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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
9,376,384 | Sort a list of tuples depending on two elements | <blockquote>
<p><strong>Possible Duplicate:</strong><br>
<a href="https://stackoverflow.com/questions/3979872/python-how-to-sort-a-complex-list-on-two-different-keys">python: how to sort a complex list on two different keys</a> </p>
</blockquote>
<p>I've got a list of tuples. I want to sort them depending two e... | 9,376,419 | 1 | 2 | null | 2012-02-21 11:01:21.263 UTC | 13 | 2012-02-21 11:04:07.923 UTC | 2017-05-23 12:02:24.833 UTC | null | -1 | null | 967,164 | null | 1 | 56 | python|sorting|python-3.x|tuples | 62,146 | <pre><code>sorted(unsorted, key=lambda element: (element[1], element[2]))
</code></pre>
<p>I've assumed an order for the keys from the sample output.</p> |
16,120,697 | Kotlin: how to pass a function as parameter to another? | <p>Given function foo :</p>
<pre><code>fun foo(m: String, bar: (m: String) -> Unit) {
bar(m)
}
</code></pre>
<p>We can do:</p>
<pre><code>foo("a message", { println("this is a message: $it") } )
//or
foo("a message") { println("this is a message: $it") }
</code></pre>
<p>Now, lets say we have the following... | 33,402,863 | 11 | 0 | null | 2013-04-20 13:04:06.723 UTC | 29 | 2022-03-12 05:07:04.833 UTC | 2017-06-15 17:08:41.263 UTC | null | 1,530,549 | null | 393,786 | null | 1 | 274 | kotlin | 163,595 | <p>Use <code>::</code> to signify a function reference, and then:</p>
<pre><code>fun foo(msg: String, bar: (input: String) -> Unit) {
bar(msg)
}
// my function to pass into the other
fun buz(input: String) {
println("another message: $input")
}
// someone passing buz into foo
fun something() {
... |
16,396,297 | Camera preview freezes after screen lock | <p>The custom camera app I've written stops giving the preview after the screen locks (by pushing lock butten or waiting for a couple of minutes). I don't get an exception, which makes it quite difficult to find the problem. </p>
<p>Does the android screen lock (if that's the correct term) pauses/halts/... my App (act... | 16,532,667 | 4 | 1 | null | 2013-05-06 10:01:27.407 UTC | 10 | 2017-03-01 08:05:36.567 UTC | null | null | null | null | 2,320,084 | null | 1 | 20 | java|android|android-activity|camera | 7,111 | <p>I faced same problem and fixed it using following steps:</p>
<ol>
<li><p>I created my camera preview and added it to the container FrameLayout in onResume() of the parent activity. Something like:</p>
<pre><code>public void onResume{
super.onResume();
mCamera = Camera.open();
if(null != mCamera){
... |
16,105,485 | unsupported operand type(s) for *: 'float' and 'Decimal' | <p>I'm just playing around learning classes functions etc, So I decided to create a simple function what should give me tax amount.</p>
<p>this is my code so far.</p>
<pre><code>class VAT_calculator:
"""
A set of methods for VAT calculations.
"""
def __init__(self, amount=None):
self.amount ... | 16,105,582 | 2 | 1 | null | 2013-04-19 13:13:25.863 UTC | 7 | 2018-03-20 05:18:01.86 UTC | 2018-03-20 05:18:01.86 UTC | null | 3,962,914 | null | 578,822 | null | 1 | 76 | python|django | 140,147 | <p>It seems like <code>self.VAT</code> is of <code>decimal.Decimal</code> type and <code>self.amount</code> is a <code>float</code>, thing that you can't do.</p>
<p>Try <code>decimal.Decimal(self.amount) * self.VAT</code> instead.</p> |
28,947,607 | ascii codec cant decode byte 0xe9 | <p>I have done some research and seen solutions but none have worked for me.</p>
<p><a href="https://stackoverflow.com/questions/9644099/python-ascii-codec-cant-decode-byte">Python - 'ascii' codec can't decode byte</a> </p>
<p>This didn't work for me. And I know the 0xe9 is the é character. But I still ca... | 28,947,833 | 4 | 8 | null | 2015-03-09 16:55:36.733 UTC | null | 2015-03-09 17:23:27.21 UTC | 2017-05-23 10:31:00.813 UTC | null | -1 | null | 3,961,428 | null | 1 | 7 | python|unicode|encoding|utf-8|decode | 40,231 | <p>You are trying to encode bytestrings:</p>
<pre><code>>>> '<counter name="Entreé">'.encode('utf8')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 20: ordinal not in range(128)
</code></pre>
<p>P... |
17,403,795 | Populate state and city dropdowns based on country and state using jQuery | <p>I am trying to accomplish dropdowns using JSON. I want 3 dropdowns. First populate the country dropdown (eg: usa, uk etc.,). Now, when the user select USA then states dropdown needs to be populated by using jQuery .change(). Again when user select the state they need to be presented with cities dropdowns.</p>
<p>Ho... | 17,404,238 | 4 | 1 | null | 2013-07-01 11:48:32.357 UTC | 3 | 2019-02-06 12:14:10.553 UTC | 2018-10-17 09:41:38.917 UTC | null | 87,015 | null | 1,395,787 | null | 1 | 6 | javascript|jquery|json|ajax|html-select | 66,816 | <p>Exactly like others said, you have to handle the <code>onchange</code> event of country & state select inputs & apply your logic. I have fiddled here for getting states dynamically on selecting a country, you might be able to code the rest yourself - <a href="http://jsfiddle.net/YqLh8/" rel="nofollow norefer... |
17,312,949 | Delphi Error Dataset not in Insert or Edit Mode | <p>Objective:</p>
<ol>
<li>Click on the button on the TRxDBCombo to call a search box</li>
<li>On Selecting the record from search box, the result is set as Field Value for the TComboEditBox and is posted in the TRxMemoryData Dataset</li>
</ol>
<p>The Error:</p>
<p>Dataset not in Insert or Edit Mode appears the seco... | 17,334,907 | 1 | 2 | null | 2013-06-26 06:25:34.33 UTC | null | 2013-06-27 05:05:33.263 UTC | 2013-06-26 13:12:24.76 UTC | null | 1,744,164 | null | 964,576 | null | 1 | 6 | delphi|delphi-7 | 42,870 | <p>The error is coming because of the following line:
<strong>TDBEditBox1.Field.Value := MResult;</strong> at this line your dataset is not in Insert or Edit mode. You can add following check to avoid this error:</p>
<pre><code>if not (TDBEditBox1.DataSource.DataSet.State in [dsEdit, dsInsert]) then
begin
TDBEditBo... |
17,329,924 | How to get Java File absolute path from InputStream? | <p>I'm on Java 6 and I have a method that scans the runtime classpath for a file called <code>config.xml</code>. If found, I would like to read the contents of the file into a string:</p>
<pre><code>InputStream istream = this.getClass().getClassLoader().getResourceAsStream("config.xml");
if(istream != null) {
Syst... | 17,330,561 | 2 | 2 | null | 2013-06-26 20:32:39.277 UTC | 2 | 2013-06-26 21:14:04.607 UTC | null | null | null | user1768830 | null | null | 1 | 18 | java|file-io|classpath|classloader|absolute-path | 78,926 | <p>From your given example, it is not clear what <code>fileName</code> refers to. You should just use the stream you got from <code>getResourceAsStream()</code>to read you file, something along</p>
<pre><code>reader = new BufferedReader(new InputStreamReader(istream));
</code></pre>
<p>And you should avoid to repeate... |
17,660,469 | Get field class in annotations processor | <p>I am writing my first Annotations processor and having trouble with something that seems trivial but I cannot find any information about it.</p>
<p>I have a element annotated with my annotation</p>
<pre><code>@MyAnnotation String property;
</code></pre>
<p>When I get this property as a element in my processor I c... | 17,660,882 | 1 | 2 | null | 2013-07-15 17:43:31.077 UTC | 14 | 2015-10-26 18:18:33.463 UTC | 2013-07-15 17:49:07.617 UTC | null | 771,578 | null | 662,994 | null | 1 | 19 | java|annotations | 13,325 | <p>When running your annotation processor, you don't have access to the compiled classes. The point of annotation processing is that it happens pre-compile.</p>
<p>Instead, you need to create an annotation processor that specifically handles your annotation type, then use the mirror API to access the field. For exampl... |
12,042,303 | Accessing variables in other Windows Form class | <p>I will appreciate if anyone can help me on this.</p>
<p>I have a windows form app that has three forms: form1, form2, form3. form1 starts when the app is activated. on form1, there is a button that brings up form2, and hide form1. there is also one button that brings up form3 and hides form2 on form2.</p>
<pre><co... | 12,042,398 | 4 | 6 | null | 2012-08-20 17:35:47.347 UTC | 2 | 2017-07-16 16:35:40.63 UTC | 2017-07-16 16:35:40.63 UTC | null | 107,625 | null | 1,401,920 | null | 1 | 3 | c#|windows|forms | 60,472 | <p>So you have information in the parent form (form2) that you want to access in a method of the child form (form3).</p>
<ol>
<li>Create properties in <code>form3</code> for the information that it will need.</li>
<li>When <code>form2</code> creates an instance of <code>form3</code> it should set those properties.</li... |
22,321,769 | Function.prototype.apply.bind usages? | <p>I perfectly know the <a href="https://stackoverflow.com/a/8843181/859154">usages</a> for : </p>
<p><code>Function.prototype.bind.apply(f,arguments)</code></p>
<blockquote>
<blockquote>
<p>Explanation - Use the original (if exists) <code>bind</code> method over <code>f</code> with <code>arguments</code> (wh... | 22,322,147 | 1 | 2 | null | 2014-03-11 09:40:37.557 UTC | 19 | 2014-03-11 09:55:04.413 UTC | 2017-05-23 12:18:25.473 UTC | null | -1 | null | 859,154 | null | 1 | 15 | javascript | 2,772 | <p>This is used to fix the first parameter of <code>.apply</code>.</p>
<p>For example, when you get the max value from an array, you do:</p>
<pre><code>var max_value = Math.max.apply(null, [1,2,3]);
</code></pre>
<p>But you want to get the first parameter fixed to <code>null</code>, so you could create an new functi... |
21,632,243 | How do I get asynchronous / event-driven LISTEN/NOTIFY support in Java using a Postgres database? | <p>From what I can tell, the JDBC drivers for LISTEN/NOTIFY in Java do NOT support true event-driven notifications. You have to poll the database every so often to see if there's a new notification.</p>
<p>What options do I have in Java (possibly something other than JDBC?), if any, to get notifications asynchronousl... | 23,352,527 | 3 | 6 | null | 2014-02-07 15:57:11.243 UTC | 14 | 2022-04-06 04:15:13.113 UTC | null | null | null | null | 3,241,719 | null | 1 | 44 | java|postgresql | 29,407 | <p>Use the pgjdbc-ng driver.</p>
<p><a href="http://impossibl.github.io/pgjdbc-ng/" rel="nofollow noreferrer">http://impossibl.github.io/pgjdbc-ng/</a></p>
<p>It supports async notifications, without polling. I have used it successfully.</p>
<p>See <a href="https://database-patterns.blogspot.com/2014/04/postgresql-nofi... |
26,833,517 | Error inflating class android.support.v7.widget.CardView | <p>I unexpectedly encountered the following error while trying to run my application:</p>
<pre><code>Binary XML file line #8: Error inflating class android.support.v7.widget.CardView
</code></pre>
<p>Below is the log cat:</p>
<pre><code>11-09 13:11:58.558: E/AndroidRuntime(12542): FATAL EXCEPTION: main
11-09 13:... | 37,704,732 | 11 | 2 | null | 2014-11-09 21:26:35.123 UTC | 6 | 2020-05-29 23:59:44.573 UTC | null | null | null | null | 3,907,211 | null | 1 | 27 | java|android|android-layout|android-activity | 38,037 | <p>I solved this by adding updated cardview and appcompat on the app/build.gradle</p>
<pre><code>dependencies {
...
compile 'com.android.support:appcompat-v7:23.4.0'
compile 'com.android.support:cardview-v7:23.4.0'
compile 'com.android.support:recyclerview-v7:23.4.0'
}
</code></pre>
<p>Then re... |
26,532,081 | What is wrong with my Java solution to Codility MissingInteger? | <p>I am trying to solve the codility MissingInteger problem <a href="https://codility.com/c/intro/demoZKF8W2-4TC" rel="nofollow noreferrer">link</a>:</p>
<blockquote>
<p>Write a function:</p>
<pre><code>class Solution { public int solution(int[] A); }
</code></pre>
<p>that, given a non-empty zero-indexed array... | 26,532,194 | 5 | 4 | null | 2014-10-23 15:48:46.193 UTC | 7 | 2019-11-12 13:20:53.613 UTC | 2018-07-02 22:08:42.78 UTC | null | 2,891,664 | null | 3,878,104 | null | 1 | 11 | java | 71,688 | <blockquote>
<p>returns the minimal positive integer that does not occur in A.</p>
</blockquote>
<p>So in an array with only one element, if that number is 1, you should return 2. If not, you should return 1.</p>
<p>I think you're probably misunderstanding the requirements a little. Your code is creating keys in a ... |
21,417,954 | Espresso: Thread.sleep( ) | <p>Espresso claims that there is no need for <code>Thread.sleep()</code> but my code doesn't work unless I include it. I am connecting to an IP and, while connecting, a progress dialog is shown. I need a <code>Thread.sleep()</code> call to wait for the dialog to dismiss. This is my test code where I use it:</p>
<pre><c... | 22,563,297 | 14 | 11 | null | 2014-01-28 22:06:54.69 UTC | 40 | 2021-09-17 06:33:34.903 UTC | 2020-10-23 08:46:46.23 UTC | null | 1,071,320 | null | 1,642,079 | null | 1 | 124 | android|testing|android-espresso | 80,543 | <p>On my mind correct approach will be:</p>
<pre><code>/** Perform action of waiting for a specific view id. */
public static ViewAction waitId(final int viewId, final long millis) {
return new ViewAction() {
@Override
public Matcher<View> getConstraints() {
return isRoot();
... |
17,583,126 | How to tell Gradle to use a different AndroidManifest from the command line? | <p>I have a multi-module project. From the root of my project (which contains multiple modules), I want to be able to call 'gradle build' and have it use a different AndroidManifest in one of my modules depending on some parameter I pass in. What's the best way to accomplish this? Should I use a gradle.properties file ... | 17,604,654 | 2 | 0 | null | 2013-07-11 00:24:41.193 UTC | 10 | 2021-12-06 13:28:54.553 UTC | null | null | null | null | 760,105 | null | 1 | 20 | android|command-line|android-manifest|gradle|command-line-arguments | 21,589 | <p>I solved this by using different build types.</p>
<p>Here's my build.gradle:</p>
<pre><code>buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:0.4.2'
}
}
apply plugin: 'android'
dependencies {
compile project(':facebook-andro... |
17,654,266 | SOLR autoCommit vs autoSoftCommit | <p>I'm very confused about and . Here is what I understand</p>
<ul>
<li><p><strong>autoSoftCommit</strong> - after a autoSoftCommit, if the the SOLR server goes down, the autoSoftCommit documents will be lost. </p></li>
<li><p><strong>autoCommit</strong> - does a hard commit to the disk and make sure all the autoSo... | 17,666,569 | 3 | 0 | null | 2013-07-15 12:28:37.263 UTC | 18 | 2019-09-22 22:48:22.743 UTC | 2013-07-15 13:39:01.07 UTC | null | 1,378,771 | null | 1,378,771 | null | 1 | 30 | solr|solr4 | 28,914 | <p>You have openSearcher=false for hard commits. Which means that even though the commit happened, the searcher has not been restarted and cannot see the changes. Try changing that setting and you will not need soft commit.</p>
<p>SoftCommit does reopen the searcher. So if you have both sections, soft commit shows new... |
18,656,808 | How to optimize vlookup for high search count ? (alternatives to VLOOKUP) | <p>I am looking for alternatives to vlookup, with improved performance within the context of interest.</p>
<p>The context is the following:</p>
<ul>
<li>I have a data set of {key;data} which is big (~ 100'000 records)</li>
<li>I want to perform a lot of VLOOKUP operations on the dataset (typical use is to reorder the... | 18,656,809 | 4 | 1 | null | 2013-09-06 11:31:30.057 UTC | 16 | 2018-01-31 16:06:10.113 UTC | 2018-07-09 18:41:45.953 UTC | null | -1 | null | 2,496,333 | null | 1 | 23 | performance|excel|dictionary|vlookup|vba | 44,893 | <p>I considered the following alternatives:</p>
<ul>
<li>VLOOKUP array-formula</li>
<li>MATCH / INDEX </li>
<li>VBA (using a dictionary)</li>
</ul>
<p>The compared performance is:</p>
<ul>
<li>VLOOKUP simple formula : ~10 minutes</li>
<li>VLOOKUP array-formula : ~10 minutes (1:1 performance index)</li>
<li>MATC... |
51,860,043 | Javascript ES6 TypeError: Class constructor Client cannot be invoked without 'new' | <p>I have a class written in Javascript ES6. When I try to execute <code>nodemon</code> command I always see this error <code>TypeError: Class constructor Client cannot be invoked without 'new'</code></p>
<p>The full error is mentioned below:</p>
<pre><code>/Users/akshaysood/Blockchain/fabricSDK/dist/application/Tran... | 51,860,850 | 8 | 7 | null | 2018-08-15 13:51:13.893 UTC | 16 | 2022-08-01 14:11:08.863 UTC | 2018-08-15 14:08:29.397 UTC | null | 5,431,173 | null | 5,431,173 | null | 1 | 69 | javascript|node.js|ecmascript-6 | 156,273 | <p>The problem is that the class extends native ES6 class and is transpiled to ES5 with Babel. Transpiled classes cannot extend native classes, at least without additional measures.</p>
<pre><code>class TranspiledFoo extends NativeBar {
constructor() {
super();
}
}
</code></pre>
<p>results in something like</... |
5,021,995 | JsonResult parsing special chars as \u0027 (apostrophe) | <p>I am in the process of converting some of our web "services" to MVC3 from WCF Rest.</p>
<p>Our old web services returned JSON from POCO's just fine using:
<code>[WebGet(.... ResponseFormat=WebMessageFormat.Json]</code></p>
<p>In my controller to return back a simple poco I'm using a JsonResult as the return type, ... | 5,022,386 | 3 | 0 | null | 2011-02-16 20:56:33.487 UTC | 4 | 2020-06-12 11:30:49.91 UTC | 2011-02-16 21:30:41.023 UTC | null | 179,482 | null | 338,140 | null | 1 | 7 | asp.net-mvc|asp.net-mvc-3|json | 43,149 | <p>That shouldn't be any problem, as both representations are equivalent:</p>
<pre><code>var a = {"CategoryId":8,"SomeId":6,"Name":"Richie\u0027s House"};
alert(a.Name);
</code></pre>
<p>alerts <code>Richie's House</code>.</p> |
5,021,120 | ffmpeg mp3 conversion failed | <p>using ffmpeg to convert from flv to mp3 gives the following result<pre><br>
] ffmpeg-0.6.1 >> ffmpeg -i name.flv name.mp3
FFmpeg version 0.6.1, Copyright (c) 2000-2010 the FFmpeg developers
built on Feb 14 2011 12:33:38 with gcc 4.1.2 20080704 (Red Hat 4.1.2-48)
configuration:
libavutil 50.15. 1 / 50.15. 1
libavcode... | 5,023,195 | 3 | 0 | null | 2011-02-16 19:25:26.27 UTC | 10 | 2012-11-14 02:18:19.153 UTC | 2011-02-16 19:40:34.103 UTC | null | 444,757 | null | 444,757 | null | 1 | 32 | ffmpeg|mp3|flv | 43,852 | <p>It looks like your FFMPEG wasn't compiled with libmp3lame. See this post:</p>
<p><a href="https://superuser.com/questions/196857/how-to-install-libmp3lame-for-ffmpeg">https://superuser.com/questions/196857/how-to-install-libmp3lame-for-ffmpeg</a></p>
<p>If you can't compile it on your own you'll have to search for... |
9,280,716 | How to Ignore Line Length PHP_CodeSniffer | <p>I have been using PHP_CodeSniffer with jenkins, my build.xml was configured for phpcs as below </p>
<pre><code><target name="phpcs">
<exec executable="phpcs">
<arg line="--report=checkstyle --report-file=${basedir}/build/logs/checkstyle.xml --standard=Zend ${source}"/>
</exec>... | 9,281,546 | 4 | 3 | null | 2012-02-14 16:45:06.91 UTC | 7 | 2022-01-17 22:33:09.023 UTC | 2013-01-04 22:40:55.15 UTC | null | 367,456 | null | 531,466 | null | 1 | 46 | php|jenkins|continuous-integration|pear|codesniffer | 36,418 | <p>You could create your own standard. The Zend one is quite simple (this is at <code>/usr/share/php/PHP/CodeSniffer/Standards/Zend/ruleset.xml</code> in my Debian install after installing it with PEAR). Create another one based on it, but ignore the line-length bit:</p>
<pre><code><?xml version="1.0"?>
<rule... |
9,642,055 | CSV Parsing Options with .NET | <p>I'm looking at my delimited-file (e.g. CSV, tab seperated, etc.) parsing options based on MS stack in general, and .net specifically. The only technology I'm excluding is SSIS, because I already know it will not meet my needs.</p>
<p>So my options appear to be:</p>
<ol>
<li>Regex.Split</li>
<li><a href="http://m... | 9,642,224 | 3 | 4 | null | 2012-03-09 22:51:47.927 UTC | 4 | 2018-07-27 10:38:24.577 UTC | 2012-03-09 23:10:42.02 UTC | null | 284,758 | null | 284,758 | null | 1 | 14 | c#|.net|parsing | 38,056 | <p>Did you try searching for an already-existing .NET <a href="http://www.codeproject.com/search.aspx?q=.net+CSV+parser" rel="noreferrer">CSV parser</a>? <a href="http://www.codeproject.com/Articles/9258/A-Fast-CSV-Reader" rel="noreferrer">This one</a> claims to handle multi-line records significantly faster than OLEDB... |
18,429,121 | Inline Form nested within Horizontal Form in Bootstrap 3 | <p>I want to build a form in Bootstrap 3 like this:</p>
<p><img src="https://i.stack.imgur.com/gsVKH.png" alt=""></p>
<p>My site (not the above link) just updates from Bootstrap 2.3.2 and the format is not correct anymore.</p>
<p>I cannot find any doc about this type of form on <a href="http://getbootstrap.com" rel=... | 18,429,555 | 6 | 0 | null | 2013-08-25 12:46:17.18 UTC | 23 | 2020-05-04 14:31:39.587 UTC | 2017-05-23 11:47:26.613 UTC | null | -1 | null | 1,421,239 | null | 1 | 74 | html|css|forms|twitter-bootstrap|twitter-bootstrap-3 | 149,696 | <p>I have created a <a href="http://jsfiddle.net/r7hgjjzv/"><strong>demo</strong></a> for you.</p>
<p>Here is how your nested structure should be in Bootstrap 3:</p>
<pre><code><div class="form-group">
<label for="birthday" class="col-xs-2 control-label">Birthday</label>
<div class="col-x... |
18,300,536 | Get value of attribute in CSS | <p>I have this HTML code:</p>
<pre><code><div data-width="70"></div>
</code></pre>
<p>I want to set it's width in CSS equal to the value of data-width attribute, e.g. something like this:</p>
<pre><code>div {
width: [data-width];
}
</code></pre>
<p>I saw this was done somewhere, but I can't remember... | 18,301,660 | 8 | 2 | null | 2013-08-18 15:15:00.353 UTC | 5 | 2021-10-31 15:47:21.087 UTC | null | null | null | null | 1,616,512 | null | 1 | 51 | html|css | 95,911 | <p>You need <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/attr()" rel="noreferrer">the <code>attr</code> CSS function</a>:</p>
<pre><code>div {
width: attr(data-width);
}
</code></pre>
<p>The problem is that (as of 2021) it's not supported even by some of the major browsers (in my case Chrome):</p>
<p><... |
20,357,223 | easy way to unzip file with golang | <p>is there a easy way to unzip file with golang ?</p>
<p>right now my code is:</p>
<pre><code>func Unzip(src, dest string) error {
r, err := zip.OpenReader(src)
if err != nil {
return err
}
defer r.Close()
for _, f := range r.File {
rc, err := f.Open()
if err != nil {
... | 24,792,688 | 8 | 2 | null | 2013-12-03 17:00:54.663 UTC | 11 | 2021-05-21 20:53:00.957 UTC | 2013-12-07 12:06:52.583 UTC | null | 740,182 | null | 740,182 | null | 1 | 37 | go|zip|unzip | 40,528 | <p>Slight rework of the OP's solution to create the containing directory <code>dest</code> if it doesn't exist, and to wrap the file extraction/writing in a closure to eliminate stacking of <code>defer .Close()</code> calls per <a href="https://stackoverflow.com/users/164234/nick-craig-wood">@Nick Craig-Wood</a>'s comm... |
15,095,868 | jquery.click() not working in iOS | <p>HTML:</p>
<pre><code><div id="footer">
<a class="button1 selected" id="button1" href="#"><div class="icon"></div><div class="text">Option 1</div></a>
<a class="button2" id="button2" href="#"><div class="icon"></div><div class="text">Option 2&... | 15,096,054 | 6 | 3 | null | 2013-02-26 17:50:19.783 UTC | 5 | 2021-12-23 07:08:07.72 UTC | 2017-05-23 12:32:35.72 UTC | null | -1 | null | 718,645 | null | 1 | 24 | jquery|ios | 48,030 | <p>Try to add a pointer cursor to the button and use .on to bind the click event.</p>
<pre><code>$('#button1').css('cursor','pointer');
$(document).on('click', '#button1', function(event) {
event.preventDefault();
alert('button1');
});
</code></pre> |
15,449,034 | Batch program to to check if process exists | <p>I want a batch program, which will check if the process <code>notepad.exe</code> exists.</p>
<p><strong>if</strong> <code>notepad.exe</code> exists, it will end the process, </p>
<p><strong>else</strong> the batch program will close itself.</p>
<p>Here is what I've done:</p>
<pre><code>@echo off
tasklist /fi "im... | 15,449,358 | 5 | 5 | null | 2013-03-16 12:04:48.457 UTC | 13 | 2021-11-05 17:39:24.88 UTC | 2016-07-15 10:20:59.073 UTC | null | 2,306,173 | null | 2,176,930 | null | 1 | 34 | windows|batch-file|command|cmd | 149,056 | <p><code>TASKLIST</code> does not set errorlevel.</p>
<pre><code>echo off
tasklist /fi "imagename eq notepad.exe" |find ":" > nul
if errorlevel 1 taskkill /f /im "notepad.exe"
exit
</code></pre>
<p>should do the job, since ":" should appear in <code>TASKLIST</code> output only if the task is NOT found, hence <code... |
15,120,745 | Understanding Oracle's Java on Mac | <p>I've been using Java on OS X for many, many years and recently when Apple stopped including Java by default I let the OS go and install it for me (Apple's variety, of course).</p>
<p>So now I'm using OS X 10.8 and I need to install Java 7 so I just got Oracle's Update 15 in DMG form and ran the installer. It updat... | 15,133,344 | 3 | 1 | null | 2013-02-27 19:32:16.057 UTC | 32 | 2017-08-15 09:12:13.27 UTC | 2017-08-15 09:12:13.27 UTC | null | 1,033,581 | null | 499,689 | null | 1 | 49 | java|macos|oracle | 18,054 | <p>Oracle's JVM is only installed in one location. You've been misled!</p>
<p>As you've noted, the Java commands in <code>/usr/bin</code> are symlinks to binaries in <code>/System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands</code>. The binaries within that directory are stub applications that determi... |
38,382,043 | How to use CSS position sticky to keep a sidebar visible with Bootstrap 4 | <p>I have a two columns layout like this:</p>
<pre><code> <div class="row">
<div class="col-xs-8 content">
</div>
<div class="col-xs-4">
</div>
</div>
</code></pre>
<p>If I set the <code>position:sticky</code> to the sidebar column, I get the sticky behaviour of t... | 38,413,663 | 4 | 4 | null | 2016-07-14 18:50:22.077 UTC | 5 | 2021-08-10 11:36:33.767 UTC | 2018-03-05 13:50:48.84 UTC | null | 171,456 | null | 1,165,509 | null | 1 | 18 | css|twitter-bootstrap|css-position|bootstrap-4|twitter-bootstrap-4 | 42,773 | <p>I solved enabling <code>flexbox</code>. After raising an issue in Bootstrap's <a href="https://github.com/twbs/bootstrap/issues/20307#issuecomment-233069019" rel="noreferrer">Github</a> repository I got an answer by a Bootstrap <a href="https://github.com/cvrebert" rel="noreferrer">member</a>:</p>
<blockquote>
<p... |
28,285,813 | Style jQuery autocomplete in a Bootstrap input field | <p>I have implemented a jQuery autocomplete function to a Bootstrap input. The jQuery autocomplete is working fine but I want to see the results as a combo and I guess it's now happening because I'm using BootStrap.</p>
<p>This is the field that I'm assigning autocomplete:</p>
<pre class="lang-html prettyprint-overri... | 28,286,277 | 5 | 3 | null | 2015-02-02 20:05:46.213 UTC | 27 | 2022-03-15 10:18:57.74 UTC | 2015-08-06 03:48:26.927 UTC | null | 1,366,033 | null | 1,253,667 | null | 1 | 41 | jquery|twitter-bootstrap|jquery-autocomplete | 146,859 | <p>If you're using jQuery-UI, you <em>must</em> include the jQuery UI CSS package, otherwise the UI components don't know how to be styled. </p>
<p>If you don't like the jQuery UI styles, then you'll have to recreate all the styles it would have otherwise applied.</p>
<p>Here's an example and some possible fixes.</p... |
8,122,431 | How to create custom view controller container using storyboard in iOS 5 | <p>In iOS5 using storyboard feature I want to create a custom container which will have 2 <code>ViewControllers</code> embedded in it. For Example, embed Table view controller as well as a view controller both in one <code>ViewController</code>.</p>
<p>That is, one view controller will have 2 relationship:</p>
<ol>
<... | 8,123,625 | 2 | 1 | null | 2011-11-14 13:40:06.963 UTC | 11 | 2014-08-27 07:31:50.9 UTC | 2014-08-27 07:31:50.9 UTC | null | 3,623,301 | null | 977,868 | null | 1 | 23 | ios5|storyboard | 22,685 | <p>,You should only have one view controller to control the scene. However, this viewController might have two other view controllers that control particular subviews on your scene. To do this you create properties in your scene viewController, in your case one for your tableViewController and one for your view. I like... |
8,117,822 | In bash, can you use a function call as a condition in an if statement? | <p>here's what i'm trying to achive:</p>
<pre><code>function f1() {
return 0
}
function f2() {
return 0
}
if [[ f1 && f2 ]]; then
echo "success"
else
echo "fail"
fi
</code></pre> | 8,117,867 | 2 | 0 | null | 2011-11-14 05:51:49.23 UTC | 11 | 2011-11-14 06:05:05.983 UTC | null | null | null | null | 3,966 | null | 1 | 47 | bash | 44,019 | <p>You don't use <code>[[</code> (or <code>[</code>) when running a command and checking the result code.</p>
<pre><code>if f1 && f2 ; then
echo "success"
else
echo "fail"
fi
</code></pre> |
9,633,840 | Spring autowired bean for @Aspect aspect is null | <p>I have the following spring configuration:</p>
<pre><code><context:component-scan base-package="uk.co.mysite.googlecontactsync.aop"/>
<bean name="simpleEmailSender" class="uk.co.mysite.util.email.simple.SimpleEmailSenderImplementation"/>
<aop:aspectj-autoproxy/>
</code></pre>
<p>Then I have an ... | 9,658,819 | 10 | 7 | null | 2012-03-09 12:10:32.73 UTC | 12 | 2021-03-08 09:29:20.197 UTC | 2012-03-12 09:12:11.953 UTC | null | 835,058 | null | 835,058 | null | 1 | 37 | java|spring|aop|aspectj|spring-aop | 34,390 | <p>The aspect is a singleton object and is created outside the Spring container. A solution with XML configuration is to use Spring's factory method to retrieve the aspect.</p>
<pre><code><bean id="syncLoggingAspect" class="uk.co.demo.SyncLoggingAspect"
factory-method="aspectOf" />
</code></pre>
<p>With t... |
9,549,866 | PHP Regex to Remove http:// from string | <p>I have full URLs as strings, but I want to remove the http:// at the beginning of the string to display the URL nicely (ex: www.google.com instead of <a href="http://www.google.com">http://www.google.com</a>)</p>
<p>Can someone help?</p> | 9,549,893 | 8 | 7 | null | 2012-03-03 21:06:22.38 UTC | 16 | 2019-06-05 10:02:19.31 UTC | null | null | null | null | 538,143 | null | 1 | 50 | php|regex | 59,331 | <pre><code>$str = 'http://www.google.com';
$str = preg_replace('#^https?://#', '', $str);
echo $str; // www.google.com
</code></pre>
<p>That will work for both <code>http://</code> and <code>https://</code></p> |
9,419,175 | Are closures a violation of the functional programming paradigm? | <p>Functional programming "avoids state and mutable data". </p>
<p>Closures hide state by binding their lexical environment and are thus closed over their free <strong>variables</strong>. </p>
<p>How is Haskell purely-functional if it supports closures? Don't they break referential transparency?</p> | 9,419,915 | 4 | 14 | null | 2012-02-23 18:43:24.36 UTC | 10 | 2013-07-07 20:56:16.497 UTC | 2012-04-28 12:40:41.027 UTC | user257111 | null | null | 255,528 | null | 1 | 27 | haskell|functional-programming|closures | 3,293 | <p>In Haskell, closures have free variables in the same way that in math you can write <code>f x = x^2</code> - it doesn't mutate state.</p>
<p>I would say that Haskell avoids <em>mutable</em> state.</p> |
59,867,434 | Every vue component returning Cannot read property 'parseComponent' of undefined | <p>So i've tried researching this but none of the solutions are working. I think it's specifically an issue with some of my vue dependencies, potentially <code>vue-loader</code>, but I'm not sure what specifically to do to fix it. I have tried: </p>
<ul>
<li>deleting <code>node_modules</code> and re-running <code>npm ... | 62,102,017 | 7 | 9 | null | 2020-01-22 20:02:03.94 UTC | 5 | 2022-09-07 04:07:39.41 UTC | 2020-01-22 21:08:15.437 UTC | null | 3,812,918 | null | 3,812,918 | null | 1 | 29 | laravel|vue.js|npm | 37,675 | <p>I had exacly the same problem and just figured it out, I hope this helps someone.
First I changed the vue template compiler to:</p>
<blockquote>
<p>"vue-template-compiler": "2.6.11"</p>
</blockquote>
<p>and the I also had to change the vue version to the latest realese, in my case:</p>
<blockquote>
<p>"vue": ... |
8,382,536 | Allow a custom Attribute only on specific type | <p>Is there a way to force the compiler to restrict the usage of a custom attribute to be used only on specific <strong>property</strong> types like int, short, string (all the primitive types)?<br>
similar to the <a href="http://msdn.microsoft.com/en-us/library/system.attributeusageattribute%28v=vs.95%29.aspx">Attribu... | 8,382,559 | 5 | 4 | null | 2011-12-05 08:13:57.52 UTC | 1 | 2022-03-17 09:34:41.96 UTC | 2013-05-29 15:25:15.097 UTC | null | 773,113 | null | 601,179 | null | 1 | 47 | c#|.net|compiler-construction|attributes | 30,507 | <p>No, you can't, basically. You can limit it to <code>struct</code> vs <code>class</code> vs <code>interface</code>, that is about it. Plus: you can't add attributes to types outside your code anyway (except for via <code>TypeDescriptor</code>, which isn't the same).</p> |
5,031,675 | Where does paging, sorting, etc go in repository pattern? | <p>Where do we put the logic for paging and sorting data in an asp.net repository pattern project?</p>
<p>Should it go in the service layer or put it in the controller and have the controller directly call the repository? Controller -> Repository is shown <a href="http://highoncoding.com/Articles/566_JQuery_jqGrid_Exp... | 5,036,023 | 5 | 1 | null | 2011-02-17 16:28:08.73 UTC | 12 | 2011-02-17 23:28:41.63 UTC | 2011-02-17 16:34:00.877 UTC | null | 400,861 | null | 400,861 | null | 1 | 19 | asp.net-mvc|asp.net-mvc-3|repository-pattern | 16,391 | <p>It should go in the Repository if your Repository returns materialized sequences (<code>ICollection<T></code>, <code>List<T></code>), etc.</p>
<p>But if your returning <code>IQueryable<T></code> (like i am), i hope you have a service layer mediating between your Controllers and Repository, which e... |
5,285,857 | When is using MySQL BLOB recommended? | <p>I'm coding an application that will be uploading and deleting many files, i usually just move the files to a folder in the server naming them with the row unique <code>id</code>. But as i understand MySQL also lets me store binary data (files) when would this be a better choice?.</p>
<blockquote>
<p>Please use so... | 5,285,903 | 5 | 1 | null | 2011-03-12 22:14:29.39 UTC | 6 | 2014-03-06 17:04:48.433 UTC | 2017-05-23 12:16:51.87 UTC | null | -1 | null | 459,688 | null | 1 | 19 | mysql|filesystems|blob | 43,539 | <p>Read:</p>
<ul>
<li><a href="https://stackoverflow.com/questions/4654004/mysql-binary-storage-using-blob-vs-os-file-system-large-files-large-quantities">MySQL Binary Storage using BLOB VS OS File System: large files, large quantities, large problems</a></li>
<li><a href="https://stackoverflow.com/questions/815626/to... |
5,512,023 | Ruby on Rails 3 : "superclass mismatch for class ..." | <p>Platform: Mac OSX 10.6</p>
<p>In my terminal, i start the Ruby console with "rails c"</p>
<p>While following the Ruby on Rails 3 tutorial to build a class:</p>
<pre><code>class Word < String
def palindrome? #check if a string is a palindrome
self == self.reverse
end
end
</code></pre>
<p>i get the err... | 5,512,173 | 5 | 0 | null | 2011-04-01 10:20:21.767 UTC | 11 | 2020-05-09 19:31:24.883 UTC | 2018-05-20 23:07:43.383 UTC | null | 479,863 | null | 605,948 | null | 1 | 69 | ruby-on-rails|ruby|ruby-on-rails-3 | 78,013 | <p>You already have a <code>Word</code> class defined elsewhere. I tried within a Rails 3 app but was not able to replicate.</p>
<p>If you have not created a second <code>Word</code> class yourself, it is likely one of your Gems or plugins already defines it.</p> |
4,954,741 | How to ping IP addresses using JavaScript | <p>I want to run a JavaScript code to ping 4 different IP addresses and then retrieve the packet loss and latency of these ping requests and display them on the page.</p>
<p>How do I do this?</p> | 4,954,789 | 8 | 2 | null | 2011-02-10 08:14:33.513 UTC | 9 | 2021-08-04 02:29:24.657 UTC | 2011-02-10 08:16:17.79 UTC | null | 313,758 | null | 434,885 | null | 1 | 9 | javascript|ping|latency | 81,817 | <p>You can't do this from JS. What you could do is this:</p>
<pre><code> client --AJAX-- yourserver --ICMP ping-- targetservers
</code></pre>
<p>Make an AJAX request to your server, which will then ping the target servers for you, and return the result in the AJAX result. </p>
<p>Possible caveats:</p>
<ul>
<li>this... |
5,383,074 | How is an "int" assigned to an object? | <p>How are we able to assign an integer to an object in .NET?</p>
<p>Reference types are derived from System.Object and value types are from System.ValueType.</p>
<p>So, how is it possible?</p> | 5,383,104 | 9 | 0 | null | 2011-03-21 20:13:21.14 UTC | 4 | 2016-05-20 12:37:18.133 UTC | 2016-05-20 12:37:18.133 UTC | null | 1,465,171 | null | 670,110 | null | 1 | 13 | c#|.net|types | 41,528 | <p>If you look at <a href="http://msdn.microsoft.com/en-us/library/system.valuetype.aspx" rel="nofollow noreferrer"><code>System.ValueType</code></a>, it too derives from <code>System.Object</code></p>
<p>Also see <a href="https://stackoverflow.com/questions/1682231/how-do-valuetypes-derive-from-object-referencetype-a... |
5,166,842 | sort dates in python array | <p>How to sort the below array of dates on python 2.4</p>
<pre><code> timestamps = ['2011-06-2', '2011-08-05', '2011-02-04', '2010-1-14', '2010-12-13', '2010-1-12', '2010-2-11', '2010-2-07', '2010-12-02', '2011-11-30', '2010-11-26', '2010-11-23', '2010-11-22', '2010-11-16']
</code></pre> | 5,166,911 | 9 | 1 | null | 2011-03-02 11:29:41.57 UTC | 9 | 2020-02-26 17:43:35.997 UTC | null | null | null | null | 277,603 | null | 1 | 27 | python | 104,374 | <pre><code>sorted(timestamps, key=lambda d: map(int, d.split('-')))
</code></pre> |
4,852,251 | Is there a software-engineering methodology for functional programming? | <p>Software Engineering as it is taught today is entirely focused on object-oriented programming and the 'natural' object-oriented view of the world. There is a detailed methodology that describes how to transform a domain model into a class model with several steps and a lot of (UML) artifacts like use-case-diagrams o... | 4,905,458 | 13 | 9 | null | 2011-01-31 14:50:30.083 UTC | 152 | 2018-01-19 10:36:30.7 UTC | null | null | null | null | 783,306 | null | 1 | 204 | functional-programming|clojure|lisp|model-driven-development | 23,116 | <p>Thank God that the software-engineering people have not yet discovered functional programming. Here are some parallels:</p>
<ul>
<li><p>Many OO "design patterns" are captured as higher-order functions. For example, the Visitor pattern is known in the functional world as a "fold" (or if you are a pointy-headed the... |
29,542,356 | Xcode 6.3 Crashes when navigating from storyboard to other Swift 1.2 file | <p>I installed Xcode 6.3 which includes support for Swift 1.2. It turned up a ton of error messages, which are mostly casting issues. </p>
<p>I navigated to the storyboard, and cannot go back to any other <code>.swift</code> without the whole thing crashing. I have force quit, restarted, and even re-installed, and I s... | 29,543,801 | 8 | 12 | null | 2015-04-09 15:11:43.043 UTC | 15 | 2017-02-06 14:41:50.767 UTC | 2017-05-23 11:45:24.007 UTC | null | -1 | null | 106,611 | null | 1 | 80 | ios|swift|xcode | 5,768 | <p>I gather from the apple developer forums that this is an <strong>@IBDesignable</strong> issue. Especially in projects that use custom fonts, additional xibs, etc. </p>
<p>I have somehow fixed my issue by removing all <strong>@IBDesignable</strong> from swift UIView class definitions. You can open your project direc... |
12,162,860 | How can I render line faster than CGContextStrokePath? | <p>I'm plotting ~768 points for a graph using CGContextStrokePath. The problem is that every second I get a new data point, and thus redraw the graph. This is currently taking 50% CPU in what's already a busy App. </p>
<p><img src="https://i.stack.imgur.com/YmrCr.png" alt="graph"></p>
<p><img src="https://i.stack.i... | 12,168,863 | 3 | 2 | null | 2012-08-28 15:43:49.15 UTC | 9 | 2012-08-28 23:14:43.533 UTC | null | null | null | null | 345,165 | null | 1 | 8 | ios|performance|cgcontext | 2,768 | <p>Let's implement a graphing view that uses a bunch of tall, skinny layers to reduce the amount of redrawing needed. We'll slide the layers to the left as we add samples, so at any time, we probably have one layer hanging off the left edge of the view and one hanging off the right edge of the view:</p>
<p><img src="... |
12,609,527 | Why isn't Try/Catch used more often in JavaScript? | <p>It seems like with other languages that support Try/Catch, developers make use of that feature more than they do in JavaScript. Is there a reason for this? Is the JS implementation of Try/Catch flawed?</p> | 12,609,630 | 5 | 5 | null | 2012-09-26 20:05:21.883 UTC | 7 | 2017-06-17 16:39:55.687 UTC | null | null | null | null | 55,589 | null | 1 | 38 | javascript | 16,691 | <p>Try taking a look at this article: <a href="http://dev.opera.com/articles/view/efficient-javascript/?page=2#trycatch" rel="noreferrer">http://dev.opera.com/articles/view/efficient-javascript/?page=2#trycatch</a></p>
<p><em>From the above link:</em></p>
<p>The try-catch-finally construct is fairly unique. Unlike ot... |
12,594,070 | dyld: Library not loaded different behavior for 6.0 simulator/6.0 device | <p>My app runs fine on the iPhone 6.0 Simulator in Xcode, but when I try to run it on my 6.0 device, I get the following fatal error:</p>
<p>dyld: Library not loaded: /System/Library/Frameworks/AdSupport.framework/AdSupport
Referenced from: /var/mobile/Applications/26329A7C-04B0-415A-B8EB-3C59CC1EC0B1/hammerhead.app... | 12,812,450 | 3 | 1 | null | 2012-09-26 03:14:43.88 UTC | 10 | 2014-10-06 13:59:56.517 UTC | 2012-10-11 06:09:16.97 UTC | null | 859,492 | null | 1,464,728 | null | 1 | 39 | xcode|cocoa-touch|ios6|dyld|ios-frameworks | 13,105 | <p>If you're targeting iOS versions less than 6.0, you'll need to make AdSupport.framework, Social.framework, and Accounts.framework optionally-linked.</p>
<p>Please have a look at the attached screenshot.</p>
<p>Cheers!!!<img src="https://i.stack.imgur.com/VcHpb.png" alt="enter image description here"></p> |
12,530,406 | Is gcc 4.8 or earlier buggy about regular expressions? | <p>I am trying to use std::regex in a C++11 piece of code, but it appears that the support is a bit buggy. An example:</p>
<pre><code>#include <regex>
#include <iostream>
int main (int argc, const char * argv[]) {
std::regex r("st|mt|tr");
std::cerr << "st|mt|tr" << " matches st? " <... | 12,665,408 | 3 | 15 | null | 2012-09-21 12:13:43.107 UTC | 25 | 2017-07-10 18:32:30.903 UTC | 2015-09-27 04:24:53.357 UTC | null | 2,756,719 | null | 25,418 | null | 1 | 105 | c++|regex|gcc|c++11|libstdc++ | 37,180 | <p><strong><code><regex></code> was implemented and released in GCC 4.9.0.</strong></p>
<p>In your (older) version of GCC, it is <a href="http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53631" rel="noreferrer">not implemented</a>.</p>
<p>That prototype <code><regex></code> code was added when all of GCC's C++... |
12,163,433 | Inserting a multiple records in a table with while loop | <p>I want to insert couple of hundred rows into a table that points to pk in other table. I have been trying to use while loops for inserting multiple records in the table. I am actually setting up my test data.</p>
<p>This is what I am doing :</p>
<pre><code>declare @count int;
set @count = 4018;
while @count <=... | 12,163,553 | 2 | 6 | null | 2012-08-28 16:17:10.72 UTC | 1 | 2012-08-28 16:55:56.817 UTC | 2012-08-28 16:23:20.097 UTC | null | 1,630,846 | null | 1,630,846 | null | 1 | -5 | sql|sql-server|tsql | 62,576 | <p>Your current syntax problem is with the <code>@count = @count + 1;</code> which needs to be <code>set @count = @count + 1</code>.</p>
<p>But...</p>
<p>There is no need for a loop. You can simply do one big insert directly, like:</p>
<pre><code>insert into your_table (fk_col, other_col1, other_col2)
select pk_col,... |
18,888,220 | How to check whether java is installed on the computer | <p>I am trying to install java windows application on client machine.I want to check whether
requried JRE is installed on the machine or not. I want to check it by java program not by cmd command</p> | 18,888,250 | 12 | 4 | null | 2013-09-19 07:04:52.457 UTC | 6 | 2019-05-29 17:02:05.663 UTC | 2013-12-02 06:33:39.71 UTC | null | 2,791,255 | null | 2,791,255 | null | 1 | 34 | java|runtime | 242,134 | <p>if you are using windows or linux operating system then type in command prompt / terminal</p>
<pre><code>java -version
</code></pre>
<p>If java is correctly installed then you will get something like this</p>
<pre><code>java version "1.7.0_25"
Java(TM) SE Runtime Environment (build 1.7.0_25-b15)
Java HotSpot(TM) ... |
19,025,841 | How to update some data in a Listview without using notifyDataSetChanged()? | <p>I'm trying to create a <code>ListView</code> with a list of downloading tasks.</p>
<p>The downloading tasks are managed in a <code>Service</code> (DownloadService). Everytime a chunk of data is received, the task sends the progress via a <code>Broadcast</code>, received by the <code>Fragment</code> containing the <... | 19,090,832 | 3 | 5 | null | 2013-09-26 10:34:24.483 UTC | 18 | 2013-10-04 18:21:55.23 UTC | 2013-09-29 01:34:44.137 UTC | null | 326,849 | null | 326,849 | null | 1 | 23 | android|listview|notifydatasetchanged | 19,947 | <p>Of course, As <strong>pjco</strong> stated, do not update at that speed. I would recommend sending broadcasts at intervals. Better yet, have a container for the data such as progress and update every interval by polling.</p>
<p>However, I think it is a good thing as well to update the listview at times without <cod... |
18,761,404 | How to scale images on a html5 canvas with better interpolation? | <p>First of all: what am I trying to do?</p>
<p>I have an application to view images. It uses the canvas element to render the image. You can zoom in, you can zoom out, and you can drag it around. This part works perfectly right now.</p>
<p>But let's say I have an image with a lot of text. It has a resolution of 1200... | 18,765,964 | 1 | 6 | null | 2013-09-12 10:11:31.557 UTC | 19 | 2019-02-03 02:24:02.797 UTC | 2019-02-03 02:24:02.797 UTC | null | 4,298,200 | null | 2,772,067 | null | 1 | 43 | javascript|html|canvas|scaling|interpolation | 52,140 | <p>You need to "step down" several times. Instead of scaling from a very large image to a very small, you need to re-scale it to intermediary sizes.</p>
<p>Consider an image you want to draw at 1/6 scale. You could do this:</p>
<pre><code>var w = 1280;
var h = 853;
ctx.drawImage(img, 0, 0, w/6, h/6);
</code></pre... |
19,246,103 | socket.error:[errno 99] cannot assign requested address and namespace in python | <p>My server software says <code>errno99: cannot assign requested address</code> while using an ip address other than <code>127.0.0.1</code> for binding.</p>
<p>But if the IP address is <code>127.0.0.1</code> it works.
Is it related to namespaces?</p>
<p>I am executing my server and client codes in another python pro... | 19,267,994 | 5 | 7 | null | 2013-10-08 11:07:45.34 UTC | 26 | 2022-02-07 15:03:32.307 UTC | 2013-10-09 09:03:50.177 UTC | null | 929,999 | null | 2,833,462 | null | 1 | 68 | python|sockets|namespaces|ip | 349,309 | <p>Stripping things down to basics this is what you would want to test with:</p>
<pre><code>import socket
server = socket.socket()
server.bind(("10.0.0.1", 6677))
server.listen(4)
client_socket, client_address = server.accept()
print(client_address, "has connected")
while True:
recvieved_data... |
24,060,498 | org.hibernate.exception.SQLGrammarException: could not prepare statement | <p>I have created two entities and am trying to fill one with data after loading it, to show it as a drop down list.</p>
<p>I got the error</p>
<blockquote>
<p>org.hibernate.exception.SQLGrammarException: could not prepare statement</p>
</blockquote>
<p>The <code>Group</code> entity that must be in the drop down l... | 24,060,905 | 9 | 4 | null | 2014-06-05 12:40:26 UTC | null | 2022-04-14 13:56:04.937 UTC | 2018-08-29 23:11:54.773 UTC | null | 9,238,547 | null | 3,706,420 | null | 1 | 11 | java|hibernate|jpa | 107,979 | <p>The table name you used, <code>GROUP</code>, is a reserved keyword for h2 databases.
Rename your table with a name like <code>ADMIN_GROUP</code>.</p>
<p>Here's an extract from <a href="http://www.h2database.com/html/advanced.html#compatibility" rel="noreferrer">the h2 documentation</a>:</p>
<blockquote>
<p>Keywords ... |
19,121,367 | UITextViews in a UITableView link detection bug in iOS 7 | <p>I have custom UITableViewCells that contain a UITextView. I have link detection in the UITextView turned on in Interface Builder. When I first load the table view, everything seems to be working, but as I scroll up and down the table view, the link detection gets messed up. Specifically, cells that just have regular... | 19,128,056 | 13 | 10 | null | 2013-10-01 16:28:25.927 UTC | 9 | 2015-12-12 14:58:43.217 UTC | 2013-10-02 00:08:11.063 UTC | null | 472,344 | null | 472,344 | null | 1 | 46 | ios|uitableview|uitextview|ios7 | 14,682 | <p>This appears to be a bug in iOS 7.0's <code>UITextView</code>s. A <a href="https://stackoverflow.com/a/18968687/774">similar question</a> has a workaround which seems to help: set the text view's text to <code>nil</code> before setting it to the new text string.</p> |
8,973,529 | Retrieve an object from entityframework without ONE field | <p>I'm using entity framework to connect with the database. I've one little problem:</p>
<p>I've one table which have one varbinary(MAX) column(with filestream).</p>
<p>I'm using SQL request to manage the "Data" part, but EF for the rest(metadata of the file).</p>
<p>I've one code which has to get all files id, file... | 8,975,420 | 9 | 9 | null | 2012-01-23 14:52:57.907 UTC | 11 | 2021-07-13 01:31:25.84 UTC | 2012-01-23 18:51:27.353 UTC | null | 100,283 | null | 397,830 | null | 1 | 67 | c#|.net|sql|entity-framework | 59,350 | <blockquote>
<p>Is there a way to retrieve a List but without this column filled?</p>
</blockquote>
<p>Not without projection which you want to avoid. If the column is mapped it is natural part of your entity. Entity without this column is not complete - it is different data set = projection. </p>
<blockquote>
<... |
8,798,707 | Securing communication [Authenticity, Privacy & Integrity] with mobile app? | <p>An Android/Iphone app will be accessing application data from the server.
[Django-Python]</p>
<p>How can I secure the communication with the mobile app ?</p>
<p><strong>Expectation</strong> : Secure enough for sensitive information like passwords, there shall be no direct way of decryption except brute-forcing.</... | 8,803,983 | 3 | 15 | null | 2012-01-10 04:51:26.983 UTC | 16 | 2014-01-17 03:09:32.557 UTC | 2012-02-10 06:05:26.397 UTC | null | 731,963 | null | 731,963 | null | 1 | 34 | android|iphone|python|django|security | 6,980 | <p>You're working on bad information. SSL can absolutely authenticate the client, it's just not something that is done for the bulk of SSL as the protocol is (or, atleast was) typically used to protect e-commerce sites where authentication of the server was important but doing so with the client was not important and/o... |
22,450,036 | Refreshing OAuth token using Retrofit without modifying all calls | <p>We are using Retrofit in our Android app, to communicate with an OAuth2 secured server. Everything works great, we use the RequestInterceptor to include the access token with each call.
However there will be times, when the access token will expire, and the token needs to be refreshed. When the token expires, the ne... | 31,624,433 | 10 | 14 | null | 2014-03-17 08:52:00.873 UTC | 138 | 2021-09-08 18:17:54.773 UTC | 2014-03-17 10:19:18.17 UTC | null | 1,395,437 | null | 1,395,437 | null | 1 | 203 | android|oauth-2.0|retrofit | 100,140 | <p>Please do not use <code>Interceptors</code> to deal with authentication.</p>
<p>Currently, the best approach to handle authentication is to use the new <a href="https://square.github.io/okhttp/3.x/okhttp/okhttp3/Authenticator.html" rel="noreferrer"><code>Authenticator</code></a> API, designed specifically for <a hre... |
11,352,301 | How to use DoEvents() without being "evil"? | <p>A simple <a href="http://www.google.com/search?q=doevents">search for <code>DoEvents</code></a> brings up lots of results that lead, basically, to:</p>
<blockquote>
<p><code>DoEvents</code> is evil. Don't use it. Use threading instead.</p>
</blockquote>
<p>The reasons generally cited are:</p>
<ul>
<li>Re-entran... | 11,352,575 | 3 | 1 | null | 2012-07-05 20:45:29.643 UTC | 17 | 2019-09-17 21:21:11.353 UTC | null | null | null | null | 541,686 | null | 1 | 25 | windows|winforms|winapi|visual-c++|doevents | 9,659 | <p>DoEvents() is <em>dangerous</em>. But I bet you do lots of dangerous things every day. Just yesterday I set off a few explosive devices (future readers: note the original post date relative to a certain American holiday). With care, we can sometimes account for the dangers. Of course, that means knowing and understa... |
10,898,035 | How to get node value / innerHTML with XPath? | <p>I have a XPath to select to a class I want: <code>//div[@class='myclass']</code>. But it returns me the whole div (with the <code><div class='myclass'></code> also, but I would like to return only the contents of this tag without the tag itself. How can I do it?</p> | 10,899,531 | 4 | 0 | null | 2012-06-05 13:16:41.853 UTC | 9 | 2020-06-05 01:38:42.413 UTC | 2017-10-06 19:46:47.24 UTC | null | 290,085 | null | 38,940 | null | 1 | 40 | xml|parsing|xpath|html-parsing | 89,301 | <p>With xpath, the thing you will get returned is the last thing in the path that is not a condition. What that means? Well, conditions are the stuff between <code>[]</code>'s (but you already knew that) and yours reads like <em>pathElement[<strong>that has a 'class' attribute with value 'my class'</strong>]</em>. The ... |
11,196,367 | Processing single file from multiple processes | <p>I have a single big text file in which I want to process each line ( do some operations ) and store them in a database. Since a single simple program is taking too long, I want it to be done via multiple processes or threads.
Each thread/process should read the DIFFERENT data(different lines) from that single file ... | 11,196,615 | 3 | 1 | null | 2012-06-25 19:54:19.44 UTC | 62 | 2018-11-27 02:31:35.897 UTC | 2018-11-27 02:31:35.897 UTC | null | 355,230 | null | 1,174,984 | null | 1 | 86 | python|multithreading|multiprocessing | 62,725 | <p>What you are looking for is a Producer/Consumer pattern</p>
<p><strong>Basic threading example</strong></p>
<p>Here is a basic example using the <a href="http://docs.python.org/library/threading.html" rel="noreferrer">threading module</a> (instead of multiprocessing)</p>
<pre><code>import threading
import Queue
i... |
11,420,520 | PHP variables in anonymous functions | <p>I was playing around with anonymous functions in PHP and realized that they don't seem to reach variables outside of them.
Is there any way to get around this problem?</p>
<p>Example:</p>
<pre><code>$variable = "nothing";
functionName($someArgument, function() {
$variable = "something";
});
echo $variable; //... | 11,420,541 | 2 | 0 | null | 2012-07-10 19:30:07.78 UTC | 26 | 2021-09-15 16:43:30.347 UTC | 2019-10-01 16:56:13.457 UTC | null | 1,255,289 | null | 1,228,540 | null | 1 | 144 | php|function|variables|global-variables|anonymous | 55,739 | <p>Yes, <a href="http://php.net/closure" rel="noreferrer">use a closure</a>:</p>
<pre><code>functionName($someArgument, function() use(&$variable) {
$variable = "something";
});
</code></pre>
<p>Note that in order for you to be able to modify <code>$variable</code> and retrieve the modified value outside of the... |
13,053,660 | mysqli_query, mysqli_fetch_array and while loop | <p>I am new to PHP and I am trying to build a website using PHP. I have localhost for testing the result and I have phpmyadmin already installed on the website.</p>
<p>What i am trying to do now, is to list the contents of my table "property" from database "portal" and fill a table with the results.</p>
<p>I am using... | 13,053,716 | 6 | 0 | null | 2012-10-24 16:38:11.17 UTC | null | 2017-04-25 20:55:03.637 UTC | 2012-10-24 16:43:20.703 UTC | null | 206,403 | null | 1,771,795 | null | 1 | 6 | php|mysql | 58,562 | <p>Replace your query with this. Make sure you have added this line before.</p>
<pre><code>$db = mysql_select_db('portal');
$sqlCommand = "SELECT * FROM property";
</code></pre> |
13,068,257 | Multiprocessing scikit-learn | <p>I got linearsvc working against training set and test set using <code>load_file</code> method i am trying to get It working on Multiprocessor enviorment.</p>
<p>How can i get multiprocessing work on <code>LinearSVC().fit()</code> <code>LinearSVC().predict()</code>? I am not really familiar with datatypes of scikit... | 13,082,746 | 2 | 10 | null | 2012-10-25 12:10:03.3 UTC | 10 | 2013-12-13 14:55:42.94 UTC | 2012-10-26 14:49:32.787 UTC | null | 200,044 | null | 200,044 | null | 1 | 10 | python|multithreading|numpy|machine-learning|scikit-learn | 11,552 | <p>I think using SGDClassifier instead of LinearSVC for this kind of data would be a good idea, as it is much faster. For the vectorization, I suggest you look into the <a href="https://github.com/scikit-learn/scikit-learn/pull/909" rel="noreferrer">hash transformer PR</a>.</p>
<p>For the multiprocessing: You can dist... |
12,790,297 | Hiding button using jQuery | <p>Can someone please tell me how I can hide this button after pressing it using jQuery?</p>
<pre><code><input type="button" name="Comanda" value="Comanda" id="Comanda" data-clicked="unclicked" />
</code></pre>
<p>Or this one:</p>
<pre><code><input type=submit name="Vizualizeaza" value="Vizualizeaza">
<... | 12,790,323 | 4 | 0 | null | 2012-10-08 22:21:14.287 UTC | 2 | 2019-05-12 07:37:45.363 UTC | 2019-05-12 07:37:45.363 UTC | null | 6,296,561 | null | 1,725,664 | null | 1 | 20 | javascript|jquery|button | 152,395 | <p>Try this:</p>
<pre><code>$('input[name=Comanda]')
.click(
function ()
{
$(this).hide();
}
);
</code></pre>
<p>For doing everything else you can use something like this one:</p>
<pre><code>$('input[name=Comanda]')
.click(
function ()
{
$(this).hide();
$(".ClassN... |
13,044,814 | How to register multiple models with the admin? | <p>If I want to register my models with the admin I have to do this like this:</p>
<pre><code>#admin.py
admin.site.register(models.About)
</code></pre>
<p>But with multiple models you <strong>can't</strong> do something like this:</p>
<pre><code>models = (models.Project, models.Client, models.About)
for m in models:... | 13,044,950 | 8 | 1 | null | 2012-10-24 07:43:24.3 UTC | 8 | 2021-10-11 14:03:29.623 UTC | null | null | null | null | 1,105,929 | null | 1 | 31 | django|django-admin | 28,737 | <p><code>admin.site.register</code> has this definition in the library: </p>
<pre><code>def register(self, model_or_iterable, admin_class=None, **options):
</code></pre>
<p>so models to be registered can be a single model or iterable object so just use this:</p>
<pre><code>myModels = [models.Project, models.Client, ... |
16,610,612 | Create HTTPS server with node js | <p>I want to create a https server for my localhost.<br/>
Node JS documentation provides out of the box solution but I have some confusion with it.
<strong>Example</strong></p>
<pre><code>var https = require('https');
var fs = require('fs');
var options = {
key: fs.readFileSync('test/fixtures/keys/agent2-key.pem'),... | 16,613,647 | 3 | 0 | null | 2013-05-17 13:43:26.48 UTC | 14 | 2019-05-10 21:56:20.38 UTC | null | null | null | null | 1,101,083 | null | 1 | 21 | node.js|https | 14,309 | <p>For development purposes you can create a self-certified certificate.
Here's how to do it on a linux-based system:</p>
<p>First, generate a private key</p>
<pre><code>openssl genrsa 1024 > key.pem
</code></pre>
<p>This will store a 1024 bit RSA key in the file key.pem</p>
<p>Then, generate an SSL certificate ... |
17,125,505 | What makes a better constant in C, a macro or an enum? | <p>I am confused about when to use macros or enums. Both can be used as constants, but what is the difference between them and what is the advantage of either one? Is it somehow related to compiler level or not?</p> | 17,125,538 | 7 | 1 | null | 2013-06-15 16:05:25.413 UTC | 17 | 2022-02-04 17:05:25.463 UTC | 2013-06-19 08:47:46.24 UTC | null | 648,658 | null | 2,464,707 | null | 1 | 43 | c|macros|enums | 31,951 | <p>In terms of readability, enumerations make better constants than macros, because related values are grouped together. In addition, <code>enum</code> defines a new type, so the readers of your program would have easier time figuring out what can be passed to the corresponding parameter.</p>
<p>Compare</p>
<pre><code>... |
16,800,255 | How do we do both left and right folds in Clojure? | <p>Reduce works fine but it is more like fold-left.
Is there any other form of reduce that lets me fold to right ?</p> | 41,775,034 | 2 | 0 | null | 2013-05-28 11:20:40.177 UTC | 17 | 2017-01-21 02:02:44.53 UTC | null | null | null | Amogh Talpallikar | 961,021 | null | 1 | 48 | clojure | 7,112 | <p>Let's look at a possible definition of each:</p>
<pre><code>(defn foldl [f val coll]
(if (empty? coll) val
(foldl f (f val (first coll)) (rest coll))))
(defn foldr [f val coll]
(if (empty? coll) val
(f (foldr f val (rest coll)) (first coll))))
</code></pre>
<p>Notice that only <code>foldl</code> is in... |
16,834,245 | C# declare empty string array | <p>I need to declare an empty string array and i'm using this code</p>
<pre><code>string[] arr = new String[0]();
</code></pre>
<p>But I get "method name expected" error.</p>
<p>What's wrong?</p> | 16,834,388 | 9 | 9 | null | 2013-05-30 10:52:01.303 UTC | 15 | 2021-07-02 14:13:10.737 UTC | 2018-05-17 21:26:44.303 UTC | null | 2,840,103 | null | 2,336,575 | null | 1 | 192 | c#|arrays|string | 356,353 | <p>Try this</p>
<pre><code>string[] arr = new string[] {};
</code></pre> |
25,607,216 | Why should I prefer the "explicitly typed initializer" idiom over explicitly giving the type | <p>I've recently bought the new Effective modern C++ from Scott Meyers and reading through it now. But I have encountered one thing which totally bugs me.</p>
<p>In item 5, Scott says that using <code>auto</code> is a great thing. It saves typing, gives you in most cases the correct type and it might be immune to type... | 25,609,753 | 4 | 8 | null | 2014-09-01 13:45:21.677 UTC | 6 | 2020-02-13 09:40:33.23 UTC | 2020-02-13 09:40:33.23 UTC | null | 12,409,240 | null | 2,489,745 | null | 1 | 44 | c++|c++11|effective-c++ | 2,679 | <p>Following the C++ Standard:</p>
<blockquote>
<h3><strong>§ 8.5 Initializers <code>[dcl.init]</code></strong></h3>
<ol start="15">
<li><p>The initialization that occurs in the form</p>
<pre><code>T x = a;
</code></pre>
<p>as well as in argument passing, function return, throwing an exception (15.1), h... |
62,601,538 | Passing a function in the useEffect dependency array causes infinite loop | <p>Why is an infinite loop created when I pass a function expression into the useEffect dependency array? The function expression does not alter the component state, it only references it.</p>
<pre><code>// component has one prop called => sections
const markup = (count) => {
const stringCountCorrection = co... | 62,601,621 | 2 | 1 | null | 2020-06-26 19:21:48.923 UTC | 7 | 2022-06-22 16:54:31.087 UTC | 2022-06-22 16:54:31.087 UTC | null | 1,264,804 | null | 8,142,680 | null | 1 | 47 | reactjs|react-hooks|use-effect|usecallback | 49,383 | <p>The issue is that upon each render cycle, <code>markup</code> is redefined. React uses shallow object comparison to determine if a value updated or not. Each render cycle <code>markup</code> has a different reference. You can use <code>useCallback</code> to memoize the function though so the reference is stable. Do ... |
4,741,164 | Javascript: Get div inside of div | <p>I have two divs nested like so:</p>
<pre><code><div id="upper">
<div id="lower" name="moo">
</div>
</div>
</code></pre>
<p>How would I, using jQuery or JavaScript alone, can I get the name of that lower nested div?</p> | 4,741,174 | 2 | 3 | null | 2011-01-19 21:46:22.7 UTC | 3 | 2018-10-24 13:22:15.517 UTC | null | null | null | null | 270,483 | null | 1 | 12 | javascript|jquery | 64,145 | <pre><code>var nameValue = $('#lower').attr('name');
</code></pre>
<p>But if you really want to use the outer <code>div</code> to select the inner one:</p>
<pre><code>var nameValue = $('#upper > div').attr('name');
</code></pre>
<p>Or</p>
<pre><code>var nameValue = $('#upper #lower').attr('name');
</code></pre>
... |
4,340,349 | Running unit tests from currently opened file in IntelliJ IDEA | <p>Is there any way to have IntelliJ run the current MyTest.java file I'm looking at? </p>
<p>Thanks</p> | 4,341,210 | 2 | 0 | null | 2010-12-02 21:52:59.13 UTC | 2 | 2020-01-21 08:24:39.377 UTC | 2020-01-21 08:24:39.377 UTC | null | 814,702 | null | 12,503 | null | 1 | 29 | java|unit-testing|intellij-idea | 9,980 | <p>Yeah, you can either:</p>
<ol>
<li>Right click on the file and go to
<blockquote>
<p>Run 'MyTest'</p>
</blockquote></li>
<li>Use the key binding: if the <em>caret</em> is in a method on that method will be run
<ul>
<li>on a Mac: it's <kbd>Control</kbd>+<kbd>Fn</kbd>+<kbd>Shift</kbd>+<kbd>F10</kbd></li>
<li>else... |
4,218,847 | HtmlAgilityPack -- Does <form> close itself for some reason? | <p>I just wrote up this test to see if I was crazy...</p>
<pre><code>using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using HtmlAgilityPack;
namespace HtmlAgilityPackFormBug
{
class Program
{
static void Main(string[] args)
{
var doc = new HtmlD... | 4,219,060 | 2 | 6 | null | 2010-11-18 19:44:19.713 UTC | 5 | 2013-05-08 21:50:57.22 UTC | 2010-11-18 20:19:52.743 UTC | null | 65,387 | null | 65,387 | null | 1 | 34 | c#|html-agility-pack | 5,255 | <p>This is also reported in <a href="http://htmlagilitypack.codeplex.com/workitem/23074" rel="noreferrer">this workitem</a>. It contains a suggested workaround from DarthObiwan.</p>
<blockquote>
<p>You can change this without recompiling. The ElementFlags list is a
static property on the HtmlNode class. It can be... |
10,025,660 | Override home and back button is case a boolean is true | <p>I was wondering if I can override the action of the back and home button is some cases. Normally these buttons should just react like they always do, but in a case some setting is true I want to override the buttons and let them call my own methods.</p>
<p>I´m using these two methods to override these buttons:</p>
... | 10,025,904 | 6 | 0 | null | 2012-04-05 09:02:49.883 UTC | 20 | 2015-06-13 05:11:32.937 UTC | 2012-11-24 12:49:21.67 UTC | null | 739,270 | null | 1,062,575 | null | 1 | 10 | android|button|overriding|back-button | 22,565 | <blockquote>
<p>I was wondering if I can override the action of the back and home button is some cases.</p>
</blockquote>
<p>Yes you can do override <code>Home</code> button.</p>
<p>I have developed an application which disable hard button, you can have a look.
I have taken a <strong>toggle button</strong> which lo... |
10,143,784 | C can't compile - symbol(s) not found for architecture x86_64 | <p>Having a serious problem with my C code, I just don't seem to be able to get it to compile and I really can't figure out why. </p>
<p>I have tried researching online and can't find a solution to the problem, do you have any idea?</p>
<p>Thanks for your time!</p>
<pre><code>Undefined symbols for architecture x86_6... | 10,144,099 | 3 | 4 | null | 2012-04-13 15:29:11.343 UTC | 8 | 2012-10-06 05:16:54.52 UTC | null | null | null | null | 193,376 | null | 1 | 18 | c|compilation | 42,309 | <p>You can <em>compile</em>, but you cannot <em>link</em>.</p>
<p><code>part1.o</code> is using the functions you defined in your last <code>.h</code> file and the implementations cannot be found. When you link your program, you need to make sure you're linking in the object file(s) (or libraries) that contain the im... |
10,234,053 | RPM spec file - Is it possible to dynamically populate a spec file variable | <p>I have a spec file. I need to %define a spec variable that gets its value from a one line file on the system.</p>
<p>For example</p>
<pre><code>%define path `cat /home/user/path_file`
</code></pre>
<p>and in path_file is one line</p>
<pre><code>/var/www/html/hosts
</code></pre>
<p>This partially works. I say th... | 10,236,104 | 1 | 0 | null | 2012-04-19 18:03:06.06 UTC | 6 | 2019-04-19 17:49:15.173 UTC | 2019-04-19 17:49:15.173 UTC | null | 68,587 | null | 1,288,571 | null | 1 | 31 | rpm|rpmbuild|rpm-spec | 29,483 | <p>You can define rpmbuild variables with <code>%(cmd)</code> at the top of the spec file. Notice the command is in parenthesis, not curly brackets. An example:</p>
<pre><code>%define whoami %(whoami)
</code></pre>
<p>And elsewhere in the spec file, such as a script or the build/install sections, use the variable as ... |
10,246,831 | How to look at Bitmap objects in Visual Studio debugger? | <p>I am building a C# app that creates many bitmaps (System.Drawing.Image). Having the bitmaps seen in the debugger as pictures, would be of enormous help. The debugger has native support for XML files. Is there a way to see the pictures?</p> | 10,246,871 | 6 | 3 | null | 2012-04-20 13:05:21.453 UTC | 2 | 2019-04-16 09:18:42.827 UTC | null | null | null | null | 112,091 | null | 1 | 32 | c#|visual-studio-2010|debugging|c#-4.0|bitmap | 17,380 | <p>There is no debugger visualizer by default for Bitmap, so you might want to give this one a try: <a href="http://imagedebugvisualizer.codeplex.com/" rel="noreferrer">http://imagedebugvisualizer.codeplex.com/</a></p> |
9,809,180 | Why is JUnit 4 on Android not working? | <p>as the documentation of Android says, "Note that the Android testing API supports JUnit 3 code style, but not JUnit 4." (<a href="http://developer.android.com/guide/topics/testing/testing_android.html">Testing Fundamentals</a>). It should be clear that JUnit 4 cannot be used out of the box with Android.</p>
<p>But ... | 11,916,340 | 2 | 3 | null | 2012-03-21 16:51:16.403 UTC | 14 | 2015-10-05 07:38:11.48 UTC | null | null | null | null | 1,229,451 | null | 1 | 33 | java|android|junit4|dalvik|junit3 | 14,936 | <p><strong>Update 2015/10</strong></p>
<p>It is now possible via the AndroidJUnitRunner, which is part of the <a href="http://developer.android.com/tools/testing-support-library/index.html" rel="noreferrer">Android Testing Support Library</a>. In short, you need to do the following in a Gradle-based project:</p>
<ol>... |
28,226,229 | How to loop through dates using Bash? | <p>I have such bash script:</p>
<pre><code>array=( '2015-01-01', '2015-01-02' )
for i in "${array[@]}"
do
python /home/user/executeJobs.py {i} &> /home/user/${i}.log
done
</code></pre>
<p>Now I want to loop through a range of dates, e.g. 2015-01-01 until 2015-01-31.</p>
<p>How to achieve in Bash?</p>
<p... | 28,226,339 | 10 | 17 | null | 2015-01-29 22:55:05.467 UTC | 37 | 2022-09-20 23:00:11.877 UTC | 2019-12-25 12:09:22.857 UTC | null | 608,639 | null | 356,759 | null | 1 | 114 | bash|loops|date | 120,739 | <p>Using GNU date:</p>
<pre><code>d=2015-01-01
while [ "$d" != 2015-02-20 ]; do
echo $d
d=$(date -I -d "$d + 1 day")
# mac option for d decl (the +1d is equivalent to + 1 day)
# d=$(date -j -v +1d -f "%Y-%m-%d" $d +%Y-%m-%d)
done
</code></pre>
<p>Note that because this uses strin... |
11,658,011 | Cannot modify content of iframe, what is wrong? | <p>I am trying to modify content of an iframe but it does not work.</p>
<p>This is my main.html</p>
<pre><code><html>
<head><title>Main page</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
</head>
<body>
<h3>Main pa... | 11,658,546 | 3 | 7 | null | 2012-07-25 20:23:00.883 UTC | 5 | 2019-08-26 14:42:57.687 UTC | 2015-05-22 11:00:36.64 UTC | null | 1,793,718 | null | 1,313,296 | null | 1 | 13 | jquery|html | 46,817 | <p>Please don't forget the <code>cross-domain</code> policy, otherwise it won't work.</p>
<p><strong>Live demo:</strong> <a href="http://jsfiddle.net/oscarj24/wTWjF/" rel="nofollow noreferrer">http://jsfiddle.net/oscarj24/wTWjF/</a></p>
<p><em>(Just to know, I am not using a 404 page, take a look)</em></p>
<p>Try th... |
11,911,660 | Redirect console.writeline from windows application to a string | <p>I have an external dll written in C# and I studied from the assemblies documentation that it writes its debug messages to the Console using <code>Console.WriteLine</code>.</p>
<p>this DLL writes to console during my interaction with the UI of the Application, so i don't make DLL calls directly, but i would capture ... | 11,911,734 | 5 | 0 | null | 2012-08-11 03:30:16.713 UTC | 13 | 2021-01-20 10:43:20.75 UTC | 2012-08-11 04:11:45.743 UTC | null | 749,063 | null | 749,063 | null | 1 | 18 | c#|.net|console | 22,945 | <p>As it seems like you want to catch the Console output in realtime, I figured out that you might create your own <code>TextWriter</code> implementation that fires an event whenever a <code>Write</code> or <code>WriteLine</code> happens on the <code>Console</code>.</p>
<p>The writer looks like this:</p>
<pre><code> ... |
11,877,586 | How to merge two arrays of object in PHP | <p>I have the following two arrays of objects:</p>
<p><strong>First Array:</strong> <code>$array1</code></p>
<pre><code>Array
(
[0] => stdClass Object
(
[id] => 100
[name] => Muhammad
)
[1] => stdClass Object
(
[id] => 102
... | 11,879,498 | 3 | 3 | null | 2012-08-09 06:03:52.24 UTC | 6 | 2022-08-31 10:41:04.37 UTC | 2012-08-09 06:52:55.477 UTC | null | 462,732 | null | 462,732 | null | 1 | 22 | php|arrays|sorting | 43,284 | <p>These 3 simple steps did the work:</p>
<pre><code>//both arrays will be merged including duplicates
$result = array_merge( $array1, $array2 );
//duplicate objects will be removed
$result = array_map("unserialize", array_unique(array_map("serialize", $result)));
//array is sorted on the bases of id
sort( $result );
... |
12,043,875 | ArgumentNullException - how to simplify? | <p>I've noticed this code crops up a lot in my constructors:</p>
<pre><code>if (someParam == null) throw new ArgumentNullException("someParam");
if (someOtherParam == null) throw new ArgumentNullException("someOtherParam");
...
</code></pre>
<p>I have a few constructors where several things are injected and must all ... | 12,044,807 | 17 | 3 | null | 2012-08-20 19:28:52.35 UTC | 9 | 2022-04-28 16:14:21.38 UTC | 2012-08-20 21:05:52.61 UTC | null | 436,376 | null | 436,376 | null | 1 | 23 | c#|exception | 18,848 | <p>Upticks for most of you guys; your answers contributed to the solution I finally arrived at, which incorporated bits and pieces but ultimately is different from all of them.</p>
<p>I created a couple of static methods that work on lambda expressions of a specific form (<strong>EDIT</strong> - small change; the meth... |
11,873,959 | flask-sqlalchemy - PostgreSQL - Define specific schema for table? | <p>I want to define a specific schema for a 'model' using flask-sqlalchemy. When you create a table object in sqlalchemy itself it has a parameter to pass for schema name. </p>
<p>How do I do this in flask-sqlalchemy?</p> | 11,875,775 | 3 | 0 | null | 2012-08-08 22:11:35.543 UTC | 11 | 2020-08-03 00:44:53.61 UTC | 2013-09-05 17:46:22.02 UTC | null | 2,165,163 | null | 786,467 | null | 1 | 28 | python|flask|flask-sqlalchemy | 13,699 | <p>When you define your model class use:</p>
<pre><code>__table_args__ = {"schema":"schema_name"}
</code></pre>
<p>maybe it will save someone else some hunting.</p> |
11,590,792 | How can I find the parent tr of a td using jQuery? | <p>I have the following:</p>
<pre><code> tdToPad = tds.filter('[id^="input_Title_"]')
pad = 60;
tdToPad.css('margin-left', pad);
</code></pre>
<p>What I would like to do is to remove any class that starts with "X-" and give the row that is contained by "tdToPad" a class of "X-" + pad. </p>
<p>Something li... | 11,590,807 | 2 | 0 | null | 2012-07-21 08:48:30.477 UTC | 7 | 2014-01-16 15:03:14.503 UTC | null | null | null | null | 1,422,604 | null | 1 | 30 | jquery | 94,062 | <p>You can use <a href="http://api.jquery.com/closest/"><code>closest()</code></a> method:</p>
<blockquote>
<p>Get the first element that matches the selector, beginning at the current element and progressing up through the DOM tree.</p>
</blockquote>
<pre><code>tdToPad.closest('tr')
.addClass('X-' + pad)
</... |
11,685,305 | What is the syntax of the enhanced for loop in Java? | <p>I have been asked to use the enhanced <code>for</code> loop in my coding. </p>
<p>I have only been taught how to use traditional <code>for</code> loops, and as such don't know about the differences between it and the enhanced <code>for</code> loop. </p>
<p><strong>How does an enhanced <code>for</code> loop differ ... | 11,685,345 | 3 | 5 | null | 2012-07-27 09:46:02.913 UTC | 7 | 2021-01-02 00:01:56.84 UTC | 2019-07-02 23:25:21.717 UTC | null | 6,912,508 | user1920811 | null | null | 1 | 39 | java|foreach | 120,289 | <p>Enhanced for loop:</p>
<pre><code>for (String element : array) {
// rest of code handling current element
}
</code></pre>
<p>Traditional for loop equivalent:</p>
<pre><code>for (int i=0; i < array.length; i++) {
String element = array[i];
// rest of code handling current element
}
</code></pre>
<p>... |
11,773,369 | Convert from Long to date format | <p>I want to convert Long value to String or Date in this format dd/mm/YYYY.</p>
<p>I have this value in Long format: 1343805819061.</p>
<p>It is possible to convert it to Date format?</p> | 11,773,465 | 6 | 0 | null | 2012-08-02 08:04:44.363 UTC | 7 | 2020-11-06 10:49:44.677 UTC | 2018-04-06 08:12:48.147 UTC | null | 3,681,880 | null | 1,112,535 | null | 1 | 43 | android|date|long-integer | 82,573 | <p>You can use below line of code to do this. Here timeInMilliSecond is long value.</p>
<pre><code> String dateString = new SimpleDateFormat("MM/dd/yyyy").format(new Date(TimeinMilliSeccond));
</code></pre>
<p>Or you can use below code too also.</p>
<pre><code> String longV = "1343805819061";
long millisecond = Lon... |
3,505,674 | Comparing SIFT features stored in a mysql database | <p>I'm currently extending an image library used to categorize images and i want to find duplicate images, transformed images, and images that contain or are contained in other images.<br>
I have tested the SIFT implementation from OpenCV and it works very well but would be rather slow for multiple images. Too speed it... | 3,524,693 | 4 | 1 | null | 2010-08-17 18:27:08.397 UTC | 23 | 2011-12-20 19:23:14.99 UTC | null | null | null | null | 423,083 | null | 1 | 18 | c++|database|algorithm|computer-vision|sift | 6,585 | <p>So I basically did something very similar to this a few years ago. <strong>The algorithm you want to look into was proposed a few years ago by David Nister, the paper is: "Scalable Recognition with a Vocabulary Tree". They pretty much have an exact solution to your problem that can scale to millions of images.</st... |
3,992,353 | Javascript function to reload a page every X seconds? | <p>A couple of questions:</p>
<ul>
<li><p>I've never really used JS listeners other than <code>onclick</code> and <code>onkey</code> events, so I wondered if someone could help me with what I need in order to reload the page every X seconds?</p></li>
<li><p>Secondly, the page contains bare minimum, literally just one ... | 3,992,382 | 4 | 2 | null | 2010-10-21 22:01:32.37 UTC | 4 | 2014-12-23 05:09:04.633 UTC | 2012-05-09 12:12:14.363 UTC | null | 1,223,744 | null | 477,945 | null | 1 | 20 | javascript|html|syntax | 50,092 | <p>You don't need Javascript for this simple function. Add in the page header:</p>
<pre><code><meta http-equiv="Refresh" content="300">
</code></pre>
<p>300 is the number of seconds in this example.</p> |
3,302,177 | Android - Activity Constructor vs onCreate | <p>I understand that Android <code>Activities</code> have specific lifecycles and that <code>onCreate</code> should be overridden and used for initialization, but what exactly happens in the constructor? Are there any cases when you could/should override the <code>Activity</code> constructor as well, or should you neve... | 3,303,512 | 4 | 1 | null | 2010-07-21 17:44:30.253 UTC | 22 | 2013-07-19 21:46:55.717 UTC | null | null | 2,359,478 | user370382 | 2,359,478 | null | 1 | 93 | java|android|garbage-collection|android-activity|oncreate | 53,895 | <p>I can't think of any good reason to do anything in the constructor. You never construct an activity directly, so you can't use it to pass in parameters. Generally, just do things in onCreate.</p> |
3,436,118 | Is Java RegEx case-insensitive? | <p>In Java, when doing a replaceAll to look for a regex pattern like:</p>
<pre><code>replaceAll("\\?i\\b(\\w+)\\b(\\s+\\1)+\\b", "$1");
</code></pre>
<p>(to remove duplicate consecutive case-insensitive words, e.g. Test test), I'm not sure where I put the <code>?i</code>. I read that it is supposed to be at the beg... | 3,436,130 | 5 | 1 | null | 2010-08-08 21:21:09.36 UTC | 19 | 2019-05-19 22:31:48.573 UTC | 2019-05-19 22:31:48.573 UTC | null | 4,928,642 | null | 207,524 | null | 1 | 134 | java|regex|case-sensitive | 175,793 | <p><a href="http://www.regexbuddy.com/" rel="noreferrer">RegexBuddy</a> is telling me if you want to include it at the beginning, this is the correct syntax:</p>
<pre><code>"(?i)\\b(\\w+)\\b(\\s+\\1)+\\b"
</code></pre> |
3,795,923 | Bottom button bar in android | <p>I am wondering how it's possible to create bottom bar buttons in android, </p>
<p>I read something about this U.I. solution, are there any controls that can be used?</p> | 3,795,949 | 6 | 0 | null | 2010-09-25 23:11:31.59 UTC | 7 | 2021-01-30 18:03:10.793 UTC | 2018-03-22 22:32:02.36 UTC | null | 5,108,735 | null | 371,301 | null | 1 | 21 | android | 55,562 | <p>You can do something like this inside a relative layout</p>
<pre><code><LinearLayout
android:id="@+id/footer"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_alignParentBottom=&qu... |
3,234,977 | Using jQuery how to get click coordinates on the target element | <p>I have the following event handler for my html element</p>
<pre><code>jQuery("#seek-bar").click(function(e){
var x = e.pageX - e.target.offsetLeft;
alert(x);
});
</code></pre>
<p>I need to find the position of the mouse on the #seek-bar at the time of clicking. I would have thought the above code shoul... | 3,236,129 | 6 | 4 | null | 2010-07-13 07:26:04.317 UTC | 40 | 2018-02-15 11:06:00.61 UTC | 2010-07-13 07:32:20.027 UTC | null | 294,089 | null | 294,089 | null | 1 | 117 | javascript|jquery|html|css|jquery-ui | 244,043 | <p>Are you trying to get the position of mouse pointer <code>relative</code> to element ( or ) simply the mouse pointer location<br /><br />
Try this Demo : <a href="http://jsfiddle.net/AMsK9/" rel="noreferrer"><strong>http://jsfiddle.net/AMsK9/</strong></a></p>
<hr>
<h2>Edit :</h2>
<p>1) <code>event.pageX</code>, ... |
3,590,489 | Visual Studio 2010 Intellisense slows down everything | <p>I have the issue with Visual Studio 2010, after a while, running exceptionally slowly and slowing everything else down with it. I'm meaning:</p>
<ul>
<li>Most other open windows become unresponsive</li>
<li>Typing is delayed</li>
<li>Build times increase 10-fold</li>
<li>Saving takes forever</li>
</ul>
<p>I am sur... | 3,852,810 | 8 | 6 | null | 2010-08-28 11:00:40.83 UTC | 9 | 2021-02-13 13:17:46.517 UTC | null | null | null | null | 407,879 | null | 1 | 13 | visual-studio|visual-studio-2010|intellisense|performance|lag | 19,686 | <p>I had the same problem with my Windows XP machine. After a long search I found a solution so I'll post it back here since it was the first result I got on google.</p>
<p>Install Windows Automation API update for Windows XP (KB971513).</p>
<p><a href="https://www.catalog.update.microsoft.com/Search.aspx?q=KB971513" r... |
3,228,984 | A better way to validate URL in C# than try-catch? | <p>I'm building an application to retrieve an image from internet. Even though it works fine, it is slow (on wrong given URL) when using try-catch statements in the application. </p>
<p>(1) Is this the best way to verify URL and handle wrong input - or should I use Regex (or some other method) instead?</p>
<p>(2) Why... | 3,228,997 | 10 | 2 | null | 2010-07-12 13:29:36.383 UTC | 9 | 2019-11-13 19:35:59.557 UTC | 2017-08-19 13:35:51.217 UTC | null | 1,033,581 | null | 286,244 | null | 1 | 64 | c#|image|url|try-catch | 54,620 | <p>Use <a href="http://msdn.microsoft.com/en-us/library/system.uri.trycreate.aspx" rel="noreferrer">Uri.TryCreate</a> to create a new Uri object only if your url string is a valid URL. If the string is not a valid URL, TryCreate returns false. </p>
<pre><code>string myString = "http://someUrl";
Uri myUri;
if (Uri.TryC... |
3,835,028 | Getting list of Facebook friends with latest API | <p>I'm using <a href="http://github.com/facebook/php-sdk/" rel="noreferrer">the most recent version of the Facebook SDK</a> (which lets to connect to something called the 'graph API' though I'm not sure). I've adapted Facebook's example code to let me connect to Facebook and that works... but I can't get a list of my f... | 3,835,568 | 11 | 0 | null | 2010-09-30 21:38:36.157 UTC | 17 | 2021-06-26 17:21:29.98 UTC | 2014-04-12 09:57:24.12 UTC | null | 1,045,444 | null | 284,698 | null | 1 | 25 | php|facebook|facebook-php-sdk|facebook-apps|facebook-friends | 112,233 | <p>I think this is what you want:</p>
<pre><code>$friends = $facebook->api('/me/friends');
</code></pre> |
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