can be the problem here.

8,502,231

6

0

null

2009-12-19 14:18:44.36 UTC

5

2018-10-27 23:29:52.473 UTC

2013-05-18 08:10:57.67 UTC

null

683,261

null

235,123

null

1

15

android|android-assets

62,406

These Lines are working perfectly-- <pre><code>InputStream assetInStream=null; try { assetInStream=getAssets().open("icon.png"); Bitmap bit=BitmapFactory.decodeStream(assetInStream); img.setImageBitmap(bit); } catch (IOException e) { e.printStackTrace(); } finally { if(assetInStream!=null) assetInStream.close(); } </code></pre> If your image is very big then you should scale your image before decoding it into Bitmap. <a href="http://androidtrainningcenter.blogspot.in/2012/04/displaying-bitmaps-efficiently-and.html" rel="nofollow noreferrer">See How to display large image efficiently</a>

1,645,209

How can I filter ListView data when typing on EditText in android

I have a <code>ListView</code> and a <code>EditText</code>. How can I filter ListView data when typing on <code>EditText</code>?

1,645,686

6

3

null

2009-10-29 17:07:42.563 UTC

13

2020-02-24 12:59:33.143 UTC

null

152,286

null

1

32

android

53,815

<ol> <li>Add <code>TextWatcher</code> to <code>EditText#addTextChangedListener</code></li> <li>In <code>onTextChanged</code> add or remove items from your <code>ListView</code>'s adapter. If you are subclassing <code>ArrayAdapter</code> it would have <code>add</code> and <code>remove</code> methods</li> </ol>

2,139,165

Delete all local changesets and revert to tree

I'm using Mercurial and I've got into a terrible mess locally, with three heads. I can't push, and I just want to delete all my local changes and commits and start again with totally clean code and a clean history. In other words, I want to end up with (a) exactly the same code locally as exists in the tip of the remote branch and (b) no history of any local commits. I know <code>hg update -C</code> overwrites any local changes. But how do I delete any local commits? To be clear, I have no interest in preserving any of the work I've done locally. I just want the simplest way to revert back to a totally clean local checkout.

2,143,711

7

1

null

2010-01-26 11:58:06.903 UTC

32

2018-12-17 19:42:48.393 UTC

2015-02-03 13:30:22.147 UTC

null

419,956

null

194,000

null

1

95

version-control|mercurial|dvcs|head

40,094

When the simplest way (a new <code>hg clone</code>) isn't practical, I use <code>hg strip</code>: <pre><code>% hg outgoing -l 1 % hg strip $rev # replace $rev with the revision number from outgoing </code></pre> Repeat until <code>hg outgoing</code> stays quiet. Note that <code>hg strip $rev</code> obliterates <code>$rev</code> and all its descendants. Note that you may have to <a href="https://www.mercurial-scm.org/wiki/StripExtension" rel="noreferrer">first enable <code>strip</code> in your Mercurial settings</a>. PS: an even smarter approach is to use the revset language, and do: <pre><code>% hg strip 'roots(outgoing())' </code></pre>

1,490,138

Reading the first line of a file in Ruby

I want to read only the first line of a file using Ruby in the fastest, simplest, most idiomatic way possible. What's the best approach? (Specifically: I want to read the git commit UUID out of the REVISION file in my latest Capistrano-deployed Rails directory, and then output that to my tag. This will let me see at an http-glance what version is deployed to my server. If there's an entirely different & better way to do this, please let me know.)

1,490,163

8

0

null

2009-09-29 01:28:45.897 UTC

11

2019-08-12 08:42:13.58 UTC

2009-12-05 01:12:06.45 UTC

null

3,488

null

3,488

null

1

66

ruby-on-rails|ruby|git|file-io|capistrano

44,707

This will read exactly one line and ensure that the file is properly closed immediately after. <pre><code>strVar = File.open('somefile.txt') {|f| f.readline} # or, in Ruby 1.8.7 and above: # strVar = File.open('somefile.txt', &:readline) puts strVar </code></pre>

1,883,414

Why top margin of html element is ignored after floated element?

I have a page with 2 divs. The first one is floated. The 2nd one has a "clear: both" CSS declaration and a big top margin. However, when I view the page in Firefox or IE8, I don't see the top margin. It looks like the 2nd div is touching the first div, instead of being separated. Is there any way to make the top margin work properly? I have read the CSS spec and noticed that it says "Since a float is not in the flow, non-positioned block boxes created before and after the float box flow vertically as if the float didn't exist.". However, I don't know what to do about that. Here is an example: <div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false"> <div class="snippet-code"> <pre class="snippet-code-html lang-html prettyprint-override"><code><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html><head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>CSS test</title> </head> <body> <div style="float: left; border: solid red 1px">foo</div> <div style="clear: both; margin-top: 90px; border: solid red 1px">This div should not touch the other div.</div> </body> </html></code></pre> </div> </div>

1,883,438

9

1

null

2009-12-10 19:34:35.287 UTC

14

2020-11-13 09:52:43.163 UTC

2019-03-29 18:39:21.487 UTC

null

10,139,616

null

28,324

null

1

53

html|css

41,656

You've correctly identified the problem. The floated <code><div></code> is no longer used to calculate the top margin, and therefor the 2 <code><div></code>'s just butt against each other. A simple way to solve this is just to wrap the 2nd <code><div></code>. This will allow the wrapper to (invisibly) butt up against the first <code><div></code>, and allow you to specify white space for it. The trick to getting the wrapper to work right is to have the white space be internal white space. In other words, the wrapper uses padding instead of margin. This means whatever is going on outside the wrapper (like other floating elements) won't really matter. <div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false"> <div class="snippet-code"> <pre class="snippet-code-html lang-html prettyprint-override"><code><div style="float: left; border: solid red 1px">foo</div> <div class="wrapper" style="clear: both; padding-top: 90px;"> <div style="border: solid red 1px">This div should not touch the other div.</div> </div></code></pre> </div> </div>

1,353,022

Reflection support in C

I know it is not supported, but I am wondering if there are any tricks around it. Any tips?

1,353,133

10

5

null

2009-08-30 03:47:16.15 UTC

16

2021-03-12 20:48:20.657 UTC

2015-05-01 16:08:00.863 UTC

null

3,453,226

null

129,962

null

1

36

c|reflection

25,809

Reflection in general is a means for a program to analyze the structure of some code. This analysis is used to change the effective behavior of the code. Reflection as analysis is generally very weak; usually it can only provide access to function and field names. This weakness comes from the language implementers essentially not wanting to make the full source code available at runtime, along with the appropriate analysis routines to extract what one wants from the source code. Another approach is tackle program analysis head on, by using a strong program analysis tool, e.g., one that can parse the source text exactly the way the compiler does it. (Often people propose to abuse the compiler itself to do this, but that usually doesn't work; the compiler machinery wants to be a compiler and it is darn hard to bend it to other purposes). What is needed is a tool that: <ul> <li>Parses language source text</li> <li>Builds abstract syntax trees representing every detail of the program. (It is helpful if the ASTs retain comments and other details of the source code layout such as column numbers, literal radix values, etc.)</li> <li>Builds symbol tables showing the scope and meaning of every identifier</li> <li>Can extract control flows from functions</li> <li>Can extact data flow from the code</li> <li>Can construct a call graph for the system</li> <li>Can determine what each pointer points-to</li> <li>Enables the construction of custom analyzers using the above facts</li> <li>Can transform the code according to such custom analyses (usually by revising the ASTs that represent the parsed code)</li> <li>Can regenerate source text (including layout and comments) from the revised ASTs.</li> </ul> Using such machinery, one implements analysis at whatever level of detail is needed, and then transforms the code to achieve the effect that runtime reflection would accomplish. There are several major benefits: <ul> <li>The detail level or amount of analysis is a matter of ambition (e.g., it isn't limited by what runtime reflection can only do)</li> <li>There isn't any runtime overhead to achieve the reflected change in behavior</li> <li>The machinery involved can be general and applied across many languages, rather than be limited to what a specific language implementation provides.</li> <li>This is compatible with the C/C++ idea that you don't pay for what you don't use. If you don't need reflection, you don't need this machinery. And your language doesn't need to have the intellectual baggage of weak reflection built in.</li> </ul> See our <a href="http://www.semdesigns.com/Products/DMS/DMSToolkit.html" rel="noreferrer">DMS Software Reengineering Toolkit</a> for a system that can do all of the above for C, Java, and COBOL, and most of it for C++. [EDIT August 2017: Now handles C11 and C++2017]

2,322,953

JAX-WS - Adding SOAP Headers

I am trying to create a standalone client to consume some web services. I must add my username and password to the SOAP Header. I tried adding the credentials as follows: <pre><code>OTSWebSvcsService service = new OTSWebSvcsService(); OTSWebSvcs port = service.getOTSWebSvcs(); BindingProvider prov = (BindingProvider)port; prov.getRequestContext().put(BindingProvider.USERNAME_PROPERTY, "myusername"); prov.getRequestContext().put(BindingProvider.PASSWORD_PROPERTY, "mypassword"); ... </code></pre> When I call a method on the service I get the following exception: <pre><code>com.ibm.wsspi.wssecurity.SoapSecurityException: WSEC5048E: One of "SOAP Header" elements required. </code></pre> What am I doing wrong? How would I add these properties to the SOAP Header? Edited: I was using JAX-WS 2.1 included in JDK6. I am now using JAX-WS 2.2. I now get the following exception: <pre><code>com.ibm.wsspi.wssecurity.SoapSecurityException: WSEC5509E: A security token whose type is [http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#UsernameToken] is required. </code></pre> How do I go about creating this token?

2,323,109

10

2

null

2010-02-24 00:57:22.333 UTC

11

2020-09-17 14:55:59.483 UTC

2010-02-24 18:26:35.673 UTC

null

70,604

null

245,914

null

1

36

java|web-services|soap|jax-ws|ws-security

126,068

Not 100% sure as the question is missing some details but if you are using JAX-WS RI, then have a look at <a href="https://javaee.github.io/metro/doc/user-guide/user-guide.html#adding-soap-headers-when-sending-requests" rel="noreferrer">Adding SOAP headers when sending requests</a>: <blockquote> The portable way of doing this is that you create a <code>SOAPHandler</code> and mess with SAAJ, but the RI provides a better way of doing this. When you create a proxy or dispatch object, they implement <code>BindingProvider</code> interface. When you use the JAX-WS RI, you can downcast to <code>WSBindingProvider</code> which defines a few more methods provided only by the JAX-WS RI. This interface lets you set an arbitrary number of Header object, each representing a SOAP header. You can implement it on your own if you want, but most likely you'd use one of the factory methods defined on <code>Headers</code> class to create one. <pre><code>import com.sun.xml.ws.developer.WSBindingProvider; HelloPort port = helloService.getHelloPort(); // or something like that... WSBindingProvider bp = (WSBindingProvider)port; bp.setOutboundHeader( // simple string value as a header, like <simpleHeader>stringValue</simpleHeader> Headers.create(new QName("simpleHeader"),"stringValue"), // create a header from JAXB object Headers.create(jaxbContext,myJaxbObject) ); </code></pre> </blockquote> Update your code accordingly and try again. And if you're not using JAX-WS RI, please update your question and provide more context information. Update: It appears that the web service you want to call is secured with WS-Security/UsernameTokens. This is a bit different from your initial question. Anyway, to configure your client to send usernames and passwords, I suggest to check the great post <a href="http://web-gmazza.rhcloud.com/blog/entry/metro-usernametoken-profile" rel="noreferrer">Implementing the WS-Security UsernameToken Profile for Metro-based web services</a> (jump to step 4). Using NetBeans for this step might ease things a lot.

2,004,135

How to merge conflicts (file project.pbxproj) in Xcode use svn?

There are two members in our team. We use Xcode's SCM (use SVN) to manger our source code files. We all add files to our Xcode project. He has committed to SVN server. When I update, Xcode find there has conflicts in <code>project.pbxproj</code> file. Then I select quit <code>Xcode</code> and manually merge the conflicts. Then I start to edit my <code>project.pbxproj</code>, merge our changes. Actually I don't know how Xcode manage files, I just add some text that my <code>project.pbxproj</code> file did't have. When I finish, my project can't open. I guess that because the <code>project.pbxproj</code> file can't be edit by manual. So, I want to know, when you find this problem, the project.pbxproj file have conflicts, how to solve it? Thank you!

2,004,418

13

0

null

2010-01-05 04:19:49.95 UTC

26

2020-11-21 08:29:19.943 UTC

2018-04-26 01:41:29.4 UTC

null

503,099

null

238,028

null

1

79

iphone|svn|xcode|conflict

100,024

Unfortunately, there's not much you can do except to make the changes manually in one check out and then check-in the newly "merged" project.

1,940,578

WindowsError: [Error 126] The specified module could not be found

I am loading a dll in python using following code: <pre><code>if os.path.exists(dll_path): my_dll = ctypes.cdll.LoadLibrary(dll_path) </code></pre> But I am continuously getting the following error WindowsError: [Error 126] The specified module could not be found dll is present at the specified path, but I didn't understand why I'm getting the error.

6,087,086

14

2

null

2009-12-21 14:59:12.253 UTC

6

2021-09-19 06:46:51.74 UTC

2014-08-25 18:33:14.127 UTC

null

1,172,451

null

216,514

null

1

46

python|ctypes

139,603

When I see things like this - it is usually because there are backslashes in the path which get converted. For example - the following will fail - because \t in the string is converted to TAB character. <pre><code>>>> import ctypes >>> ctypes.windll.LoadLibrary("c:\tools\depends\depends.dll") Traceback (most recent call last): File "<stdin>", line 1, in <module> File "c:\tools\python271\lib\ctypes\__init__.py", line 431, in LoadLibrary return self._dlltype(name) File "c:\tools\python271\lib\ctypes\__init__.py", line 353, in __init__ self._handle = _dlopen(self._name, mode) WindowsError: [Error 126] The specified module could not be found </code></pre> There are 3 solutions (if that is the problem) a) Use double slashes... <pre><code>>>> import ctypes >>> ctypes.windll.LoadLibrary("c:\\tools\\depends\\depends.dll") </code></pre> b) use forward slashes <pre><code>>>> import ctypes >>> ctypes.windll.LoadLibrary("c:/tools/depends/depends.dll") </code></pre> c) use RAW strings (prefacing the string with r <pre><code>>>> import ctypes >>> ctypes.windll.LoadLibrary(r"c:\tools\depends\depends.dll") </code></pre> While this third one works - I have gotten the impression from time to time that it is not considered 'correct' because RAW strings were meant for regular expressions. I have been using it for paths on Windows in Python for years without problem :) )

8,811,603

How to fix PHP errors related to timezone (function.strtotime and function.date)

Upgrading to a new server, I two repeated errors: <blockquote> Warning: strtotime() [function.strtotime]: It is not safe to rely on the system's timezone settings. You are required to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in... </blockquote> and <blockquote> Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are required to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in </blockquote> How do I go about fixing these? Code in question is this: <pre><code>'date' => date("Y-M-d",strtotime($Array['_dateCreated'])), </code></pre> I've tried putting this in an include at the top of all my pages: <pre><code><?php date_default_timezone_set('America/New_York'); ?> </code></pre> Thanks in advance for your help.

8,811,841

2

null

2012-01-10 22:36:28.18 UTC

6

2015-02-18 08:27:31.637 UTC

null

Keefer

675,592

null

1

15

php

82,030

<code>date.timezone</code> in <code>php.ini</code> can fix this globally.

8,495,293

What's a clean way to stop mongod on Mac OS X?

i'm running mongo 1.8.2 and trying to see how to cleanly shut it down on Mac. on our ubuntu servers i can shutdown mongo cleanly from the mongo shell with: <pre><code>> use admin > db.shutdownServer() </code></pre> but on my Mac, it does not kill the mongod process. the output shows that it 'should be' shutdown but when i ps -ef | grep mongo it shows me an active process. also, i can still open a mongo shell and query my dbs like it was never shutdown. the output from my db.shutdownServer() locally is: <pre><code>MongoDB shell version: 1.8.2 connecting to: test > use admin switched to db admin > db.shutdownServer() Tue Dec 13 11:44:21 DBClientCursor::init call() failed Tue Dec 13 11:44:21 query failed : admin.$cmd { shutdown: 1.0 } to: 127.0.0.1 server should be down... Tue Dec 13 11:44:21 trying reconnect to 127.0.0.1 Tue Dec 13 11:44:21 reconnect 127.0.0.1 failed couldn't connect to server 127.0.0.1 Tue Dec 13 11:44:21 Error: error doing query: unknown shell/collection.js:150 </code></pre> i know i can just kill the process but i'd like to do it more cleanly.

8,499,754

9

2

null

2011-12-13 19:53:04.55 UTC

55

2022-07-06 01:48:21.867 UTC

2014-01-14 17:55:15.93 UTC

null

2,619,107

null

657,180

null

1

97

macos|mongodb|launchd

132,533

It's probably because launchctl is managing your mongod instance. If you want to start and shutdown mongod instance, unload that first: <pre><code>launchctl unload -w ~/Library/LaunchAgents/org.mongodb.mongod.plist </code></pre> Then start mongod manually: <pre><code>mongod -f path/to/mongod.conf --fork </code></pre> You can find your mongod.conf location from <code>~/Library/LaunchAgents/org.mongodb.mongod.plist</code>. After that, <code>db.shutdownServer()</code> would work just fine. Added Feb 22 2014: If you have mongodb installed via homebrew, homebrew actually has a handy <code>brew services</code> command. To show current running services: <code>brew services list</code> To start mongodb: <code>brew services start mongodb-community</code> To stop mongodb if it's already running: <code>brew services stop mongodb-community</code> Update* As edufinn pointed out in the comment, <code>brew services</code> is now available as user-defined command and can be installed with following command: <code>brew tap gapple/services</code>.

17,879,846

Bootstrap scrollspy offset on a fixed navbar does not work

I have created and exact fiddle of my problem here for testing: <a href="http://jsfiddle.net/aVBUy/7/">http://jsfiddle.net/aVBUy/7/</a> The issue is, when I click on navbar items, I have a script which scrolls to the element id. And I am using scrollspy to highlight the nav elements when page is in correct position. However the scrollspy is only changing the active state when it hits the top of the browser/device. Because my navbar is fixed I need an offset applied to scrollspy to offset by 51px (navbar height). I've tried everything and I can't get it to work. Please check my fiddle and see if you can find the where I'm going wrong, would help me so much. Here's my minimised code... HTML <pre><code><div class="navbar navbar-inverse navbar-fixed-top"> <div class="navbar-inner"> <div class="container"> <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse"> </a> <a class="brand" href="#"><img src="img/logo.gif" alt="" /></a> <div class="nav-collapse collapse"> <ul class="nav"> <li><a href="#welcome" data-scroll="#welcome">Welcome</a></li> <li><a href="#about" data-scroll="#about">About</a></li> <li><a href="#route" data-scroll="#route">The Route</a></li> <li><a href="#bike" data-scroll="#bike">The Bike</a></li> </ul> </div> </div> </div> </div> <div class="container"> <div id="welcome" class="row-fluid"> <div class="span12"> <h3>Welcome</h3> ... </div> </div> <hr /> <div id="about" class="row-fluid"> <div class="span12"> <h3>About the ride</h3> ... </div> </div> <hr /> <div id="route" class="row-fluid"> <div class="span12"> <h3>The Route</h3> ... </div> </div> <hr /> <div id="bike" class="row-fluid"> <div class="span12"> <h3>The Bike</h3> ... </div> </div> <hr> <footer> © 2013 All rights reserved. </footer> </div> </code></pre> CSS <pre><code>body { padding: 51px 0 0; } /* Override Bootstrap Responsive CSS fixed navbar */ @media (max-width: 979px) { .navbar-fixed-top, .navbar-fixed-bottom { position: fixed; margin-left: 0px; margin-right: 0px; } } body > .container { padding: 0 15px; } </code></pre> SCRIPT <pre><code>var offsetHeight = 51; $('.nav-collapse').scrollspy({ offset: offsetHeight }); $('.navbar li a').click(function (event) { var scrollPos = $('body > .container').find($(this).attr('href')).offset().top - offsetHeight; $('body,html').animate({ scrollTop: scrollPos }, 500, function () { $(".btn-navbar").click(); }); return false; }); </code></pre> FIDDLE <a href="http://jsfiddle.net/aVBUy/7/">http://jsfiddle.net/aVBUy/7/</a>

17,885,251

6

0

null

2013-07-26 11:11:49.47 UTC

4

2018-11-05 12:27:02.78 UTC

2015-12-14 16:11:05.47 UTC

null

4,278,038

null

801,773

null

1

16

jquery|twitter-bootstrap|jsfiddle|scrollspy

51,863

You need to apply the offset to the body. <pre><code>$('body').scrollspy({ offset: offsetHeight }); </code></pre> Also, you will need to subtract at least one from the offsetHeight in the line below, otherwise it will not work when scrolling up. <pre><code>var scrollPos = $('body > .container').find($(this).attr('href')).offset().top - (offsetHeight - 1); </code></pre>