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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43,790,137 | Why can't type parameter in Kotlin have any other bounds if it's bounded by another type parameter? | <p>Here is the minimal demo code that shows this problem:</p>
<pre><code>interface A
fun <T1, T2> test() where T2 : T1, T2 : A {}
</code></pre>
<p>When I try to compile it, compiler will complain:</p>
<blockquote>
<p>Error:(81, 25) Kotlin: Type parameter cannot have any other bounds if it's bounded by another ty... | 43,807,444 | 2 | 0 | null | 2017-05-04 18:19:31.26 UTC | 7 | 2022-06-20 07:26:53.713 UTC | 2020-06-20 09:12:55.06 UTC | null | -1 | null | 7,964,561 | null | 1 | 35 | types|kotlin | 2,468 | <p>This restrictions was made because java(language) has it:</p>
<pre><code> interface A {}
// Error:(7, 26) java: a type variable may not be followed by other bounds
<T1, T2 extends T1 & A> void test() {}
</code></pre>
<p>And we suppose that this forbidden also in bytecode level.
I dig into it and se... |
204,140 | Moving items in Dual Listboxes | <p>How can I move items from one list box control to another listbox control using JavaScript in ASP.NET?</p> | 204,429 | 3 | 2 | null | 2008-10-15 09:20:18.74 UTC | 9 | 2009-11-18 20:53:23.803 UTC | 2009-07-28 02:03:12.18 UTC | keparo | 16,587 | balaweblog | 22,162 | null | 1 | 18 | asp.net|javascript|listbox|listbox-control | 19,252 | <p>This code assumes that you have an anchor or that will trigger to movement when it is clicked:</p>
<pre><code>document.getElementById('moveTrigger').onclick = function() {
var listTwo = document.getElementById('secondList');
var options = document.getElementById('firstList').getElementsByTagName('option');... |
550,703 | C#: Difference between ' += anEvent' and ' += new EventHandler(anEvent)' | <p>Take the below code:</p>
<pre><code>private void anEvent(object sender, EventArgs e) {
//some code
}
</code></pre>
<hr>
<p>What is the difference between the following ?</p>
<pre><code>[object].[event] += anEvent;
//and
[object].[event] += new EventHandler(anEvent);
</code></pre>
<p><strong>[UPDATE]</stro... | 550,708 | 3 | 4 | null | 2009-02-15 10:55:46.573 UTC | 16 | 2015-07-03 13:28:32.283 UTC | 2013-12-14 22:24:40.707 UTC | Dreas Grech | 1,243,762 | Dreas Grech | 44,084 | null | 1 | 78 | c#|delegates|event-handling | 11,986 | <p>There is no difference. In your first example, the compiler will automatically infer the delegate you would like to instantiate. In the second example, you explicitly define the delegate. </p>
<p>Delegate inference was added in C# 2.0. So for C# 1.0 projects, second example was your only option. For 2.0 projects, t... |
652,186 | Why do Objective-C files use the .m extension? | <p>Since I started learning Objective-C and Cocoa, I've been wondering why they have chosen the extension .m for the implementation files - was it supposed to mean something, or was it just a random letter?</p> | 652,266 | 3 | 3 | null | 2009-03-16 21:17:51.89 UTC | 42 | 2019-06-26 12:48:41.657 UTC | 2019-06-26 12:48:41.657 UTC | epatel | 1,033,581 | Psionides | 78,255 | null | 1 | 231 | objective-c|file-extension | 78,045 | <p>Today most people would refer to them as "method files", but</p>
<blockquote>
<p>"The .m extension originally stood for
"<strong>m</strong>essages" when Objective-C was first
introduced, referring to a central
feature of Objective-C [...]"</p>
</blockquote>
<p>(from the book "<a href="https://rads.stackove... |
28,856,326 | Crontab - simple echo not running | <p>I've got such situation:
I want to schedule a job with crontab on a linux server. I'm not super-user, so I'm editing (with crontab -l, editor vim) only my crontab file. For testing, I put there:</p>
<pre><code>* * * * * echo asdf
</code></pre>
<p>And the job is not running. Is the restart of the server needed? Or ... | 28,856,563 | 3 | 1 | null | 2015-03-04 13:57:42.463 UTC | 4 | 2022-02-09 13:51:06.977 UTC | 2015-03-04 17:09:24.69 UTC | null | 827,263 | null | 3,117,006 | null | 1 | 33 | linux|cron|scheduling | 56,166 | <p>May be it is, cron jobs will run in their own shell. So you can't expect to see <code>asdf</code> on your console.</p>
<p>What you should try is </p>
<pre><code>* * * * * echo asdf > somefile_in_your_home_directory_with_complete_path.log
</code></pre>
<p>Next check the file by doing a tail:</p>
<pre><code>tai... |
20,883,868 | WPF Caliburn.Micro and TabControl with UserControls issue | <p>I'm pretty sure this has been answered somewhere, but I can't seem to find it for the life of me.</p>
<p>I'm trying to use a TabControl to switch between UserControls (each tab is different, so not using Items)</p>
<p>Here's the breakdown:
I have my mainview, and 3 usercontrols. Mainview has a tab control - each ... | 20,885,027 | 2 | 0 | null | 2014-01-02 13:16:39.077 UTC | 13 | 2021-10-27 17:50:57.653 UTC | null | null | null | null | 773,165 | null | 1 | 14 | c#|wpf|mvvm|tabcontrol|caliburn.micro | 9,421 | <p>May I suggest a tad different route?</p>
<p>It's something that I have been successfully doing in master-details scenarios. Let's say you have a collection of child view models. I'll prepare a marker interface for all those items, of course you can add properties/methods you see fit if there are such methods that sp... |
56,130,792 | Will consteval functions allow template parameters dependent on function arguments? | <p>In C++17, this code is illegal:</p>
<pre><code>constexpr int foo(int i) {
return std::integral_constant<int, i>::value;
}
</code></pre>
<p>That's because even if <code>foo</code> can be evaluated at compile-time, the compiler still needs to produce the instructions to execute it at runtime, thus making t... | 56,131,418 | 3 | 3 | null | 2019-05-14 12:43:05.583 UTC | 11 | 2019-06-03 14:55:45.743 UTC | 2019-05-14 16:40:35.427 UTC | null | 963,864 | null | 9,987,834 | null | 1 | 87 | c++|language-lawyer|constexpr|c++20|class-template | 4,107 | <p>No. </p>
<p>Whatever changes the paper will entail, which is little <a href="http://wg21.link/p1073" rel="noreferrer">at this point</a>, it cannot change the fact that a non-template function definition is only typed once. Moreover, if your proposed code would be legal, we could presumably find a way to declare a v... |
19,855,426 | Can Visual Studio 2013 generate CSS files from .less files? | <p>Visual Studio 2013 is awesome, now with syntax highlight and autocomplete for <code>.less</code> files. But does it also generate the respective CSS files? Do I need to install other extensions for that?</p> | 19,855,623 | 6 | 0 | null | 2013-11-08 09:21:04.563 UTC | 6 | 2021-07-26 20:34:28.06 UTC | 2013-11-08 09:48:41.193 UTC | null | 158,246 | null | 158,246 | null | 1 | 64 | css|less|visual-studio-2013 | 40,067 | <p>Yes. While Visual Studio 2013 doesn't come with a LESS compiler built-in (so you'll need to bring your own), you can either use an external compiler, or install an extension so you can compile your LESS files from within the IDE.</p> |
5,719,538 | Realtime Audio/Video Streaming FROM iPhone to another device (Browser, or iPhone) | <p>I'd like to get real-time video from the iPhone to another device (either desktop browser or another iPhone, e.g. point-to-point). </p>
<p>NOTE: It's not one-to-many, just one-to-one at the moment. Audio can be part of stream or via telephone call on iphone. </p>
<p>There are four ways I can think of...</p>
<ol>
... | 5,723,955 | 3 | 1 | null | 2011-04-19 16:23:23.97 UTC | 17 | 2017-03-03 13:38:46.053 UTC | 2017-05-23 12:00:10.983 UTC | null | -1 | null | 79,856 | null | 1 | 16 | iphone|video-streaming|audio-streaming|http-live-streaming | 11,367 | <p>Sending raw frames or individual images will never work well enough for you (because of the amount of data and number of frames). Nor can you reasonably serve anything from the phone (WWAN networks have all sorts of firewalls). You'll need to encode the video, and stream it to a server, most likely over a standard s... |
6,165,449 | c++ error: invalid types 'int[int]' for array subscript | <p>Trying to learn C++ and working through a simple exercise on arrays. </p>
<p>Basically, I've created a multidimensional array and I want to create a function that prints out the values.</p>
<p>The commented for-loop within Main() works fine, but when I try to turn that for-loop into a function, it doesn't work and... | 6,165,546 | 4 | 1 | null | 2011-05-29 01:38:46.46 UTC | null | 2020-02-23 17:15:34.243 UTC | 2017-09-18 09:28:46.543 UTC | null | 2,350,638 | null | 774,799 | null | 1 | 8 | c++ | 74,139 | <p>C++ inherits its syntax from C, and tries hard to maintain backward compatibility where the syntax matches. So passing arrays works just like C: the length information is lost.</p>
<p>However, C++ does provide a way to automatically pass the length information, using a reference (no backward compatibility concerns... |
5,830,549 | MVC: Iterating a Viewbag array in javascript | <p>The goal is to get the data from the <code>ViewBag.Array</code> to a Javascript array. The data is calculated in the controller so I cannot fetch it straight from the database. I need the data to draw a chart with jqplot. Code:</p>
<pre><code>for(i = 0; i < @ViewBag.Array.Length; i++)
{
jScriptArray[i] = @Vi... | 5,830,594 | 4 | 0 | null | 2011-04-29 09:50:03.733 UTC | 7 | 2020-01-27 14:00:53.15 UTC | 2013-11-01 09:04:09.15 UTC | null | 779,549 | null | 730,805 | null | 1 | 17 | javascript|asp.net-mvc|arrays|razor|viewbag | 40,106 | <p>You may try the following:</p>
<pre><code>var array = @Html.Raw(Json.Encode(@ViewBag.Array));
for(var i = 0; i < array.length; i++) {
jScriptArray[i] = array[i];
}
</code></pre> |
5,914,040 | onBackPressed to hide Not destroy activity | <p>i know how to cancel back keypress, so that the activity / main window stays visible:</p>
<pre><code>public void onBackPressed() {
return;
}
</code></pre>
<p>my aim is to hide the activity, however, without finishing it, how do you do that in the onBackPressed event? </p>
<p>i.e. I would like to ... | 5,914,566 | 4 | 0 | null | 2011-05-06 16:06:38.477 UTC | 5 | 2016-02-24 10:11:09.477 UTC | null | null | null | null | 742,084 | null | 1 | 28 | android | 34,243 | <p>If you want to mimic the "Home" button on specific Activities just do this:</p>
<p><strong>Below API 5</strong>:</p>
<pre><code>@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
moveTaskToBack(true);
return true;
}
return super.onK... |
34,531,748 | How to get the smallest in lexicographical order? | <p>I am doing a leetcode exercise</p>
<p><a href="https://leetcode.com/problems/remove-duplicate-letters/" rel="noreferrer">https://leetcode.com/problems/remove-duplicate-letters/</a></p>
<p>The question is:</p>
<pre><code># Given a string which contains only lowercase letters, remove duplicate
# letters so that eve... | 34,531,894 | 6 | 1 | null | 2015-12-30 14:50:21.29 UTC | 9 | 2016-05-29 12:20:41.187 UTC | 2015-12-30 23:38:28.597 UTC | null | 5,119,700 | null | 5,119,700 | null | 1 | 36 | algorithm | 67,273 | <p>The smallest lexicographical order is an order relation where string <em>s</em> is smaller than <em>t</em>, given the first character of <em>s</em> (<em>s<sub>1</sub></em>) is smaller than the first character of <em>t</em> (<em>t<sub>1</sub></em>), or in case they are equivalent, the second character, etc.</p>
<p>S... |
29,790,070 | Upgraded to AppCompat v22.1.0 and now getting IllegalArgumentException: AppCompat does not support the current theme features | <p>I've just upgraded my app to use the newly released v22.1.0 AppCompat and I'm now getting the following exception when I open my app.</p>
<pre><code>Caused by: java.lang.IllegalArgumentException: AppCompat does not support the current theme features
at android.support.v7.app.AppCompatDelegateImplV7.ensureSu... | 29,790,071 | 4 | 0 | null | 2015-04-22 07:01:41.917 UTC | 94 | 2020-08-10 12:37:13.253 UTC | 2020-08-10 12:37:13.253 UTC | null | 8,035,260 | null | 474,997 | null | 1 | 340 | android|android-appcompat|illegalargumentexception | 66,491 | <p>AppCompat is now more strict on what it expect in theme window flags, more closely matching what you would get from the framework.</p>
<p>The main reason behind this is to support <a href="https://developer.android.com/reference/android/support/v7/app/AppCompatDialog.html">AppCompatDialogs</a> which we were also ad... |
32,364,579 | Upstream / downstream terminology used backwards? (E.g. nginx) | <p>I've always thought of upstream and downstream along the lines of an actual stream, where the flow of information is like water. So upstream is where water/data comes from (e.g. an HTTP request) and downstream is where it goes (e.g. the underlying system that services the request).</p>
<p>I've been looking at API g... | 32,365,658 | 2 | 1 | null | 2015-09-02 23:06:21.82 UTC | 41 | 2022-07-13 01:28:20.813 UTC | null | null | null | null | 705,288 | null | 1 | 123 | nginx|definition | 29,860 | <p>In HTTP world, the "upstream server" term was introduced in the HTTP/1.0 specification, <a href="https://www.rfc-editor.org/rfc/rfc1945#section-9.5" rel="noreferrer">RFC 1945</a>:</p>
<blockquote>
<p>502 Bad Gateway</p>
<p>The server, while acting as a gateway or proxy, received an invalid
response from <s... |
32,296,209 | Dependency Injection Unity - Conditional Resolving | <p>Conditional resolving is the last thing I don't understand at the moment.</p>
<p>Lets say we have an interface <code>IAuthenticate</code>:</p>
<pre><code>public interface IAuthenticate{
bool Login(string user, string pass);
}
</code></pre>
<p>Now I have two types of authentication.</p>
<p><strong>Twitter aut... | 32,415,954 | 2 | 2 | null | 2015-08-30 11:45:41.757 UTC | 17 | 2020-11-25 10:30:59.653 UTC | 2018-01-30 21:30:26.257 UTC | null | 181,087 | null | 1,395,676 | null | 1 | 20 | c#|dependency-injection|inversion-of-control|unity-container | 13,058 | <p>A simple way to solve this is with the <a href="https://sourcemaking.com/design_patterns/strategy" rel="nofollow noreferrer">strategy pattern</a>. Note that you can add or remove login providers without changing the design - you simply need to change the DI configuration.</p>
<h1>Interfaces</h1>
<pre><code>public in... |
5,978,519 | How can I use setInterval and clearInterval? | <p>Consider:</p>
<pre><code>function doKeyDown(event) {
switch (event.keyCode) {
case 32:
/* Space bar was pressed */
if (x == 4) {
setInterval(drawAll, 20);
}
else {
setInterval(drawAll, 20);
x += dx;
}
break;
}
}
</code></... | 5,978,560 | 5 | 0 | null | 2011-05-12 13:14:10.887 UTC | 38 | 2022-08-12 21:59:43.96 UTC | 2022-08-12 21:52:26.457 UTC | null | 63,550 | null | 715,573 | null | 1 | 177 | javascript|jquery | 304,899 | <p><code>setInterval</code> sets up a <em>recurring</em> timer. It returns a handle that you can pass into <code>clearInterval</code> to stop it from firing:</p>
<pre><code>var handle = setInterval(drawAll, 20);
// When you want to cancel it:
clearInterval(handle);
handle = 0; // I just do this so I know I've cleared ... |
6,081,307 | How to connect NetBeans to MySQL database? | <p>I have just installed NetBeans 7.0 and I am a newbie in NetBeans' world. can any one tell me how to connect my application to MySQl / Postgres ? I work on Windows XP.</p> | 6,081,579 | 6 | 1 | null | 2011-05-21 11:10:41.077 UTC | 3 | 2016-08-20 12:00:03.317 UTC | 2015-07-20 04:36:04.16 UTC | null | 720,176 | null | 720,176 | null | 1 | 6 | java|mysql|postgresql|netbeans|jdbc | 102,420 | <p>In the <strong>Services</strong> window you can right click on the <strong>Databases</strong> tab and select <strong>New Connection</strong>.
<img src="https://i.stack.imgur.com/6EJsq.png" alt="New Connection"></p>
<p>Select <strong>MySQL(Connector/J Driver)</strong> from the drop down list. The driver file should ... |
5,901,153 | Compress large Integers into smallest possible string | <p>I have a bunch of 10 digit integers that I'm passing in a URL. Something like:
"4294965286", "2292964213". They will always be positive and always be 10 digits. </p>
<p>I'd like to compress those integers into the smallest possible form that can still be used in in a URL (aka letters and numbers are perfectly fine... | 5,901,201 | 6 | 1 | null | 2011-05-05 16:31:41.187 UTC | 8 | 2020-06-24 17:16:22.257 UTC | null | null | null | null | 44,336 | null | 1 | 30 | c#|asp.net|vb.net|compression | 24,747 | <p>Yes. GZIP is a <em>compression</em> algorithm which both requires compressible data and has an overhead (framing and dictionaries, etc). An <em>encoding</em> algorithm should be used instead.</p>
<p><strong>The "simple" method is to use <a href="http://en.wikipedia.org/wiki/Base64" rel="noreferrer">base-64 encoding... |
5,908,581 | Is hash_map part of the STL? | <p>Quick question...Is hash_map part of the STL?</p> | 5,908,859 | 6 | 3 | null | 2011-05-06 08:10:45.84 UTC | 18 | 2019-03-11 23:41:00.003 UTC | 2011-05-06 08:15:43.613 UTC | null | 27,615 | null | 501,600 | null | 1 | 62 | c++|stl|hashmap | 95,967 | <p><a href="http://www.sgi.com/tech/stl/" rel="noreferrer">The STL</a> has <a href="http://en.wikipedia.org/wiki/Hash_map_%28C++%29" rel="noreferrer"><code>hash_map</code></a>, but the C++ Standard Library <a href="http://jcatki.no-ip.org/fncpp/Resources" rel="noreferrer">does not</a>.</p>
<p>Due to <a href="https://s... |
5,857,386 | How to avoid SQL injection in CodeIgniter? | <p>Is there any method to set in config file to avoid SQL injection? I am using this code for selecting values:</p>
<pre><code>$this->db->query("SELECT * FROM tablename WHERE var='$val1'");
</code></pre>
<p>And this for inserting values:</p>
<pre><code>$this->db->query("INSERT INTO tablename... | 5,857,481 | 7 | 2 | null | 2011-05-02 12:55:26.367 UTC | 25 | 2022-09-14 23:22:52.243 UTC | 2022-09-14 23:22:52.243 UTC | null | 1,839,439 | null | 667,030 | null | 1 | 42 | function|codeigniter|sql-injection|built-in|data-security | 57,283 | <p>CodeIgniter's <a href="https://www.codeigniter.com/userguide2/database/active_record.html" rel="noreferrer">Active Record</a> methods automatically escape queries for you, to prevent sql injection.</p>
<pre><code>$this->db->select('*')->from('tablename')->where('var', $val1);
$this->db->get();
</c... |
6,137,224 | Immutable Object with ArrayList member variable - why can this variable be changed? | <p>I have got one class with various member variables. There is a constructor and there are getter-methods, but no setter-methods. In fact, this object should be immutable.</p>
<pre><code>public class Example {
private ArrayList<String> list;
}
</code></pre>
<p>Now I noticed the following: when I get the va... | 6,137,270 | 10 | 0 | null | 2011-05-26 10:39:30.87 UTC | 16 | 2021-11-16 19:31:48.677 UTC | 2015-05-11 11:46:56.373 UTC | null | 4,554,061 | null | 669,356 | null | 1 | 23 | java|object|immutability|member|getter-setter | 43,796 | <p>Just because <em>the reference</em> to the list is immutable doesn't mean that the list <em>it refers</em> to is immutable.</p>
<p>Even if <code>list</code> was made <code>final</code> this would be allowed</p>
<pre><code>// changing the object which list refers to
example.getList().add("stuff");
</code></pre>
<p... |
5,741,101 | Easy way to print Perl array? (with a little formatting) | <p>Is there an <strong>easy</strong> way to print out a Perl array with commas in between each element?</p>
<p>Writing a for loop to do it is pretty easy but not quite elegant....if that makes sense.</p> | 5,741,144 | 11 | 0 | null | 2011-04-21 07:48:32.977 UTC | 16 | 2017-10-28 07:58:51.98 UTC | 2017-02-05 20:21:38.62 UTC | null | 6,862,601 | null | 455,612 | null | 1 | 103 | perl | 273,784 | <p>Just use <a href="http://perldoc.perl.org/functions/join.html" rel="noreferrer"><code>join()</code></a>:</p>
<pre><code># assuming @array is your array:
print join(", ", @array);
</code></pre> |
5,784,652 | Eclipse "Invalid Project Description" when creating new project from existing source | <p>I am trying to create a new project from existing source code. I keep getting the following error: "Invalid Project Description", project path "overlaps the location of another project" with the same name. The reason is that I created that project from the source code before, but then I deleted that project and dele... | 5,784,712 | 22 | 10 | null | 2011-04-26 00:17:56.077 UTC | 44 | 2021-03-04 06:45:58.403 UTC | 2017-05-23 11:54:44.17 UTC | null | -1 | null | 724,195 | null | 1 | 252 | android|eclipse | 186,921 | <p>Go into your workspace, and move your project source code folder to another area outside of your workspace (like the desktop). Make sure the project is deleted in eclipse, then create a new project from source from that directory.</p>
<p>Another thing you could do is try creating a project of a different name (fro... |
39,032,333 | Get a value inside a Promise Typescript | <p>One of function inside a typescript class returns a <code>Promise<string></code>. How do I unwrap/yield the value inside that promise.</p>
<pre><code>functionA(): Promise<string> {
// api call returns Promise<string>
}
functionB(): string {
return this.functionA() // how to unwrap the value... | 39,034,776 | 2 | 2 | null | 2016-08-19 06:22:09.053 UTC | 1 | 2020-05-10 01:02:36.133 UTC | null | null | null | null | 3,513,857 | null | 1 | 25 | javascript|typescript|promise|es6-promise | 59,240 | <blockquote>
<p>How do I unwrap/yield the value inside that promise</p>
</blockquote>
<p>You can do it with <code>async</code>/<code>await</code>.Don't be fooled into thinking that you just went from async to sync, async await it is just a wrapper around <code>.then</code>. </p>
<pre><code>functionA(): Promise<s... |
44,714 | How to have two remote origins for Git? | <p>Our git server will be local, but we want an server where our local repo is also kept online but only used in a <code>push</code> to fashion.</p>
<p>How can one do that?</p> | 44,738 | 1 | 0 | null | 2008-09-04 20:36:15.597 UTC | 9 | 2021-10-09 14:16:37.387 UTC | 2021-10-09 14:16:37.387 UTC | Ravi Chhabra | 285,795 | Ravi Chhabra | 370,899 | null | 1 | 19 | git | 7,044 | <p>You can add remotes with <code>git remote add <name> <url></code></p>
<p>You can then push to a remote with <code>git push <name> master:master</code> to push your local master branch to the remote master branch.</p>
<p>When you create a repo with <code>git clone</code> the remote is named <code... |
41,567,196 | Ansible: How to add variables to "command" or "shell" | <p>Is it possible to use variables on <code>command</code> or <code>shell</code> modules?
I have the following code, and I would like to use variable file to provide some configurations:</p>
<p>I would like to read the Hadoop version from my variables file. On other modules of ansible I could use <code>{{ansible_versi... | 41,567,971 | 3 | 0 | null | 2017-01-10 10:59:36.597 UTC | null | 2020-02-13 09:09:45.367 UTC | 2019-07-23 17:28:10.49 UTC | null | 1,245,190 | null | 5,621,509 | null | 1 | 16 | ansible|ansible-2.x | 47,702 | <p>Quote the full string in the <code>command</code> argument:</p>
<pre><code>- name: Iniciar zkfc
command: "{{ hadoop_version }}/sbin/hadoop-daemon.sh start zkfc"
</code></pre> |
47,239,332 | Take the sum of every N rows in a pandas series | <p>Suppose </p>
<p><code>s = pd.Series(range(50))</code></p>
<pre><code>0 0
1 1
2 2
3 3
...
48 48
49 49
</code></pre>
<p>How can I get the new series that consists of sum of every n rows?</p>
<p>Expected result is like below, when n = 5;</p>
<pre><code>0 10
1 35
2 60
3 ... | 47,239,367 | 2 | 0 | null | 2017-11-11 15:05:07.933 UTC | 4 | 2021-02-04 15:53:09.94 UTC | 2018-12-05 09:31:29.24 UTC | null | 4,909,087 | null | 869,074 | null | 1 | 32 | python|pandas | 28,687 | <h3><code>GroupBy.sum</code></h3>
<pre><code>N = 5
s.groupby(s.index // N).sum()
0 10
1 35
2 60
3 85
4 110
5 135
6 160
7 185
8 210
9 235
dtype: int64
</code></pre>
<p>Chunk the index into groups of 5 and group accordingly.</p>
<hr />
<h3><code>numpy.reshape</code> + <code>sum</co... |
30,081,491 | Google Sheets ArrayFormula with Sumifs | <p>Usually don't need help with sheets but I think my brain is imploding from thinking on this too much.</p>
<p>Trying to fill an entire column with an array formula that sums values from a separate column based on conditions from two other columns. If that sounds strange just check out <a href="https://docs.google.com... | 30,105,877 | 3 | 0 | null | 2015-05-06 15:42:04.927 UTC | 3 | 2022-05-14 12:27:07.29 UTC | 2020-12-03 12:15:31.553 UTC | null | 12,188,861 | null | 3,689,610 | null | 1 | 16 | google-sheets|sumifs|array-formulas | 39,342 | <p>The solution that I ended up using was this:</p>
<p>Credit due to 2n9 from google forums. Here is the <a href="https://productforums.google.com/forum/?utm_medium=email&utm_source=footer#!msg/docs/OrriYjusT6k/2XSeq1FhH3oJ" rel="noreferrer">link</a></p>
<p><code>=arrayformula(sumif(B3:B8&C3:C8,F3:F8&"A",... |
9,445,489 | performing HTTP requests with cURL (using PROXY) | <p>I have this proxy address: <code>125.119.175.48:8909</code></p>
<p>How can I perform a HTTP request using cURL like <code>curl http://www.example.com</code>, but specifying the proxy address of my network? </p> | 9,447,493 | 17 | 0 | null | 2012-02-25 15:47:56.51 UTC | 147 | 2022-06-23 21:51:30.283 UTC | 2017-08-22 20:27:13.393 UTC | null | 5,780,109 | null | 873,286 | null | 1 | 559 | linux|curl|proxy | 1,256,420 | <p>General way:</p>
<pre><code>export http_proxy=http://your.proxy.server:port/
</code></pre>
<p>Then you can connect through proxy from (many) application.</p>
<p>And, as per comment below, for https:</p>
<pre><code>export https_proxy=https://your.proxy.server:port/
</code></pre> |
31,109,514 | Making GCM work for iOS device in the background | <p>I'm trying to use GCM for IOS and Android clients. It seems to work fine with IOS when app is in the foreground, however, when the app is in the background, the notification center doesn't receive the message and <code>didReceiveRemoteNotification with completionHandler</code> doesn't get called.</p>
<p>I identifie... | 31,176,165 | 5 | 1 | null | 2015-06-29 06:56:27.937 UTC | 18 | 2016-11-25 14:17:04.83 UTC | 2016-11-25 14:17:04.83 UTC | null | 1,678,420 | null | 4,665,643 | null | 1 | 26 | ios|push-notification|apple-push-notifications|google-cloud-messaging | 27,014 | <p>For every poor soul wondering in quest for an answer to GCM background mystery. I solved it and the problem was in the format. I'm posting the right format as well as Java code needed to send Http request to GCM with some message.
So the Http request should have two field in the header, namely:</p>
<pre><code>Autho... |
47,302,607 | Meaning of H/5 in cron Jenkins | <p>I have a job with as cron:</p>
<pre><code>5 3,21 * * 1-5
</code></pre>
<p>This will run my job at 03:05AM and 09:05PM. Now I read it's a best practice to use <code>H</code>.</p>
<p>I try:</p>
<pre><code>H/5 3,21 * * 1-5
</code></pre>
<p>What is the meaning now? Will this schedule a build in a range of 5 minutes... | 47,302,727 | 1 | 1 | null | 2017-11-15 08:28:22.683 UTC | 3 | 2022-04-15 14:29:19.09 UTC | null | null | null | null | 6,077,803 | null | 1 | 31 | jenkins|cron | 64,766 | <p>The <code>H</code> will take a numeric hash of the Job name and use this to ensure that different jobs with the same cron settings do not all trigger at the same time. This is a form of <a href="https://stackoverflow.com/questions/1336454/what-is-scheduling-jitter">Scheduling Jitter</a></p>
<p><code>H/5</code> in th... |
10,539,836 | Access: Using query in VBA for recordset | <p>I have been accustomed to do recordssets in the following format:</p>
<pre><code>Dim rs As DAO.Recordset
Dim strSQL As String
strSQL = "Select field1, field2 from myTable where field1 > 30"
Set rs = CurrentDb.OpenRecordset(strSQL)
'... Do wahtever using rs.
</code></pre>
<p>Is it possible to use an already c... | 10,539,987 | 1 | 1 | null | 2012-05-10 18:09:35.107 UTC | 7 | 2012-05-10 19:07:44.58 UTC | 2012-05-10 18:31:36.827 UTC | null | 317,589 | null | 317,589 | null | 1 | 6 | ms-access|vba | 80,444 | <p>You can either</p>
<ul>
<li><p>Use a query that has parameters and specify values for parameters provided that the query uses parameters.</p>
<pre><code>Dim dbs As DAO.Database
Dim qdf As DAO.QueryDef
Dim prm As DAO.Parameter
Dim rst As DAO.Recordset
Set qdf = CurrentDb.QueryDefs("qry_SomeQueryWithParameters")
q... |
10,776,539 | Comparing dates in MySQL ignoring time portion of a DateTime field | <p>I need to compare dates in MySQL ignoring the time portion in a <code>DateTime</code> column. I have tried the following SQL.</p>
<pre><code>SELECT * FROM order_table where order_date=date_format('2012-05-03', '%Y-%m-%d');
</code></pre>
<p>It doesn't retrieve any row even though there is a date <code>2012-05-03 10... | 10,776,557 | 8 | 1 | null | 2012-05-27 19:10:22.787 UTC | 9 | 2018-02-21 16:54:30.907 UTC | 2013-11-27 21:40:00.01 UTC | null | 1,391,249 | null | 1,391,249 | null | 1 | 50 | mysql|date|datetime|date-comparison | 60,575 | <p>You could use the <a href="http://dev.mysql.com/doc/refman/5.6/en/date-and-time-functions.html#function_date" rel="noreferrer"><code>DATE</code></a> function:</p>
<pre><code>SELECT col1, col2, ..., coln
FROM order_table
WHERE date(order_date) = '2012-05-03'
</code></pre>
<p>But this is more efficient, if your tabl... |
7,446,301 | Autowire reference beans into list by type | <p>I have one class that has a list of objects of <code>Daemon</code> type.</p>
<pre><code>class Xyz {
List<Daemon> daemons;
}
</code></pre>
<p>My spring configuration looks like this.</p>
<pre><code><bean id="xyz" class="package1.Xyz">
<property name="daemons" ref="daemonsList">
</be... | 7,446,351 | 2 | 2 | null | 2011-09-16 14:36:06.187 UTC | 13 | 2019-07-18 16:36:26.607 UTC | 2017-06-19 07:07:55.647 UTC | null | 5,091,346 | null | 372,887 | null | 1 | 85 | java|spring | 77,535 | <p>It should work like this (remove the ArrayList bean from your XML):</p>
<pre><code>public Class Xyz {
private List<Daemon> daemons;
@Autowired
public void setDaemons(List<Daemon> daemons){
this.daemons = daemons;
}
}
</code></pre>
<p>I don't think there's a way to do this... |
18,998,671 | Set Height and Width of Stage and Scene in javafx | <ul>
<li>I develop one javafx application.</li>
<li>In my application there are two scenes and one stage.</li>
<li>In application the height and width for both scenes are same or constant.</li>
<li>so as per my research the height and width for scene remain constant which mention in the constructor but the scene adjust... | 19,589,004 | 3 | 1 | null | 2013-09-25 07:23:18.84 UTC | 5 | 2016-12-20 11:55:13.91 UTC | null | null | null | null | 2,732,483 | null | 1 | 18 | java|javafx|stage|scene | 100,951 | <p>As I understand the problem above posted. I think the stage is good enough to set the preferred height and width as per the listener get the newer request to apply on the windows size. But it has some limitations, if you maximize or minimize the javaFX screen and will try to navigate to other screen then other scree... |
35,735,762 | What's the difference between `def` and `defp` | <p>I'm going through the Programming Phoenix book and I am wondering what the difference between <code>def</code> and <code>defp</code> is.</p>
<p>There are several functions in my controller - most of them are actions like this:</p>
<pre><code>def new (conn, _params) do
...
end
</code></pre>
<p>The book had me create ... | 35,735,871 | 2 | 1 | null | 2016-03-01 23:35:33.153 UTC | 6 | 2021-08-14 21:45:11.577 UTC | 2021-08-14 21:45:11.577 UTC | null | 9,935,916 | null | 1,863,692 | null | 1 | 91 | elixir | 21,934 | <p>From <a href="http://elixir-lang.org/getting-started/modules.html#named-functions" rel="noreferrer">Elixir’s documentation on functions within modules</a>:</p>
<blockquote>
<p>Inside a module, we can define functions with <code>def/2</code> and private functions with <code>defp/2</code>. A function defined with <cod... |
21,141,817 | Why are callbacks more "tightly coupled" than promises? | <p>Can you explain me the following phrase (taken from <a href="https://stackoverflow.com/a/6824836/196210">an answer to Stack Overflow question <em>What are the differences between Deferred, Promise and Future in Javascript?</em></a>)?</p>
<p>What are the pros of using <a href="http://en.wikipedia.org/wiki/JQuery" re... | 22,254,599 | 5 | 2 | null | 2014-01-15 15:43:28.623 UTC | 18 | 2016-01-19 11:33:44.333 UTC | 2017-05-23 11:53:24.403 UTC | null | -1 | null | 196,210 | null | 1 | 36 | javascript|jquery|callback|promise | 15,716 | <p>I don't think promises are more or less coupled than callbacks, just about the same. </p>
<p>Promises however have other benefits: </p>
<ul>
<li><p>If you expose a callback, you have to document whether it will be called once (like in jQuery.ajax) or more than once (like in Array.map). Promises are called always o... |
2,001,920 | Calling a class prototype method by a setInterval event | <p>I have a simple javascript class. </p>
<p>One method of this class sets up a timer using setInterval function. The method that I want to call every time the event fires is defined inside the same class. </p>
<p>The question is, how can I pass this method as a parameter to the setInterval function?</p>
<p>One atte... | 2,001,955 | 3 | 0 | null | 2010-01-04 20:16:03.017 UTC | 8 | 2019-09-11 03:03:12.82 UTC | null | null | null | null | 93,955 | null | 1 | 29 | javascript | 26,090 | <p>setInterval can take a function directly, not just a string.
<a href="https://developer.mozilla.org/en/DOM/window.setInterval" rel="noreferrer">https://developer.mozilla.org/en/DOM/window.setInterval</a></p>
<p>i.e.</p>
<pre><code>loadingTimer = setInterval(showLoading, 100);
</code></pre>
<p>But, for optimal br... |
1,649,102 | What is a sequence (Database)? When would we need it? | <p>Why would we create a sequence even if there is a primary key?</p> | 1,649,126 | 3 | 0 | null | 2009-10-30 10:46:34.83 UTC | 14 | 2020-09-10 14:59:01.377 UTC | 2015-07-16 13:50:47.33 UTC | null | 4,801,314 | null | 128,647 | null | 1 | 47 | database | 54,327 | <p>The primary key is a column in a table.</p>
<p>The primary key needs a unique value, which needs to come from somewhere.</p>
<p>The sequence is a feature by some database products which just creates unique values. It just increments a value and returns it. The special thing about it is: there is no transaction iso... |
8,452,586 | Display a ul class when the mouse hovers over a li class css only | <p>I am currently looking into developing a CSS only drop down menu. The idea is when the mouse hovers over a ul tag it will make another ul class appear. </p>
<p>Below is the code that I currently have. </p>
<p><strong>HTML</strong></p>
<pre><code><head>
<link href="nav.css" rel="stylesheet" type="text/css... | 8,453,171 | 2 | 1 | null | 2011-12-09 22:36:59.78 UTC | 1 | 2011-12-10 02:05:47.223 UTC | null | null | null | null | 499,448 | null | 1 | 1 | html|css | 48,089 | <p>All you really need to do is nest the <code><ul></code> within your <code><li></code> element.</p>
<pre><code><nav>
<ul>
<li><a href="#">Link</a></li>
<li>
<a href="#">Link</a>
<ul>
&l... |
8,753,286 | Nerd tree: enter does not open sub dirs | <p>I installed NERDTree via Pathogen on Mac OSX 10.6.8. </p>
<p>When I vim a dir, I cannot enter into sub dirs with enter key. Furthermore, the dirs look like this:</p>
<pre><code>?~V? doc/
</code></pre>
<p>What's going on?</p> | 8,758,710 | 7 | 1 | null | 2012-01-06 04:14:09.34 UTC | 12 | 2018-05-15 22:04:25.717 UTC | null | null | null | null | 586,706 | null | 1 | 24 | vim|nerdtree | 12,635 | <p>Putting this in my .vimrc solved the problem: <code>let g:NERDTreeDirArrows=0</code></p>
<p>The creator gave me the fix: <a href="https://github.com/scrooloose/nerdtree/issues/108" rel="noreferrer">https://github.com/scrooloose/nerdtree/issues/108</a></p> |
8,763,451 | How to handle urllib's timeout in Python 3? | <p>First off, my problem is quite similar to <a href="https://stackoverflow.com/questions/2712524/handling-urllib2s-timeout-python">this one</a>. I would like a timeout of urllib.urlopen() to generate an exception that I can handle.</p>
<p>Doesn't this fall under URLError?</p>
<pre><code>try:
response = urllib.re... | 8,763,542 | 3 | 1 | null | 2012-01-06 19:36:45.01 UTC | 11 | 2022-05-03 15:30:48.663 UTC | 2017-05-23 12:34:04.717 UTC | null | -1 | null | 1,109,785 | null | 1 | 30 | python|exception|urllib | 76,491 | <p>Catch the different exceptions with explicit clauses, and check the reason for the exception with URLError (thank you <a href="https://stackoverflow.com/users/356528/r%C3%A9gis-b">Régis B.</a>)</p>
<pre class="lang-py prettyprint-override"><code>from socket import timeout
try:
response = urllib.request.urlopen(u... |
8,785,624 | How to safely wrap `console.log`? | <p>Suppose I want to include some calls to <code>console.log</code> for some legitimate production reason, say for something like a unit test harness. Obviously I would not want this to throw a premature exception if the browser doesn't have a <code>console</code>, or if <a href="https://stackoverflow.com/questions/547... | 8,794,378 | 10 | 1 | null | 2012-01-09 08:32:32.31 UTC | 10 | 2017-01-22 12:15:36.6 UTC | 2017-05-23 12:17:28.077 UTC | null | -1 | null | 886,931 | null | 1 | 48 | javascript|internet-explorer|console|logging|wrapper | 28,123 | <blockquote>
<p>Can this log function be called normally on IE, and the use of apply here is just to show it's possible?</p>
</blockquote>
<p>Yes, and yes. That particular example was aimed squarely at the <em>"is it a real function"</em> part of the linked question.</p>
<blockquote>
<p>And, I assume from the li... |
8,605,122 | How do I resolve configuration errors with Nant 0.91? | <p>After downloading Nant 0.91, I'm getting some rather cryptic configuration errors relating to configuration or security (see below). </p>
<p>I'm trying to simply upgrade my Nant executables from 0.86 to 0.91.</p>
<p>How can I resolve the issues below when building on a Windows 7 machine?</p>
<blockquote>
<p>log... | 8,605,149 | 4 | 1 | null | 2011-12-22 14:13:55.537 UTC | 14 | 2021-03-05 06:09:40.47 UTC | 2011-12-22 14:27:09.12 UTC | null | 6,112 | null | 6,112 | null | 1 | 106 | windows-7|build|log4net|nant | 21,071 | <p>Oddly enough, this is related to how the executables are extracted from the Nant 0.91 archive. (This made no sense to me until I actually tried it, but it does actually work...)</p>
<p>Source : <a href="http://surfjungle.blogspot.com/2011/11/tip-running-nant-091-on-windows-7.html">http://surfjungle.blogspot.com/201... |
8,839,958 | How does origin/HEAD get set? | <p>I have a branch set up to track a ref in origin. <code>git checkout <branchname></code> switches to that branch, and a <code>git status</code> will show me how far ahead or behind my branch is from origin, but I'm surprised that <code>origin/HEAD</code> still points at <code>origin/master</code>, and not <cod... | 8,841,024 | 7 | 1 | null | 2012-01-12 18:03:15.96 UTC | 83 | 2021-05-17 21:01:16.303 UTC | 2012-01-12 18:48:06.02 UTC | null | 37,838 | null | 37,838 | null | 1 | 187 | git | 234,086 | <p>Note first that your question shows a bit of misunderstanding. <strong>origin/HEAD represents the default branch on the remote</strong>, i.e. the HEAD that's in that remote repository you're calling origin. When you switch branches in your repo, you're not affecting that. The same is true for remote branches; you mi... |
27,221,795 | Disable automatic doubling of quotes in Notepad++ | <p>Notepad++ automatically places another quote if I type a single quote or double quote. How can I disable this?</p> | 27,221,822 | 2 | 3 | null | 2014-12-01 04:39:07.497 UTC | 1 | 2019-12-05 13:21:44.733 UTC | 2019-12-05 13:21:44.733 UTC | null | 2,932,052 | null | 1,165,493 | null | 1 | 31 | notepad++|quotes | 19,074 | <p>Notepad++ has a setting that controls the auto-completion behavior. </p>
<pre><code>Settings -> Preferences -> Auto-Completion ->Auto-Insert
</code></pre>
<p><strong>Edit:</strong> </p>
<p>Your requirement:</p>
<blockquote>
<p>We need to type quotes twice for them to appear and when they do appear, th... |
19,619,425 | What is the true difference between a real mode program and a protected mode program? | <p>I know the difference between a real mode and protected mode from the OS and hardware perspective. </p>
<p>But I am trying to figure out What does a program 'knows' about real mode or protected mode? how can you say while looking at an source code/object code that it is a real mode program or not?</p>
<p>Looking f... | 19,630,884 | 3 | 1 | null | 2013-10-27 14:54:02.877 UTC | 8 | 2013-10-28 10:06:29.7 UTC | 2013-10-27 16:53:02.753 UTC | null | 597,858 | null | 597,858 | null | 1 | 12 | operating-system|protected-mode|real-mode | 24,503 | <p>a 'real mode' program uses BIOS subroutines along with OS subroutines whereas a 'protected mode' program uses only OS subroutines. </p>
<p>instruction code differs since opcodes for registers are different and offset addresses are of different length.</p> |
436,169 | IIS7: Setup Integrated Windows Authentication like in IIS6 | <p>This is for IIS 7 on a Windows Server 2008 that is not part of an AD domain. I would like to password protect a website, where people have to enter a username/password (a windows account for example) to view the website. The website would then use its own authentication method (forms) to handle user accounts and d... | 437,758 | 4 | 0 | null | 2009-01-12 17:15:11.68 UTC | 12 | 2013-05-22 13:28:31.92 UTC | null | null | null | Jim Geurts | 3,085 | null | 1 | 52 | authentication|iis-7|windows-authentication | 150,751 | <p>Two-stage authentication is not supported with IIS7 Integrated mode. Authentication is now modularized, so rather than IIS performing authentication followed by asp.net performing authentication, it all happens at the same time.</p>
<p>You can either:</p>
<ol>
<li>Change the app domain to be in IIS6 classic mode.... |
37,357,605 | Android Firebase Analytics Custom Events Reporting in Console | <p>Accept my apologies in advance if this is the incorrect place to post this question as I am unsure what would be.</p>
<p>What I am trying to accomplish is to record a custom even using Firebase analytics that produces a similar report in the Firebase console to their example of the <code>select_content</code> event... | 37,369,326 | 4 | 2 | null | 2016-05-21 00:16:49.363 UTC | 3 | 2020-09-13 09:34:31.6 UTC | 2016-05-22 00:12:33.63 UTC | null | 1,489,990 | null | 1,489,990 | null | 1 | 36 | android|firebase|firebase-analytics | 29,389 | <p>First, credit to <a href="https://stackoverflow.com/users/268156/adamk">AdamK</a> for adding this:</p>
<blockquote>
<p>Custom parameters: Custom parameters are not represented directly in your Analytics reports, but they can be used as filters in audience definitions that can be applied to every report. Custom pa... |
30,373,343 | ReactJS component names must begin with capital letters? | <p>I am playing around with the ReactJS framework on <a href="https://jsbin.com/" rel="noreferrer">JSBin</a>.</p>
<p>I have noticed that if my component name starts with a lowercase letter it does not work.</p>
<p>For instance the following does not render:</p>
<pre><code>var fml = React.createClass({
render: func... | 30,373,505 | 6 | 1 | null | 2015-05-21 12:09:50.923 UTC | 35 | 2021-06-27 09:15:39.89 UTC | 2019-12-09 20:26:16.117 UTC | null | 1,218,980 | null | 894,903 | null | 1 | 176 | javascript|reactjs | 68,432 | <p>In JSX, lower-case tag names are considered to be HTML tags. However, lower-case tag names with a dot (property accessor) aren't.</p>
<p>See <a href="https://facebook.github.io/react/docs/jsx-in-depth.html#html-tags-vs.-react-components" rel="noreferrer">HTML tags vs React Components</a>.</p>
<ul>
<li><code><co... |
46,844,263 | Writing json to file in s3 bucket | <p>This code writes json to a file in s3,
what i wanted to achieve is instead of opening data.json file and writing to s3 (sample.json) file, </p>
<p>how do i pass the json directly and write to a file in s3 ?</p>
<pre><code>import boto3
s3 = boto3.resource('s3', aws_access_key_id='aws_key', aws_secret_access_key='a... | 46,844,646 | 4 | 2 | null | 2017-10-20 07:28:48.72 UTC | 11 | 2022-07-19 22:04:17.637 UTC | 2017-10-20 15:12:48.32 UTC | null | 400,617 | null | 8,782,508 | null | 1 | 47 | python|boto3 | 95,635 | <p>Amazon S3 is an object store (File store in reality). The primary operations are PUT and GET. You can not add data into an existing object in S3. You can only replace the entire object itself.</p>
<p>For a list of available operations you can perform on s3 see this link
<a href="http://docs.aws.amazon.com/AmazonS3/... |
47,039,812 | How to install popper.js with Bootstrap 4? | <p>From what I've read so far, popper.js is a big pain with Bootstrap 4. I can't get it to work. I keep getting this error:</p>
<blockquote>
<p>Error: Bootstrap dropdown require Popper.js (<a href="https://popper.js.org" rel="noreferrer">https://popper.js.org</a>)</p>
</blockquote>
<p>I've tried the CDN and NPM ins... | 47,041,690 | 11 | 3 | null | 2017-10-31 16:07:21.753 UTC | 18 | 2021-03-19 16:06:54.02 UTC | null | null | null | null | 40,106 | null | 1 | 66 | twitter-bootstrap|popper.js | 171,320 | <p><a href="https://cdnjs.com/libraries/popper.js" rel="noreferrer">https://cdnjs.com/libraries/popper.js</a> does not look like a right src for popper, it does not specify the file </p>
<p>with bootstrap 4 I am using this </p>
<pre><code><script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/po... |
36,631,762 | Returning HTML With fetch() | <p>I'm trying to fetch a file and return it's HTML. However it's not as simple as I'd have imagined.</p>
<pre><code> fetch('/path/to/file')
.then(function (response) {
return response.body;
})
.then(function (body) {
console.log(body);
});
</code></pre>
<p>This returns an object called ... | 36,632,271 | 7 | 5 | null | 2016-04-14 19:01:03.097 UTC | 38 | 2022-05-10 15:29:44.097 UTC | 2019-08-21 13:54:11.033 UTC | null | 3,578,997 | null | 618,584 | null | 1 | 93 | javascript|fetch-api | 117,289 | <p>You need to use the <code>.text()</code> method, instead of <code>.json()</code>. This converts the byte stream into plain text, which can be parsed by the browser as HTML.</p> |
4,757,890 | When the use of a AntiForgeryToken is not required /needed? | <p><strong>UPD:</strong> Same question asked on <a href="https://security.stackexchange.com/questions/2120/when-the-use-of-a-antiforgerytoken-is-not-required-needed">security.stackexchange.com</a> and the answer I got is different. Please follow there, to get the correct answer!</p>
<p>I'm running a rather large site ... | 4,762,560 | 1 | 2 | null | 2011-01-21 10:49:17.707 UTC | 9 | 2011-02-23 11:03:42.083 UTC | 2017-03-17 13:14:46.04 UTC | null | -1 | null | 254,716 | null | 1 | 26 | asp.net-mvc-3|csrf|antiforgerytoken | 13,269 | <p>Anti forgery tokens are useless in public parts of the site where users are not yet authenticated such as login and register forms. The way CSRF attack works is the following:</p>
<ol>
<li>A malicious user sets a HTML form on his site which resembles your site. This form could contain hidden fields as well.</li>
<l... |
60,291,987 | Idiomatic way of performance evaluation? | <p>I am evaluating a network+rendering workload for my project.</p>
<p>The program continuously runs a main loop:</p>
<pre><code>while (true) {
doSomething()
drawSomething()
doSomething2()
sendSomething()
}
</code></pre>
<p>The main loop runs more than 60 times per second.</p>
<p>I want to see the perfo... | 60,293,070 | 1 | 2 | null | 2020-02-19 02:06:41.3 UTC | 10 | 2022-08-09 06:43:57.157 UTC | null | null | null | null | 11,211,510 | null | 1 | 10 | benchmarking|microbenchmark | 2,740 | <p>Generally: For repeated short things, you can just time the whole repeat loop. (But microbenchmarking is hard; easy to distort results unless you understand the implications of doing that; for very short things, throughput and latency are different, so measure both separately by making one iteration use the result ... |
31,380,784 | Java 8 Stream String Null Or Empty Filter | <p>I've got Google Guava inside Stream:</p>
<pre><code>this.map.entrySet().stream()
.filter(entity -> !Strings.isNullOrEmpty(entity.getValue()))
.map(obj -> String.format("%s=%s", obj.getKey(), obj.getValue()))
.collect(Collectors.joining(","))
</code></pre>
<p>As you see there is a statement <code>!String.isNu... | 31,381,251 | 6 | 9 | null | 2015-07-13 10:21:13.433 UTC | 4 | 2019-10-16 05:46:03.723 UTC | 2016-05-05 17:45:01.56 UTC | null | 1,196,670 | null | 1,230,556 | null | 1 | 33 | java|java-8|guava|java-stream | 86,616 | <p>You can write your own predicate:</p>
<pre><code>final Predicate<Map.Entry<?, String>> valueNotNullOrEmpty
= e -> e.getValue() != null && !e.getValue().isEmpty();
</code></pre>
<p>Then just use <code>valueNotNullOrEmpty</code> as your filter argument.</p> |
20,011,862 | How to change the text color. Simple? | <pre><code>If CDbl(totalAverage) >= 89 Then
lblGrade.Text = "A"
ElseIf CDbl(totalAverage) >= 79 Then
lblGrade.Text = "B"
ElseIf CDbl(totalAverage) >= 69 Then
lblGrade.Text = "C"
ElseIf CDbl(totalAverage) >= 59 Then
lblGrade.Text = "D"
... | 20,011,926 | 1 | 0 | null | 2013-11-15 22:39:41.54 UTC | null | 2017-02-10 21:51:58.623 UTC | 2017-02-10 21:51:58.623 UTC | null | 6,771,952 | null | 2,990,050 | null | 1 | 2 | vb.net | 53,752 | <p>lblGrade.Forecolor is what your looking for. </p>
<p>For orange, it would be "lblGrade.ForeColor = Color.Orange"</p> |
55,326,416 | fs.FileRead -> TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be one of type string, Buffer, or URL. Received type undefined | <pre><code>function openFileDialog() {
dialog.showOpenDialog(win, {
properties: ['openFile']
} , filepath => {
if (filepath) {
fs.writeFile('path.txt', filepath, function (err, data) {
if (err) console.log(err);
});
scanFile(filepath)
}
})
}
function scanFile(filepath) ... | 55,326,551 | 1 | 2 | null | 2019-03-24 17:17:51.9 UTC | null | 2020-01-27 18:08:17.36 UTC | null | null | null | null | 7,339,889 | null | 1 | 3 | javascript|node.js|electron|fs | 47,884 | <p>The first line of <code>scanFile</code> reads: </p>
<p><code>if(!filepath || filepath[0] == 'undefined') return;</code></p>
<p>This indicates to me that <code>filepath</code> is an array, not a string (or Buffer or URL). Check the output of the <code>console.log</code> statement to see if this is the case. Since t... |
24,138,398 | How to implement PhantomJS with Selenium WebDriver using java | <p>I'm going mad, really. I have this code:</p>
<pre><code>public class Creazione extends TestCase {
private PhantomJSDriver driver;
private String baseUrl;
private boolean acceptNextAlert = true;
private StringBuffer verificationErrors = new StringBuffer();
@Before
public void setUp() throws ... | 25,444,253 | 4 | 1 | null | 2014-06-10 10:15:44.487 UTC | 8 | 2017-02-14 01:28:47.49 UTC | 2016-11-24 08:55:42.717 UTC | null | 3,885,376 | null | 3,725,538 | null | 1 | 10 | java|selenium|selenium-webdriver|phantomjs|screenshotexception | 64,988 | <p><strong>Try this, it worked for me</strong> </p>
<pre><code>DesiredCapabilities caps = new DesiredCapabilities();
caps.setJavascriptEnabled(true);
caps.setCapability("takesScreenshot", true);
caps.setCapability(
PhantomJSDriverService.PHANTOMJS_EXECUTABLE_PATH_PROPERTY,
... |
7,939,186 | Inno Setup - #define directive - how to use previously defined variable? | <p>I am using Inno Setup version 5.4.2.</p>
<p>I want to define the path for the files to copy (the Source: parameter in the [Files] section as two parts, a base path and sub-directory names, that I use for special files (like .dlls).
I have tried the following:</p>
<pre><code>#define MyAppSetupDir "D:\MyApp\setup"
#... | 7,940,051 | 1 | 0 | null | 2011-10-29 13:28:02.213 UTC | 5 | 2011-10-29 16:27:02.56 UTC | 2017-05-23 10:31:23.45 UTC | null | -1 | null | 1,019,789 | null | 1 | 47 | inno-setup | 15,711 | <pre><code>#define MyAppSetupDir "D:\MyApp\setup"
#define MyAppSetupQtDLLs MyAppSetupDir + "\DLLs"
</code></pre> |
1,554,751 | How to handle push notifications if the application is already running? | <p>How do we handle push notifications if the application is <em>already</em> running ? I want to show an alert if the application is running (instead of a push notification alert). Only if the application is not running, then show a push notification alert.</p>
<p>Also, if I send a payload to APNs, how can I create a... | 1,554,831 | 4 | 0 | null | 2009-10-12 14:00:23.933 UTC | 36 | 2017-06-27 14:54:35.13 UTC | 2017-06-27 14:54:35.13 UTC | null | 5,175,709 | null | 83,905 | null | 1 | 28 | ios|objective-c|push-notification|apple-push-notifications | 45,552 | <p>You can implement <a href="https://developer.apple.com/library/ios/DOCUMENTATION/UIKit/Reference/UIApplicationDelegate_Protocol/Reference/Reference.html#//apple_ref/occ/intfm/UIApplicationDelegate/application:didReceiveRemoteNotification:" rel="noreferrer"><code>application:didReceiveRemoteNotification:</code></a></... |
1,647,359 | Is there a way to get gcc to output raw binary? | <p>Is there a set of command-line options that will convince gcc to produce a flat binary file from a self-contained source file? For example, suppose the contents of foo.c are</p>
<pre><code>static int f(int x)
{
int y = x*x;
return y+2;
}
</code></pre>
<p>No external references, nothing to export to the linker... | 1,647,405 | 4 | 3 | null | 2009-10-30 00:26:14.077 UTC | 18 | 2020-11-04 16:55:33.267 UTC | 2016-10-18 20:49:59.013 UTC | null | 1,483,676 | null | 8,677 | null | 1 | 35 | linux|gcc|command-line|linker|x86 | 40,314 | <p>Try this out:</p>
<pre><code>$ gcc -c test.c
$ objcopy -O binary -j .text test.o binfile
</code></pre>
<p>You can make sure it's correct with <code>objdump</code>:</p>
<pre><code>$ objdump -d test.o
test.o: file format pe-i386
Disassembly of section .text:
00000000 <_f>:
0: 55 ... |
1,487,548 | How to get the original value of an attribute in Rails | <p>is there a way to get the original value that an ActiveRecord attribute (=the value that was loaded from the database)?</p>
<p>I want something like this in an observer</p>
<pre><code>before_save object
do_something_with object.original_name
end
</code></pre>
<p>The task is to remove the object from a hash tabl... | 1,487,605 | 4 | 0 | null | 2009-09-28 15:03:20.157 UTC | 13 | 2020-05-28 15:52:03.4 UTC | null | null | null | null | 6,678 | null | 1 | 101 | ruby-on-rails|activerecord | 39,211 | <h3>Before rails 5.1</h3>
<p>Appending <code>_was</code> to your attribute will give you the previous value.</p>
<h3>For rails 5.1+</h3>
<p><strong>Copied from Lucas Andrade's answer below</strong>: <a href="https://stackoverflow.com/a/50973808/9359123">https://stackoverflow.com/a/50973808/9359123</a> </p>
<hr>
<p... |
28,635,496 | Difference: LZ77 vs. LZ4 vs. LZ4HC (compression algorithms)? | <p>I understand the LZ77 and LZ78 algorithms.
I read about LZ4 <a href="http://www.brutaldeluxe.fr/products/crossdevtools/lz4/index.html" rel="noreferrer">here</a> and <a href="http://fastcompression.blogspot.co.uk/2011/05/lz4-explained.html" rel="noreferrer">here</a> and found <a href="http://code.google.com/p/lz4/so... | 28,635,890 | 1 | 2 | null | 2015-02-20 18:09:37.997 UTC | 38 | 2021-11-01 16:47:05.107 UTC | 2015-02-27 18:22:54.457 UTC | null | 2,714,852 | null | 4,485,500 | null | 1 | 49 | lossless-compression|lz4|lz77 | 41,705 | <p><a href="https://github.com/Cyan4973/lz4" rel="noreferrer">LZ4</a> is built to compress fast, at hundreds of MB/s per core. It's a fit for applications where you want compression that's very cheap: for example, you're trying to make a network or on-disk format more compact but can't afford to spend a bunch of CPU ti... |
28,537,181 | Spring Security OAuth2, which decides security? | <p>I've been trying to implement a OAuth2 authentication server using the guides by Dave Syer with some inspiration from JHipster. But I can't figure out how it all works together.</p>
<p>It looks like the security setup using the WebSecurityConfigurerAdapter is overwritten when I use ResourceServerConfigurerAdapter.<... | 28,604,260 | 1 | 4 | null | 2015-02-16 08:22:36.14 UTC | 22 | 2018-10-24 14:52:58.807 UTC | null | null | null | null | 1,385,837 | null | 1 | 42 | spring|spring-security|spring-security-oauth2 | 23,969 | <p>You need a <code>WebSecurityConfigurerAdapter</code> to secure the /authorize endpoint and to provide a way for users to authenticate. A Spring Boot application would do that for you (by adding its own <code>WebSecurityConfigurerAdapter</code> with HTTP basic auth). It creates a filter chain with order=0 by default,... |
7,579,861 | How do I disable and enable macros on the fly? | <p>I would like to test an Excel VBA app I made.<br>
However the VBA code messes around with the visibility of cells and that's a pest when editing the sheet. </p>
<p>Is there an option is enable and disable macro's on the fly without having to</p>
<pre><code>Close the sheet
Change the macro settings
Reopen the shee... | 7,579,986 | 6 | 0 | null | 2011-09-28 07:44:09.84 UTC | 2 | 2020-08-16 09:36:29.41 UTC | 2018-04-02 20:06:36.087 UTC | null | 8,112,776 | null | 650,492 | null | 1 | 6 | vba|excel|visibility | 51,092 | <p>As far as I know, you can't enable / disable macros from an opened workbook <em>on the fly</em>.<br>
Yet, you shouldn't have to because macros are only triggered thanks to a user click.</p>
<p>The only case I would see is for the Event Procedures (<code>Worksheet_Change</code> or else).<br>
You could then create pr... |
7,617,587 | Is there an alternative to using time to seed a random number generation? | <p>I'm trying to run several instances of a piece of code (2000 instances or so) concurrently in a computing cluster. The way it works is that I submit the jobs and the cluster will run them as nodes open up every so often, with several jobs per node. This seems to produce the same values for a good number of the ins... | 7,617,612 | 10 | 10 | null | 2011-10-01 01:39:41.493 UTC | 6 | 2016-03-29 17:00:35.24 UTC | 2013-12-01 03:01:39.073 UTC | null | 1,009,479 | null | 923,757 | null | 1 | 32 | c|random|random-seed | 13,916 | <p>The <code>rdtsc</code> instruction is a pretty reliable (and random) seed.</p>
<p>In Windows it's accessible via the <code>__rdtsc()</code> intrinsic.</p>
<p>In GNU C, it's accessible via:</p>
<pre><code>unsigned long long rdtsc(){
unsigned int lo,hi;
__asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi));... |
7,190,016 | How to update an object in a List<> in C# | <p>I have a <code>List<></code> of custom objects.</p>
<p>I need to find an object in this list by some property which is unique and update another property of this object. </p>
<p>What is the quickest way to do it?</p> | 7,190,035 | 11 | 0 | null | 2011-08-25 12:04:42.877 UTC | 14 | 2022-06-23 14:36:11.68 UTC | 2013-09-18 19:59:35.597 UTC | null | 706,363 | null | 386,817 | null | 1 | 122 | c#|asp.net|list|generics | 323,296 | <p>Using Linq to find the object you can do:</p>
<pre><code>var obj = myList.FirstOrDefault(x => x.MyProperty == myValue);
if (obj != null) obj.OtherProperty = newValue;
</code></pre>
<p>But in this case you might want to save the List into a Dictionary and use this instead:</p>
<pre><code>// ... define after get... |
7,055,489 | How to generate a random 10 digit number in C#? | <p>I'm using C# and I need to generate a random 10 digit number. So far, I've only had luck finding examples indicating min maximum value. How would i go about generating a random number that is 10 digits, which can begin with 0, (initially, I was hoping for <code>random.Next(1000000000,9999999999)</code> but I doubt t... | 7,055,537 | 13 | 5 | null | 2011-08-14 06:52:14.08 UTC | 5 | 2020-06-22 23:49:14.113 UTC | 2020-01-03 09:18:31.747 UTC | null | 271,200 | null | 754,479 | null | 1 | 32 | c#|.net|asp.net|random | 87,368 | <p>If you want ten digits but you allow <em>beginning with a 0</em> then it sounds like you want to generate a string, not a long integer.</p>
<p>Generate a 10-character string in which each character is randomly selected from '0'..'9'.</p> |
13,951,005 | Best Practice : Ways to handle errors and exception in web api controllers? | <p>I am working on a project and have relied heavily on web api for all my client side operations, be it account details update, new details added, modify everything has been done with ASP.NET Web Api and Backbone.js</p>
<p><strong>Current Scene :</strong></p>
<p>In the current scheme of things, I am returning a bool... | 13,955,683 | 2 | 2 | null | 2012-12-19 11:07:31.97 UTC | 9 | 2012-12-19 15:29:50.083 UTC | 2017-05-23 12:02:39.663 UTC | null | -1 | null | 1,182,982 | null | 1 | 21 | asp.net-mvc|asp.net-mvc-4|asp.net-web-api | 16,307 | <p>You should avoid using try/catch in the controller's action.</p>
<p>There are many ways to handle your problem.
The simplest and cleanest solution would probably be to use an <code>ActionFilter</code> to handle the exceptions, something along the lines of:</p>
<pre><code>public class ExceptionAttribute : Exception... |
14,181,180 | Why do SQL databases use a write-ahead log over a command log? | <p>I read about Voltdb's <a href="http://voltdb.com/docs/UsingVoltDB/ChapCmdLog.php">command log</a>. The command log records the transaction invocations instead of each row change as in a write-ahead log. By recording only the invocation, the command logs are kept to a bare minimum, limiting the impact the disk I/O wi... | 14,260,739 | 6 | 4 | null | 2013-01-06 10:19:18.6 UTC | 29 | 2020-09-15 03:59:07.027 UTC | null | null | null | null | 782,220 | null | 1 | 56 | sql|database|logging|transactions|voltdb | 14,579 | <p>I think it is better to rephrase: </p>
<blockquote>
<p>Why does new distributed VoltDB use a command log over write-ahead log?</p>
</blockquote>
<p>Let's do an experiment and imagine you are going to write your own storage/database implementation. Undoubtedly you are advanced enough to abstract a file system an... |
47,269,402 | How to center text in a row using Bootstrap 4 | <p>The problem is that <code><p></code> and <code><h1></code> are appearing on same line and no matter what I do they can't be centered. </p>
<p><strong>HTML</strong></p>
<pre><code><div class="container">
<div class="row" id="appSummary">
<h1>Why This App Is Awesome</h1>
... | 47,269,516 | 4 | 3 | null | 2017-11-13 16:45:04.857 UTC | null | 2018-04-24 14:24:48.783 UTC | 2018-04-24 14:24:48.783 UTC | null | 8,918,893 | null | 7,131,162 | null | 1 | 4 | twitter-bootstrap|bootstrap-4 | 42,550 | <p>Since you're using Bootstrap 4 which uses the flex model, change your CSS rule to:</p>
<pre><code>#appSummary{
justify-content:center;
}
</code></pre>
<p><strong><a href="https://www.bootply.com/zcn84QPlzO" rel="noreferrer">Bootply example</a></strong></p> |
43,525,052 | RxJava2 observable take throws UndeliverableException | <p>As I understand RxJava2 <code>values.take(1)</code> creates another Observable that contains only one element from the original Observable. Which <strong>MUST NOT</strong> throw an exception as it is filtered out by the effect of <code>take(1)</code> as it's happened second.</p>
<p>as in the <strong>following</stro... | 43,525,858 | 4 | 1 | null | 2017-04-20 16:29:53.6 UTC | 15 | 2020-10-05 13:23:06.32 UTC | 2017-04-20 17:46:50.453 UTC | null | 4,586,030 | null | 4,586,030 | null | 1 | 41 | java|observable|rx-java2|take | 35,709 | <ol>
<li>Yes, but because the observable 'ends' does not mean the code running inside <code>create(...)</code> is stopped. To be fully safe in this case you need to use <code>o.isDisposed()</code> to see if the observable has ended downstream.</li>
<li>The exception is there because RxJava 2 has the policy of NEVER all... |
19,468,025 | Add Items to ListView - Android | <p>This is my first experience with android. I'm trying to add items to my ListView.
I use Tabs, and the only way to see that the item was added is to change tab and then come back to the first tab.</p>
<p>I searched around, and I've always found</p>
<pre><code>adapter.notifyDataSetChanged();
</code></pre>
<p>but do... | 19,468,504 | 3 | 2 | null | 2013-10-19 15:59:19.083 UTC | 7 | 2016-11-01 08:50:43.223 UTC | 2014-10-04 18:51:08.66 UTC | null | 885,179 | null | 2,535,024 | null | 1 | 17 | java|android|listview|android-listview|fragment | 157,854 | <pre><code>ListView myListView = (ListView) rootView.findViewById(R.id.myListView);
ArrayList<String> myStringArray1 = new ArrayList<String>();
myStringArray1.add("something");
adapter = new CustomAdapter(getActivity(), R.layout.row, myStringArray1);
myListView.setAdapter(adapter);
</code></pre>
<p>Try it ... |
34,071,003 | Bootstrap 3 datepicker - minDate and maxDate | <p><a href="http://eonasdan.github.io/bootstrap-datetimepicker/" rel="noreferrer">http://eonasdan.github.io/bootstrap-datetimepicker/</a></p>
<p>Hi</p>
<p>I am trying to use the min max date options but not sure how to use it as the documentation doesn't provide example code.</p>
<p>I found on stackoverflow that you... | 34,333,138 | 4 | 4 | null | 2015-12-03 16:19:06.847 UTC | 1 | 2019-11-21 12:27:43.08 UTC | 2015-12-03 17:27:24.39 UTC | null | 4,261,249 | null | 4,261,249 | null | 1 | 9 | javascript | 89,707 | <p>To answer my question. The framework used required you to add moment to a config file otherwise it would not allow to use <a href="http://momentjs.com/" rel="noreferrer">http://momentjs.com/</a> or any other JS - spoke to the person who set up the framework and they did it for security reasons.</p>
<p>Kasun's answe... |
34,065,670 | SQL Server Inner Join using WITH(NOLOCK) | <p>I have a database query:</p>
<pre><code>DECLARE @Pager_PageNumber AS INT, @Pager_PageSize AS INT;
SET @Pager_PageNumber = 1;
SET @Pager_PageSize = 12;
SELECT
[Name], [Description], [Table1ID], [VersionNo], [Status]
FROM
(SELECT
CAST(Table1.name AS VARCHAR(MAX)) As [Name],
CAST(Tabl... | 34,065,793 | 5 | 4 | null | 2015-12-03 12:07:30.09 UTC | null | 2015-12-03 13:59:15.903 UTC | 2015-12-03 12:15:10.687 UTC | null | 13,302 | null | 4,282,901 | null | 1 | 2 | sql|sql-server|join|inner-join|self-join | 40,660 | <p>You apply <code>with (nolock)</code> to <em>tables</em>, not to subqueries. So, instead of:</p>
<pre><code>(SELECT Table1_id, MAX(version_no) as version_no
FROM Table1
where Table1.status='00002'
GROUP BY Table1_id
) as BR WITH (NOLOCK)
</code></pre>
<p>You would write:</p>
<pre><code>(SELECT Table1_id, MAX(v... |
52,428,973 | How to minify a Flutter app with Proguard? | <p>I already made a Flutter app. The release apk is about 14MB. I searched methods to minify this and found this ons: <a href="https://flutter.io/android-release/#enabling-proguard" rel="noreferrer">https://flutter.io/android-release/#enabling-proguard</a></p>
<p>But my question is, <strong>how can I get to know all m... | 59,202,013 | 3 | 5 | null | 2018-09-20 15:55:58.91 UTC | 10 | 2022-06-08 11:36:55.383 UTC | null | null | null | null | 7,657,749 | null | 1 | 27 | android|dart|flutter|proguard|minify | 27,290 | <p>First, we will enable shrinking and obfuscation in the build file. Find <code>build.gradle</code> file which sits inside <code>/android/app/</code> folder and add lines in bold</p>
<pre><code>android {
...
buildTypes {
release {
signingConfig signingConfigs.debug
minif... |
44,949,467 | When do you embed mutex in struct in Go? | <p>NOTE: I found the word 'embed' in the title was bad choice, but I will keep it. </p>
<p>I see a lot of code does like this:</p>
<pre><code>type A struct {
mu sync.Mutex
...
}
</code></pre>
<p>And use it like this:</p>
<pre><code>a := &A{}
a.mu.Lock()
defer a.mu.Unlock()
a.Something()
</code></pre>
... | 44,950,096 | 1 | 2 | null | 2017-07-06 12:53:27.897 UTC | 10 | 2021-06-29 19:42:30.197 UTC | 2017-07-08 16:02:38.207 UTC | null | 1,932,530 | null | 1,932,530 | null | 1 | 28 | go|struct|embed|mutex | 20,035 | <p>It's good practice to keep the mutex close to the data it is destined to protect. If a mutex ought to protect concurrent access to fields of a struct value, it's very convenient to add the mutex as a field of that struct, so its purpose is obvious.</p>
<p>If in your app there is only a single "instance" of... |
35,206,015 | Intellij Annotate Option Grayed Out | <p>I am trying to look at who changed a line in Intellij 15. I know I can use git blame but I want to learn how to do it correctly in intellij. I am right clicking on the line numbers on the file but when I get the context menu the <code>annotate</code> option is grayed out. What setting am I missing?</p>
<p>I looked ... | 35,466,762 | 12 | 5 | null | 2016-02-04 16:13:33.317 UTC | 5 | 2021-05-21 10:19:34.99 UTC | null | null | null | null | 2,654,083 | null | 1 | 53 | intellij-idea|intellij-15 | 24,687 | <p>Looks like its a fresh project. First configure the Version Control like Git and than <strong>commit at least once</strong>. After first commit Annotate option will not be grayed out.</p>
<p>Also update git for any new version.</p> |
290,513 | Regex pattern for numeric values | <p>I need an regular expression pattern to only accept positive whole numbers. It can also accept a single zero.</p>
<p>I do not want to accept decimals, negative number and numbers with leading zeros.</p>
<p>Any suggestions?</p> | 290,539 | 5 | 1 | null | 2008-11-14 15:51:59.98 UTC | 13 | 2015-04-08 18:07:24.507 UTC | 2008-11-14 18:55:34.68 UTC | Michael Kniskern | 26,327 | Michael Kniskern | 26,327 | null | 1 | 67 | regex | 323,072 | <pre><code>^(0|[1-9][0-9]*)$
</code></pre> |
1,009,485 | Filter element based on .data() key/value | <p>Say I have 4 div elements with class <code>.navlink</code>, which, when clicked, use <code>.data()</code> to set a key called <code>'selected'</code>, to a value of <code>true</code>:</p>
<pre><code>$('.navlink')click(function() { $(this).data('selected', true); })
</code></pre>
<p>Every time a new <code>.navlink<... | 1,009,523 | 5 | 0 | null | 2009-06-17 20:57:57.397 UTC | 26 | 2018-05-09 20:39:57.123 UTC | 2015-11-04 10:17:52.83 UTC | null | 4,370,109 | null | 113,716 | null | 1 | 130 | jquery|filter | 124,856 | <p>your filter would work, but you need to return true on matching objects in the function passed to the filter for it to grab them.</p>
<pre><code>var $previous = $('.navlink').filter(function() {
return $(this).data("selected") == true
});
</code></pre> |
126,260 | Objections against Java Webstart? | <p>Since the release of Adobe AIR I am wondering why Java Web Start has not gained more attention in the past as to me it seems to be very similar, but web start is available for a much longer time.</p>
<p>Is it mainly because of bad marketing from Sun, or are there more technical concerns other than the need of havin... | 126,314 | 6 | 0 | null | 2008-09-24 09:47:20.297 UTC | 11 | 2012-07-13 06:47:17.947 UTC | null | null | null | Yaba | 7,524 | null | 1 | 20 | java|java-web-start | 2,662 | <p>In my company we used Java Web Start to deploy Eclipse RCP applications. It was a pain to setup, but it works very well once in place. So the only recommendation I could make is to start small, to get the hang of it. Deploying one simple application first. Trying to deploy a complete product that is already made... |
403,218 | Does C# .NET support IDispatch late binding? | <hr>
<h2>The Question</h2>
<p>My question is: <strong>Does C# nativly support late-binding IDispatch?</strong></p>
<hr>
<p><em>Pretend</em> i'm trying to automate Office, while being compatible with whatever version the customer has installed. </p>
<p>In the .NET world if you developed with Office 2000 installed, ... | 489,272 | 6 | 1 | null | 2008-12-31 15:33:16.7 UTC | 7 | 2011-11-09 18:33:44.96 UTC | 2009-11-01 12:29:37.06 UTC | null | 12,597 | null | 12,597 | null | 1 | 28 | c#|late-binding|idispatch | 16,784 | <p>You can, relativly, use late-binding IDispatch binding in C#.</p>
<p><a href="http://support.microsoft.com/kb/302902" rel="noreferrer">http://support.microsoft.com/kb/302902</a></p>
<p>Here's some sample for using Excel. This way you don't need to add a needless dependancy on Microsoft's bloaty PIA:</p>
<pre><cod... |
817,087 | Call a function with argument list in python | <p>I'm trying to call a function inside another function in python, but can't find the right syntax. What I want to do is something like this:</p>
<pre><code>def wrapper(func, args):
func(args)
def func1(x):
print(x)
def func2(x, y, z):
return x+y+z
wrapper(func1, [x])
wrapper(func2, [x, y, z])
</code><... | 817,296 | 6 | 0 | null | 2009-05-03 13:43:33.843 UTC | 63 | 2018-02-24 15:18:15.863 UTC | 2009-05-03 15:20:08.807 UTC | null | 12,855 | null | 70,898 | null | 1 | 166 | python|function | 363,441 | <p>To expand a little on the other answers:</p>
<p>In the line:</p>
<pre><code>def wrapper(func, *args):
</code></pre>
<p>The * next to <code>args</code> means "take the rest of the parameters given and put them in a list called <code>args</code>". </p>
<p>In the line:</p>
<pre><code> func(*args)
</code></pre>
... |
239,147 | How do you import classes in JSP? | <p>I am a complete JSP beginner. I am trying to use a <code>java.util.List</code> in a JSP page. What do I need to do to use classes other than ones in <code>java.lang</code>?</p> | 239,293 | 6 | 1 | null | 2008-10-27 05:26:18.683 UTC | 43 | 2017-11-15 14:18:36.16 UTC | 2013-04-30 17:05:52.6 UTC | null | 2,598 | jjnguy | 2,598 | null | 1 | 249 | java|jsp | 622,952 | <p>Use the following import statement to import <code>java.util.List</code>:</p>
<pre><code><%@ page import="java.util.List" %>
</code></pre>
<p>BTW, to import more than one class, use the following format:</p>
<pre><code><%@ page import="package1.myClass1,package2.myClass2,....,packageN.myClassN" %>
</c... |
58,873,022 | How can I make a Selenium script undetectable using GeckoDriver and Firefox through Python? | <p>Is there a way to make your Selenium script undetectable in Python using <strong>geckodriver</strong>?</p>
<p>I'm using Selenium for scraping. Are there any protections we need to use so websites can't detect Selenium?</p> | 58,879,076 | 4 | 9 | null | 2019-11-15 08:29:52.28 UTC | 21 | 2022-03-29 09:41:15.663 UTC | 2021-02-06 12:49:10.667 UTC | null | 63,550 | user12285770 | null | null | 1 | 23 | python|selenium|firefox|geckodriver|selenium-firefoxdriver | 24,912 | <p>The fact that <em>selenium driven <strong>Firefox</strong> / <strong>GeckoDriver</strong> gets detected</em> doesn't depends on any specific <em>GeckoDriver</em> or <em>Firefox</em> version. The <em>Websites</em> themselves can detect the network traffic and can identify the <em>Browser Client</em> i.e. <em>Web Brow... |
37,788,342 | Is it better to define state in constructor or using property initializers? | <p>According to <a href="https://babeljs.io/blog/2015/06/07/react-on-es6-plus" rel="noreferrer">this</a> babel documentation, the correct way to use ES6+ with React is to initial components like this:</p>
<pre><code>class Video extends React.Component {
static defaultProps = {
autoPlay: false,
maxLoops: 10,
... | 37,788,410 | 3 | 3 | null | 2016-06-13 11:14:14.08 UTC | 19 | 2019-08-20 11:42:06.17 UTC | 2016-06-14 02:46:20.867 UTC | null | 218,196 | null | 2,432,961 | null | 1 | 58 | reactjs|ecmascript-next | 16,822 | <p>I believe it's a matter of personal preference. The transpiled output is the same in terms of semantics.</p>
<ul>
<li><strong><a href="https://babeljs.io/repl/#?evaluate=true&lineWrap=false&presets=es2015%2Creact%2Cstage-1%2Cstage-2%2Cstage-3&experimental=false&loose=false&spec=false&code=c... |
44,209,368 | How to change a single value in a NumPy array? | <p>I want to change a single element of an array.
For example, I have:</p>
<pre><code>A = np.array([1,2,3,4],
[5,6,7,8],
[9,10,11,12],
[13,14,15,16])
</code></pre>
<p>I want to relace <code>A[2][1] = 10</code> with <code>A[2][1] = 150</code>.
How can I do it?</p> | 44,209,429 | 1 | 2 | null | 2017-05-26 20:03:57.3 UTC | 5 | 2022-05-24 15:55:51.24 UTC | 2020-08-01 00:07:15.633 UTC | null | 7,851,470 | user8072140 | null | null | 1 | 47 | python|numpy | 198,480 | <p>Is this what you are after? Just index the element and assign a new value.</p>
<pre><code>A[2,1]=150
A
Out[345]:
array([[ 1, 2, 3, 4],
[ 5, 6, 7, 8],
[ 9, 150, 11, 12],
[13, 14, 15, 16]])
</code></pre> |
1,641,008 | How to store arbitrary name/value key pairs in a Django model? | <p>I have a fixed data model that has a lot of data fields.</p>
<pre>
class Widget(Models.model):
widget_owner = models.ForeignKey(auth.User)
val1 = models.CharField()
val2 = models.CharField()
...
val568 = ...
</pre>
<p>I want to cram even more data into this Widget by letting my users specify cu... | 1,641,346 | 5 | 0 | null | 2009-10-29 00:37:19.437 UTC | 9 | 2013-09-09 12:25:39.38 UTC | null | null | null | null | 36,680 | null | 1 | 13 | django|django-models | 13,549 | <p>Consider representing all custom properties with serialized dict. I used this in a recent project and it worked really well.</p>
<pre><code> class Widget(models.Model):
owner = models.ForeignKey(auth.User)
props = models.TextField(blank=True) # serialized custom data
@property
def props_di... |
1,884,979 | JSON to Groovy parser | <p>I found many things about converting Groovy to JSON, but oddly enough, not the other way.</p>
<p>What is the (best) JSON to Groovy parser around there ?</p> | 1,885,496 | 5 | 0 | null | 2009-12-10 23:59:45.957 UTC | 8 | 2022-01-28 10:46:11.967 UTC | null | null | null | null | 183,258 | null | 1 | 22 | json|groovy | 40,648 | <p>Because compiled Groovy classes are compatible with Java classes, you should be able to use any Java library for converting JSON to POJOs (or POGOs). <a href="http://jackson.codehaus.org/" rel="nofollow noreferrer">Jackson</a> is a fairly popular choice which you can use to convert JSON like this:</p>
<pre><code>Str... |
2,160,635 | Is there a way to print out the type of a variable/pointer in C? | <p>I want to print out (or otherwise ascertain) the type of some variable in my program. Is there a good way to do it? By good, I mean a way that works, even if it means intentionally throwing compiler errors.</p>
<p>For example:</p>
<pre><code>client.c:55: error: incompatible types in assignment
</code></pre>
<p>... | 2,160,773 | 5 | 5 | null | 2010-01-29 08:06:47.753 UTC | 6 | 2020-12-14 15:31:46.683 UTC | null | null | null | null | 239,333 | null | 1 | 35 | c|types | 88,671 | <p>try debugging using GDB, it will print all properties associated with the variable including it's type. But, your program should compile before using GDB.</p> |
2,288,970 | C++: How to build Strings / char* | <p>I'm new to C++. I want to make a <code>char*</code>, but I don't know how.<br>
In Java is it just this:</p>
<pre><code>int player = 0;
int cpu = 0;
String s = "You: " + player + " CPU: " + cpu;
</code></pre>
<p>How can I do this? I need a <code>char*</code>.</p>
<p>I'm focusing on pasting the integer after the st... | 2,289,025 | 6 | 3 | null | 2010-02-18 13:45:33.887 UTC | 4 | 2014-02-06 18:06:44.01 UTC | 2014-02-06 18:04:35.173 UTC | null | 1,530,508 | null | 155,137 | null | 1 | 14 | c++|string|char | 75,934 | <p>You almost certainly don't want to deal with char * if you can help it - you need the C++ std::string class:</p>
<pre><code>#include <string>
..
string name = "fred";
</code></pre>
<p>or the related stringstream class:</p>
<pre><code>#include <sstream>
#include <string>
#include <iostream>... |
2,261,858 | boost::python Export Custom Exception | <p>I am currently writing a C++ extension for Python using Boost.Python. A function in this extension may generate an exception containing information about the error (beyond just a human-readable string describing what happened). I was hoping I could export this exception to Python so I could catch it and do somethi... | 2,262,650 | 6 | 0 | null | 2010-02-14 16:47:17.923 UTC | 14 | 2022-01-28 10:54:02.033 UTC | 2016-06-13 21:38:10.16 UTC | null | 2,069,064 | null | 61,663 | null | 1 | 25 | c++|python|exception|boost-python | 9,067 | <p>The solution is to create your exception class like any normal C++ class</p>
<pre><code>class MyCPPException : public std::exception {...}
</code></pre>
<p>The trick is that all boost::python::class_ instances hold a reference to the object's type which is accessible through their ptr() function. You can get this... |
1,473,155 | how to get data between quotes in java? | <p>I have this lines of text the number of quotes could change like: </p>
<pre><code>Here just one "comillas"
But I also could have more "mas" values in "comillas" and that "is" the "trick"
I was thinking in a method that return "a" list of "words" that "are" between "comillas"
</code></pre>
<p>How I obtain the data... | 1,473,198 | 6 | 0 | null | 2009-09-24 17:43:03.927 UTC | 8 | 2019-07-23 23:02:23.933 UTC | 2019-07-23 23:02:23.933 UTC | null | 2,516,301 | null | 128,237 | null | 1 | 31 | java|quotes|tokenize | 68,054 | <p>You can use a regular expression to fish out this sort of information. </p>
<pre><code>Pattern p = Pattern.compile("\"([^\"]*)\"");
Matcher m = p.matcher(line);
while (m.find()) {
System.out.println(m.group(1));
}
</code></pre>
<p>This example assumes that the language of the line being parsed doesn't support es... |
1,766,492 | Overloading operator== versus Equals() | <p>I'm working on a C# project on which, until now, I've used immutable objects and factories to ensure that objects of type <code>Foo</code> can always be compared for equality with <code>==</code>. </p>
<p><code>Foo</code> objects can't be changed once created, and the factory always returns the same object for a gi... | 1,766,558 | 6 | 1 | null | 2009-11-19 21:00:12.41 UTC | 22 | 2016-09-16 19:47:06.567 UTC | 2015-09-25 20:17:21.05 UTC | null | 1,324 | null | 8,078 | null | 1 | 46 | c#|operator-overloading|equals | 34,218 | <p>I believe the standard is that for most types, .Equals checks object similarity, and operator <code>==</code> checks reference equality.</p>
<p>I believe best practice is that for immutable types, operator <code>==</code> should be checking for similarity, as well as <code>.Equals</code>. And if you want to know if... |
1,474,115 | How to find the tag associated with a given git commit? | <p>For releases I usually tag with something like v1.1.0. During my build script I am creating a fwVersion.c file that contains the current git info. Currently, I have commit, and branch info in the file, but I would like to add the tag.</p>
<p>Is this possible?</p> | 1,474,161 | 6 | 0 | null | 2009-09-24 20:58:22.16 UTC | 24 | 2020-02-27 19:45:50.487 UTC | 2018-05-31 16:32:23.597 UTC | null | 895,245 | null | 178,727 | null | 1 | 111 | git | 60,142 | <p>Check the documentation for <code>git describe</code>. It finds the nearest tag to a given commit (that is a tag which points to an ancestor of the commit) and describes that commit in terms of the tag.</p>
<p>If you only want to know if the commit is pointed to by a tag then you can check the output of:</p>
<pre>... |
1,536,393 | Good hash function for permutations? | <p>I have got numbers in a specific range (usually from 0 to about 1000). An algorithm selects some numbers from this range (about 3 to 10 numbers). This selection is done quite often, and I need to check if a permutation of the chosen numbers has already been selected.</p>
<p>e.g one step selects <code>[1, 10, 3, 18]... | 1,537,189 | 7 | 7 | null | 2009-10-08 08:22:43.917 UTC | 12 | 2011-03-31 05:48:05.977 UTC | 2009-12-29 21:36:59.783 UTC | null | 48,181 | null | 48,181 | null | 1 | 15 | performance|hash|permutation | 8,318 | <p>One potential candidate might be this.
Fix a odd integer R.
For each element e you want to hash compute the factor (R + 2*e).
Then compute the product of all these factors.
Finally divide the product by 2 to get the hash.</p>
<p>The factor 2 in (R + 2e) guarantees that all factors are odd, hence avoiding
that the p... |
1,677,990 | What is the difference between :focus and :active? | <p>What is the difference between the <code>:focus</code> and <code>:active</code> pseudo-classes?</p> | 1,678,020 | 7 | 0 | null | 2009-11-05 02:40:58.09 UTC | 75 | 2020-05-31 03:05:45.323 UTC | 2011-11-08 07:13:18.46 UTC | null | 106,224 | null | 84,201 | null | 1 | 342 | css|css-selectors|pseudo-class | 277,737 | <p><code>:focus</code> and <code>:active</code> are two different states.</p>
<ul>
<li><code>:focus</code> represents the state when the element is currently selected to receive input and </li>
<li><code>:active</code> represents the state when the element is currently being activated by the user.</li>
</ul>
<p>For e... |
1,409,225 | Changing a CSS rule-set from Javascript | <p>Is it possible to make changes to a CSS rule-set dynamically (i.e. some JS which would change a CSS rule-set when the user clicks a widget)</p>
<p>This particular CSS rule-set is applied to lots of elements (via a class selector) on the page and I want to modify it when the user clicks the widget, so that all the e... | 1,409,250 | 8 | 3 | null | 2009-09-11 06:06:33.277 UTC | 12 | 2019-04-02 07:01:02.74 UTC | 2019-04-02 07:01:02.74 UTC | null | 860,099 | null | 140,970 | null | 1 | 70 | javascript|css | 46,405 | <p>You can, but it's rather cumbersome. The best reference on how to do it is the following article: <a href="http://www.hunlock.com/blogs/Totally_Pwn_CSS_with_Javascript" rel="noreferrer">Totally Pwn CSS with Javascript</a> (<a href="https://web.archive.org/web/20130709232042/http://www.hunlock.com/blogs/Totally_Pwn_C... |
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