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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
36,522,313 | Large number of errors during Gradle build after upgrading to Android Studio 2.0 | <p>Recently, I upgraded Android Studio from version 1.5 to 2.0 but since then I observe that the number of errors and warnings has increased. Most of the errors do not make sense. Can someone please help:</p>
<pre><code>AGPBI: {"kind":"error","text":"warning: Ignoring InnerClasses attribute for an anonymous inner clas... | 36,523,016 | 7 | 5 | null | 2016-04-09 20:29:37.7 UTC | 15 | 2017-07-04 16:24:57.813 UTC | 2016-04-29 02:24:41.51 UTC | null | 445,131 | null | 3,900,531 | null | 1 | 59 | android|android-studio | 24,466 | <p>You can get rid of the meaningless warnings and errors by deleting the <code>.idea</code> folder that Android Studio 1.5 created and importing the the project into Android Studio 2.0 as a gradle project. It will recreate the <code>.idea</code> folder automatically.</p> |
14,335,966 | How to programatically export crystal report as PDF in VB.NET | <pre><code>Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.Shared
Imports CrystalDecisions.Web
Imports CrystalDecisions.ReportSource
Imports CrystalDecisions.CrystalReports
Imports System.IO
Imports System.Net
Imports System.Net.Mail
Public Class Form1
Dim cryRpt As New ReportDocument
Privat... | 14,354,329 | 3 | 3 | null | 2013-01-15 10:42:02.73 UTC | 2 | 2018-12-04 18:04:24.223 UTC | null | null | null | user1622535 | null | null | 1 | 5 | .net|vb.net|crystal-reports | 39,649 | <p>Finally found the solution from <a href="https://stackoverflow.com/questions/12486925/crystal-reports-how-to-set-database-credentials">here</a></p>
<p>The only thing is, I need to set Database credentials at runtime for the Crystal Report to work fine.</p>
<pre><code>cryRpt.SetDatabaseLogon("user", "password", "se... |
14,054,120 | Adding elements to a list in R (in nested lists) | <p>I have a nested list l3 as:</p>
<pre><code>l1<- as.list(c(1,2,3,4,5))
l1
l2<- as.list(c(6,7,8,9,10))
l2
l3<- list(l1,l2)
l3
</code></pre>
<p>l3 shows as:</p>
<pre><code>> l3
[[1]]
[[1]][[1]]
[1] 1
[[1]][[2]]
[1] 2
[[1]][[3]]
[1] 3
[[1]][[4]]
[1] 4
[[1]][[5]]
[1] 5
[[2]]
[[2]][[1]]
[1] 6
[[2]]... | 14,054,360 | 2 | 1 | null | 2012-12-27 11:43:09.437 UTC | 4 | 2012-12-27 12:09:04.29 UTC | null | null | null | null | 1,847,296 | null | 1 | 6 | r|list | 46,009 | <p>It works with <code>append</code> and <code>list</code>:</p>
<pre><code>append(l3, list(l4))
</code></pre>
<p>The result:</p>
<pre><code>> str(append(l3, list(l4)))
List of 3
$ :List of 5
..$ : num 1
..$ : num 2
..$ : num 3
..$ : num 4
..$ : num 5
$ :List of 5
..$ : num 6
..$ : num 7
..$ : nu... |
54,953,917 | `npm audit` keeps returning "Your configured registry (https://registry.npmjs.org/) does not support audit requests.". How do I make it work again? | <p>Here is the error I get:</p>
<pre><code>npm ERR! code ENOAUDIT
npm ERR! audit Your configured registry (https://registry.npmjs.org/) does not support audit requests.
</code></pre>
<p>with the log file:</p>
<pre><code>0 info it worked if it ends with ok
1 verbose cli [ '/usr/local/bin/node', '/usr/local/bin/npm', ... | 59,493,573 | 9 | 6 | null | 2019-03-02 00:02:39.67 UTC | 3 | 2021-11-11 07:12:16.58 UTC | null | null | null | null | 1,859,251 | null | 1 | 29 | javascript|node.js|npm|npm-audit | 23,859 | <p>Try running <code>npm update</code> and then <code>npm audit</code>. This should fix the problem.</p> |
31,361,571 | Yii2 : How to write distinct SQL query? | <p>I want to implement following SQL queries in Yii 2 but with no success.</p>
<p>This should give total number of unique company names:</p>
<pre class="lang-sql prettyprint-override"><code>SELECT count(DISTINCT(company_name)) FROM clients
</code></pre>
<p>And this should display <code>company_name</code> with <code... | 31,482,645 | 4 | 11 | null | 2015-07-11 20:34:57.013 UTC | 3 | 2018-08-26 11:27:14.813 UTC | 2018-08-26 11:22:37.727 UTC | null | 5,812,455 | null | 4,682,302 | null | 1 | 29 | php|mysql|yii2 | 65,401 | <p>Answering my own question I got following working solutions:</p>
<p><strong>Got the count for unique <code>company_name</code>:</strong></p>
<pre><code>$my = (new yii\db\Query())
->select(['company_name',])
->from('create_client')
->distinct()
->count();
echo $my;
</code></pre>
<p><str... |
26,599,798 | if-else flow in promise (bluebird) | <p>This is a short version of my code.</p>
<pre><code>var Promise = require('bluebird');
var fs = Promise.promisifyAll(require("fs"));
if (conditionA) {
fs.writeFileAsync(file, jsonData).then(function() {
return functionA();
});
} else {
functionA();
}
</code></pre>
<p>Both conditions call <code>functionA<... | 26,600,424 | 3 | 1 | null | 2014-10-28 02:05:24.613 UTC | 10 | 2016-09-26 11:42:54.46 UTC | null | null | null | null | 1,427,309 | null | 1 | 40 | node.js|promise|bluebird | 26,110 | <p>I think you're looking for</p>
<pre><code>(conditionA
? fs.writeFileAsync(file, jsonData)
: Promise.resolve())
.then(functionA);
</code></pre>
<p>which is short for</p>
<pre><code>var waitFor;
if (conditionA)
waitFor = fs.writeFileAsync(file, jsonData);
else
waitFor = Promise.resolve(undefined); // w... |
6,814,629 | how to get selected item of combo box | <p>i'm using lwuit with j2me . how to get combo box selected item or index? i found the function for <a href="http://lwuit.java.net/javadocs/com/sun/lwuit/ComboBox.html#setSelectedIndex%28int%29" rel="noreferrer">setSelectedIndex</a> but not for getting the selected.</p> | 6,826,224 | 2 | 0 | null | 2011-07-25 10:18:35.437 UTC | 2 | 2022-06-01 09:25:29.397 UTC | null | null | null | null | 166,476 | null | 1 | 7 | java-me|combobox|lwuit | 81,896 | <p>Use this code :</p>
<pre><code>comboBox.getSelectionModel().getSelectedIndex();
</code></pre>
<p>To return the current selected offset in the list.</p>
<pre><code>comboBox.getSelectionModel().getSelectedItem();
</code></pre>
<p>To return the current selected item in the list or null for no selection</p> |
55,499,175 | How to fix 'Error: querySrv EREFUSED' when connecting to MongoDB Atlas? | <p>I am new to MongoDB 4.0.6 and tried to implement it into my website using Node/Express.js, but when I try to connect to <code>mongodb+srv://${process.env.MONGOUSER}:${process.env.MONGOPASS}@main-03xkr.mongodb.net/main</code> I'm getting this error:</p>
<blockquote>
<p>{ Error: querySrv EREFUSED _mongodb._tcp.main... | 55,639,024 | 16 | 2 | null | 2019-04-03 15:43:44.593 UTC | 6 | 2022-05-11 07:29:37.767 UTC | 2019-04-03 17:56:04.477 UTC | null | 5,698,355 | null | 5,698,355 | null | 1 | 35 | node.js|mongodb|express|mongoose|mongodb-atlas | 68,028 | <p>If you're encountering this error try to use the older connection string for Node.js 2.2.12 or later:</p>
<pre><code>mongodb://<username>:<password>@main-shard-00-00-03xkr.mongodb.net:27017,main-shard-00-01-03xkr.mongodb.net:27017,main-shard-00-02-03xkr.mongodb.net:27017/main?ssl=true&replicaSet=Mai... |
7,405,009 | How can I install a driver using InnoSetup? | <p>I'd like to install a driver for a serial port using InnoSetup. I have the inf file, and I can install the driver manually through device manager, but I'd like to be able to include the driver in my installer so that users don't have to go through the trouble of installing the driver themselves.</p> | 7,409,448 | 3 | 1 | null | 2011-09-13 16:07:58.07 UTC | 11 | 2018-01-12 12:01:11.417 UTC | null | null | null | null | 18,480 | null | 1 | 13 | windows|driver|inno-setup | 17,870 | <p>See <a href="http://msdn.microsoft.com/en-us/library/aa376957%28v=vs.85%29.aspx">InstallHinfSection</a> on MSDN. The documentation also mentions how to invoke an installation by calling 'Rundll32.exe'. Probably you'll end up with something like this:</p>
<pre><code>[Files]
..
Source: "driver\my_x86driver.inf"; Dest... |
7,025,437 | addEventListener in jQuery | <blockquote>
<p><strong>Possible Duplicate:</strong><br />
<a href="https://stackoverflow.com/questions/2398099/jquery-equivalent-of-javascripts-addeventlistener-method">jQuery equivalent of JavaScript's addEventListener method</a></p>
</blockquote>
<p>Also from a very good jQuery tutorial on : <a href="http://itunes.... | 7,025,511 | 4 | 7 | null | 2011-08-11 11:59:04.617 UTC | null | 2022-01-13 18:01:23.74 UTC | 2022-01-13 18:01:23.74 UTC | null | 4,370,109 | null | 866,855 | null | 1 | 9 | javascript|jquery|dom-events|addeventlistener | 74,661 | <p>Try this</p>
<pre><code>// Setting the third argument to false will attach a function
// that prevents the default action from occurring and
// stops the event from bubbling.
$("#element1").bind("click", doSomething2, false);
</code></pre> |
1,964,234 | Sorting an array related to another array | <p>I have two arrays, <code>x</code> and <code>y</code>, where y is the value of the tens of every element in <code>x</code>. Now, I want to sort <code>y</code>. But, the order of <code>y</code> will be different of <code>x</code>'s. So, I can't tell after sorting which element in <code>y</code> was related to, for ins... | 1,964,290 | 4 | 1 | null | 2009-12-26 20:09:08.707 UTC | 2 | 2020-05-01 08:22:10.763 UTC | 2020-05-01 08:14:40.367 UTC | null | 1,364,007 | null | 61,250 | null | 1 | 34 | c#|arrays | 25,240 | <p><code>Array.Sort</code> has <a href="http://msdn.microsoft.com/en-us/library/85y6y2d3.aspx" rel="noreferrer">an overload</a> that accepts <strong>two</strong> arrays; one for the keys, and one for the items. The items of <strong>both</strong> are sorted according to the <code>keys</code> array:</p>
<pre><code>int[]... |
10,797,912 | How to position a Bootstrap popover? | <p>I'm trying to position a Bootstrap popover for a trigger that sits on the far top-right corner of a 960px wide web page.</p>
<p>Ideally, I'd position it on the bottom and move the arrow with CSS (so the arrow is on the top-right of the popover). Unfortunately the 'placement':'bottom' positioning is not enough, sinc... | 12,486,312 | 10 | 2 | null | 2012-05-29 11:07:16.83 UTC | 15 | 2019-04-09 09:16:03.85 UTC | 2019-04-04 17:14:05.7 UTC | null | 2,756,409 | null | 722,850 | null | 1 | 56 | javascript|css|twitter-bootstrap|css-position|popover | 145,629 | <p>This works. Tested.</p>
<pre><code>.popover {
top: 71px !important;
left: 379px !important;
}
</code></pre> |
54,785,148 | Destructuring dicts and objects in Python | <p>In Javascript, I can use <a href="https://medium.com/podiihq/destructuring-objects-in-javascript-4de5a3b0e4cb" rel="noreferrer">destructuring</a> to extract properties I want from a javascript objects in one liner. For example:</p>
<pre class="lang-js prettyprint-override"><code>currentUser = {
"id": 24,... | 63,600,600 | 8 | 10 | null | 2019-02-20 11:22:10.367 UTC | 6 | 2022-04-17 11:16:14.57 UTC | 2021-09-02 08:02:54.533 UTC | null | 8,384,910 | null | 7,707,677 | null | 1 | 51 | python | 36,667 | <p>You can use <a href="https://docs.python.org/3/library/operator.html" rel="noreferrer"><code>operator</code></a> module from standard library as follows:</p>
<pre><code>from operator import attrgetter
id, email, gender, username = attrgetter('id', 'email', 'gender', 'username')(current_user)
print(id, email, gender,... |
26,200,070 | $_SERVER['REQUEST_URI'] returns full URL instead of path to script | <p>My PHP app is not working because of $_SERVER['REQUEST_URI'] returns the full url to the script instead of a relative path. </p>
<p><strong>My environment:</strong><br>
Windows 7 64 bit.<br>
XAMPP Version 1.8.2<br>
PHP Version 5.4.16<br>
Apache Version Apache/2.4.4 (Win32) OpenSSL/0.9.8y PHP/5.4.16 </p>
<p><str... | 26,239,141 | 3 | 1 | null | 2014-10-05 06:00:56.847 UTC | null | 2016-09-15 18:22:52.34 UTC | 2014-10-05 07:26:23.94 UTC | null | 3,069,697 | null | 583,879 | null | 1 | 2 | php|apache|request-uri | 53,005 | <p>I finally got it working.<br>
Here is the steps i did ( i don't know why it is effected, but it is working now ). </p>
<ol>
<li>Install PHP Fastcgi on xampp, i follow this steps: <a href="https://commaster.net/content/installing-php-fastcgi-and-zend-opcache-xampp-windows" rel="nofollow">https://commaster.net/conte... |
26,308,167 | C# WebRequest GET/POST | <p>So I thought it's time for me to learn C#, be easy with me guys, I'm very new to this.</p>
<p>I'm trying to create a very simple application (I'm using Windows Forms Application).
My goal is:</p>
<ol>
<li>Using "GET" method, get the web page</li>
<li>Read a text field (this value changes every time that the user i... | 26,308,209 | 3 | 1 | null | 2014-10-10 21:18:46.813 UTC | 5 | 2018-03-06 15:31:29.24 UTC | 2014-10-10 22:23:40.667 UTC | null | 3,800,799 | null | 3,800,799 | null | 1 | 2 | c#|webrequest | 41,391 | <h2>Reading data with GET</h2>
<blockquote>
<p>Please refer to this answer: <a href="https://stackoverflow.com/questions/1048199/easiest-way-to-read-from-a-url-into-a-string-in-net">Easiest way to read from a URL into a string in .NET</a></p>
</blockquote>
<pre><code>using(WebClient client = new WebClient()) {
... |
7,189,676 | Passing form variables through URL | <p>What I want to accomplish is logging in to a website by simply typing in the form variables in the URL.</p>
<p>HTML code:</p>
<pre><code> <form action="httpclient.html" onsubmit="return checkSubmit();" method="post" target="_parent" name="frmHTTPClientLogin">
<input type="hidden" name="m... | 7,189,743 | 5 | 1 | null | 2011-08-25 11:36:31.38 UTC | 1 | 2019-02-27 21:44:37.33 UTC | 2011-08-25 11:42:56.687 UTC | null | 834,613 | null | 834,613 | null | 1 | 3 | html|forms|url|http-post|http-get | 64,761 | <p>If you want to type the Querystring in for the username and password, you need to do this in the address field of your browser:</p>
<pre><code>http://10.100.56.55/?username=name&password=pass
</code></pre>
<p>EDIT:
You need to find out where the form is going and what it's doing. For this, you need to check wh... |
7,265,718 | fork() child and parent processes | <p>I am trying to create a program that uses fork() to create a new process. The sample output should look like so:</p>
<p>This is the child process. My pid is 733 and my parent's id is 772.<br>
This is the parent process. My pid is 772 and my child's id is 773.</p>
<p>This is how I coded my program:</p>
<pre><code>... | 7,265,749 | 5 | 1 | null | 2011-09-01 03:03:13.603 UTC | 9 | 2018-04-25 03:41:57.963 UTC | 2011-09-01 03:46:40.01 UTC | null | 728,168 | null | 728,168 | null | 1 | 8 | c|fork|parent | 140,123 | <p>Start by reading the <a href="http://linux.die.net/man/2/fork">fork man page</a> as well as the <a href="http://pubs.opengroup.org/onlinepubs/009695399/functions/getppid.html">getppid</a> / <a href="http://linux.die.net/man/2/getpid">getpid</a> man pages.</p>
<p>From fork's</p>
<blockquote>
<p>On success, the PI... |
7,580,288 | How to determine whether T is a value type or reference class in generic? | <p>I have a generic method behavior of which depends on T is reference type or value type. It looks so:</p>
<pre><code>T SomeGenericMethod <T> (T obj)
{
if (T is class) //What condition I must write in the brackets?
//to do one stuff
else //if T is a value type like struct, int, enum and etc.
//to do a... | 7,580,347 | 5 | 0 | null | 2011-09-28 08:23:37.9 UTC | 6 | 2020-02-06 16:24:42.233 UTC | null | null | null | null | 958,593 | null | 1 | 58 | c#|.net|generics | 22,611 | <p>You can use the <a href="http://msdn.microsoft.com/en-us/library/58918ffs.aspx" rel="noreferrer"><code>typeof</code> operator</a> with generic types, so <code>typeof(T)</code> will get the <a href="http://msdn.microsoft.com/en-us/library/42892f65.aspx" rel="noreferrer"><code>Type</code></a> reference corresponding t... |
7,069,076 | Split column at delimiter in data frame | <p>I would like to split one column into two within at data frame based on a delimiter. For example,</p>
<pre><code>a|b
b|c
</code></pre>
<p>to become</p>
<pre><code>a b
b c
</code></pre>
<p>within a data frame.</p>
<p>Thanks!</p> | 7,069,385 | 6 | 1 | null | 2011-08-15 18:37:19.35 UTC | 51 | 2021-04-27 13:11:31.967 UTC | null | null | null | null | 580,530 | null | 1 | 128 | r|dataframe | 320,317 | <p>@Taesung Shin is right, but then just some more magic to make it into a <code>data.frame</code>.
I added a "x|y" line to avoid ambiguities:</p>
<pre><code>df <- data.frame(ID=11:13, FOO=c('a|b','b|c','x|y'))
foo <- data.frame(do.call('rbind', strsplit(as.character(df$FOO),'|',fixed=TRUE)))
</code></pre>
<p>O... |
7,351,205 | Where to find "gmp.h"? | <p>I am installing a library, and got this error message:</p>
<pre><code>xxxx@ubuntu$ make
(cd num; make all)
make[1]: Entering directory `/home/xxxx/num'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/xxxx/num'
(cd itv; make all)
make[1]: Entering directory `/home/xxxx/itv'
gcc -Wcast-qual -... | 7,351,295 | 7 | 0 | null | 2011-09-08 16:11:24.673 UTC | 12 | 2020-07-17 08:05:09.9 UTC | 2011-09-08 18:01:55.167 UTC | null | 702,977 | null | 702,977 | null | 1 | 74 | c|makefile | 103,039 | <p>you need to install
libgmp3-dev </p>
<p>depends on your linux </p>
<pre><code>yum install libgmp3-dev
apt-get install libgmp3-dev
</code></pre> |
7,361,135 | How to change color and font on ListView | <p>I am trying to change my font(color and size) and the back ground on my ListView. I want to change it with code lines not on xml.
my list view looks like:
the xml:</p>
<pre><code> <?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_wid... | 7,361,323 | 9 | 2 | null | 2011-09-09 11:45:26.56 UTC | 10 | 2016-12-07 10:06:55.66 UTC | 2011-09-09 12:22:04.677 UTC | null | 68,805 | null | 844,039 | null | 1 | 21 | android|listview|fonts | 110,669 | <p>You need to create a CustomListAdapter. </p>
<pre><code>public class CustomListAdapter extends ArrayAdapter <String> {
private Context mContext;
private int id;
private List <String>items ;
public CustomListAdapter(Context context, int textViewResourceId , List<String> list )
... |
7,666,977 | Syntax highlighting for Jade in Sublime Text 2? | <p>I just started using Sublime Text 2 on Mac. I also just started using <a href="http://jade-lang.com" rel="noreferrer">Jade</a> for my views in Node.js, and am wondering if there is a way to add syntax highlighting for Jade into Sublime Text 2.</p> | 7,693,609 | 9 | 0 | null | 2011-10-05 19:58:06.877 UTC | 39 | 2017-05-28 15:20:51.577 UTC | 2015-12-21 19:26:41.8 UTC | null | 5,017,283 | null | 115,182 | null | 1 | 146 | editor|sublimetext2|pug|syntax-highlighting|sublimetext | 50,793 | <p>Sublime Text 2 supports Textmate syntax definition files. There is a Jade Textmate bundle at <a href="https://github.com/miksago/jade-tmbundle" rel="nofollow noreferrer">https://github.com/miksago/jade-tmbundle</a>. </p>
<p>Install by creating a new folder in your Sublime Text "Packages" folder, call the new folder... |
7,508,044 | Android Fragment no view found for ID? | <p>I have a fragment I am trying to add into a view.</p>
<pre><code>FragmentManager fragMgr=getSupportFragmentManager();
feed_parser_activity content = (feed_parser_activity)fragMgr
.findFragmentById(R.id.feedContentContainer);
FragmentTransaction xaction=fragMgr.beginTransaction();... | 8,158,916 | 40 | 3 | null | 2011-09-21 23:53:19.81 UTC | 62 | 2021-10-22 07:14:27.167 UTC | 2013-11-09 23:03:28.227 UTC | null | 356,895 | null | 867,895 | null | 1 | 335 | android|android-fragments|illegalargumentexception | 334,202 | <p>I was having this problem too, until I realized that I had specified the wrong layout in <code>setContentView()</code> of the <code>onCreate()</code> method of the FragmentActivity.</p>
<p>The id passed into <code>FragmentTransaction.add()</code>, in your case <code>R.id.feedContentContainer</code>, must be a child... |
14,169,834 | Spring 3.1 Environment does not work with user property files | <p>I am doing this..</p>
<pre><code>AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
XmlBeanDefinitionReader xmlReader = new XmlBeanDefinitionReader(context);
xmlReader
.loadBeanDefinitions(new ClassPathResource("SpringConfig.xml"));
PropertySourcesPlaceholderConfigurer pr... | 14,170,198 | 4 | 0 | null | 2013-01-05 07:52:15.347 UTC | 9 | 2014-10-24 23:19:00.06 UTC | null | null | null | null | 1,364,959 | null | 1 | 18 | java|spring | 19,912 | <p>PropertySourcesPlaceholderConfigurer reads property files directly(as it was done by PropertyPlaceholderConfigurer in Spring 3.0 times), it's just a postprocessor which does not change the way properties are used in the Spring context - in this case properties are only available as bean definition placeholders. </p>... |
14,241,696 | How to get rid of space between divs when display inline-block and stacked horizontally? | <p>I have three divs horizontally stacked side by side to one another and these divs are set to display: inline-block. However, I have noticed that even with using some sort of CSS reset they produce a small 4px distance between each other? Why does this occur? Is there a way to globally get rid of this from happening ... | 14,241,813 | 5 | 2 | null | 2013-01-09 16:25:10.343 UTC | 10 | 2018-02-22 10:01:32.217 UTC | 2013-01-09 16:26:13.013 UTC | null | 1,558,311 | null | 1,460,983 | null | 1 | 31 | html|css | 39,617 | <p>This is caused by the fact your browser will render the DIV's inline and as with words, they are separated by spaces.</p>
<p>The width of the space is determined by the font-size, hence an easy trick is to set the font-size of your containing element to 0 and then reset the font-size in your inline divs.</p>
<pre ... |
13,887,704 | What's the point of the Prototype design pattern? | <p>So I'm learning about design patterns in school. Today I was told about the 'Prototype' design pattern. </p>
<p>I must be missing something, because I don't see the benefits from it. I've seen people online say it's faster than using <code>new</code> but this doesn't make sense; at some point, regardless of how the... | 13,887,737 | 7 | 1 | null | 2012-12-14 23:30:41.66 UTC | 21 | 2021-06-23 05:17:35.343 UTC | 2016-08-14 18:03:58.133 UTC | null | 1,371,329 | null | 1,905,391 | null | 1 | 73 | design-patterns|prototype-pattern | 26,051 | <p>The Prototype pattern is a creation pattern based on cloning a pre-configured object. The idea is that you pick an object that is configured for either the default or in the ballpark of some specific use case and then you clone this object and configure to your exact needs.</p>
<p>The pattern is useful to remove a... |
43,531,602 | Bulk Update in Entity Framework Core | <p>I pull a bunch of timesheet entries out of the database and use them to create an invoice. Once I save the invoice and have an Id I want to update the timesheet entries with the invoice Id. Is there a way to bulk update the entities without loading them one at a time?</p>
<pre><code>void SaveInvoice(Invoice invoice... | 43,531,693 | 6 | 1 | null | 2017-04-20 23:39:26.873 UTC | 2 | 2022-02-05 10:53:54.87 UTC | 2019-11-11 07:40:18.107 UTC | null | 5,170,364 | null | 1,679,126 | null | 1 | 12 | c#|.net|entity-framework|entity-framework-core | 39,839 | <p>If <code>TimeEntry</code> has an association to <code>Invoice</code> (check the navigation properties), you can probably do something like this:</p>
<pre><code>var timeEntries = context.TimeEntries.Where(t => timeEntryIds.Contains(te.Id)).ToArray();
foreach(var timeEntry in timeEntries)
invoice.TimeEntries.... |
29,864,642 | Is Objects.requireNonNull less efficient than the old way? | <p>Since JDK 7 I've been happily using the method it introduced to reject <code>null</code> values which are passed to a method which cannot accept them:</p>
<pre><code>private void someMethod(SomeType pointer, SomeType anotherPointer) {
Objects.requireNonNull(pointer, "pointer cannot be null!");
Objects.requi... | 29,864,679 | 9 | 6 | null | 2015-04-25 11:37:12.47 UTC | 14 | 2020-12-01 15:39:23.15 UTC | 2015-12-09 16:02:37.243 UTC | null | 3,233,595 | null | 1,515,834 | null | 1 | 67 | java|performance|null | 36,916 | <p>Let's look at the implementation of <code>requireNonNull</code> in Oracle's JDK:</p>
<pre><code>public static <T> T requireNonNull(T obj) {
if (obj == null)
throw new NullPointerException();
return obj;
}
</code></pre>
<p>So that's <strong>very simple</strong>. The JVM (Oracle's, anyway) incl... |
9,538,247 | CSS background disappears when using float:left | <p>This is my html:</p>
<pre><code><div class="header_wrapper">
<div class="main_nav">
<div>TEst</div>
<div>TEst</div>
<div>TEst</div>
</div>
<div class="clear"></div>
</div>
</code></pre>
<p>As you can see I w... | 9,538,268 | 4 | 1 | null | 2012-03-02 18:08:57.21 UTC | 10 | 2012-03-02 18:42:55.07 UTC | 2012-03-02 18:42:55.07 UTC | null | 246,246 | null | 401,025 | null | 1 | 21 | html|css|css-float | 47,188 | <p>Adding <code>overflow:auto;</code> to main_nav brings the background back.</p> |
32,622,899 | ITMS-90535 Unable to publish iOS app with latest Google Signin SDK | <p><a href="https://i.stack.imgur.com/htwqK.png" rel="noreferrer"><img src="https://i.stack.imgur.com/htwqK.png" alt="Error ITMS-90535 : Unexpected CFBundleExecutable Key Google Sigin"></a></p>
<p>I'm using xcode 7 GM seed and installed latest Google Signin SDK through cocoapods <code>pod "Google/SignIn</code> . I ge... | 32,645,052 | 6 | 3 | null | 2015-09-17 05:02:37.017 UTC | 16 | 2016-07-06 16:27:46.123 UTC | null | null | null | null | 311,701 | null | 1 | 67 | ios|xcode7|google-signin | 26,797 | <p>Find <code>CFBundleExecutable</code> key , remove this key from Google Signin SDK's info.plist.
You can delete all other <code>CFBundleExecutable</code> if error occurs on multiple bundles</p> |
19,694,130 | Page height to 100% of viewport? | <p>I'll start by saying that I am very very new to web development as a whole and that this is my very first responsive site so please be gentle and bear this in mind, I am the definition of the word noob at this stage. Having searched for an answer for a while and having no luck I'm hoping that someone here could help... | 19,695,231 | 4 | 2 | null | 2013-10-30 21:27:27.847 UTC | 11 | 2019-10-20 02:11:58.413 UTC | null | null | null | null | 2,939,109 | null | 1 | 33 | html|css|height | 86,724 | <p>I have made you a basic set up to show how you would style this. The best way that I have found to set the height to 100%is with the use of jQuery/Javascript. You can find the height of the window and then input that into the css with the use of it.</p>
<p>The way this works is the <code>var wH = $(window).height()... |
19,322,421 | From where do I reference a missing assembly (System.Net.Http.Formatting)? | <p>In my Visual Studio 2013 RC project, I'm getting this err msg:</p>
<blockquote>
<p>"<em>The type 'System.Net.Http.Formatting.MediaTypeFormatter' is defined
in an assembly that is not referenced. You must add a reference to
assembly 'System.Net.Http.Formatting, Version=4.0.0.0,
Culture=neutral, PublicKeyToke... | 22,346,641 | 6 | 3 | null | 2013-10-11 15:58:03.913 UTC | 9 | 2022-02-16 21:29:21.213 UTC | 2015-04-29 13:11:54.263 UTC | null | 888,472 | null | 875,317 | null | 1 | 58 | .net-assembly|visual-studio-debugging|visual-studio-2013|system.net|mediatypeformatter | 75,289 | <p>I had the same problem. I used <a href="http://www.nuget.org/packages/Microsoft.AspNet.WebApi.Client/" rel="noreferrer">Microsoft Asp Net WebApi Client 4.0.20710</a> and it worked for me.</p>
<p>Type the following command into Tools > Library Package Manager > Package Manager Console:</p>
<pre><code>Install-Packag... |
34,051,747 | Get Environment Variable from Docker Container | <p>What's the simplest way to get an environment variable from a docker container <em>that has not been declared in the Dockerfile</em>?</p>
<p>For instance, an environment variable that has been set through some <code>docker exec container /bin/bash</code> session?</p>
<p>I can do <code>docker exec container env | g... | 34,052,766 | 12 | 3 | null | 2015-12-02 19:51:30.567 UTC | 49 | 2022-07-20 17:16:37.997 UTC | 2015-12-02 19:59:30.053 UTC | null | 4,463,660 | null | 4,463,660 | null | 1 | 198 | bash|docker|environment-variables | 276,905 | <p>The proper way to run <code>echo "$ENV_VAR"</code> inside the container so that the variable substitution happens in the container is:</p>
<pre><code>docker exec <container_id> bash -c 'echo "$ENV_VAR"'
</code></pre> |
24,855,515 | Debug Error -Abort() Has Been Called | <p>I'm trying to enter a number,n and get the least super lucky number that is more than or equal to n.
Super lucky: it's decimal representation contains equal amount of digits 4 and 7. For example, numbers 47, 7744, 474477 are super lucky and 4, 744, 467 are not.</p>
<p>Here's my code</p>
<pre><code> #include&l... | 24,855,641 | 3 | 2 | null | 2014-07-20 22:29:28.937 UTC | 3 | 2016-10-13 22:28:22.95 UTC | null | null | null | null | 3,697,826 | null | 1 | 15 | c++|abort | 90,322 | <p>There are couple of issues:</p>
<ol>
<li><p>When you call <code>superLucky</code> from <code>main</code>, <code>s</code> is empty. <code>stoi(s)</code> throws an exception when <code>s</code> is empty.</p></li>
<li><p>The check <code>s.size() > 10</code> is not robust. It is platform dependent. You can use a <co... |
866,070 | NullReferenceException was unhandled, Object Reference not set to an instance of an object | <p>Whenever I run my program, I get: NullReferenceException was unhandled, Object Reference not set to an instance of an object.</p>
<p>When I start the program, I have a form appear called MaxScore where the user enters the max score and presses OK. In the OK event, I call a method from MainForm to update the maxGame... | 866,216 | 5 | 1 | null | 2009-05-14 22:00:24.827 UTC | 1 | 2013-01-14 07:11:30.227 UTC | 2009-05-14 22:28:36.88 UTC | null | 49,549 | null | 49,549 | null | 1 | 3 | c#|exception|reference|null|instance | 49,073 | <p>Did you remove: <code>InitializeComponent();</code> from the constructor?</p>
<p>If you are using the designer to build the form UI, Visual Studio builds a method in the background (Class.designer.cs) to initialize the controls. If you don't call <code>InitializeComponent()</code> before you access the UI elements... |
713,634 | Passing a delegate with two parameters as a parameter function | <p>I have a sequence of functions that look very similar but for a single line, like the following two (but I have many more of them):</p>
<pre><code>private static int HowManyHoursInTheFirstYear(IList<T> samples)
{
DateTime firstDate = samples[0].Date;
int count = 0;
while (count < samples.Count... | 713,651 | 5 | 1 | null | 2009-04-03 11:57:51.427 UTC | 6 | 2012-06-11 15:26:58.767 UTC | 2012-06-11 15:26:58.767 UTC | Stefano | 41,071 | Stefano | 85,556 | null | 1 | 23 | c#|delegates | 46,088 | <p>You're almost there! The <code>comparer</code> delegate parameter is just like any other function: <strong>You still need to pass the appropriate arguments to invoke it.</strong> In your case, that's going to mean this change:</p>
<pre><code>while (count < samples.Count && comparer(samples[count].Date, f... |
1,030,270 | Race conditions in django | <p>Here is a simple example of a django view with a potential race condition:</p>
<pre><code># myapp/views.py
from django.contrib.auth.models import User
from my_libs import calculate_points
def add_points(request):
user = request.user
user.points += calculate_points(user)
user.save()
</code></pre>
<p>Th... | 10,987,224 | 6 | 3 | null | 2009-06-23 01:53:37.477 UTC | 32 | 2021-06-28 08:01:08.547 UTC | 2014-03-15 11:04:57.393 UTC | null | 992,887 | null | 121,112 | null | 1 | 46 | python|database|django|locking|race-condition | 22,951 | <p>Django 1.4+ supports <a href="https://docs.djangoproject.com/en/stable/ref/models/querysets/#django.db.models.query.QuerySet.select_for_update" rel="nofollow noreferrer">select_for_update</a>, in earlier versions you may execute raw SQL queries e.g. <code>select ... for update</code> which depending on underlying DB... |
1,194,656 | Appending to an ObjectOutputStream | <p>Is it not possible to append to an <code>ObjectOutputStream</code>?</p>
<p>I am trying to append to a list of objects. Following snippet is a function that is called whenever a job is finished.</p>
<pre><code>FileOutputStream fos = new FileOutputStream
(preferences.getAppDataLocation() + "history" , tru... | 1,195,078 | 6 | 5 | null | 2009-07-28 14:51:03.06 UTC | 29 | 2019-10-18 08:13:00.42 UTC | 2011-10-15 16:54:46.93 UTC | null | 213,269 | null | 89,904 | null | 1 | 61 | java|serialization|append|objectoutputstream|objectinputstream | 66,526 | <p>Here's the trick: subclass <code>ObjectOutputStream</code> and override the <code>writeStreamHeader</code> method:</p>
<pre><code>public class AppendingObjectOutputStream extends ObjectOutputStream {
public AppendingObjectOutputStream(OutputStream out) throws IOException {
super(out);
}
@Override
prot... |
268,384 | PRINT statement in T-SQL | <p>Why does the PRINT statement in T-SQL seem to only sometimes work? What are the constraints on using it? It seems sometimes if a result set is generated, it becomes a null function, I assumed to prevent corrupting the resultset, but could it's output not go out in another result set, such as the row count?</p> | 268,419 | 6 | 1 | null | 2008-11-06 11:43:09.227 UTC | 24 | 2021-07-07 04:21:58.943 UTC | null | null | null | ProfK | 8,741 | null | 1 | 86 | sql-server|tsql | 307,462 | <p>So, if you have a statement something like the following, you're saying that you get no 'print' result?</p>
<pre>select * from sysobjects
PRINT 'Just selected * from sysobjects'</pre>
<p>If you're using SQL Query Analyzer, you'll see that there are two tabs down at the bottom, one of which is "Messages" and that's... |
590,159 | Does a locked object stay locked if an exception occurs inside it? | <p>In a c# threading app, if I were to lock an object, let us say a queue, and if an exception occurs, will the object stay locked? Here is the pseudo-code:</p>
<pre><code>int ii;
lock(MyQueue)
{
MyClass LclClass = (MyClass)MyQueue.Dequeue();
try
{
ii = int.parse(LclClass.SomeString);
}
catch
... | 590,174 | 6 | 5 | null | 2009-02-26 11:31:13.513 UTC | 20 | 2015-04-22 08:18:14.89 UTC | 2012-08-16 09:16:08.55 UTC | null | 512,251 | Khadaji | 55,520 | null | 1 | 91 | c#|.net|multithreading|exception|locking | 44,696 | <p>First; have you considered TryParse?</p>
<pre><code>in li;
if(int.TryParse(LclClass.SomeString, out li)) {
// li is now assigned
} else {
// input string is dodgy
}
</code></pre>
<p>The lock will be released for 2 reasons; first, <code>lock</code> is essentially:</p>
<pre><code>Monitor.Enter(lockObj);
try... |
1,244,788 | <embed> vs. <object> | <p>Which is the right/best tag to use in my HTML file when I want to display the Adobe PDF viewer?</p>
<p>Right now I'm using the code below, but there are weird side effects (e.g. it seems to steal the starting focus that I've set to another <code><input></code> text box; it doesn't seem to play real well with ... | 1,244,854 | 6 | 2 | null | 2009-08-07 13:47:21.687 UTC | 74 | 2021-07-25 19:30:48.35 UTC | 2019-08-09 15:58:15.937 UTC | null | 3,345,644 | null | 106,357 | null | 1 | 189 | html|pdf|embed-tag | 229,366 | <p><a href="http://www.webmasterworld.com/forum104/659.htm" rel="noreferrer">OBJECT vs. EMBED - why not always use embed?</a></p>
<blockquote>
<p>Bottom line: OBJECT is Good, EMBED is Old. Beside's IE's PARAM tags, any content between OBJECT tags will get rendered if the browser doesn't support OBJECT's referred plu... |
42,345,254 | Excel Solver Password: what is it and where can it be acquired/bought? | <p>I've been exploring VBA and excel and I've been writing a few basic codes around the Excel Solver. However robust the Excel Solver may appear, it's just not fast enough for my optimization problem (one iteration takes 20 minutes).</p>
<p>I've been looking around and speaking with more experienced programmers, and t... | 42,345,506 | 3 | 4 | null | 2017-02-20 12:59:42.79 UTC | 6 | 2020-10-08 14:11:27.447 UTC | null | null | null | null | 7,593,090 | null | 1 | 8 | excel|vba|passwords|solver | 43,960 | <p>You can use this password to unlock the SOLVER.XLAM project;</p>
<p>Wildebeest!!</p> |
30,899,163 | How do I use multiple consumers in Kafka? | <p>I am a new student studying Kafka and I've run into some fundamental issues with understanding multiple consumers that articles, documentations, etc. have not been too helpful with so far. </p>
<p>One thing I have tried to do is write my own high level Kafka producer and consumer and run them simultaneously, publis... | 30,899,709 | 3 | 3 | null | 2015-06-17 18:10:24.507 UTC | 13 | 2020-05-01 17:09:19.617 UTC | 2020-05-01 17:09:19.617 UTC | null | 4,157,124 | null | 5,013,133 | null | 1 | 40 | java|apache-kafka | 58,748 | <p>I think your problem lies with the auto.offset.reset property. When a new consumer reads from a partition and there's no previous committed offset, the auto.offset.reset property is used to decide what the starting offset should be. If you set it to "largest" (the default) you start reading at the latest (last) me... |
18,021,972 | Cannot access a disposed object error | <p>I am getting the error message <strong>Cannot access a disposed object.
Object name: 'ApplicationProperties'.</strong> when I tryo to re-open a form after closing it. I have noticed this is from exiting forms, and exiting is <strong>"Disposing"</strong> of them, so I have put the following code in all of my accept b... | 18,022,077 | 4 | 8 | null | 2013-08-02 16:33:23.253 UTC | 5 | 2014-12-29 12:29:25.797 UTC | 2013-08-02 18:32:49.84 UTC | null | 2,505,594 | null | 2,505,594 | null | 1 | 10 | c#|winforms | 45,828 | <p>Try this in your <code>FormClosing</code> event:</p>
<pre><code> private void ApplicationProperties_FormClosing(object sender, FormClosingEventArgs e)
{
//Hiding the window, because closing it makes the window unaccessible.
this.Hide();
this.Parent = null;
e.Cancel = true; //hides... |
46,636,255 | firebase.firestore() is not a function when trying to initialize Cloud Firestore | <p>When I try to initialize Firebase Cloud Firestore, I ran into the following error: </p>
<blockquote>
<p>Uncaught TypeError: <strong>WEBPACK_IMPORTED_MODULE_0_firebase</strong>.firestore is not a function</p>
</blockquote>
<p>I installed firebase with <code>npm install firebase --save</code> previously.</p>
<pre... | 50,684,682 | 29 | 7 | null | 2017-10-08 21:27:14.88 UTC | 17 | 2022-07-31 20:52:13.413 UTC | 2018-10-13 22:08:58.907 UTC | null | 1,640,892 | null | 8,020,389 | null | 1 | 90 | javascript|firebase|google-cloud-firestore | 127,516 | <p>I fixed it by importing multiple libraries: <code>firebase</code> and <code>firebase/firestore</code>. That's because the <code>firebase</code> core library does not include the firestore library.</p>
<pre><code>import firebase from 'firebase/app';
import 'firebase/firestore';
</code></pre> |
1,596,963 | Read a file from server with SSH using Python | <p>I am trying to read a file from a server using SSH from Python. I am using Paramiko to connect. I can connect to the server and run a command like <code>cat filename</code> and get the data back from the server but some files I am trying to read are around 1 GB or more in size.</p>
<p>How can I read the file on the... | 1,597,750 | 6 | 0 | null | 2009-10-20 20:04:00.13 UTC | 20 | 2022-03-22 23:04:52.627 UTC | 2019-04-01 10:10:07.26 UTC | null | 850,848 | null | 178,437 | null | 1 | 45 | python|ssh|paramiko | 128,954 | <p><a href="https://docs.paramiko.org/en/stable/api/sftp.html" rel="noreferrer">Paramiko's <code>SFTPClient</code> class</a> allows you to get a file-like object to read data from a remote file in a Pythonic way.</p>
<p>Assuming you have an open <code>SSHClient</code>:</p>
<pre><code>sftp_client = ssh_client.open_sft... |
2,054,022 | Is it unnecessary to put super() in constructor? | <p>Isn't this one automatically put by the compiler if I don't put it in a subclass's constructor?</p>
<p>That means I don't even need to care about it? In some articles they put it out.</p>
<p>And if I've got one constructor with arguments, will this be the constructor, or does it take a constructor without argument... | 2,054,040 | 6 | 0 | null | 2010-01-13 02:42:58.453 UTC | 60 | 2018-12-07 22:35:00.543 UTC | 2015-09-15 06:59:02.173 UTC | null | 966,185 | null | 206,446 | null | 1 | 184 | java|constructor|super | 102,400 | <p>Firstly some terminology:</p>
<ul>
<li><strong>No-args constructor:</strong> a constructor with no parameters;</li>
<li><strong>Accessible no-args constructor:</strong> a no-args constructor in the superclass visible to the subclass. That means it is either public or protected or, if both classes are in the same pa... |
2,129,123 | Rearrange columns using cut | <p>I am having a file in the following format</p>
<pre>
Column1 Column2
str1 1
str2 2
str3 3
</pre>
<p>I want the columns to be rearranged. I tried below command</p>
<blockquote>
<p>cut -f2,1 file.txt</p>
</blockquote>
<p>The command doesn't reorder the columns. Any idea why its not working?</p> | 2,129,133 | 9 | 0 | null | 2010-01-24 22:17:40.023 UTC | 28 | 2021-11-27 13:13:52.583 UTC | 2021-11-27 13:13:52.583 UTC | null | 276,052 | null | 207,335 | null | 1 | 160 | shell|csv|cut | 139,491 | <p>For the <code>cut(1)</code> man page:</p>
<blockquote>
<p>Use one, and only one of -b, -c or -f. Each LIST is made up of
one
range, or many ranges separated by commas. Selected input is written
in the same order that it is read, and is written exactly once.</p>
</blockquote>
<p>It re... |
33,636,796 | Chrome / Safari not filling 100% height of flex parent | <p>I want to have a vertical menu with a specific height.</p>
<p>Each child must fill the height of the parent and have middle-aligned text.</p>
<p>The number of children is random, so I have to work with dynamic values.</p>
<p>Div <code>.container</code> contains a random number of children (<code>.item</code>) tha... | 33,644,245 | 5 | 3 | null | 2015-11-10 18:16:27.727 UTC | 118 | 2020-03-05 06:14:52.18 UTC | 2016-07-11 02:58:07.39 UTC | null | 3,597,276 | null | 1,021,122 | null | 1 | 290 | css|google-chrome|webkit|flexbox | 218,827 | <h2>Solution</h2>
<p>Use nested flex containers.</p>
<p>Get rid of percentage heights. Get rid of table properties. Get rid of <code>vertical-align</code>. Avoid absolute positioning. <em>Just stick with flexbox all the way through.</em></p>
<p>Apply <code>display: flex</code> to the flex item (<code>.item</code>), ... |
8,582,344 | Does C# have IsNullOrEmpty for List/IEnumerable? | <p>I know generally empty List is more prefer than NULL. But I am going to return NULL, for mainly two reasons</p>
<ol>
<li>I have to check and handle null values explicitly, avoiding bugs and attacks.</li>
<li>It is easy to perform <code>??</code> operation afterwards to get a return value.</li>
</ol>
<p>For strings... | 8,582,374 | 11 | 2 | null | 2011-12-20 21:41:30.26 UTC | 14 | 2022-06-02 21:05:54.36 UTC | 2015-07-23 23:32:50.52 UTC | null | 2,751,851 | null | 939,713 | null | 1 | 72 | c#|ienumerable|isnullorempty | 90,313 | <p>nothing baked into the framework, but it's a pretty straight forward extension method.</p>
<p><a href="http://danielvaughan.org/posts/.net/collections/2010/04/18/IEnumerable-IsNullOrEmpty/" rel="noreferrer">See here</a></p>
<pre><code>/// <summary>
/// Determines whether the collection is null or contain... |
8,474,104 | Android Fragment lifecycle over orientation changes | <p>Using the compatibility package to target 2.2 using Fragments.</p>
<p>After recoding an activity to use fragments in an app I could not get the orientation changes/state management working so I've created a small test app with a single FragmentActivity and a single Fragment.</p>
<p>The logs from the orientation ch... | 8,678,705 | 7 | 2 | null | 2011-12-12 12:10:46.467 UTC | 56 | 2017-03-22 12:32:56.76 UTC | 2013-09-18 13:41:41.263 UTC | null | 422,060 | null | 633,280 | null | 1 | 126 | android|android-activity|android-fragments|orientation | 103,577 | <p>You're layering your Fragments one on top of the other.</p>
<p>When a config change occurs the old Fragment adds itself to the new Activity when it's recreated. This is a massive pain in the rear most of the time.</p>
<p>You can stop errors occurring by using the same Fragment rather than recreating a new one. Sim... |
6,985,222 | how to clear whole database in Rails seeds.rb | <p>What is the best way to accomplish this? As for now I'm using:</p>
<pre><code>Role.delete_all
User.delete_all
...
</code></pre>
<p>but how to clear habtm talbes? Like roles_users</p>
<h2>Updated Answer</h2>
<p>I think ream88 response answers my question most precisely, but probably the bestidea is to follow core... | 6,985,839 | 3 | 0 | null | 2011-08-08 16:25:18.5 UTC | 11 | 2016-09-25 09:13:10.393 UTC | 2011-08-09 14:10:47.283 UTC | null | 229,695 | null | 229,695 | null | 1 | 26 | ruby-on-rails | 24,345 | <p>I definitely agree with @coreyward's answer, but if you really want to clear all tables inside your <code>seeds.rb</code> file, this snippet will do the job:</p>
<pre><code>ActiveRecord::Base.establish_connection
ActiveRecord::Base.connection.tables.each do |table|
next if table == 'schema_migrations'
# MySQL ... |
6,796,974 | Force Download an Image Using Javascript | <p>I want to know if there is any way to make a script using Javascript/jQuery to download (open a download dialog) a image so the browser won't just show it.</p> | 6,799,284 | 4 | 3 | null | 2011-07-22 22:57:54.807 UTC | 15 | 2016-12-09 03:31:50.803 UTC | 2014-12-29 21:27:53.483 UTC | null | 87,015 | null | 126,353 | null | 1 | 19 | javascript|jquery|file-io|force-download | 101,444 | <p>You need to use server-side scripting for this. <a href="https://stackoverflow.com/search?q=force%20download%20script">Search on stackoverflow</a>.</p>
<p>Alternately, your server might allow you to alter headers dynamically via configuration.</p>
<h3>Apache solution with mod_headers</h3>
<p>Place your downloadab... |
23,665,056 | AngularJS : Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource | <p>here is my code :</p>
<pre><code>angular.module('option')
.factory('optionListService', ['$resource', function($resource) {
return $resource(HOST+'option/action/:id', {}, {
'get': {method:'GET'},
'save': {method:'POST'},
'query': {method:'GET', isArray:true},
... | 23,665,430 | 4 | 3 | null | 2014-05-14 21:01:59.74 UTC | 15 | 2017-07-02 08:01:46.733 UTC | null | null | null | null | 2,822,643 | null | 1 | 17 | apache|angularjs | 60,001 | <p>Add those headers on the server side:</p>
<pre><code>Access-Control-Request-Headers: X-Requested-With, accept, content-type
Access-Control-Allow-Methods: GET, POST
</code></pre>
<p>If still not working post the details of the preflight <code>OPTIONS</code> request which the browser is sending.</p>
<p><strong>Why ... |
18,351,198 | What are the uses of the exec command in shell scripts? | <p>Can anyone explain what are the uses of the exec command in shell scripting with simple examples?</p> | 18,351,547 | 2 | 2 | null | 2013-08-21 07:22:49.933 UTC | 110 | 2017-03-19 20:40:38.68 UTC | 2014-11-24 16:51:00.613 UTC | null | 33,204 | null | 2,400,564 | null | 1 | 284 | shell|unix|exec | 339,780 | <p>The <code>exec</code> built-in command mirrors functions in the kernel, there are a family of them based on <code>execve</code>, which is usually called from C.</p>
<p><code>exec</code> replaces the current program in the current process, without <code>fork</code>ing a new process. It is not something you would us... |
40,122,162 | Entity Framework Core - Lazy Loading | <p>Bowing to my Visual Studios request, I started my latest project using Entity Framework Core (1.0.1)</p>
<p>So writing my database models as I always have using the 'virtual' specifier to enable lazy loading for a List. Though when loading the parent table it appears that the child list never loads.</p>
<p><strong... | 40,143,716 | 7 | 6 | null | 2016-10-19 04:30:34.167 UTC | 9 | 2019-09-10 22:05:55.15 UTC | 2016-12-27 08:52:36.607 UTC | null | 1,478,537 | null | 5,073,958 | null | 1 | 49 | c#|entity-framework-core | 68,113 | <p>So it appears that EF Core does not currently support lazy loading. Its coming but may be a while off. </p>
<p>For now if anyone else comes across this problem and is struggling. Below is a demo of using <strong>Eager loading</strong> which is what for now you have to use.</p>
<p>Say before you had a person object... |
5,282,242 | Spring AOP: Getting parameters of the pointcut annotation | <p>Consider I have defined the following aspect:</p>
<pre><code>@Aspect
public class SampleAspect {
@Around(value="@annotation(sample.SampleAnnotation)")
public Object display(ProceedingJoinPoint joinPoint) throws Throwable {
// ...
}
}
</code></pre>
<p>and the annotation</p>
<pre><code>public @... | 5,296,145 | 2 | 1 | null | 2011-03-12 11:36:16.9 UTC | 12 | 2019-08-13 17:39:30.36 UTC | null | null | null | null | 164,165 | null | 1 | 28 | spring|aop|spring-aop | 27,095 | <p>Change the advice signature to </p>
<pre><code>@Around(value="@annotation(sampleAnnotation)")
public Object display(ProceedingJoinPoint joinPoint, SampleAnnotation sampleAnnotation ) throws Throwable {
// ...
}
</code></pre>
<p>and you will have access to the value in the annotation.</p>
<p>See <a href="http:... |
975,982 | User Defined Type (UDT) as parameter in public Sub in class module (VB6) | <p>I've tried to solve this problem, but can't find any solution. I have a UDT defined in a normal module, and wanted to use it as parameter in a <code>Public Sub</code> in a Class Module. I then get a compile error:</p>
<blockquote>
<p>Only public user defined types defined in public object modules can be used as p... | 978,983 | 7 | 0 | null | 2009-06-10 14:37:11.547 UTC | 12 | 2018-01-03 18:24:55.887 UTC | 2017-02-24 17:27:20.493 UTC | null | 481,061 | null | 74,415 | null | 1 | 17 | vba|vb6|user-defined-types | 47,785 | <blockquote>
<p>So is there any way to have a public
UDT used as a parameter in a public
sub in a class?</p>
</blockquote>
<p>In a word, no. The closest you can come with just Classic VB code would be to create a class that replicates the UDT and use that instead. There are definitely advantages there, but you... |
1,254,366 | Problem installing RMagick rubygem on Centos 5 | <p>I'm having problems installing the RMagick rubygem on Centos 5. I've followed the steps detailed in <a href="http://rmagick.rubyforge.org/install2-linux.html" rel="noreferrer">http://rmagick.rubyforge.org/install2-linux.html</a> but when I try:</p>
<pre><code>sudo gem install rmagick
</code></pre>
<p>the result is... | 1,257,925 | 7 | 0 | null | 2009-08-10 11:22:33.643 UTC | 9 | 2013-02-01 06:33:39.667 UTC | null | null | null | null | 2,167,959 | null | 1 | 17 | rubygems|rmagick|centos5 | 23,669 | <p>So I've finally managed to install version 1.15.17 of the rmagick rubygem! Here's what I did:</p>
<ol>
<li>Uninstalled ImageMagick 6.5.4-9 and the delegate libraries that I had installed from source</li>
<li><code>sudo yum install ImageMagick</code></li>
<li><code>sudo yum install ImageMagick-devel</code></li>
<li... |
274,639 | How To Create a Quick Minimal Firefox Extension? | <p>What the minimum basic setup required to begin developing a Firefox extension?</p> | 384,933 | 7 | 3 | null | 2008-11-08 11:35:40.6 UTC | 19 | 2014-07-23 01:03:21.803 UTC | 2011-07-02 18:57:50.91 UTC | Balaji Sowmyanarayanan | 188,760 | labs | 35,738 | null | 1 | 19 | firefox|xul | 4,609 | <p>Step 1: Use the <a href="https://addons.mozilla.org/en-US/developers/tools/builder" rel="nofollow noreferrer">Add-on Builder</a> to generate all the necessary files.</p>
<p>Step 2: Extract the downloaded files into your development area.</p>
<p>Step 3: Create a text file in your profile's extensions folder named a... |
901,224 | Listening for input without focus in Java | <p>I'm making a small program in Java using the Robot class. The program takes over the mouse. while in the course of debugging if it starts acting in a way that I don't want it's hard to quit the program, since I can't move the mouse over to the terminate button in eclipse, and I can't use hotkeys to hit it because th... | 904,448 | 7 | 0 | null | 2009-05-23 09:44:37.187 UTC | 9 | 2021-01-10 16:59:23.013 UTC | null | null | null | null | 63,791 | null | 1 | 25 | java|keylistener | 40,267 | <p>This is not a trivial problem and Java doesn't give you a way to do it elegantly. You can use a solution like banjollity suggested but even that won't work all the time if your errant mouse clicks open another fullsized window currently open in your taskbar for example. </p>
<p>The fact is, Java by default gives de... |
385,912 | Ruby: Object.to_a replacement | <p>I need to convert a passed in argument (single object or collection) to an Array. I don't know what the argument is. If it is an Array already, I want to leave it, otherwise create a one-element array from it. I'm looking to <strong>allow both <code>method(:objs => obj)</code> and <code>method(:objs => [obj1, ... | 386,705 | 7 | 0 | null | 2008-12-22 10:06:09.13 UTC | 8 | 2011-07-22 18:12:53.523 UTC | 2011-07-22 18:01:50.697 UTC | Daniel Beardsley | 211,563 | Daniel Beardsley | 13,216 | null | 1 | 28 | ruby | 21,946 | <p>Use the method <a href="http://www.ruby-doc.org/core/classes/Kernel.html#M005989" rel="noreferrer">Kernel#Array</a>:</p>
<pre><code>Array([1,2,3]) #=> [1, 2, 3]
Array(123) #=> [123]
</code></pre>
<p>Yes it may look like a class at first but this is actually a method that starts with a capital letter.</p> |
539,797 | How should I do integer division in Perl? | <p>What is a good way to <strong>always</strong> do integer division in Perl?</p>
<p>For example, I want:</p>
<pre><code>real / int = int
int / real = int
int / int = int
</code></pre> | 539,805 | 7 | 0 | null | 2009-02-12 02:44:20.783 UTC | 9 | 2022-02-17 00:24:08.993 UTC | 2009-02-12 02:54:50.603 UTC | Rich B | 5,640 | Bryan Denny | 396 | null | 1 | 63 | perl|integer-division | 120,169 | <p>You can cast ints in Perl:</p>
<pre><code>int(5/1.5) = 3;
</code></pre> |
125,341 | How do you do Impersonation in .NET? | <p>Is there a simple out of the box way to impersonate a user in .NET?</p>
<p>So far I've been using <a href="http://www.codeproject.com/KB/cs/zetaimpersonator.aspx" rel="noreferrer">this class from code project</a> for all my impersonation requirements.</p>
<p>Is there a better way to do it by using .NET Framework?<... | 125,356 | 7 | 1 | null | 2008-09-24 03:55:09.147 UTC | 109 | 2022-08-09 14:32:39.88 UTC | 2012-10-11 14:47:56.437 UTC | b.ashwin | 743 | b.ashwin | 1,909 | null | 1 | 149 | c#|.net|impersonation | 290,376 | <p>Here is some good overview of .NET impersonation concepts.</p>
<ul>
<li><a href="https://web.archive.org/web/20150613031724/http://michiel.vanotegem.nl/2006/07/windowsimpersonationcontext-made-easy/" rel="noreferrer">Michiel van Otegem: WindowsImpersonationContext made easy</a></li>
<li><a href="http://msdn.microso... |
568,657 | Is it ever ok to store password in plain text in a php variable or php constant? | <p>As per question, is it safe to store passwords on php pages such as</p>
<pre><code>$password = 'pa$$w0rd';
</code></pre>
<p>If the users can't see it, it's safe, right?</p>
<p>EDIT:
Some people actually suggested using hash, however, there would be a problem with database server connection password, wouldn't it?<... | 568,681 | 8 | 0 | null | 2009-02-20 08:02:28.663 UTC | 8 | 2010-12-01 14:47:56.677 UTC | 2009-05-07 09:12:52.493 UTC | Hao Wooi Lim | 31,728 | Hao Wooi Lim | 31,728 | null | 1 | 31 | php|security|passwords | 31,078 | <p>The short answer is both No, and It Depends.</p>
<p>It's almost never a good idea to store passwords in plain text, especially in a web accessible location, if for <strong>no</strong> other reason than a simple server misconfiguration or an echo in the wrong place could expose it to the world.</p>
<p>If you MUST s... |
516,730 | What does the Visual Studio "Any CPU" target mean? | <p>I have some confusion related to the .NET platform build options in Visual Studio 2008.</p>
<p>What is the "Any CPU" compilation target, and what sort of files does it generate? I examined the output executable of this "Any CPU" build and found that they are the x86 executables (who would not see that coming!). So,... | 516,740 | 8 | 3 | null | 2009-02-05 16:43:26.713 UTC | 147 | 2021-05-26 08:29:44.807 UTC | 2019-11-11 15:16:56.697 UTC | JPunyon | 63,550 | galets | 14,395 | null | 1 | 557 | .net|visual-studio-2008|build|64-bit | 254,840 | <p>An <strong>AnyCPU</strong> assembly will JIT to 64-bit code when loaded into a 64-bit process and 32 bit when loaded into a 32-bit process.</p>
<p>By limiting the CPU you would be saying: <em>There is something being used by the assembly (something likely
unmanaged) that requires 32 bits or 64 bits.</em></p> |
1,236,148 | HTML CSS How to stop a table cell from expanding | <p>I have a table which is built with the contents coming from a returned dataset. What I want to do is stop a 'description' cell from expanding over 280px wide, no matter what the content length (its s string). I have tried:</p>
<pre><code><td align="left" valign="top" style="overflow:hidden;" nowrap="nowrap" wi... | 1,236,163 | 8 | 0 | null | 2009-08-05 22:43:23.073 UTC | 13 | 2021-03-18 08:36:30.47 UTC | 2017-01-10 19:51:20.807 UTC | null | 322,020 | null | 109,614 | null | 1 | 47 | html|css | 135,742 | <p>It appears that your HTML syntax is incorrect for the table cell. Before you try the other idea below, confirm if this works or not... You can also try adding this to your table itself: table-layout:fixed.. .</p>
<pre><code><td style="overflow: hidden; width: 280px; text-align: left; valign: top; whitespace: ... |
311,062 | caching JavaScript files | <p>Which is the best method to make the browser use cached versions of js files (from the serverside)?</p> | 312,696 | 8 | 0 | null | 2008-11-22 08:05:37.563 UTC | 27 | 2021-09-30 08:08:31.66 UTC | 2008-11-22 08:19:16.1 UTC | Ken | 20,074 | Vasil | 7,883 | null | 1 | 55 | javascript|http|caching | 158,048 | <p>Have a look at Yahoo! tips: <a href="https://developer.yahoo.com/performance/rules.html#expires" rel="nofollow noreferrer">https://developer.yahoo.com/performance/rules.html#expires</a>. </p>
<p>There are also tips by Google: <a href="https://developers.google.com/speed/docs/insights/LeverageBrowserCaching" rel="no... |
437,897 | What are unit testing and integration testing, and what other types of testing should I know about? | <p>I've seen other people mention several types of testing on Stack Overflow.</p>
<p>The ones I can recall are unit testing and integration testing. Especially unit testing is mentioned a lot. What exactly is unit testing? What is integration testing? What other important testing techniques should I be aware of? </p... | 437,903 | 9 | 3 | null | 2009-01-13 03:43:31.087 UTC | 27 | 2020-07-09 08:15:48.067 UTC | 2009-01-13 06:10:29.447 UTC | Norman Ramsey | 41,661 | Daniel | 51,133 | null | 1 | 44 | unit-testing|testing|integration-testing | 30,546 | <p>Off the top of my head:</p>
<ul>
<li><strong>Unit testing</strong> in the sense of "testing the smallest isolatable unit of an application"; this is typically a method or a class, depending on scale.</li>
<li><strong>Integration testing</strong></li>
<li><strong>Feature testing</strong>: this may cut across units, ... |
481,312 | Why is design-by-contract not so popular compared to test-driven development? | <p>You may think this question is like <a href="https://stackoverflow.com/questions/394591/design-by-contract-and-test-driven-development">this</a> question asked on StackOverflow earlier. But I am trying to look at things differently.</p>
<p>In TDD, we write tests that include different conditions, criteria, verifica... | 481,392 | 9 | 4 | null | 2009-01-26 20:57:44.09 UTC | 18 | 2018-04-03 12:20:55.737 UTC | 2017-07-29 15:19:59.727 UTC | null | 3,924,118 | Perpetualcoder | 37,494 | null | 1 | 46 | unit-testing|tdd|design-by-contract | 13,337 | <p>The main problem with DBC is that in the vast majority of cases, either the contract cannot be formally specified (at least not conveniently), or it cannot be checked with current static analysis tool. Until we get past this point for mainstream languages (not Eiffel), DBC will not give the kind of assurance that pe... |
244,453 | Best documentation for Boost:asio? | <p>The documentation available on the <a href="http://www.boost.org/doc/libs/1_36_0/doc/html/boost_asio.html" rel="noreferrer">boost website</a> is... limited.</p>
<p>From what I've been able to read, the general consensus is that it is simply difficult to find good documentation on the boost::asio library.</p>
<p>Is... | 244,583 | 9 | 0 | null | 2008-10-28 19:11:03.9 UTC | 93 | 2019-04-15 18:58:51.027 UTC | 2008-11-02 23:54:57.473 UTC | Head Geek | 12,193 | michalmocny | 29,701 | null | 1 | 147 | c++|boost|boost-asio | 60,948 | <p>First, I've been using Boost.Asio for quite a while already -- and I share your concern. To address your question:</p>
<ul>
<li>There really is very scarce documentation about Boost.Asio aside from the introduction and tutorial. I am not the author, but this is mostly because there are just too many things to docum... |
88,582 | Structure of a PDF file? | <p>For a small project I have to parse pdf files and take a specific part of them (a simple chain of characters). I'd like to use python to do this and I've found several libraries that are capable of doing what I want in some ways.</p>
<p>But now after a few researches, I'm wondering what is the real structure of a p... | 88,595 | 12 | 0 | null | 2008-09-17 23:11:33.757 UTC | 45 | 2020-05-04 19:39:18.15 UTC | null | null | null | Valentin Jacquemin | 11,544 | null | 1 | 81 | pdf | 114,887 | <p>Here is a link to Adobe's reference material</p>
<p><a href="http://www.adobe.com/devnet/pdf/pdf_reference.html" rel="noreferrer">http://www.adobe.com/devnet/pdf/pdf_reference.html</a></p>
<p>You should know though that PDF is only about presentation, not structure. Parsing will not come easy.</p> |
751,522 | How to change identity column values programmatically? | <p>I have a MS SQL 2005 database with a table <code>Test</code> with column <code>ID</code>. <code>ID</code> is an identity column. </p>
<p>I have rows in this table and all of them have their corresponding ID auto incremented value.</p>
<p>Now I would like to change every ID in this table like this:</p>
<p><code>ID... | 1,188,102 | 13 | 0 | null | 2009-04-15 12:43:47.93 UTC | 27 | 2019-03-05 07:40:58.25 UTC | 2019-03-05 07:40:58.25 UTC | null | 10,877,860 | null | 38,940 | null | 1 | 160 | sql-server|sql-server-2005|tsql|identity|sql-server-2005-express | 324,187 | <p>You need to </p>
<pre><code>set identity_insert YourTable ON
</code></pre>
<p>Then delete your row and reinsert it with different identity.</p>
<p>Once you have done the insert don't forget to turn identity_insert off</p>
<pre><code>set identity_insert YourTable OFF
</code></pre> |
1,183,903 | Regex using javascript to return just numbers | <p>If I have a string like "something12" or "something102", how would I use a regex in javascript to return just the number parts?</p> | 1,183,906 | 13 | 0 | null | 2009-07-26 06:34:32.043 UTC | 28 | 2021-01-12 08:56:17.23 UTC | 2018-02-08 21:07:29.913 UTC | null | 431,053 | null | 40,568 | null | 1 | 173 | javascript|regex | 295,192 | <p>Regular expressions:</p>
<pre class="lang-js prettyprint-override"><code>var numberPattern = /\d+/g;
'something102asdfkj1948948'.match( numberPattern )
</code></pre>
<p>This would return an Array with two elements inside, '102' and '1948948'. Operate as you wish. If it doesn't match any it will return null.</p>
... |
331,536 | Windows threading: _beginthread vs _beginthreadex vs CreateThread C++ | <p>What's a better way to start a thread, <code>_beginthread</code>, <code>_beginthreadx</code> or <code>CreateThread</code>?</p>
<p>I'm trying to determine what are the advantages/disadvantages of <code>_beginthread</code>, <code>_beginthreadex</code> and <code>CreateThread</code>. All of these functions return a th... | 331,567 | 17 | 1 | null | 2008-12-01 17:20:57.13 UTC | 62 | 2020-08-08 09:50:47.23 UTC | 2017-05-09 03:02:14.623 UTC | Kiril Gantchev | 7,659,995 | Kiril Gantchev | 28,760 | null | 1 | 139 | c++|c|multithreading|winapi | 101,164 | <p><code>CreateThread()</code> is a raw Win32 API call for creating another thread of control at the kernel level.</p>
<p><code>_beginthread()</code> & <code>_beginthreadex()</code> are C runtime library calls that call <code>CreateThread()</code> behind the scenes. Once <code>CreateThread()</code> has returned, ... |
6,361,312 | Negative regex for Perl string pattern match | <p>I have this regex:</p>
<pre><code>if($string =~ m/^(Clinton|[^Bush]|Reagan)/i)
{print "$string\n"};
</code></pre>
<p>I want to match with Clinton and Reagan, but not Bush.</p>
<p>It's not working.</p> | 6,363,029 | 5 | 3 | null | 2011-06-15 16:50:13.123 UTC | 27 | 2017-08-12 14:09:18.597 UTC | 2017-08-12 14:09:18.597 UTC | null | 63,550 | null | 120,457 | null | 1 | 51 | regex|perl | 161,005 | <p>Sample text:</p>
<blockquote>
<p>Clinton said<br>
Bush used crayons<bR>
Reagan forgot<br></p>
</blockquote>
<p>Just omitting a Bush match:</p>
<pre><code>$ perl -ne 'print if /^(Clinton|Reagan)/' textfile
Clinton said
Reagan forgot
</code></pre>
<p>Or if you really want to specify:</p>
<pre><code>$ perl -... |
6,818,978 | Dialect not getting set in hibernate | <p>I am using Hibernate 3 and MySQL5.5.</p>
<p>I am a newbie to hibernate and I am getting the below Exception</p>
<pre><code>Exception in thread "main" org.hibernate.HibernateException: 'hibernate.dialect' must be set when no Connection available
at org.hibernate.dialect.resolver.DialectFactory.buildDialect(Dial... | 6,819,137 | 6 | 3 | null | 2011-07-25 16:01:06.42 UTC | 1 | 2015-12-09 00:19:55.74 UTC | 2011-07-25 16:53:55.74 UTC | null | 102,040 | null | 102,040 | null | 1 | 7 | hibernate|dialect | 57,008 | <p>Either your first or second line should work. The second way, with just "dialect" is the way shown in the <a href="http://docs.jboss.org/hibernate/core/3.6/reference/en-US/html/session-configuration.html#configuration-xmlconfig">Hibernate reference</a>. If you're still getting that error, it suggests you may have so... |
6,570,779 | Why should I use applicative functors in functional programming? | <p>I'm new to Haskell, and I'm reading about functors and applicative functors. Ok, I understand functors and how I can use them, but I don't understand why <strong>applicative</strong> functors are useful and how I can use them in Haskell. Can you explain to me with a simple example why I need applicative functors?</p... | 6,571,286 | 7 | 2 | 2012-05-24 22:51:15.51 UTC | 2011-07-04 11:21:40.343 UTC | 18 | 2017-04-27 03:50:53.363 UTC | 2012-05-24 22:51:15.51 UTC | null | 283,240 | null | 274,299 | null | 1 | 82 | haskell|functional-programming|functor | 18,107 | <p><a href="http://www.soi.city.ac.uk/~ross/papers/Applicative.html" rel="noreferrer">Applicative functors</a> are a construction that provides the midpoint between functors and <a href="http://en.wikipedia.org/wiki/Monad_%28functional_programming%29" rel="noreferrer">monads</a>, and are therefore more widespread than ... |
6,761,415 | How to set a cookie for another domain | <p>Say I have a website called <code>a.com</code>, and when a specific page of this site is loaded, say page link, I like to set a cookie for another site called <code>b.com</code>, then redirect the user to <code>b.com</code>. </p>
<p>I mean, on load of <code>a.com/link</code> I want to set a cookie for <code>b.com</... | 6,761,443 | 11 | 2 | null | 2011-07-20 11:51:12.557 UTC | 52 | 2020-10-14 15:51:42.6 UTC | 2016-07-26 06:18:30.9 UTC | null | 4,273,915 | null | 851,784 | null | 1 | 215 | javascript|cookies|redirect | 286,498 | <p>You cannot set cookies for another domain. Allowing this would present an enormous security flaw.</p>
<p>You need to get b.com to set the cookie. If a.com redirect the user to <code>b.com/setcookie.php?c=value</code></p>
<p>The setcookie script could contain the following to set the cookie and redirect to the corr... |
45,304,810 | Angular Form validation on child components | <p>I've written a dynamic form in which there is a main part and sub parts based on a type that's selected in the main part (widget.type). Showing and hiding the sub parts is done with an ngSwitch.</p>
<p>HTML of the form looks like this:</p>
<pre><code><form class="widget-form cc-form" (ngSubmit)="saveChanges()" ... | 57,859,420 | 3 | 6 | null | 2017-07-25 13:28:12.49 UTC | 9 | 2019-09-10 05:56:55.387 UTC | null | null | null | null | 1,859,954 | null | 1 | 16 | forms|angular|typescript|angular-components | 21,116 | <p>For future googlers,</p>
<p>I had a similar issue to this, albeit with fewer child components and after digging through @penleychan's aforementioned thread on the subject I found a little gem that solved this for me without the need to implement a custom directive.</p>
<pre><code>import { ControlContainer, NgForm ... |
15,929,686 | How to decode unicode HTML by JavaScript? | <p>How to use JavaScript to decode from:</p>
<pre><code>\u003cb\u003estring\u003c/b\u003e
</code></pre>
<p>to</p>
<pre><code><b>string</b>
</code></pre>
<p>(I searched in internet, there are some site with same question, such as:
<a href="https://stackoverflow.com/questions/4692882/javascript-html-decod... | 15,929,722 | 2 | 0 | null | 2013-04-10 15:08:19.83 UTC | 8 | 2021-08-10 20:37:15.443 UTC | 2017-05-23 12:02:03.663 UTC | null | -1 | null | 1,560,697 | null | 1 | 12 | javascript|unicode|decode | 41,615 | <pre><code>decodeURIComponent('\u003cb\u003estring\u003c/b\u003e');
// "<b>string</b>"
</code></pre>
<p>Edit - I would delete the above answer if I could.</p>
<p>The original question is a bit ambiguous.</p>
<p><code>console.log('\u003cb\u003estring\u003c/b\u003e');</code> will already yield <code><... |
15,648,711 | angular js adding two numbers issue | <p>I have this code using angular js:</p>
<pre><code><!DOCTYPE html >
<html>
<head>
<title>Untitled Page</title>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.min.js"></script>
<script type="text/javascript">... | 15,648,744 | 7 | 0 | null | 2013-03-26 22:36:20.46 UTC | null | 2017-03-13 10:14:57.657 UTC | null | null | null | null | 1,238,850 | null | 1 | 15 | javascript|angularjs | 47,511 | <p>If that is indeed the case then what is happening is the values that are being passed in for x and y are being treated as strings and concatenated. What you should do is convert them to numbers using <code>parseInt</code></p>
<pre><code>return parseInt($scope.x) + parseInt($scope.y);
</code></pre>
<p>or if you pre... |
15,521,451 | How to navigate in JSF? How to make URL reflect current page (and not previous one) | <p>I am currently learning JSF and was rather amazed and puzzled when I realized that whenever we use <code><h:form></code>, the standard behavior of JSF is to always show me the URL of the <em>previous</em> page in the browser, as opposed to the URL of the <em>current</em> page. </p>
<p>I understand that this h... | 15,523,045 | 1 | 1 | null | 2013-03-20 10:51:13.17 UTC | 51 | 2018-10-31 10:35:19.707 UTC | 2015-01-30 09:08:01.65 UTC | null | 157,882 | null | 1,290,182 | null | 1 | 59 | jsf|url|redirect|navigation | 48,478 | <p>Indeed, JSF as being a form based application targeted MVC framework submits the POST form to the very same URL as where the page with the <code><h:form></code> is been requested form. You can confirm it by looking at the <code><form action></code> URL of the generated HTML output. This is in web develop... |
15,952,663 | Find the PID of a process that uses a port on Windows | <p>My service crash on startup with the classic:</p>
<pre><code>java.rmi.server.ExportException: Listen failed on port: 9999
</code></pre>
<p>How can I find the process for killing it?</p> | 15,952,726 | 7 | 2 | null | 2013-04-11 15:21:17.447 UTC | 66 | 2019-10-26 17:58:41.97 UTC | 2019-04-06 16:52:15.053 UTC | null | 63,550 | null | 2,135,045 | null | 1 | 135 | port | 344,621 | <p>Just open a command shell and type (saying your port is 123456):</p>
<pre><code>netstat -a -n -o | find "123456"
</code></pre>
<p>You will see everything you need.</p>
<p>The headers are:</p>
<pre><code> Proto Local Address Foreign Address State PID
TCP 0.0.0.0:37 0.0.0... |
35,926,381 | Change highlight text color in Visual Studio Code | <p>Right now, it is a faint gray overlay, which is hard to see. Any way to change the default color?</p>
<p><a href="https://i.stack.imgur.com/qmrOL.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/qmrOL.jpg" alt="enter image description here"></a></p> | 35,929,462 | 8 | 5 | null | 2016-03-10 20:17:05.99 UTC | 63 | 2021-07-02 09:31:28.643 UTC | null | null | null | null | 2,128,937 | null | 1 | 213 | visual-studio-code | 122,549 | <p><strong>Update</strong>
<a href="https://stackoverflow.com/a/43605752/285212">See @Jakub Zawiślak's answer for VScode 1.12+</a></p>
<hr>
<p><strong>Old answer</strong></p>
<p>Visual Studio Code calls this selection highlighting and unfortunately, I don't think the color is customizable currently. Themes can cont... |
10,577,374 | Mysql command not found in OS X 10.7 | <p>I cant get my mysql to start on os x 10.7. It is located in <code>/usr/local/mysql/bin/mysql</code></p>
<p>I get command not found when I type <code>mysql --version</code> in the terminal.</p>
<p>I tried this <a href="https://stackoverflow.com/questions/8195418/cant-access-mysql-from-command-line-mac">can't ... | 10,577,432 | 17 | 4 | null | 2012-05-14 03:59:56.63 UTC | 77 | 2021-03-07 18:57:29.423 UTC | 2017-05-23 11:47:24.983 UTC | null | -1 | null | 1,022,672 | null | 1 | 198 | mysql | 478,878 | <p>This is the problem with your $PATH: </p>
<p><code>/usr/local//usr/local/mysql/bin/private/var/mysql/private/var/mysql/bin</code>. </p>
<p><code>$PATH</code> is where the shell searches for command files. Folders to search in need to be separated with a colon. And so you want <code>/usr/local/mysql/bin/</code> in ... |
10,810,798 | Cropping image with transparency in iPhone | <p>I am working on Jigsaw type of game where i have two images for masking,
I have implemented this code for masking</p>
<pre><code>- (UIImage*) maskImage:(UIImage *)image withMaskImage:(UIImage*)maskImage {
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
CGImageRef maskImageRef = [maskImage CGIma... | 10,846,014 | 1 | 5 | null | 2012-05-30 06:07:36.053 UTC | 17 | 2015-02-23 13:21:43.017 UTC | 2012-06-11 11:49:05.143 UTC | null | 392,924 | null | 392,924 | null | 1 | 23 | iphone|uiimage|transparency | 5,656 | <p><strong>UPDATE 2</strong></p>
<p>I became really curious to find a better way to create a Jigsaw puzzle, so I spent two weekends and created a demo project of <a href="https://github.com/GuntisTreulands/JigsawDemo" rel="noreferrer">Jigsaw puzzle</a>.</p>
<p>It contains:</p>
<ul>
<li>provide column/row count and i... |
13,762,992 | Log Structured Merge Tree in Hbase | <p>I am working on Hbase. I have query regarding how Hbase store the data in sorted order with LSM.</p>
<p>As per my understanding, Hbase use LSM Tree for data transfer in large scale data processing. when Data comes from client, it store in-memory sequentially first and than sort and store as B-Tree as Store file. Th... | 13,763,821 | 2 | 0 | null | 2012-12-07 12:20:16.457 UTC | 9 | 2017-02-22 11:10:38.813 UTC | 2012-12-07 12:38:40.25 UTC | null | 1,295,365 | null | 1,295,365 | null | 1 | 6 | hadoop|hbase|hive|hdfs | 14,622 | <p>You can take a look at this two articles that describe exactly what you want</p>
<p><a href="http://blog.cloudera.com/blog/2012/06/hbase-io-hfile-input-output/" rel="noreferrer">http://blog.cloudera.com/blog/2012/06/hbase-io-hfile-input-output/</a></p>
<p><a href="http://blog.cloudera.com/blog/2012/06/hbase-write-... |
13,295,600 | multiple one-to-many relations ResultSetExtractor | <p>Let's say I have an object with two different one-to-many relations. Much like:</p>
<p><code>Customer 1<->M Brands</code> and <code>Customer 1<->M Orders</code></p>
<p>And let's say that the my object <code>Customer</code> has two lists related to those two objects.</p>
<p>I've read this example:
<a h... | 13,583,889 | 4 | 8 | null | 2012-11-08 18:41:44.767 UTC | 11 | 2012-11-28 07:11:14.87 UTC | null | null | null | null | 930,928 | null | 1 | 8 | java|spring|jdbc|jdbctemplate|spring-jdbc | 30,230 | <p>From your question, I assume that you have three tables; Customer, Brands, Orders. If you want to fetch the Brands and Orders properties of the Customer to your customer object, where there is no relationship between Brands and Orders, what I suggest is to use a UNION query. Something like this:</p>
<pre><code>TBL_... |
13,614,157 | Get text of selected items in a ListBox | <p>I'm trying to show the selected items of listBox1 in a Message Box here's the code:</p>
<pre><code>int index;
string item;
foreach (int i in listBox1 .SelectedIndices )
{
index = listBox1.SelectedIndex;
item = listBox1.Items[index].ToString ();
groupids = item;
MessageBox.Show(groupids);
}
</code>... | 13,614,192 | 4 | 0 | null | 2012-11-28 20:52:07.22 UTC | 3 | 2018-10-02 16:22:45.243 UTC | 2012-11-28 20:54:04.313 UTC | null | 27,414 | null | 1,849,107 | null | 1 | 10 | c#|winforms | 81,231 | <p>The <code>i</code> in the foreach loop has the index you need. You're using <code>listBox1.SelectedIndex</code> which only has the first one. So item should be:</p>
<pre><code>item = listBox1.Items[i].ToString ();
</code></pre> |
13,410,874 | how to display background color in outlook 2010 html email? | <p>My problem is related to Microsoft Outlook 2010. Actually I want to publish my HTML newsletter in Outlook 2010, but the main problem which I am facing is styling problem it's not showing color and all when the newsletter is published in Outlook 2010. please help me out if you know how to set color and css style in O... | 13,410,985 | 5 | 1 | null | 2012-11-16 05:14:17.94 UTC | 6 | 2020-08-26 02:15:15.69 UTC | null | null | null | null | 1,828,621 | null | 1 | 29 | html|css|outlook-2010 | 66,075 | <p>This method works across email clients:</p>
<pre><code><table bgcolor="#3399ff" style="background:#3399ff;"><tr><td>test</td></tr></table>
</code></pre> |
13,325,519 | jQuery: trigger a hover event from another element | <p>When you hover over one <code><div></code>, I want an <code><a></code> on a separate part of the page to be "hovered" on also.</p>
<pre><code><div class="initiator">
</div>
<div>
<a class="receiver href="#">Touch the div and I get hovered!</a>
</div>
</code></pre>
... | 13,325,647 | 4 | 1 | null | 2012-11-10 19:50:46.383 UTC | 8 | 2014-12-26 20:30:24.027 UTC | null | null | null | null | 1,001,938 | null | 1 | 32 | javascript|jquery|html|hover|bind | 79,184 | <p>Try this:</p>
<pre><code>$('.initiator').on('mouseenter mouseleave', function(e) {
$('.receiver').trigger(e.type);
})
</code></pre>
<p>It will apply the same triggers for the receiver as the initiator receives for both mouseenter and mouseleave. Note that:</p>
<pre><code>.hover(over, out)
</code></pre>
<p>i... |
13,387,742 | Compare two objects with .equals() and == operator | <p>I constructed a class with one <code>String</code> field. Then I created two objects and I have to compare them using <code>==</code> operator and <code>.equals()</code> too. Here's what I've done:</p>
<pre><code>public class MyClass {
String a;
public MyClass(String ab) {
a = ab;
}
publi... | 13,387,787 | 16 | 4 | null | 2012-11-14 21:35:08.39 UTC | 35 | 2022-07-23 14:43:28.517 UTC | 2017-02-01 12:20:48.4 UTC | null | 4,823,977 | null | 1,798,371 | null | 1 | 90 | java|class|object|methods|equals | 423,959 | <p><code>==</code> compares object references, it checks to see if the two operands point to the same object (not <em>equivalent</em> objects, the <strong>same</strong> object).</p>
<p>If you want to compare strings (to see if they contain the same characters), you need to compare the strings using <code>equals</code>... |
13,604,720 | SQL Server database restore error: specified cast is not valid. (SqlManagerUI) | <p>I am using SQL Server 2008 R2 Standard (version 10.50.1600.1) for my production website and
SQL Server Express edition with Advanced Services (v10.50.1600.1) for my localhost as a database.</p>
<p>Few days back my SQL Server crashed and I had to install a new 2008 R2 Express version on my localhost. It worked fine... | 13,604,946 | 4 | 5 | null | 2012-11-28 12:07:02.16 UTC | 8 | 2018-06-20 10:08:21.12 UTC | 2014-09-24 06:02:35.037 UTC | null | 1,122,748 | null | 1,122,748 | null | 1 | 93 | sql-server|sql-server-2008|database-restore | 435,911 | <p>The GUI can be fickle at times. The error you got when using T-SQL is because you're trying to overwrite an existing database, but did not specify to overwrite/replace the existing database. The following might work:</p>
<pre><code>Use Master
Go
RESTORE DATABASE Publications
FROM DISK = 'C:\Publications_backup_20... |
13,433,799 | Why doesn't nodelist have forEach? | <p>I was working on a short script to change <code><abbr></code> elements' inner text, but found that <code>nodelist</code> does not have a <code>forEach</code> method. I know that <code>nodelist</code> doesn't inherit from <code>Array</code>, but doesn't it seem like <code>forEach</code> would be a useful metho... | 27,024,188 | 10 | 1 | null | 2012-11-17 19:05:47.697 UTC | 28 | 2020-07-15 00:01:24.513 UTC | 2016-12-25 09:17:47.077 UTC | null | 24,468 | null | 871,980 | null | 1 | 105 | javascript|arrays|dom|foreach | 71,852 | <h2>NodeList now has forEach() in all major browsers</h2>
<p>See <a href="https://developer.mozilla.org/en-US/docs/Web/API/NodeList/forEach" rel="noreferrer">nodeList forEach() on MDN</a>.</p>
<h2>Original answer</h2>
<p>None of these answers explain <em>why</em> NodeList doesn't inherit from Array, thus allowing it to... |
13,362,490 | Difference between Lookup() and Dictionary(Of list()) | <p>I'm trying to wrap my head around which data structures are the most efficient and when / where to use which ones.</p>
<p>Now, it could be that I simply just don't understand the structures well enough, but how is an <code>ILookup(of key, ...)</code> different from a <code>Dictionary(of key, list(of ...))</code>?</... | 13,362,570 | 6 | 1 | null | 2012-11-13 14:28:21.2 UTC | 38 | 2018-05-03 12:52:39.513 UTC | 2012-11-13 14:35:46.853 UTC | null | 1,159,478 | null | 1,693,085 | null | 1 | 209 | c#|.net|vb.net|linq | 76,587 | <p>Two significant differences:</p>
<ul>
<li><code>Lookup</code> is immutable. Yay :) (At least, I believe the concrete <code>Lookup</code> class is immutable, and the <code>ILookup</code> interface doesn't provide any mutating members. There <em>could</em> be other mutable implementations, of course.)</li>
<li>When y... |
3,319,805 | Detecting call state in iOS4 | <p>I would like to know if there is a possibility to detect if the user is in call from an application that is currently in background.</p>
<p>Or, receive a notification when the call is ended if the call was initiated from my app.</p>
<p>Or, even more than that - is there a possibility to detect which app is in fore... | 3,320,212 | 2 | 2 | null | 2010-07-23 15:42:29.197 UTC | 14 | 2016-06-06 02:45:00.283 UTC | 2012-01-24 12:35:53.86 UTC | null | 113,079 | null | 246,119 | null | 1 | 10 | iphone|ios4|core-telephony | 14,619 | <p>In <code>CTCallCenter</code>, there is a method, <code>callEventHandler</code> that you can pass a block that will get called when call events happen. In this block, you'll be passed a <code>CTCall</code> object, and can get the <code>callState</code>. So, you can get a notification when a call is initiated or ende... |
3,352,741 | Fortran assignment on declaration and SAVE attribute gotcha | <p>In fortran 95, if you assign a variable at declaration</p>
<pre><code>integer :: var = 0
</code></pre>
<p>it is equivalent to</p>
<pre><code>integer, save :: var = 0
</code></pre>
<p>and the variable is therefore preserved after routine execution (is equivalent to <code>static</code> in C speak) and does not get... | 3,353,485 | 2 | 3 | null | 2010-07-28 12:21:19.91 UTC | 10 | 2010-07-28 16:10:35.153 UTC | null | null | null | null | 78,374 | null | 1 | 21 | fortran | 5,744 | <p>I don't think that there is some rationale behind such behavior.</p>
<p>But as far as I know, Stefano, you used wrong terminology. In your code <strong>there is no assignment statement</strong> only variable (var) initialization using initialization expression (0).</p>
<pre><code>integer :: var = 0 ! type declarat... |
3,585,533 | Cucumber and Capybara, clicking a non-link or button element | <p>I am trying to test an inplace editor using Cucumber/Capybara/Selenium stack, but my problem is that the editor is activated by clicking a div and not a link or button. I can not seem to figure out how to get Capybara to do this. Is there a way of doing this?</p> | 3,889,673 | 2 | 0 | null | 2010-08-27 15:08:32.297 UTC | 12 | 2018-03-16 15:36:51.76 UTC | null | null | null | null | 134,482 | null | 1 | 46 | selenium|cucumber|integration-testing|webdriver|capybara | 17,112 | <p>You can click on an element via <a href="http://rdoc.info/github/jnicklas/capybara/master/Capybara/Node/Element#click-instance_method" rel="noreferrer"><code>Capybara::Element.click</code></a>. I add the following for this in my <code>web_steps.rb</code> to click on divs.</p>
<pre><code>When /^(?:|I )click within "... |
3,599,318 | Hibernate query.list() method is returning empty list instead of null value | <p>When there are no rows, both <code>query.list()</code> and <code>criteria.list()</code> are returning <em>empty</em> list instead of a <code>null</code> value.</p>
<p>What is the reason behind this?</p> | 3,599,343 | 2 | 1 | null | 2010-08-30 09:48:17.513 UTC | 9 | 2020-02-20 18:18:32.63 UTC | 2020-02-20 18:18:32.63 UTC | null | 814,702 | null | 324,900 | null | 1 | 51 | java|hibernate|collections|nullpointerexception|return-value | 51,320 | <p>The reason is not to force null checks in client code, in consistency with <a href="http://www.amazon.co.uk/Effective-Java-Second-Joshua-Bloch/dp/0321356683" rel="noreferrer">Effective Java 2nd Edition</a>, Item 43: <strong>Return empty arrays or collections, not nulls</strong>.</p>
<p>This makes the client code si... |
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