id int64 4 73.8M | title stringlengths 10 150 | body stringlengths 17 50.8k | accepted_answer_id int64 7 73.8M | answer_count int64 1 182 | comment_count int64 0 89 | community_owned_date stringlengths 23 27 ⌀ | creation_date stringlengths 23 27 | favorite_count int64 0 11.6k ⌀ | last_activity_date stringlengths 23 27 | last_edit_date stringlengths 23 27 ⌀ | last_editor_display_name stringlengths 2 29 ⌀ | last_editor_user_id int64 -1 20M ⌀ | owner_display_name stringlengths 1 29 ⌀ | owner_user_id int64 1 20M ⌀ | parent_id null | post_type_id int64 1 1 | score int64 -146 26.6k | tags stringlengths 1 125 | view_count int64 122 11.6M | answer_body stringlengths 19 51k |
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8,512,802 | Checking if a variable is defined in SASS | <p>AS the title says I am trying to check whether a variable is defined in SASS. (I am using compass if that makes any different difference)</p>
<p>I've found the Ruby equivalent which is:</p>
<pre><code>defined? foo</code></pre>
<p>Gave that a shot in the dark but it just gave me the error:</p>
<p><code>defined": ... | 13,237,776 | 3 | 4 | null | 2011-12-14 22:43:17.927 UTC | 15 | 2020-04-20 20:45:20.473 UTC | 2011-12-15 02:06:13.697 UTC | null | 708,689 | null | 708,689 | null | 1 | 59 | ruby|sass | 57,756 | <h3>For Sass 3.3 and later</h3>
<p>As of Sass 3.3 there is a <code>variable-exists()</code> function. From <a href="http://sass-lang.com/documentation/file.SASS_CHANGELOG.html" rel="noreferrer">the changelog</a>:</p>
<blockquote>
<ul>
<li>It is now possible to determine the existence of different Sass constructs ... |
8,512,588 | Tomcat: LifecycleException when deploying | <p>I just downloaded the Tomcat 7.0.23 package on my Ubuntu 11.10. </p>
<p>I followed the instructions on a Google API website to <a href="http://code.google.com/apis/chart/interactive/docs/dev/dsl_get_started.html#webapp" rel="noreferrer">deploy their example webapp</a>. It basically consists of <code>jar</code> file... | 8,512,930 | 17 | 5 | null | 2011-12-14 22:25:09.127 UTC | 5 | 2022-03-21 14:43:59.94 UTC | 2016-01-13 10:55:12.257 UTC | null | 3,885,376 | null | 749,588 | null | 1 | 50 | tomcat|lifecycleexception | 213,779 | <p>This means something is wrong with your application configuration or startup. </p>
<p>There is always information about that in the logs - check <code>logs/catalina.out</code> and figure out what is wrong.</p> |
8,389,812 | How are generators and coroutines implemented in CPython? | <p>I've read that in CPython, the interpreter stack (the list of Python functions called to reach this point) is mixed with the C stack (the list of C functions that were called in the interpreter's own code). If so, then how are generators and coroutines implemented? How do they remember their execution state? Does CP... | 8,390,077 | 2 | 5 | null | 2011-12-05 18:10:16.553 UTC | 22 | 2015-05-06 04:02:59.853 UTC | null | null | null | null | 618,967 | null | 1 | 58 | python|coroutine | 6,809 | <p>The <code>yield</code> instruction takes the current executing context as a closure, and transforms it into an own living object. This object has a <code>__iter__</code> method which will continue after this yield statement.</p>
<p>So the call stack gets transformed into a heap object.</p> |
5,111,828 | How to have a UISwipeGestureRecognizer AND UIPanGestureRecognizer work on the same view | <p>How would you setup the gesture recognizers so that you could have a <strong>UISwipeGestureRecognizer</strong> and a <strong>UIPanGestureRecognizer</strong> work at the same time? Such that if you touch and move quickly (quick swipe) it detects the gesture as a swipe but if you touch then move (short delay between ... | 5,113,187 | 4 | 0 | null | 2011-02-24 23:24:26.373 UTC | 14 | 2019-07-17 23:22:26.743 UTC | null | null | null | null | 155,513 | null | 1 | 26 | iphone|objective-c|uigesturerecognizer|gesture-recognition | 15,421 | <p>You're going to want to set one of the two <code>UIGestureRecognizer</code>'s delegates to an object that makes sense (likely <code>self</code>) then listen, and return <code>YES</code> for this <a href="http://developer.apple.com/library/ios/#documentation/uikit/reference/UIGestureRecognizerDelegate_Protocol/Refere... |
5,029,183 | Android dialer application | <p>I am figuring out a way to replace the default dialer application from my custom dialer application, but I am not getting how to achieve this.</p>
<p>Here is what I want</p>
<ul>
<li>Create a custom dialer UI</li>
<li>My application is called whenever call button hardware or that one in Android is pressed</li>
<li... | 5,029,367 | 4 | 1 | null | 2011-02-17 12:56:20.783 UTC | 26 | 2018-04-16 18:26:07.827 UTC | 2017-08-18 12:07:13.113 UTC | null | 1,000,551 | null | 517,247 | null | 1 | 32 | android|phone-call | 57,399 | <ol>
<li><p>Create a simple Android application (our dialer). To actually call someone, you just need that method:</p>
<pre><code>private void performDial(String numberString) {
if (!numberString.equals("")) {
Uri number = Uri.parse("tel:" + numberString);
Intent dial = new Intent(Intent.ACTION_CALL,... |
4,880,286 | Is a Markov chain the same as a finite state machine? | <p>Is a finite state machine just an implementation of a Markov chain? What are the differences between the two?</p> | 4,880,350 | 6 | 2 | null | 2011-02-02 21:52:02.137 UTC | 22 | 2019-07-06 22:45:17.14 UTC | 2017-07-13 07:56:42.763 UTC | null | 527,702 | null | 200,619 | null | 1 | 92 | math|statistics|state-machine|fsm|markov-chains | 27,805 | <p>Markov chains can be represented by finite state machines. The idea is that a Markov chain describes a process in which the transition to a state at time t+1 depends only on the state at time t. The main thing to keep in mind is that the transitions in a Markov chain are probabilistic rather than deterministic, whic... |
5,061,640 | make arrayList.toArray() return more specific types | <p>So, normally <code>ArrayList.toArray()</code> would return a type of <code>Object[]</code>....but supposed it's an
<code>Arraylist</code> of object <code>Custom</code>, how do I make <code>toArray()</code> to return a type of <code>Custom[]</code> rather than <code>Object[]</code>?</p> | 5,061,692 | 6 | 2 | null | 2011-02-21 02:07:10.953 UTC | 31 | 2021-10-19 12:51:58.46 UTC | 2013-11-26 00:01:57.843 UTC | null | 1,102,512 | null | 380,714 | null | 1 | 218 | java|arrays|object|types|arraylist | 183,065 | <p>Like this:</p>
<pre><code>List<String> list = new ArrayList<String>();
String[] a = list.toArray(new String[0]);
</code></pre>
<p>Before Java6 it was recommended to write:</p>
<pre><code>String[] a = list.toArray(new String[list.size()]);
</code></pre>
<p>because the internal implementation would re... |
5,183,251 | Querying Users who 'like' my Facebook Page | <p>I was wondering if it was possible to query the following:</p>
<ul>
<li>List of (all) users who like my facebook page, and</li>
<li>Additional information those users have made publicly available (beyond first and last name)</li>
</ul>
<p>Basically looking to generate detailed marketing stats of users who like my ... | 5,186,725 | 8 | 2 | null | 2011-03-03 16:03:16.543 UTC | 16 | 2018-09-28 13:49:40.827 UTC | null | null | null | null | 643,274 | null | 1 | 23 | facebook|facebook-graph-api | 46,016 | <p>I am afraid this is <strong>NOT</strong> possible, follow this <a href="https://developers.facebook.com/bugs/147185208750426">bug</a> for more information. </p>
<p>Another proof is the <code>page_fan</code> table you will notice that only the <code>uid</code> field is indexable so you <strong>need</strong> to know... |
5,346,694 | How to implement a lock in JavaScript | <p>How could something equivalent to <code>lock</code> in C# be implemented in JavaScript?</p>
<p>So, to explain what I'm thinking a simple use case is: </p>
<p>User clicks button <code>B</code>. <code>B</code> raises an onclick event. If <code>B</code> is in <code>event-state</code> the event waits for <code>B</co... | 5,347,055 | 9 | 7 | null | 2011-03-17 23:57:20.66 UTC | 30 | 2022-08-25 05:36:24.097 UTC | 2020-07-19 11:17:28.527 UTC | null | 4,370,109 | null | 344,211 | null | 1 | 104 | javascript|events|locking|dom-events|deadlock | 127,898 | <p>Lock is a questionable idea in JS which is intended to be threadless and not needing concurrency protection. You're looking to combine calls on deferred execution. The pattern I follow for this is the use of callbacks. Something like this:</p>
<pre><code>var functionLock = false;
var functionCallbacks = [];
var loc... |
12,541,419 | PHP keep checkbox checked after submitting form | <p>Hi all i have a contact form and captcha is there. i want keep the check is checked after submitting the form. I posted the textbox values and it showing correctly but checkbox is not working. here is my code.</p>
<pre><code><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org /TR/xh... | 12,541,453 | 5 | 0 | null | 2012-09-22 06:40:05.347 UTC | 2 | 2021-02-19 06:19:41.067 UTC | null | null | null | null | 1,567,706 | null | 1 | 11 | php|html | 54,652 | <p>change</p>
<pre><code><input type="checkbox" name="txtCheck" value="<?php echo $_POST['txtCheck'];?>" /><br />
</code></pre>
<p>to</p>
<pre><code><input type="checkbox" name="txtCheck" value="your value" <?php if(isset($_POST['txtCheck'])) echo "checked='checked'"; ?> /><br />... |
12,530,085 | How to setup SVN on Mac OS X 10.8.2? | <p>I have found information that SVN comes with Mac OS X. But there was no SVN on my system. I have installed <code>Subversion-1.6.17-1_10.7.x.pkg</code> and all was good. But after update to Mac OS X 10.8.2 all SVN files were automatically removed from the system. I have tried to install <code>Subversion-1.6.17-1_10.7... | 12,532,138 | 1 | 5 | null | 2012-09-21 11:54:30.753 UTC | 2 | 2012-09-21 14:04:41.997 UTC | 2012-09-21 12:03:55.167 UTC | null | 865,475 | null | 865,475 | null | 1 | 12 | macos|svn|installation | 66,756 | <p>After you have installed Xcode 4.5 you need to follow <a href="https://stackoverflow.com/a/9329325/253056">these instructions</a> in order to install the command line tools. Once you've done that successfully then you should see that svn is installed:</p>
<pre><code>$ which svn
/usr/bin/svn
$ svn --version
svn, ve... |
12,527,433 | correct way of comparing string jquery operator = | <p>Is this the correct way? I want the statement to run if the value of somevar equals the string? </p>
<pre><code>if (somevar = '836e3ef9-53d4-414b-a401-6eef16ac01d6'){
$("#code").text(data.DATA[0].ID);
}
</code></pre> | 12,527,475 | 3 | 1 | null | 2012-09-21 09:05:08.873 UTC | 2 | 2012-09-21 09:14:38.04 UTC | null | null | null | null | 578,822 | null | 1 | 19 | jquery | 161,108 | <p>No. = sets somevar to have that value. use === to compare value and type which returns a boolean that you need.</p>
<p>Never use or suggest == instead of ===. its a recipe for disaster. e.g 0 == "" is true but "" == '0' is false and many more.</p>
<p>More information also in <a href="https://stackoverflow.com/ques... |
12,400,860 | ActiveRecord includes. Specify included columns | <p>I have model Profile. Profile has_one User. User model has field email. When I call</p>
<pre><code>Profile.some_scope.includes(:user)
</code></pre>
<p>it calls</p>
<pre><code>SELECT users.* FROM users WHERE users.id IN (some ids)
</code></pre>
<p>But my User model has many fields that I am not using in rendering... | 12,409,672 | 6 | 0 | null | 2012-09-13 06:48:17.783 UTC | 13 | 2020-06-10 12:47:09.197 UTC | 2018-09-08 04:21:36.37 UTC | null | 2,262,149 | null | 1,262,284 | null | 1 | 37 | ruby-on-rails|ruby-on-rails-3|rails-activerecord | 30,132 | <p>Rails doesn't have the facility to pass the options for <strong>include</strong> query. But we can pass these params with the <strong>association declaration</strong> under the model.</p>
<p>For your scenario, you need to create a new association with users model under the profile model, like below</p>
<pre><code>... |
12,095,113 | R knitr: Possible to programmatically modify chunk labels? | <p>I'm trying to use knitr to generate a report that performs the same set of analyses on different subsets of a data set. The project contains two Rmd files: the first file is a master document that sets up the workspace and the document, the second file only contains chunks that perform the analyses and generates ass... | 14,368,148 | 3 | 0 | null | 2012-08-23 15:27:37.567 UTC | 26 | 2019-04-09 00:58:27.92 UTC | null | null | null | null | 1,560,000 | null | 1 | 50 | r|knitr | 7,539 | <p>For anyone else who comes across this post, I wanted to point out that @Yihui has provided a <a href="https://github.com/yihui/knitr/blob/master/vignettes/knit_expand.Rmd" rel="noreferrer">formal solution</a> to this question in knitr 1.0 with the introduction of the <code>knit_expand()</code> function. It works gre... |
12,077,083 | What is the difference between allprojects and subprojects | <p>On a multi-project gradle build, can someone tell me what exactly is the difference between the "allprojects" section and the "subprojects" one? Just the parent directory? Does anyone use both? If so, do you have general rules that determines what typically is put in each one?</p>
<p>Related question: what is th... | 12,077,290 | 2 | 0 | null | 2012-08-22 16:02:50.613 UTC | 16 | 2012-08-22 16:32:51.81 UTC | null | null | null | null | 1,538,856 | null | 1 | 159 | gradle | 52,528 | <p>In a multi-project gradle build, you have a rootProject and the subprojects. The combination of both is allprojects. The rootProject is where the build is starting from. A common pattern is a rootProject has no code and the subprojects are java projects. In which case, you apply the java plugin to only the subproje... |
44,328,225 | Can't change emulated performance of AVD in Android Studio | <p>I can't change the graphics to software as I'm sure this is the fix for my AVD not launching.
The option is greyed out (see screenshot). Has anyone has experience with this? I couldn't find anyone who had the same issue.</p>
<p>I'm running the latest version of Android Studio on Ubuntu 17.04.</p>
<p><a href="http... | 46,720,472 | 9 | 5 | null | 2017-06-02 11:49:28.987 UTC | 26 | 2021-11-16 14:04:31.703 UTC | null | null | null | null | 3,722,568 | null | 1 | 131 | android|android-studio|avd|ubuntu-17.04 | 100,819 | <p>Actually, this problem seems to be limited to devices with <strong>Play Store</strong> available, so Nexus 5X and Nexus 5 images will be forced to use Automatic Graphics, but all other devices allow you to choose either Automatic, Hardware or Software graphics.</p>
<hr>
<p><em>edit:</em> I've just tested this toda... |
18,824,461 | Display data from database inside <table> using wordpress $wpdb | <p>Can someone help me, how to code the logic to print the data from my database into a <code><table></code>?</p>
<pre><code><table border="1">
<tr>
<th>Firstname</th>
<th>Lastname</th>
<th>Points</th>
</tr>
<tr>
... | 18,824,758 | 4 | 5 | null | 2013-09-16 09:20:32.3 UTC | 4 | 2022-08-05 10:02:02.09 UTC | 2022-08-05 10:02:02.09 UTC | null | 19,664,042 | null | 1,933,824 | null | 1 | 3 | php|wordpress|html-table | 61,759 | <p>Try this: </p>
<pre><code><table border="1">
<tr>
<th>Firstname</th>
<th>Lastname</th>
<th>Points</th>
</tr>
<?php
global $wpdb;
$result = $wpdb->get_results ( "SELECT * FROM myTable" );
foreach ( $result as $print ) {
?>
<... |
24,009,119 | UTF-8 Encoding ; Only some Japanese characters are not getting converted | <p>I am getting the parameter value as parameter from the <strong>Jersey Web Service</strong>, which is in Japaneses characters.</p>
<p>Here, <strong>'japaneseString'</strong> is the web service parameter containing the characters in japanese language.</p>
<pre><code> String name = new String(japaneseString.getByte... | 24,074,921 | 3 | 5 | null | 2014-06-03 07:13:14.623 UTC | 2 | 2014-06-06 05:40:26.153 UTC | null | null | null | null | 2,323,536 | null | 1 | 9 | java|encoding|utf-8|character-encoding|utf | 62,235 | <p>Try with JVM parameter file.encoding to set with value UTF-8 in startup of Tomcat(JVM).
E.x.: -Dfile.encoding=UTF-8</p> |
3,905,734 | How to send 100,000 emails weekly? | <p>How can one send an email to 100,000 users on a weekly basis in PHP? This includes mail to subscribers using the following providers:</p>
<ul>
<li>AOL</li>
<li>G-Mail</li>
<li>Hotmail</li>
<li>Yahoo</li>
</ul>
<p>It is important that all e-mail actually be delivered, to the extent that it is possible. Obviously, j... | 3,905,805 | 3 | 0 | null | 2010-10-11 11:24:18.32 UTC | 325 | 2014-02-05 00:54:39.12 UTC | 2012-06-15 10:36:09.943 UTC | null | 367,456 | null | 244,413 | null | 1 | -146 | php|email|mailing-list|massmail | 163,079 | <p><strong>Short answer:</strong> While it's technically possible to send 100k e-mails each week yourself, the simplest, easiest and cheapest solution is to <strong>outsource this</strong> to one of the companies that specialize in it (I <em>did</em> say "cheapest": there's no limit to the amount of development time (a... |
38,118,572 | Initial job has not accepted any resources; check your cluster UI to ensure that workers are registered and have sufficient resources | <p>I'm trying to run the spark examples from <code>Eclipse</code> and getting this generic error: <code>Initial job has not accepted any resources; check your cluster UI to ensure that workers are registered and have sufficient resources.</code></p>
<p>The version I have is <code>spark-1.6.2-bin-hadoop2.6.</code> I st... | 38,123,434 | 7 | 9 | null | 2016-06-30 09:07:53.047 UTC | 6 | 2022-05-24 15:57:58.353 UTC | null | null | null | null | 373,386 | null | 1 | 33 | java|hadoop|apache-spark | 64,245 | <p>The error indicates that you cluster has insufficient resources for current job.Since you have not started the slaves i.e worker . The cluster won't have any resources to allocate to your job. Starting the slaves will work.</p>
<pre><code>`start-slave.sh <spark://master-ip:7077>`
</code></pre> |
8,835,373 | UI Issue with kal calendar for ipad? | <p>I have UI issue with Kal Calendar for iPad. On the iPad there is an empty space but on the iPhone it's fine. How can i get it to fit in the frame on the iPad?</p>
<pre><code>if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
{
[kal.view setFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.fr... | 8,839,910 | 1 | 6 | null | 2012-01-12 12:51:22.763 UTC | 10 | 2014-05-23 12:54:04.063 UTC | 2012-08-05 13:13:22.453 UTC | null | 106,435 | null | 905,582 | null | 1 | 6 | objective-c|ios|cocoa-touch|ipad | 1,816 | <p>in KalGridView.m you'll find this.</p>
<pre><code>const CGSize kTileSize = { 46.f, 44.f };
</code></pre>
<p>I'd change the code to a property where you can set the frame dynamically to the idiom and/or orientation.</p>
<p>in KalGridView.m</p>
<pre><code> const CGSize kTileSize = { 109.0f, 109.0f };
</code></pre>... |
8,461,851 | What is better, appending new elements via DOM functions, or appending strings with HTML tags? | <p>I have seen a few different methods to add elements to the DOM. The most prevelent seem to be, for example, either </p>
<pre><code>document.getElementById('foo').innerHTML ='<p>Here is a brand new paragraph!</p>';
</code></pre>
<p>or</p>
<pre><code>newElement = document.createElement('p');
elementText... | 8,461,877 | 6 | 8 | null | 2011-12-11 03:55:52.423 UTC | 10 | 2019-03-22 21:51:41.483 UTC | 2011-12-11 16:27:03.75 UTC | null | 153,110 | null | 153,110 | null | 1 | 23 | javascript|dom|appendchild | 7,208 | <p>Some notes:</p>
<ul>
<li><p>Using <code>innerHTML</code> is faster in IE, but slower in chrome + firefox. <a href="http://jsperf.com/innerhtml-vs-w3c-dom/6" rel="noreferrer">Here's one benchmark</a> showing this with a constantly varying set of <code><div></code>s + <code><p></code>s; <a href="http://js... |
20,623,883 | Sublime text find in selection | <p>When I select multiple lines of text in text editor Sublime Text 3, and try to find (<kbd>Ctrl</kbd>+<kbd>F</kbd>) an existing string in it, it fails. In fact, any highlighting I do somehow makes the string unfindable. For example, if I highlight all text in my file, and <kbd>Ctrl</kbd>+<kbd>F</kbd> an existing stri... | 20,799,096 | 2 | 4 | null | 2013-12-17 00:48:13.037 UTC | 3 | 2018-10-02 09:16:59.877 UTC | 2014-09-30 00:55:25.08 UTC | null | 1,696,030 | null | 2,827,314 | null | 1 | 34 | sublimetext|sublimetext3 | 16,805 | <p>I had been fighting with this problem as well and for now (ST3 Build 3059) it still seems to be a bug. It seems like that the editor is not updating the selection for the search/replace bar while you have it open.</p>
<p>Here's a workaround:</p>
<p>1) Close the find/replace bar</p>
<p>2) Make your selection </p>
... |
11,204,891 | How to open .msu extension file? | <p>I have downloaded a file WINDOWS POWERSHELL that has an .msu extension how do i install this package in my winxp professional sp3 OS.</p> | 11,235,020 | 1 | 1 | null | 2012-06-26 09:58:55.807 UTC | 1 | 2016-09-29 19:39:54.85 UTC | 2016-09-29 19:39:54.85 UTC | null | 848,199 | null | 1,067,943 | null | 1 | 8 | windows|windows-xp|windows-update | 70,778 | <p>There is this link on microsoft support site that explains how to install the .msu file:</p>
<ul>
<li><a href="https://support.microsoft.com/en-us/kb/934307" rel="nofollow">Description of the Windows Update Standalone Installer in Windows</a> </li>
</ul> |
11,149,759 | Remove all non alphabetic characters from a String array in java | <p>I'm trying to write a method that removes all non alphabetic characters from a Java <code>String[]</code> and then convert the String to an lower case string. I've tried using regular expression to replace the occurence of all non alphabetic characters by <code>""</code> .However, the output that I am getting is not... | 11,149,783 | 9 | 1 | null | 2012-06-22 03:21:34.827 UTC | 8 | 2021-06-07 03:50:06.36 UTC | 2018-11-19 18:32:47.34 UTC | null | 1,475,228 | null | 1,148,918 | null | 1 | 23 | java|regex|string | 98,779 | <p>The problem is your changes are not being stored because Strings are <a href="https://stackoverflow.com/questions/279507/what-is-meant-by-immutable">immutable</a>. Each of the <a href="http://docs.oracle.com/javase/1.4.2/docs/api/java/lang/String.html#replaceAll" rel="noreferrer">method calls</a> is returning a new ... |
11,267,309 | Importing zipped files in Mysql using command line | <p><a href="https://stackoverflow.com/q/11258811/1488173">Importing zipped files in Mysql using CMD</a></p>
<p>What is the right syntax to import sql zipped files into mysql using cmd ?</p>
<p>I am doing the following</p>
<pre><code>xz < backup.sql.gz | mysql -u root test
</code></pre>
<p>But always getting the ... | 12,154,202 | 4 | 0 | null | 2012-06-29 18:43:46.067 UTC | 12 | 2016-05-05 10:21:17.277 UTC | 2017-05-23 12:19:42.377 UTC | null | -1 | null | 1,488,173 | null | 1 | 35 | mysql|database|cmd|winzip|xz | 70,116 | <p>I got the answer from my other question.
This is the command to import zipped file when you are using 7zip</p>
<blockquote>
<p>7z x -so backup.7z | mysql -u root test</p>
</blockquote>
<p>x is the extraction command</p>
<p><code>-so</code> option makes 7-zip write to stdout</p> |
11,274,906 | Play RTSP streaming in an Android application | <p>I am trying to develop an Android based application, which can play video from a live stream. This live stream is produced using <a href="https://en.wikipedia.org/wiki/Wowza_Streaming_Engine">Wowza Media Server</a>.</p>
<p>The URL is:</p>
<pre><code>rtsp://tv.hindiworldtv.com:1935/live/getpun
</code></pre>
<p>I h... | 12,833,897 | 6 | 5 | null | 2012-06-30 14:33:37.75 UTC | 16 | 2021-03-24 12:55:25.667 UTC | 2015-01-02 16:28:28.15 UTC | null | 63,550 | null | 1,447,054 | null | 1 | 36 | android|streaming|live|rtsp|wowza | 102,368 | <p>I found the solution. Transmission should be within the preferred setting by Android. For more details, see <em><a href="http://developer.android.com/guide/appendix/media-formats.html" rel="nofollow">Supported Media Formats</a></em>.</p> |
11,274,864 | What does 'qualified' mean in 'import qualified Data.List' statement? | <p>I understand <code>import Data.List</code>.</p>
<p>But what does <code>qualified</code> mean in the statement <code>import qualified Data.List</code>?</p> | 11,274,880 | 3 | 0 | null | 2012-06-30 14:28:58.21 UTC | 9 | 2019-12-03 16:13:45.687 UTC | 2019-12-03 16:13:45.687 UTC | null | 775,954 | null | 1,417,244 | null | 1 | 56 | haskell | 10,729 | <p>A qualified import makes the imported entities available only in qualified form, e.g.</p>
<pre><code>import qualified Data.List
result :: [Int]
result = Data.List.sort [3,1,2,4]
</code></pre>
<p>With just <code>import Data.List</code>, the entities are available in qualified form and in unqualified form. Usually,... |
12,755,945 | Jquery and HTML FormData returns "Uncaught TypeError: Illegal invocation" | <p>I'm using this script to upload my image files: <a href="http://jsfiddle.net/eHmSr/" rel="noreferrer">http://jsfiddle.net/eHmSr/</a></p>
<pre><code>$('.uploader input:file').on('change', function() {
$this = $(this);
$('.alert').remove();
$.each($this[0].files, function(key, file) {
$('.files').append('... | 12,756,023 | 5 | 3 | null | 2012-10-06 01:36:27.283 UTC | 11 | 2020-11-29 15:58:13.353 UTC | null | null | null | null | 977,687 | null | 1 | 86 | jquery|ajax|html|upload | 123,582 | <p>jQuery processes the <code>data</code> attribute and converts the values into strings.</p>
<p><a href="http://api.jquery.com/jQuery.ajax/" rel="noreferrer">Adding <code>processData: false</code></a> to your options object fixes the error, but I'm not sure if it fixes the problem.</p>
<p><strong>Demo: <a href="http... |
17,031,999 | How to pass user credentials to web service? | <p>I am consuming a webservice using WSDL in windows application. When I try to use method, i get the following error:-</p>
<blockquote>
<p>The HTTP request is unauthorized with client authentication scheme
'Anonymous'. The authentication header received from the server was '"</p>
<p>{"The remote server retur... | 17,093,801 | 2 | 2 | null | 2013-06-10 20:11:49.447 UTC | 6 | 2013-06-13 17:52:25.73 UTC | 2013-06-10 20:19:15.15 UTC | null | 1,327,064 | null | 1,327,064 | null | 1 | 13 | c#|winforms|web-services | 62,149 | <p>Here is the how it is working for me:-</p>
<p>Config file setting looks like this:-</p>
<pre><code><configuration>
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="bindingName" >
<security mode="TransportCredentialO... |
16,931,895 | Exact number of bins in Histogram in R | <p>I'm having trouble making a histogram in R. The problem is that I tell it to make 5 bins but it makes 4 and I tell to make 5 and it makes 8 of them.</p>
<pre><code>data <- c(5.28, 14.64, 37.25, 78.9, 44.92, 8.96, 19.22, 34.81, 33.89, 24.28, 6.5, 4.32, 2.77, 17.6, 33.26, 52.78, 5.98, 22.48, 20.11, 65.74, 35.73, 5... | 16,932,344 | 5 | 0 | null | 2013-06-05 05:02:19.48 UTC | 9 | 2020-04-15 20:23:23.183 UTC | 2014-04-27 14:34:32.257 UTC | null | 2,091,025 | null | 645,608 | null | 1 | 17 | r|statistics|histogram | 65,995 | <p>Use the breaks argument:</p>
<pre><code>hist(data, breaks=seq(0,80,l=6),
freq=FALSE,col="orange",main="Histogram",
xlab="x",ylab="f(x)",yaxs="i",xaxs="i")
</code></pre>
<p><img src="https://i.stack.imgur.com/BB0Yt.png" alt="enter image description here"></p> |
16,749,121 | What does `<>` mean in Python? | <p>I'm trying to use in Python 3.3 an old library (dating from 2003!). When I import it, Python throws me an error because there are <code><></code> signs in the source file, e.g.:</p>
<pre><code>if (cnum < 1000 and nnum <> 1000 and ntext[-1] <> "s":
...
</code></pre>
<p>I guess it's a now-ab... | 16,749,135 | 5 | 4 | null | 2013-05-25 11:33:54.893 UTC | 11 | 2021-10-28 03:47:54.05 UTC | 2013-05-26 04:31:07.217 UTC | null | 319,931 | null | 2,002,452 | null | 1 | 67 | python|syntax|operators|python-2.x | 78,005 | <p>It means not equal to. It was taken from <code>ABC</code> (python's predecessor) see <a href="http://homepages.cwi.nl/%7Esteven/abc/qr.html#TESTS" rel="noreferrer">here</a>:</p>
<blockquote>
<p><code>x < y, x <= y, x >= y, x > y, x = y, x <> y, 0 <= d < 10</code></p>
<p>Order tests (<code><... |
25,860,975 | Send Email through Asp.Net Web Api | <p>My client want to send E-mail through asp.net Web API. I am new in web services and have 0 knowledge of this please guide me how to achieve this task and if anyone can provide the code, there must be some web service available like this.</p>
<pre><code>using (MailMessage mm = new MailMessage(txtEmail.Text, txtTo.Te... | 25,861,230 | 2 | 5 | null | 2014-09-16 04:59:45.103 UTC | 1 | 2015-04-06 07:43:43.973 UTC | 2014-09-16 05:15:16.85 UTC | null | 2,126,088 | null | 2,126,088 | null | 1 | 3 | c#|asp.net|email|asp.net-web-api | 43,355 | <p>The .NET mail API sends emails via SMTP. The ASP.NET Web API allows you to host a REST interface.</p>
<p>You said you know how to program with both, so do that.</p>
<p>Create your Web API method which receives the necessary arguments, exactly like you would for a normal method that will do your emailing duties for... |
25,680,269 | Why is the word `false` written blue and the word `FALSE` written purple in Visual Studio? | <p>Why does Visual Studio change the word color depending on the way it is entered:</p>
<p><code>false</code> with blue, but <code>FALSE</code> with purple.<br>
<code>true</code> with blue but <code>TRUE</code> with purple.</p>
<p>Is there any difference in the meaning of them and if yes what is it?</p> | 25,680,325 | 3 | 8 | null | 2014-09-05 07:01:38.54 UTC | 0 | 2014-12-10 20:43:37.293 UTC | 2014-09-05 10:19:02.587 UTC | null | 445,517 | null | 2,376,693 | null | 1 | 29 | c++|visual-studio|ide|syntax-highlighting | 4,237 | <p><code>true</code> and <code>false</code> are <em>keywords</em> in C++ so your IDE (not the compiler) is painting them blue.</p>
<p>TRUE and FALSE are often defined by various headers, primarily for compatibility with C and older C++ compilers where <code>true</code> and <code>false</code> are <strong>not</strong> k... |
57,770,464 | Android Studio Error "Installation did not succeed. The application could not be installed. Installation failed due to: 'null'" | <p>I am trying to run my app on my Xiaomi RedMi S2 from Android Studio 3.5. It throws an error while installing the app on the phone:</p>
<blockquote>
<p>Installation did not succeed.<br />
The application could not be installed.<br />
Installation failed due to: 'null'</p>
</blockquote>
<p>REAL DEVICE: XIAOMI REDMI S2... | 58,492,367 | 27 | 3 | null | 2019-09-03 11:09:49.863 UTC | 2 | 2022-09-01 06:48:33.733 UTC | 2022-03-25 16:05:50.44 UTC | null | 10,749,567 | null | 1,906,738 | null | 1 | 24 | android|android-studio|apk|failed-installation|xiaomi | 93,181 | <p>I had the Same issue on a MAC, this is how I solve it,
note: I was tried the method that mention @Manoj Kumar,</p>
<p>Un check this field in Preferences/Build,Execution,Deployment/Debugger
<img src="https://i.stack.imgur.com/wVIE9.png" alt="" /></p> |
4,745,923 | prevent div moving on window resize | <p>I have a page with two divs "list_events" and "right_content" one next to each other.
When I resize the window "right_content" moves down "list_events" but i dont want that!
I dont want those two divs to move neither to scale down on window resizement..how can I achieve that?</p>
<p>this is the code </p>
<pre><cod... | 7,466,816 | 2 | 0 | null | 2011-01-20 10:25:55.043 UTC | 2 | 2011-09-19 05:32:44.493 UTC | null | null | null | null | 505,762 | null | 1 | 14 | html|resize|window|position | 43,825 | <p>first add a parent div/wrap and put those two divs of yours into it.</p>
<p>like so:</p>
<pre><code><div id="wrap">
<div id="list_events"></div>
<div id="right_content"></div>
</div>
</code></pre>
<p>then you can try the </p>
<p>min-width(px/ems/ etc) on the parent/wra... |
70,374,005 | Invalid options object. Dev Server has been initialized using an options object that does not match the API schema | <p>I have been stock on this error on my project when I add <code>"proxy": "http://localhost:6000"</code>
in my package.json.</p>
<p>This is the error response after yarn start.</p>
<blockquote>
<p>Invalid options object. Dev Server has been initialized using an
options object that does not match th... | 70,413,065 | 18 | 3 | null | 2021-12-16 04:57:13.54 UTC | 3 | 2022-09-22 17:46:29.143 UTC | 2021-12-16 06:01:55.78 UTC | null | 8,690,857 | null | 11,194,137 | null | 1 | 37 | node.js|reactjs|package.json | 55,023 | <p>Here is a workaround. Delete <strong>"proxy": "http://localhost:6000"</strong>. Install package http-proxy-middleware with command <strong>npm install http-proxy-middleware --save</strong>. Create a file setupProxy.js inside your src folder or the root of your folder. Add these lines inside:</p>
... |
10,167,266 | How to set cornerRadius for only top-left and top-right corner of a UIView? | <p>Is there a way to set <code>cornerRadius</code> for only top-left and top-right corner of a <code>UIView</code>?</p>
<p>I tried the following, but it end up not seeing the view anymore.</p>
<pre><code>UIView *view = [[UIView alloc] initWithFrame:frame];
CALayer *layer = [CALayer layer];
UIBezierPath *shadowPath =... | 41,197,790 | 30 | 7 | null | 2012-04-15 23:58:26.2 UTC | 171 | 2022-05-09 15:54:41.353 UTC | 2018-09-21 13:46:33.157 UTC | null | 1,033,581 | null | 180,862 | null | 1 | 521 | ios|cocoa-touch|uiview|cornerradius | 353,010 | <p>Pay attention to the fact that if you have layout constraints attached to it, you must refresh this as follows in your UIView subclass:</p>
<pre><code>override func layoutSubviews() {
super.layoutSubviews()
roundCorners(corners: [.topLeft, .topRight], radius: 3.0)
}
</code></pre>
<p>If you don't do that it w... |
10,090,949 | Accessing to enum values by '::' in C++ | <p>I have class like following: </p>
<pre><code>class Car
{
public:
Car();
// Some functions and members and <b>enums</b>
enum Color
{
Red,
Blue,
Black
};
Color getColor();
void setColor(Color);
private:
Color myColor;
}
</code></pre>... | 10,092,148 | 3 | 3 | null | 2012-04-10 14:46:46.05 UTC | 3 | 2018-12-13 15:27:06.047 UTC | 2012-04-10 14:51:02.593 UTC | null | 11,343 | null | 1,105,597 | null | 1 | 14 | c++|enums | 66,419 | <p>In current C++ (i.e. C++11 and beyond), you <em>can</em> already access enum values like that:</p>
<pre><code>enum Color { Red };
Color c = Color::Red;
Color d = Red;
</code></pre>
<p>You can go further and enforce the use of this notation:</p>
<pre><code>enum class Color { Red };
Color c = Color::Red;
// Color d... |
10,114,526 | How to build a Meteor smart package | <p>How can one build a <a href="http://docs.meteor.com/#packages" rel="noreferrer">Meteor smart package</a> that would show up in <code>meteor list</code>?</p>
<p>Building <a href="http://atmosphere.meteor.com" rel="noreferrer">Atmosphere</a> packages is reasonably well <a href="https://atmosphere.meteor.com/wtf/packa... | 23,950,265 | 5 | 1 | null | 2012-04-11 21:53:45.977 UTC | 17 | 2015-07-20 03:45:46.133 UTC | 2014-06-04 20:53:38.477 UTC | null | 311,744 | null | 258,689 | null | 1 | 42 | meteor|package | 19,253 | <p>Meteor now supports a <strong><code>create --package</code></strong> command.</p>
<p>See <a href="http://docs.meteor.com/#/full/writingpackages">the meteor docs</a>.</p>
<p>Example (substitute your own <a href="https://www.meteor.com/services/developer-accounts">meteor developer account</a> for "cunneen"):</p>
<p... |
9,822,313 | Remote connect to clearDB heroku database | <p>How can i perform a remote connect to ClearDB MySQL database on heroku using for example MySQL Query Browser. Where to get url, port, login and password?</p> | 10,357,757 | 13 | 0 | null | 2012-03-22 12:29:07.443 UTC | 39 | 2021-11-02 07:09:08.563 UTC | null | null | null | null | 1,022,108 | null | 1 | 119 | mysql|database|heroku|database-connection | 97,485 | <p>In heroku website, go to My Apps and select the app on which you have installed ClearDB. </p>
<p>On the top corner click on <strong>Addons</strong> and then select <strong>ClearDB MySQL Database</strong>.
Once there, click on your database and choose the '<strong>Endpoint Information</strong>' tab. There you see yo... |
9,945,409 | How do I fix the error 'Named Pipes Provider, error 40 - Could not open a connection to' SQL Server'? | <p>I can't seem to connect to my database from a site. I get this error:</p>
<blockquote>
<p>Named Pipes Provider, error: 40 - Could not open a connection to SQL Server</p>
</blockquote>
<p>I tried using the local IP address to connect as well as a public one. I've tried:</p>
<ol>
<li>Yes, the site can communicate... | 34,573,742 | 32 | 6 | null | 2012-03-30 14:56:12.107 UTC | 43 | 2022-09-20 15:25:20.66 UTC | 2013-01-06 10:27:27.267 UTC | null | 63,550 | null | 584,765 | null | 1 | 174 | sql-server|sql-server-2005|database-connectivity | 787,351 | <p>Solving this problem is very easy:</p>
<ol>
<li>Go to control panel.</li>
<li>search for services.</li>
<li>Open Local services window from your search results</li>
<li>Restart your MSSQLSERVER service.</li>
</ol>
<p>Screenshot of the steps:</p>
<p><img src="https://i.stack.imgur.com/KAcPr.png" alt="Screenshot of... |
7,765,548 | Get a single value from dataSet in asp.net | <p>I am doing a query to get Title and RespondBY from the tbl_message table, I want to decrypt the Title before I do databinding to the repeater. How can I access the title value before doing databind.</p>
<pre><code>string MysqlStatement = "SELECT Title, RespondBy FROM tbl_message WHERE tbl_message.MsgID = @MsgID";... | 7,765,619 | 3 | 1 | null | 2011-10-14 09:20:14.037 UTC | 1 | 2015-09-24 21:41:05.79 UTC | 2011-11-14 22:49:00.51 UTC | null | 3,043 | null | 931,064 | null | 1 | 12 | c#|asp.net|dataset | 88,283 | <p>Probably, like following code part you can get the Title and try this coding before</p>
<pre><code>rptList.DataSource = ds;
rptList.DataBind();
</code></pre>
<p>The following code part can get the Title from <a href="http://msdn.microsoft.com/en-us/library/system.data.dataset%28v=vs.71%29.aspx" rel="noreferrer... |
11,520,189 | Difference between shutdown and shutdownNow of Executor Service | <p>I want to know the basic difference between <code>shutdown()</code> and <code>shutdownNow()</code> for shutting down the <code>Executor Service</code>?</p>
<p><strong><em>As far as I understood:</em></strong> </p>
<p><code>shutdown()</code> should be used for <strong>graceful</strong> shutdown which means all task... | 11,520,233 | 3 | 6 | null | 2012-07-17 10:02:09.293 UTC | 38 | 2020-03-24 18:25:35.767 UTC | 2020-03-24 18:25:35.767 UTC | null | 1,498,427 | null | 1,527,084 | null | 1 | 82 | java|java.util.concurrent | 59,261 | <p>In summary, you can think of it that way:</p>
<ul>
<li><code>shutdown()</code> will just tell the executor service that it can't accept new tasks, but the already submitted tasks continue to run</li>
<li><code>shutdownNow()</code> will do the same AND will <strong>try to cancel</strong> the already submitted tasks ... |
3,462,995 | jQuery - keydown / keypress /keyup ENTERKEY detection? | <p>Trying to get jQuery to detect enter input, but space and other keys are detected, enter isn't detected. What's wrong below: </p>
<pre><code>$("#entersomething").keyup(function(e) {
alert("up");
var code = (e.keyCode ? e.keyCode : e.which);
if (code==13) {
e.preventDefault();
}
if (cod... | 3,463,044 | 4 | 2 | null | 2010-08-11 21:28:52.313 UTC | 2 | 2020-02-06 15:42:35.26 UTC | 2012-03-14 02:51:58.03 UTC | null | 486,233 | null | 357,189 | null | 1 | 49 | jquery | 111,036 | <p>JavaScript/jQuery</p>
<pre><code>$("#entersomething").keyup(function(e){
var code = e.key; // recommended to use e.key, it's normalized across devices and languages
if(code==="Enter") e.preventDefault();
if(code===" " || code==="Enter" || code===","|| code===";"){
$("#displaysomething").html($(... |
3,770,100 | How-to init a ListPreference to one of its values | <p>I'm trying to set a defaultValue to a ListPreference item.</p>
<p>Here is an sample of my preference.xml file:</p>
<pre><code><ListPreference android:key="notification_delay"
android:title="@string/settings_push_delay"
android:entries="@array/settings_push_delay_human_value"
android:entryValues="@ar... | 3,968,752 | 4 | 0 | null | 2010-09-22 14:11:42.047 UTC | 12 | 2014-01-29 22:24:18.937 UTC | 2011-08-08 21:22:49.053 UTC | null | 39,709 | null | 384,483 | null | 1 | 72 | android | 43,236 | <p>You need to specify the <em>value</em>. So to get the first entry selected by default specify <code>defaultValue="300"</code> in your example.</p> |
3,799,935 | Sort the rows according to the order specified in WHERE IN clause | <p>I have something like:</p>
<pre><code>SELECT *
FROM table
WHERE id IN (118, 17, 113, 23, 72);
</code></pre>
<p>It returns the rows ordered by ID, ascending. Is there a way to get back the rows in the order specified in the <code>IN</code> clause?</p> | 3,799,966 | 6 | 0 | null | 2010-09-26 21:39:35.013 UTC | 16 | 2022-02-04 12:31:39.55 UTC | 2022-02-04 12:31:39.55 UTC | null | 87,015 | null | 378,861 | null | 1 | 58 | mysql|sql|sql-order-by | 60,166 | <p>You should use "ORDER BY <a href="https://dev.mysql.com/doc/refman/8.0/en/string-functions.html#function_field" rel="noreferrer">FIELD</a>". So, for instance:</p>
<pre><code>SELECT * FROM table WHERE id IN (118,17,113,23,72)
ORDER BY FIELD(id,118,17,113,23,72)
</code></pre> |
3,345,857 | How to get a list of IP connected in same network (subnet) using Java | <p>How do I get list of IP addresses for devices connected to my same subnet using Java?</p> | 3,345,981 | 8 | 2 | null | 2010-07-27 16:41:26.207 UTC | 24 | 2021-02-19 20:55:59.33 UTC | 2016-01-05 21:39:41.477 UTC | null | 2,676,531 | null | 260,990 | null | 1 | 43 | java|networking | 80,748 | <p>this should work when the hosts on your network react to ICMP packages (ping) (>JDK 5):</p>
<pre><code>public void checkHosts(String subnet){
int timeout=1000;
for (int i=1;i<255;i++){
String host=subnet + "." + i;
if (InetAddress.getByName(host).isReachable(timeout)){
System.out.p... |
3,345,348 | How to specify a min but no max decimal using the range data annotation attribute? | <p>I would like to specify that a decimal field for a price must be >= 0 but I don't really want to impose a max value.</p>
<p>Here's what I have so far...I'm not sure what the correct way to do this is.</p>
<pre><code>[Range(typeof(decimal), "0", "??"] public decimal Price { get; set; }
</code></pre> | 3,352,614 | 10 | 1 | null | 2010-07-27 15:41:17.327 UTC | 16 | 2020-05-19 16:29:48.66 UTC | 2015-11-05 17:00:29.577 UTC | null | 4,370,109 | null | 169,867 | null | 1 | 200 | c#|.net|asp.net-mvc|data-annotations | 206,272 | <p>It seems there's no choice but to put in the max value manually. I was hoping there was some type of overload where you didn't need to specify one.</p>
<pre><code>[Range(typeof(decimal), "0", "79228162514264337593543950335")]
public decimal Price { get; set; }
</code></pre> |
3,762,561 | How to animate the background color of a UILabel? | <p>This looks like it should work, but doesn't. The color turns green at once.</p>
<pre><code>self.labelCorrection.backgroundColor = [UIColor whiteColor];
[UIView animateWithDuration:2.0 animations:^{
self.labelCorrection.backgroundColor = [UIColor greenColor];
}];
</code></pre> | 3,762,950 | 11 | 1 | null | 2010-09-21 16:51:15.063 UTC | 17 | 2018-06-25 02:25:57.44 UTC | 2017-01-19 00:36:52.183 UTC | null | 3,681,880 | null | 136 | null | 1 | 81 | ios|iphone|core-animation | 52,758 | <p>I can't find it documented anywhere, but it appears the <code>backgroundColor</code> property of <code>UILabel</code> is not animatable, as your code works fine with a vanilla <code>UIView</code>. This hack appears to work, however, as long as you don't set the background color of the label view itself:</p>
<pre><c... |
3,921,616 | Leaking this in constructor warning | <p>I'd like to avoid (most of the) warnings of Netbeans 6.9.1, and I have a problem with the <code>'Leaking this in constructor'</code> warning.</p>
<p>I understand the problem, calling a method in the constructor and passing "<code>this</code>" is dangerous, since "<code>this</code>" may not have been fully initializ... | 3,921,636 | 11 | 3 | null | 2010-10-13 07:36:17.54 UTC | 17 | 2022-01-20 18:01:15.887 UTC | 2017-01-01 21:32:05.923 UTC | null | 179,850 | null | 21,348 | null | 1 | 89 | java|netbeans|constructor|this|netbeans-6.9 | 58,341 | <p>Since you make sure to put your <code>instances.add(this)</code> at the end of the constructor you <strike>should IMHO be safe to tell the compiler to simply suppress the warning</strike> <strong>(*)</strong>. A warning, by its nature, doesn't necessarily mean that there's something wrong, it just requires your atte... |
3,985,619 | How to calculate a logistic sigmoid function in Python? | <p>This is a logistic sigmoid function:</p>
<p><img src="https://i.stack.imgur.com/SUuRi.png" alt="enter image description here"></p>
<p>I know x. How can I calculate F(x) in Python now?</p>
<p>Let's say x = 0.458.</p>
<p>F(x) = ?</p> | 3,985,630 | 16 | 0 | null | 2010-10-21 08:36:07.707 UTC | 42 | 2021-07-25 22:22:43.65 UTC | 2020-01-31 13:24:50.503 UTC | null | 10,407,023 | null | 95,944 | null | 1 | 204 | python|sigmoid | 404,634 | <p>This should do it:</p>
<pre><code>import math
def sigmoid(x):
return 1 / (1 + math.exp(-x))
</code></pre>
<p>And now you can test it by calling:</p>
<pre><code>>>> sigmoid(0.458)
0.61253961344091512
</code></pre>
<p><strong>Update</strong>: Note that the above was mainly intended as a straight one-to... |
8,311,090 | Why not use heap sort always | <p>The <strong>Heap Sort</strong> sorting algorithm seems to have a worst case complexity of O(nlogn), and uses O(1) space for the sorting operation.</p>
<p>This seems better than most sorting algorithms. Then, why wouldn't one use Heap Sort always as a sorting algorithm (and why do folks use sorting mechanisms like M... | 8,312,128 | 5 | 7 | null | 2011-11-29 12:57:30.323 UTC | 30 | 2014-06-16 07:40:30.357 UTC | 2011-11-29 13:11:44.273 UTC | null | 946,312 | null | 946,312 | null | 1 | 73 | algorithm|sorting|heapsort | 50,201 | <p>A stable sort maintains the relative order of items that have the same key. For example, imagine your data set contains records with an employee id and a name. The initial order is:</p>
<pre><code>1, Jim
2, George
3, Jim
4, Sally
5, George
</code></pre>
<p>You want to sort by name. A stable sort will arrange the i... |
8,227,820 | Alert Dialog Two Buttons | <p>Hello all i have a simple problem i have a alertDialog and i want it to show two buttons i have searched here but it seems the options before don't work anymore and are deprecated.</p>
<p>Anyone know the new way of doing this you can see my code below that doesn't work.</p>
<pre><code> Button share = (Button) fin... | 8,227,964 | 7 | 0 | null | 2011-11-22 13:45:16.517 UTC | 17 | 2021-02-04 06:56:02.297 UTC | 2014-09-30 03:44:31.66 UTC | null | 1,075,936 | null | 993,346 | null | 1 | 41 | android|android-alertdialog | 87,851 | <p>try this</p>
<pre><code>public void showDialog(Activity activity, String title, CharSequence message) {
AlertDialog.Builder builder = new AlertDialog.Builder(activity);
if (title != null) builder.setTitle(title);
builder.setMessage(message);
builder.setPositiveButton("OK", null);
builder.setNe... |
4,552,893 | How to copy as admin in windows7 | <p>My requirement is to copy the updated jar into our application directory in Program Files when a new update is available. I face an access denied problem while copying in Windows 7. Can someone kindly help me find out how to copy the file as admin? </p>
<p>Any alternate solution for installing the update is welcome... | 4,552,957 | 3 | 4 | null | 2010-12-29 09:25:28.28 UTC | null | 2013-11-12 14:13:21.253 UTC | 2012-06-09 07:34:21.247 UTC | null | 306,651 | null | 556,944 | null | 1 | 4 | java|windows-7|permissions|admin | 38,659 | <p>As a one time action, you could give additional permissions for your application directory for the specified user.</p>
<ul>
<li>From Windows Explorer, right-click specified folder. </li>
<li>Goto Properties</li>
<li>Click on Security tab</li>
<li>Click on Edit...</li>
<li>Change permission as suitable</li>
</ul> |
4,136,632 | How to kill a child thread with Ctrl+C? | <p>I would like to stop the execution of a process with <kbd>Ctrl</kbd>+<kbd>C</kbd> in Python. But I have read somewhere that <code>KeyboardInterrupt</code> exceptions are only raised in the main thread. I have also read that the main thread is blocked while the child thread executes. So how can I kill the child threa... | 4,749,550 | 3 | 2 | null | 2010-11-09 17:30:52.687 UTC | 8 | 2022-02-04 22:04:36.927 UTC | 2021-07-07 14:28:07.993 UTC | null | 2,326,961 | null | 304,932 | null | 1 | 22 | python|multithreading|kill|keyboardinterrupt | 38,687 | <p>The problem there is that you are using <code>thread1.join()</code>, which will cause your program to wait until that thread finishes to continue.</p>
<p>The signals will always be caught by the main process, because it's the one that receives the signals, it's the process that has threads.</p>
<p>Doing it as you ... |
4,387,419 | Why does ArrayList have "implements List"? | <p>In the Collection Framework we have the interface <code>List</code> and the class <code>AbstractList</code>:</p>
<pre><code>AbstractList implements List
</code></pre>
<p>And <code>ArrayList</code> extends <code>AbstractList</code> and </p>
<pre><code>implements List
</code></pre>
<p>My question: why does <code>A... | 4,387,445 | 3 | 0 | null | 2010-12-08 12:29:56.903 UTC | 10 | 2012-12-20 14:12:25.667 UTC | 2012-12-20 14:12:25.667 UTC | null | 40,342 | null | 471,011 | null | 1 | 41 | java|collections | 7,458 | <p>Yes. It could've been omitted. But thus it is immediately visible that it is a <code>List</code>. Otherwise an extra click through the code / documentation would be required. I think that's the reason - clarity.</p>
<p>And to add what Joeri Hendrickx commented - it is for the purpose of showing that <code>ArrayList... |
4,047,427 | How does async works in C#? | <p>Microsoft announced the <a href="http://msdn.microsoft.com/en-us/vstudio/async.aspx" rel="nofollow noreferrer">Visual Studio Async CTP</a> today (October 28, 2010) that introduces the <code>async</code> and <code>await</code> keywords into C#/VB for asynchronous method execution.</p>
<p>First I thought that the comp... | 4,047,607 | 3 | 0 | null | 2010-10-28 21:47:43.393 UTC | 20 | 2022-07-18 20:06:05.313 UTC | 2021-11-01 11:33:18.33 UTC | null | 11,178,549 | null | 40,347 | null | 1 | 47 | c#|.net|vb.net|asynchronous|async-await | 14,482 | <p>It works similarly to the <code>yield return</code> keyword in C# 2.0.</p>
<p>An asynchronous method is not actually an ordinary sequential method. It is compiled into a state machine (an object) with some state (local variables are turned into fields of the object). Each block of code between two uses of <code>awa... |
4,669,704 | How do I install the Visual Web Developer feature for Visual Studio 2010 | <p>I have Visual Studio 2010 Premium installed, and I want to install the Silverlight 4 SDK.</p>
<p>The SDK says that it requires the Visual Web Developer feature for Visual Studio 2010. Any idea as to how to install, or activate this feature?</p>
<hr>
<p><img src="https://i.stack.imgur.com/orCLl.png" alt="enter im... | 4,669,738 | 4 | 1 | null | 2011-01-12 14:09:51.41 UTC | 2 | 2017-03-08 07:49:59.967 UTC | 2013-03-26 11:57:29.337 UTC | null | 284,795 | null | 394,157 | null | 1 | 33 | visual-studio|visual-studio-2010|visual-web-developer | 53,894 | <p>Run the Visual Studio installer and double check the installed components. Make sure Web Developer is enabled (Web Developer should be part of the standard installation for VS 2010 Premium) and then hit OK.</p>
<p>Once the installation has completed try installing the Silverlight SDK again.</p> |
4,492,678 | Swap rows with columns (transposition) of a matrix in javascript | <p>For instance I have a matrix like this:</p>
<pre><code>|1 2 3|
|4 5 6|
|7 8 9|
</code></pre>
<p>and I need it to convert into a matrix like this:</p>
<pre><code>|1 4 7|
|2 5 8|
|3 6 9|
</code></pre>
<p>What is the best and optimal way to achieve this goal?</p> | 4,492,703 | 5 | 0 | null | 2010-12-20 18:31:41.15 UTC | 8 | 2019-05-24 18:56:45.953 UTC | 2015-10-10 23:03:08.527 UTC | null | 3,183,756 | null | 282,887 | null | 1 | 35 | javascript|matrix|multidimensional-array|swap | 62,072 | <p>See article: <a href="http://www.shamasis.net/2010/02/transpose-an-array-in-javascript-and-jquery" rel="noreferrer">Transpose An Array In JavaScript and jQuery</a></p>
<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code... |
4,050,381 | Regular expression for checking if capital letters are found consecutively in a string | <p>I want to know the regexp for the following case:</p>
<p>The string should contain only alphabetic letters. It must start with a capital letter followed by small letter. Then it can be small letters or capital letters.</p>
<pre><code>^[A-Z][a-z][A-Za-z]*$
</code></pre>
<p>But the string must also not contain any con... | 4,052,496 | 5 | 0 | null | 2010-10-29 08:54:06.347 UTC | 29 | 2021-11-10 01:45:50.787 UTC | 2021-11-10 01:34:13.33 UTC | null | 63,550 | null | 454,660 | null | 1 | 78 | regex|capitalize | 251,956 | <p>Take a look at <a href="https://stackoverflow.com/questions/4050381/regular-expression-for-checking-if-capital-letters-are-found-consecutively-in-a#answer-4052294">tchrist's answer</a>, especially if you develop for the web or something more "international".</p>
<p><a href="https://stackoverflow.com/questi... |
4,641,476 | Using Dynamic Memory allocation for arrays | <p>How am I supposed to use dynamic memory allocations for arrays?</p>
<p>For example here is the following array in which i read individual words from a .txt file and save them word by word in the array:</p>
<p>Code:</p>
<pre><code>char words[1000][15];
</code></pre>
<p>Here 1000 defines the number of words the ar... | 4,641,532 | 8 | 0 | null | 2011-01-09 20:10:05.427 UTC | 5 | 2015-04-01 06:27:24.053 UTC | 2011-01-09 20:13:35.59 UTC | null | 260,990 | null | 569,085 | null | 1 | 13 | c|arrays|memory|dynamic-memory-allocation | 80,580 | <p>You use pointers.</p>
<p>Specifically, you use a pointer to an address, and using a standard c library function calls, you ask the operating system to expand the heap to allow you to store what you need to.</p>
<p>Now, it might refuse, which you will need to handle.</p>
<p>The next question becomes - how do you a... |
4,389,572 | How to fetch a non-ascii url with urlopen? | <p>I need to fetch data from a URL with non-ascii characters but urllib2.urlopen refuses to open the resource and raises:</p>
<pre><code>UnicodeEncodeError: 'ascii' codec can't encode character u'\u0131' in position 26: ordinal not in range(128)
</code></pre>
<p>I know the URL is not standards compliant but I have no... | 4,391,299 | 10 | 0 | null | 2010-12-08 16:06:33.36 UTC | 21 | 2021-10-17 06:18:56.15 UTC | 2021-04-25 16:05:07.48 UTC | null | 355,230 | null | 287,923 | null | 1 | 51 | python|unicode|urllib2|non-ascii-characters|urlopen | 34,232 | <p>Strictly speaking URIs can't contain non-ASCII characters; what you have there is an <a href="http://en.wikipedia.org/wiki/Internationalized_Resource_Identifier">IRI</a>.</p>
<p>To convert an IRI to a plain ASCII URI:</p>
<ul>
<li><p>non-ASCII characters in the hostname part of the address have to be encoded using... |
14,540,262 | How does git push work with android's repo tool? | <p>I'm used to using <code>git</code> with a single repository. However, I've lately been dabbling with Android development and am trying to wrap my head around <code>repo</code>. I have set up some custom git repos by creating xmls in the <code>.repo/local_manifests</code> directory (I'm using repo 1.19) and <code>rep... | 14,545,270 | 1 | 0 | null | 2013-01-26 18:42:51.137 UTC | 9 | 2013-01-27 07:11:54.47 UTC | null | null | null | null | 817,950 | null | 1 | 13 | android|git|github|gerrit|repository | 10,973 | <p>Technically, if you do</p>
<pre><code>git checkout origin/master
</code></pre>
<p>you immediately get into detached HEAD state.</p>
<p>For better or worse, this is exactly what <code>repo sync</code> does by default - such that every one of your repositories listed in manifest is in detached HEAD state after fres... |
14,707,742 | How to indent my code in codeblocks? | <p>What are the best code blocks short cuts ? Also is there some way we can directly indent all our code ? In addition how can we move through the active tabs in codeblocks ? </p> | 14,711,209 | 6 | 1 | null | 2013-02-05 12:37:01.21 UTC | 4 | 2020-11-17 18:44:58.527 UTC | null | null | null | null | 1,737,817 | null | 1 | 15 | codeblocks | 65,135 | <p>You (these are the default settings I believe) can select a block of code and press the <kbd>Tab</kbd> key. This will <strong>indent</strong> the entire block. </p>
<p>So for indenting a whole file: <kbd>Ctrl</kbd> + <kbd>A</kbd>, then <kbd>Tab</kbd>. </p>
<p>In addition, you can use <kbd>Shift</kbd> + <kbd>Tab</k... |
14,904,776 | Parse JavaScript with jsoup | <p>In an <code>HTML</code> page, I want to pick the value of a <code>javascript</code> variable.<br />
Below is the snippet of <code>HTML</code> page:</p>
<pre><code><input id="hidval" value="" type="hidden">
<form method="post" style="padding: 0px;margin: 0px;&quo... | 14,925,848 | 2 | 3 | null | 2013-02-15 22:58:04.31 UTC | 6 | 2021-11-14 20:04:47.973 UTC | 2021-11-14 15:23:30.287 UTC | null | 8,583,692 | null | 1,175,065 | null | 1 | 16 | javascript|java|html|kotlin|jsoup | 40,576 | <p>Since jsoup isn't a javascript library you have two ways to solve this:</p>
<h2>A. Use a javascript library</h2>
<ul>
<li><p><strong>Pro:</strong></p>
<ul>
<li>Full Javascript support</li>
</ul></li>
<li><p><strong>Con:</strong></p>
<ul>
<li>Additional libraray / dependencies</li>
</ul></li>
</ul>
<h2>B. Use Js... |
14,878,706 | Merge xml files with nested elements without external libraries | <p>I am trying to merge multiple XML files together using Python and no external libraries. The XML files have nested elements.</p>
<p><strong>Sample File 1:</strong></p>
<pre><code><root>
<element1>textA</element1>
<elements>
<nested1>text now</nested1>
</elements>... | 14,879,370 | 3 | 0 | null | 2013-02-14 15:51:02.93 UTC | 13 | 2021-05-11 16:00:52.753 UTC | 2017-05-23 11:55:10.85 UTC | null | -1 | null | 1,561,176 | null | 1 | 17 | python|xml|python-2.7|elementtree | 23,317 | <p>What the code you posted is doing is combining all the elements regardless of whether or not an element with the same tag already exists. So you need to iterate over the elements and manually check and combine them the way you see fit, because it is not a standard way of handling XML files. I can't explain it better... |
14,429,703 | When to call .join() on a process? | <p>I am reading various tutorials on the multiprocessing module in Python, and am having trouble understanding why/when to call <code>process.join()</code>. For example, I stumbled across this example:</p>
<pre><code>nums = range(100000)
nprocs = 4
def worker(nums, out_q):
""" The worker function, invoked in a pr... | 14,430,044 | 3 | 3 | null | 2013-01-20 21:45:34.94 UTC | 15 | 2020-03-09 22:12:58.827 UTC | 2013-01-20 22:09:30.4 UTC | null | 815,632 | null | 1,356,561 | null | 1 | 36 | python|multiprocessing | 40,750 | <p>Try to run this:</p>
<pre><code>import math
import time
from multiprocessing import Queue
import multiprocessing
def factorize_naive(n):
factors = []
for div in range(2, int(n**.5)+1):
while not n % div:
factors.append(div)
n //= div
if n != 1:
factors.append(n)
... |
14,665,491 | Why are @Scripts and @Styles commands not be recognized in MVC4 Razor layout file? | <p>The following MVC4 Razor layout file loads several script and css bundles created in Bundle.config.</p>
<pre><code><!DOCTYPE html>
<html class="no-js" lang="en">
<head>
<meta charset="utf-8" />
<title>XXX Beta</title>
@Scripts.Render(
"~/bundles/bundle_jquery",
"~/bundl... | 14,665,528 | 7 | 0 | null | 2013-02-02 19:14:32.42 UTC | 8 | 2019-01-10 03:30:50 UTC | null | null | null | null | 94,508 | null | 1 | 41 | asp.net|asp.net-mvc|razor|asp.net-mvc-4 | 62,506 | <p>Make sure that the <code>System.Web.Optimization.dll</code> assembly has been referenced in your project and that the <code><add namespace="System.Web.Optimization"/></code> namespace has been added to your <code>~/Views/web.config</code> file (not <code>~/web.config</code> file):</p>
<pre><code><system.we... |
14,358,817 | Best practice for localization and globalization of strings and labels | <p>I'm a member of a team with more than 20 developers. Each developer works on a separate module (something near 10 modules). In each module we might have at least 50 CRUD forms, which means that we currently have near 500 <strong>add buttons</strong>, <strong>save buttons</strong>, <strong>edit buttons</strong>, etc.... | 14,359,147 | 3 | 1 | null | 2013-01-16 12:46:05.32 UTC | 48 | 2016-12-26 19:38:15.57 UTC | 2016-12-26 19:38:15.57 UTC | null | 3,100,587 | user1968030 | null | null | 1 | 129 | javascript|localization|translation|client-side|globalization | 134,771 | <p>As far as I know, there's a good library called <code>localeplanet</code> for Localization and Internationalization in JavaScript. Furthermore, I think it's native and has no dependencies to other libraries (e.g. jQuery) </p>
<p>Here's the website of library: <a href="http://www.localeplanet.com/" rel="noreferrer... |
14,541,823 | How to use concerns in Rails 4 | <p>The default Rails 4 project generator now creates the directory "concerns" under controllers and models. I have found some explanations about how to use routing concerns, but nothing about controllers or models.</p>
<p>I am pretty sure it has to do with the current "DCI trend" in the community and would like to giv... | 15,078,070 | 6 | 0 | null | 2013-01-26 21:36:27.56 UTC | 238 | 2020-03-28 23:09:45.85 UTC | 2015-12-14 10:04:37.48 UTC | null | 2,202,702 | null | 784,270 | null | 1 | 642 | ruby-on-rails|ruby-on-rails-4|dci | 246,277 | <p>So I found it out by myself. It is actually a pretty simple but powerful concept. It has to do with code reuse as in the example below. Basically, the idea is to extract common and / or context specific chunks of code in order to clean up the models and avoid them getting too fat and messy.</p>
<p>As an example, I'... |
62,793,544 | Efficient way to remove half of the duplicate items in a list | <p>If I have a list say <code>l = [1, 8, 8, 8, 1, 3, 3, 8]</code> and it's guaranteed that every element occurs an even number of times, how do I make a list with all elements of <code>l</code> now occurring <code>n/2</code> times. So since <code>1</code> occurred <code>2</code> times, it should now occur once. Since <... | 62,793,817 | 12 | 9 | null | 2020-07-08 11:14:08.523 UTC | 12 | 2020-07-30 21:25:16.063 UTC | 2020-07-22 20:16:37.083 UTC | null | 5,446,749 | null | 13,064,271 | null | 1 | 60 | python|algorithm | 11,016 | <p>If order isn't important, a way would be to get the odd or even indexes only after a sort. Those lists will be the same so you only need one of them.</p>
<pre><code>l = [1,8,8,8,1,3,3,8]
l.sort()
# Get all odd indexes
odd = l[1::2]
# Get all even indexes
even = l[::2]
print(odd)
print(odd == even)
</code></pre>
<... |
2,905,692 | PostgreSQL - How to convert seconds in a numeric field to HH:MM:SS | <p>I'm new to PostgreSQL (I have been using MS SQL for many years) and need to convert a numeric column which contains a time in seconds to HH:MM:SS format.</p>
<p>I have Googled and found that <code>to_char(interval '1000s', 'HH24:MI:SS')</code> works so I am attempting to use this with my field name:</p>
<p><code>t... | 2,905,726 | 2 | 4 | null | 2010-05-25 14:42:16.37 UTC | 9 | 2020-01-13 08:26:22.85 UTC | null | null | null | null | 243,189 | null | 1 | 32 | datetime|postgresql | 54,770 | <pre><code>SELECT TO_CHAR('1000 second'::interval, 'HH24:MI:SS')
</code></pre>
<p>or, in your case</p>
<pre><code>SELECT TO_CHAR((mycolumn || ' second')::interval, 'HH24:MI:SS')
FROM mytable
</code></pre> |
2,804,007 | selectively execute task in ssis control flow | <p>I have a SSIS package with a control flow containing a bunch of execute sql tasks in a sequence.</p>
<p>I need to check a flag for each of the tasks and run the task if it is set, if not skip and go to the next one.</p>
<p>Each of the these task executes a stored proc. So i can check in the proc and "Return" if n... | 2,804,229 | 2 | 0 | null | 2010-05-10 15:37:03.277 UTC | 1 | 2019-10-17 21:27:26.71 UTC | 2010-05-10 15:45:37.543 UTC | user65663 | null | null | 212,469 | null | 1 | 35 | sql-server|sql-server-2008|ssis | 56,469 | <p>Between your control flow tasks, click on the arrow and choose Edit. When you do this, you get a dialog that allows you to check the "constraint" (success, completion or failure) of the task, an "expression" (i.e. you can have your execute sql task return a value, store that value in a variable, and check the value... |
41,337,477 | Select non-null rows from a specific column in a DataFrame and take a sub-selection of other columns | <p>I have a dataFrame which has several coulmns, so i choosed some of its coulmns to create a variable like this <code>xtrain = df[['Age','Fare', 'Group_Size','deck', 'Pclass', 'Title' ]]</code> i want to drop from these coulmns all raws that the Survive coulmn in the main dataFrame is nan.</p> | 41,337,493 | 2 | 0 | null | 2016-12-27 00:06:47.46 UTC | 11 | 2019-03-08 22:56:48.027 UTC | 2019-03-08 22:56:48.027 UTC | null | 3,367,799 | user7308269 | null | null | 1 | 33 | python|pandas | 94,842 | <p>You can pass a boolean mask to your df based on <a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.Series.notnull.html" rel="noreferrer"><code>notnull()</code></a> of 'Survive' column and select the cols of interest:</p>
<pre><code>In [2]:
# make some data
df = pd.DataFrame(np.random.randn(5,7), ... |
35,206,125 | How can I find and update values in an array of objects? | <p>I have an array of objects. I want to find by some field, and then to change it:</p>
<pre><code>var item = {...}
var items = [{id:2}, {id:2}, {id:2}];
var foundItem = items.find(x => x.id == item.id);
foundItem = item;
</code></pre>
<p>I want it to change the original object. How? (I don't care if it will be in ... | 35,206,193 | 10 | 1 | null | 2016-02-04 16:17:40.857 UTC | 54 | 2022-07-25 21:32:23.803 UTC | 2022-01-06 13:48:51.213 UTC | null | 1,264,804 | null | 3,712,353 | null | 1 | 237 | javascript|arrays|ecmascript-6|lodash | 353,338 | <p>You can use <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex" rel="noreferrer">findIndex</a> to find the index in the array of the object and replace it as required:</p>
<pre><code>var item = {...}
var items = [{id:2}, {id:2}, {id:2}];
var foundIndex = items... |
31,240,148 | Spark specify multiple column conditions for dataframe join | <p>How to give more column conditions when joining two dataframes. For example I want to run the following :</p>
<pre><code>val Lead_all = Leads.join(Utm_Master,
Leaddetails.columns("LeadSource","Utm_Source","Utm_Medium","Utm_Campaign") ==
Utm_Master.columns("LeadSource","Utm_Source","Utm_Medium","Utm_Campai... | 31,247,623 | 9 | 0 | null | 2015-07-06 07:35:53.51 UTC | 26 | 2019-11-17 15:57:37.17 UTC | 2015-07-07 10:46:36.203 UTC | null | 1,560,062 | null | 568,109 | null | 1 | 52 | apache-spark|apache-spark-sql|rdd | 140,624 | <p>There is a Spark <a href="https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/DataFrame.scala#L514" rel="noreferrer">column/expression API join</a> for such case:</p>
<pre class="lang-scala prettyprint-override"><code>Leaddetails.join(
Utm_Master,
Leaddetails("LeadSourc... |
27,435,798 | unhashable type: 'dict' Type Error | <p>Suppose I have this dictionary:</p>
<pre><code>items = {1: {'title': u'testing123', 'description': u'testing456'},
2: {'description': u'testing123', 'description': u'testing456'},
3: {'description': u'testing123', 'description': u'testing456'},
4: {'description': u'testing123', 'description': u'testing456'},
5: {'d... | 27,435,964 | 3 | 0 | null | 2014-12-12 02:14:49.313 UTC | 3 | 2014-12-12 02:54:18.483 UTC | 2017-05-23 12:25:08.173 UTC | null | -1 | null | 4,321,788 | null | 1 | 3 | python|dictionary|python-3.3 | 45,171 | <p>dic.values() return list of dict</p>
<pre><code>>>> for key, value in items.items():
... print dic.values()
...
[{'description': u'testing456', 'title': u'testing123'}]
[{'description': u'testing456', 'title': u'testing123'}]
[{'description': u'testing456', 'title': u'testing123'}]
[{'description': u't... |
54,069,863 | Swap two rows in a numpy array in python | <p>How to swap xth and yth rows of the 2-D NumPy array? x & y are inputs provided by the user.
Lets say x = 0 & y =2 , and the input array is as below:</p>
<pre><code>a = [[4 3 1]
[5 7 0]
[9 9 3]
[8 2 4]]
Expected Output :
[[9 9 3]
[5 7 0]
[4 3 1]
[8 2 4]]
</code></pre>
... | 54,069,951 | 1 | 0 | null | 2019-01-07 07:06:39.66 UTC | 4 | 2019-01-07 07:13:34.557 UTC | null | null | null | null | 10,855,019 | null | 1 | 39 | python|arrays|numpy|swap | 63,144 | <p>Put the index as a whole:</p>
<pre><code>a[[x, y]] = a[[y, x]]
</code></pre>
<p>With your example:</p>
<pre><code>a = np.array([[4,3,1], [5,7,0], [9,9,3], [8,2,4]])
a
# array([[4, 3, 1],
# [5, 7, 0],
# [9, 9, 3],
# [8, 2, 4]])
a[[0, 2]] = a[[2, 0]]
a
# array([[9, 9, 3],
# [5, 7, 0],
... |
53,842,697 | How do you add a label (title text) to a Checkbox in Flutter? | <p>I am playing with Checkbox to see how it works, but I don't see a title option with it. </p>
<pre><code>Checkbox(
title: Text("Checkbox label"), // The named parameter 'title' isn't defined.
value: true,
onChanged: (newValue) { },
);
</code></pre>
<p>Do I have to create my own widget to add a title to it?</... | 53,842,698 | 4 | 0 | null | 2018-12-18 23:43:05.307 UTC | 8 | 2022-06-20 17:44:33.273 UTC | 2019-05-02 16:43:04.96 UTC | null | 3,681,880 | null | 3,681,880 | null | 1 | 40 | checkbox|dart|flutter | 40,888 | <p>If you need a <a href="https://docs.flutter.io/flutter/material/Checkbox-class.html" rel="noreferrer"><code>Checkbox</code></a> with a label then you can use a <a href="https://docs.flutter.io/flutter/material/CheckboxListTile-class.html" rel="noreferrer"><code>CheckboxListTile</code></a>. </p>
<p><a href="https://... |
36,133,430 | How to call function every 2 mins in angular2? | <p>How do I call a save function every two minutes in Angular2?</p> | 36,133,464 | 1 | 0 | null | 2016-03-21 14:16:24.39 UTC | 7 | 2019-08-23 15:57:27.237 UTC | 2017-06-20 11:15:24.553 UTC | user663031 | null | null | 3,953,749 | null | 1 | 26 | angular|ionic2 | 49,171 | <p><strong>rxjs 6</strong></p>
<pre><code> import { interval } from 'rxjs';
interval(2000 * 60).subscribe(x => {
doSomething();
});
</code></pre>
<p><strong>rxjs 5</strong></p>
<p>You can either use </p>
<pre><code>import {Observable} from 'rxjs'; // Angular 6
// import {Observable} from 'rxjs/Rx'; //... |
50,032,950 | Google gmail script that triggers on incoming email | <p>I've been reading through <a href="https://developers.google.com/gmail/add-ons/how-tos/building" rel="noreferrer" title="gmail add-ons">gmail addons</a>. They have contextual triggers that trigger when you open an email.</p>
<p>Is it possible to trigger a service when an email is received by me? Best I can find is ... | 50,033,834 | 4 | 1 | null | 2018-04-26 00:04:43.267 UTC | 9 | 2022-03-10 02:42:48.167 UTC | 2018-04-26 00:40:49.56 UTC | null | 1,595,451 | null | 843,443 | null | 1 | 20 | google-apps-script|gmail|gmail-addons | 18,545 | <p>You can't create a trigger for every email, however you can do something similar <a href="https://stackoverflow.com/questions/36108478/how-to-trigger-a-google-apps-script-once-an-email-get-in-the-inbox">as described in this answer</a>. </p>
<p>For example you can:</p>
<ol>
<li><p>Set up a filter that puts a specia... |
22,782,932 | MySQL get first non null value after group by | <p>I have a large table with data that is not unique but needs to be. This table is a result of multiple union selects so is not an actual table. I cannot make it an actual table for other reasons.</p>
<p>All of the UNION'd tables have an email column which will eventually be unique. The resulting records look like thi... | 22,783,112 | 2 | 0 | null | 2014-04-01 10:18:11.38 UTC | 8 | 2021-04-16 17:07:14.387 UTC | 2021-04-16 17:07:14.387 UTC | null | 3,964,927 | null | 104,452 | null | 1 | 39 | mysql|group-by|group-concat | 26,917 | <p>Try using <code>MAX</code>, like this:</p>
<pre><code>SELECT
email,
MAX(`name`)
FROM
(
SELECT
email,
`name`
FROM
multiple_tables_and_unions
) AS emails
GROUP BY email
</code></pre> |
46,458,657 | non-nominal type X does not support explicit initialization | <p>I'm trying to understand what I'm doing wrong with generics in swift.</p>
<p>I created this sample playground</p>
<pre><code>import UIKit
public protocol MainControllerToModelInterface : class {
func addGoal()
init()
}
public protocol MainViewControllerInterface : class {
associatedtype MODELVIEW
... | 46,458,701 | 3 | 0 | null | 2017-09-27 23:22:19.11 UTC | 1 | 2017-09-28 17:46:37.347 UTC | 2017-09-28 17:46:37.347 UTC | null | 2,104,263 | null | 2,104,263 | null | 1 | 32 | ios|swift|xcode|generics|swift4 | 15,362 | <p>You just need to use <code>init</code> explicitly whenever you're initializing a generic parameter rather than a "real" type:</p>
<pre><code>self.c = C.init(modelView: m)
</code></pre> |
37,548,408 | D3 4.0 rangeRoundBands equivalent? | <p>I see a lot of D3 code that has something like this:</p>
<pre><code>var x = d3.scale.ordinal()
.rangeRoundBands([0, width], .1);
</code></pre>
<p>As of D3 version 4.0 <code>d3.scale.ordinal()</code> is now <code>d3.scaleOrdinal</code> and <code>rangeRoundBands</code> seems to be gone.</p>
<pre><code>> d3.sca... | 37,548,699 | 3 | 0 | null | 2016-05-31 14:25:00.383 UTC | 10 | 2017-06-28 14:05:57.52 UTC | 2017-04-24 08:25:52.41 UTC | null | 4,155,792 | null | 130,006 | null | 1 | 65 | javascript|d3.js | 41,496 | <p>In D3 4.x <code>rangeRoundBands</code> was moved to the new <em>Band</em> scale:</p>
<pre><code>d3.scaleBand()
.range([range])
.round([round]);
</code></pre>
<p>That's equivalent to:</p>
<pre><code>d3.scaleBand()
.rangeRound([range]);
</code></pre>
<p>Here is the API: <a href="https://github.com/d3/d... |
37,262,047 | React with TypeScript - define defaultProps in stateless function | <p>I'm using React with TypeScript and I've created stateless function. I've removed useless code from the example for readability.</p>
<pre><code>interface CenterBoxProps extends React.Props<CenterBoxProps> {
minHeight?: number;
}
export const CenterBox = (props: CenterBoxProps) => {
const minHeight... | 37,262,331 | 7 | 0 | null | 2016-05-16 19:46:04.79 UTC | 11 | 2020-02-14 23:16:17.387 UTC | 2016-05-16 20:05:41.28 UTC | null | 382,971 | null | 382,971 | null | 1 | 29 | reactjs|typescript | 30,836 | <p>After 2 hours of looking for solution... <strong>it's working</strong>.</p>
<p>If you want to define <code>defaultProps</code>, your arrow function should look like:</p>
<pre><code>export const CenterBox: React.SFC<CenterBoxProps> = props => {
(...)
};
</code></pre>
<p>Then you can define props like:... |
31,484,742 | (0xE8008018): The identity used to sign the executable is no longer valid | <p>I'm trying to debug my app on Xcode and I'm having the following error:</p>
<pre><code>The identity used to sign the executable is no longer valid.
Please verify that your device’s clock is properly set, and that your signing certificate is not expired.
(0xE8008018).
</code></pre>
<p><img src="https://i.stack.im... | 31,485,634 | 11 | 1 | null | 2015-07-17 21:08:00.7 UTC | 5 | 2016-06-04 09:28:01.017 UTC | 2015-07-17 21:33:31.047 UTC | null | 833,031 | null | 833,031 | null | 1 | 44 | ios|xcode | 35,371 | <p>After hours of investigating, the shell script for signing the project was failing at some point, without reporting back to Xcode.</p>
<p>I noticed that in the DerivedData folder (found in <code>/Users/yourUsername/Library/Developer/Xcode/DerivedData/</code>) of Xcode there were two folders with the same name of my... |
41,859,311 | Cumsum as a new column in an existing Pandas data | <p>I have a pandas dataframe defined as:</p>
<pre><code>A B SUM_C
1 1 10
1 2 20
</code></pre>
<p>I would like to do a cumulative sum of SUM_C and add it as a new column to the same dataframe. In other words, my end goal is to have a dataframe that looks like below:</p>
<pre><code>A B SU... | 41,859,343 | 1 | 0 | null | 2017-01-25 18:48:09.93 UTC | 6 | 2020-11-29 17:32:23.79 UTC | 2018-08-31 10:06:50.543 UTC | null | 7,053,679 | null | 1,124,702 | null | 1 | 34 | python|pandas|dataframe|cumsum | 45,490 | <p>Just apply <code>cumsum</code> on the <code>pandas.Series</code> <code>df['SUM_C']</code> and assign it to a new column:</p>
<pre><code>df['CUMSUM_C'] = df['SUM_C'].cumsum()
</code></pre>
<p>Result:</p>
<pre><code>df
Out[34]:
A B SUM_C CUMSUM_C
0 1 1 10 10
1 1 2 20 30
</code></pre> |
2,881,682 | How to insert Arabic characters into SQL database? | <p>How can I insert Arabic characters into a SQL Server database? I tried to insert Arabic data into a table and the Arabic characters in the insert script were inserted as <code>'??????'</code> in the table.</p>
<p>I tried to directly paste the data into the table through SQL Server Management Studio and the Arabic ch... | 2,881,793 | 3 | 2 | null | 2010-05-21 11:42:14.047 UTC | 8 | 2022-07-06 06:16:39.14 UTC | 2021-09-23 08:29:49.757 UTC | null | 1,127,428 | null | 227,809 | null | 1 | 27 | sql|sql-server|tsql|insert|arabic | 44,689 | <p>For the field to be able to store unicode characters, you have to use the type <code>nvarchar</code> (or other similar like <code>ntext</code>, <code>nchar</code>).</p>
<p>To insert the unicode characters in the database you have to send the text as unicode by using a parameter type like <code>nvarchar</code> / <co... |
3,107,151 | Persistent data structures in Scala | <p>Are all immutable data structures in Scala persistent? If not, which of them are and which not? What are the behavioural characteristics of those which are persistent? Also, how do they compare to the persistent data structures in Clojure?</p> | 3,108,380 | 4 | 0 | null | 2010-06-24 03:57:56.333 UTC | 18 | 2012-03-12 10:30:28.033 UTC | null | null | null | null | 126,916 | null | 1 | 27 | data-structures|scala|clojure|persistent | 10,782 | <p>Scala's immutable data structures are all persistent, in the sense that the old value is maintained by an `update' operation. In fact, I do not know of a difference between immutable and persistent; for me the two terms are aliases.</p>
<p>Two of Scala's 2.8 immutable data structures are vectors and hash tries, rep... |
28,889,977 | R boxplot: How to customize the appearance of the box-and-whisker plots (e.g., remove lines or borders, change symbol of outliers) | <p>Today, I was wondering how to customize the appearance of the box-and-whisker plots. E.g., I wanted to remove the line around the box. However, the problem is, that the <code>border</code> argument changes the color of all lines of the box-and-whisker plots simultaneously. So, if one has the great idea to set <code>... | 28,890,144 | 2 | 0 | null | 2015-03-05 23:44:04.277 UTC | 18 | 2018-01-24 21:07:22.043 UTC | 2018-01-24 21:07:22.043 UTC | null | 3,162,788 | null | 3,162,788 | null | 1 | 12 | r|shapes|boxplot|appearance|linestyle | 39,142 | <p>For complete documentation you should look at <code>?bxp</code> (linked from the <code>...</code> description in <code>?boxplot</code>, and in the "See Also" in <code>?boxplot</code>, and in the <code>pars</code> description in <code>?boxplot</code>.). It documents that <code>outpch</code> can change the shape of th... |
37,697,866 | NEST Conditional filter query with multiple terms | <p>I would like to do a ElasticSearch query like this:</p>
<pre><code>{
"query" :
{
"bool" :
{
"filter" : [
{
"terms" :
{
"name" : ["name1", "name2"]
}
},
... | 37,708,493 | 3 | 0 | null | 2016-06-08 09:00:05.873 UTC | 9 | 2018-12-05 10:40:08.157 UTC | null | null | null | null | 617,413 | null | 1 | 23 | c#|elasticsearch|nest | 24,792 | <p>You can create a list of filters before you make a query if you want to check conditional filters as shown below:</p>
<pre><code>var nameList = new[] {"a", "b"};
var colorList = new[] {1, 2};
var filters = new List<Func<QueryContainerDescriptor<MyDocument>, QueryContainer>>();
if (nameList.Any())... |
46,316,259 | Timer countdown Angular 2 | <p>I'm trying to make a countdown timer for my Ionic2 app, the thing is that I was using this method from now <a href="https://stackoverflow.com/a/44489685/4329781"><code>countdown timer</code></a> but now I have to create the countdown like 30:00 min, what's the better way to do it? Time could change, and if I want to... | 46,316,755 | 3 | 0 | null | 2017-09-20 07:50:12.413 UTC | 4 | 2021-05-23 21:58:10.313 UTC | 2019-05-11 07:47:03.693 UTC | null | 5,468,463 | null | 4,329,781 | null | 1 | 10 | javascript|angular|typescript|timer|countdown | 39,621 | <p>You can 'listen' to the timer and trigger the action when the countdown is 0. And to display the timer, use a pipe. </p>
<p><strong>HTML</strong></p>
<pre><code>{{counter | formatTime}}
</code></pre>
<p><strong>TypeScript</strong></p>
<pre><code> countDown:Subscription;
counter = 1800;
tick = 1000;
ng... |
37,512,662 | Is there anything wrong with using I/O + ManagedBlocker in Java8 parallelStream()? | <p>The default "paralellStream()" in Java 8 uses the common <code>ForkJoinPool</code> which may be a latency problem if the common Pool threads are exhausted when a task is submitted. However in many cases enough CPU power is available and the tasks are short enough so that this is not a problem. If we do have some lon... | 37,518,272 | 1 | 0 | null | 2016-05-29 17:06:45.08 UTC | 10 | 2016-05-30 05:37:44.47 UTC | 2017-05-23 11:58:47.887 UTC | null | -1 | null | 327,301 | null | 1 | 28 | java|java-stream | 3,279 | <p>In short, yes, there are some problems with your solution. It definitely improves using blocking code inside parallel stream, and some third-party libraries provide similar solution (see, for example, <a href="http://www.jooq.org/products/jOO%CE%BB/javadoc/0.9.11/org/jooq/lambda/Blocking.html" rel="noreferrer"><code... |
49,050,799 | What does 'pending' test mean in Mocha, and how can I make it pass/fail? | <p>I am running my tests and noticed:</p>
<pre><code>18 passing (150ms)
1 pending
</code></pre>
<p>I haven't seen this before. Previously test either passed, or failed. Timeouts caused failures. I can see which test is failing because it's also blue. But it has a timeout on it. Here's a simplified version:</p>
<pre>... | 49,051,847 | 4 | 0 | null | 2018-03-01 13:31:50.817 UTC | 4 | 2019-05-07 07:59:02.923 UTC | 2018-03-01 14:26:18.643 UTC | null | 123,671 | null | 123,671 | null | 1 | 30 | javascript|unit-testing|mocha.js | 14,782 | <p>The test <a href="https://mochajs.org/#pending-tests" rel="nofollow noreferrer">had a callback</a> (ie, an actual function, not done) but refactoring the code solved the issue. The issue was how code that expects error should run:</p>
<pre><code>test('Errors when bad thing happens', function() {
var gotExpectedEr... |
2,611,747 | Rails Resque workers fail with PGError: server closed the connection unexpectedly | <p>I have site running rails application and resque workers running in production mode, on Ubuntu 9.10, Rails 2.3.4, ruby-ee 2010.01, PostgreSQL 8.4.2</p>
<p>Workers constantly raised errors: PGError: server closed the connection unexpectedly.</p>
<p>My best guess is that master resque process establishes connection ... | 2,612,210 | 5 | 0 | null | 2010-04-10 00:27:45.943 UTC | 14 | 2013-09-02 22:20:42.71 UTC | null | null | null | null | 313,262 | null | 1 | 20 | ruby-on-rails|ruby|postgresql|activerecord|resque | 7,345 | <p>When I created <a href="http://github.com/francois/nestor" rel="nofollow noreferrer">Nestor</a>, I had the same kind of problem. The solution was to re-establish the connection in the forked process. See the relevant code at <a href="http://github.com/francois/nestor/blob/master/lib/nestor/mappers/rails/test/unit.rb... |
3,162,551 | How do I mock static methods in a class with easymock? | <p>Suppose I have a class like so:</p>
<pre><code>public class StaticDude{
public static Object getGroove() {
// ... some complex logic which returns an object
};
}
</code></pre>
<p>How do I mock the static method call using easy mock? <code>StaticDude.getGroove()</code>.</p>
<p>I am using easy mock ... | 3,162,598 | 5 | 0 | null | 2010-07-02 00:27:00.703 UTC | 7 | 2017-02-16 14:15:41.387 UTC | 2010-07-17 20:43:40.927 UTC | null | 70,604 | null | 99,033 | null | 1 | 34 | java|unit-testing|static|tdd|easymock | 75,723 | <p>Not sure how to with pure EasyMock, but consider using the <a href="https://github.com/jayway/powermock" rel="noreferrer">PowerMock</a> extensions to EasyMock.</p>
<p>It has a lot of cool functions for doing just what you need -
<a href="https://github.com/jayway/powermock/wiki/MockStatic" rel="noreferrer">https:/... |
2,835,627 | php is_function() to determine if a variable is a function | <p>I was pretty excited to read about <a href="http://php.net/manual/en/functions.anonymous.php" rel="noreferrer">anonymous functions</a> in php, which let you declare a variable that is function easier than you could do with <a href="http://us2.php.net/manual/en/function.create-function.php" rel="noreferrer">create_fu... | 2,835,660 | 5 | 0 | null | 2010-05-14 16:03:44.033 UTC | 12 | 2020-02-27 03:56:49.613 UTC | null | null | null | null | 88,310 | null | 1 | 95 | php|anonymous-function | 47,715 | <p>Use <a href="http://php.net/manual/en/function.is-callable.php" rel="noreferrer"><code>is_callable</code></a> to determine whether a given variable is a function. For example:</p>
<pre><code>$func = function()
{
echo 'asdf';
};
if( is_callable( $func ) )
{
// Will be true.
}
</code></pre> |
2,458,723 | C Macro for minimum of two numbers | <p>I want to make a simple macro with #define for returning the smaller of two numbers.</p>
<p>How can i do this in C ? Suggest some ideas, and see if you can make it more obfuscated too. </p> | 2,458,899 | 7 | 1 | null | 2010-03-16 22:51:39.72 UTC | null | 2017-09-19 18:23:48.617 UTC | 2015-03-31 02:12:20.9 UTC | null | 1,257,035 | null | 281,619 | null | 1 | 5 | c|c-preprocessor|minimum | 42,696 | <p>For slightly obfuscated, try this:</p>
<pre><code>#define MIN(a,b) ((((a)-(b))&0x80000000) >> 31)? (a) : (b)
</code></pre>
<p>Basically, it subtracts them, and looks at the sign-bit as a 1-or-0.
If the subtraction results in a negative number, the first parameter is smaller.</p> |
3,000,209 | Service reference not generating client types | <p>I am trying to consume a WCF service in a class library by adding a service reference to it. In one of the class libraries it gets consumed properly and I can access the client types in order to generate a proxy off of them. However in my second class library (or even in a console test app), when i add the same serv... | 3,000,363 | 7 | 1 | null | 2010-06-08 18:35:54.893 UTC | 3 | 2017-11-20 10:52:05.44 UTC | null | null | null | null | 313,197 | null | 1 | 31 | .net|wcf|service|reference | 33,368 | <p>Apparently you have to add a reference to System.Web in your project before adding the Service Reference. That did it. </p> |
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