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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
4,854,446 | Save Accents in MySQL Database | <p><br/> I'm trying to save French accents in my database, but they aren't saved like they should in the DB.<br/>For example, a "é" is saved as "é".<br/>I've tried to set my files to "Unicode (utf-8)", the fields in the DB are "utf8_general_ci" as well as the DB itself.<br/>When I look at my data posted through AJAX w... | 8,780,302 | 9 | 0 | null | 2011-01-31 18:13:58.63 UTC | 9 | 2022-09-13 19:02:36.917 UTC | 2014-04-14 02:01:25.317 UTC | null | 857,004 | null | 585,106 | null | 1 | 27 | php|mysql|character-encoding|diacritics | 45,567 | <p>Personally I solved the same issue by adding after the <strong>MySQL connection code</strong>:</p>
<pre><code>mysql_set_charset("utf8");
</code></pre>
<p>or for mysqli:</p>
<pre><code>mysqli_set_charset($conn, "utf8");
</code></pre>
<p>or the mysqli OOP equivalent:</p>
<pre><code>$conn->set_charset("utf8");
... |
5,404,856 | How to disable touch input to all views except the top-most view? | <p>I have a view with multiple subviews. When a user taps a subview, the subview expands in size to cover most of the screen, but some of the other subviews are still visible underneath.</p>
<p>I want my app to ignore touches on the other subviews when one of the subviews is "expanded" like this. Is there a simple w... | 5,404,950 | 12 | 0 | null | 2011-03-23 11:56:56 UTC | 16 | 2021-08-16 15:42:57.507 UTC | 2013-08-07 11:17:38.547 UTC | null | 640,731 | null | 14,606 | null | 1 | 47 | iphone|ios|cocoa-touch|uiview|user-interaction | 84,967 | <p>Hope this help...</p>
<pre><code>[[yourSuperView subviews]
makeObjectsPerformSelector:@selector(setUserInteractionEnabled:)
withObject:[NSNumber numberWithBool:FALSE]];
</code></pre>
<p>which will disable userInteraction of a view's immediate subviews..Then give userInteraction to the only view you wanted</p... |
5,553,352 | How do I check if file exists in Makefile so I can delete it? | <p>In the clean section of my <code>Makefile</code> I am trying to check if the file exists before deleting permanently. I use this code but I receive errors.</p>
<p>What's wrong with it?</p>
<pre class="lang-sh prettyprint-override"><code> if [ -a myApp ]
then
rm myApp
fi
</code></pre>
<p>I get this error messa... | 47,828,799 | 16 | 4 | null | 2011-04-05 14:17:35.547 UTC | 29 | 2022-06-04 02:12:05.44 UTC | 2022-03-29 07:25:32.903 UTC | null | 2,226,755 | null | 245,416 | null | 1 | 175 | makefile | 256,735 | <p>The second top answer mentions <code>ifeq</code>, however, it fails to mention that this <code>ifeq</code> must be at the same indentation level in the makefile as the name of the target, e.g., to download a file only if it doesn't currently exist, the following code could be used:</p>
<pre class="lang-Makefile pret... |
5,548,893 | jQuery DataTables: Delay search until 3 characters been typed OR a button clicked | <p>Is there please an option to start the search only after 3 characters have been typed in?</p>
<p>I have written a PHP-script for colleagues displaying 20,000 entries and they complain, that when typing a word, the first few letters cause everything to freeze.</p>
<p>An alternative would be to have the search to be... | 23,897,722 | 24 | 1 | null | 2011-04-05 07:59:48.887 UTC | 33 | 2022-08-08 00:32:17.713 UTC | 2017-11-16 08:00:45.69 UTC | null | 165,071 | null | 165,071 | null | 1 | 88 | jquery|datatables | 85,794 | <p>Solution for version 1.10 -</p>
<p>After looking here for a complete answer and not finding one, I've written this (utilizing code from the documentation, and a few answers here).</p>
<p>The below code works to delay searching until at least 3 characters are entered:</p>
<pre><code>// Call datatables, and return ... |
16,934,663 | Displaying images from MySQL database in JSF datatable | <p>I have MySQL database which stores images in a <code>blob</code> column. I would like to show them in a PrimeFaces <code><p:dataTable></code>. How can I achieve this?</p> | 16,940,909 | 2 | 4 | null | 2013-06-05 08:08:20.397 UTC | 8 | 2015-07-18 08:24:28.023 UTC | 2013-07-13 13:08:57.337 UTC | null | 157,882 | null | 2,436,180 | null | 1 | 4 | mysql|image|jsf|primefaces|datatable | 13,932 | <p>You can use <a href="http://www.primefaces.org/showcase/ui/dynamicImage.jsf" rel="nofollow noreferrer"><code><p:graphicImage></code></a> to display images stored in a <code>byte[]</code>, regardless of the <code>byte[]</code> source (DB, disk file system, network, etc). Simplest example is:</p>
<pre class="la... |
12,249,136 | ReferenceError: google is not defined | <p>I use google map's api in my website to show couple of locations. Google Maps is working just fine in my local solution but not in my website. I changed this source</p>
<pre><code><script type="text/javascript" src="http://maps.google.com/maps/api/js?v=3.5&sensor=false"> </script>
</code></pre>
<p>... | 12,284,981 | 4 | 0 | null | 2012-09-03 13:47:54.923 UTC | 3 | 2021-07-05 14:13:02.13 UTC | 2012-09-04 12:27:16.623 UTC | null | 1,218,067 | null | 1,218,067 | null | 1 | 14 | google-maps | 106,790 | <p>Owing to the fact that my website uses <strong>https</strong> for the connection, I can not use <a href="http://maps.google.com/maps/api/js?sensor=false" rel="nofollow noreferrer">http://maps.google.com/maps/api/js?sensor=false</a>. When I debug the whole page, this link says: Warning : <strong>The page index.html r... |
12,504,954 | How to start an Intent from a ResolveInfo | <p>I'm trying to make a custom launcher for android, and I'm trying to figure out how to launch a different application form mine. I figured the way to do it was intents, and I've found a post on it here:</p>
<p><a href="https://stackoverflow.com/questions/2780102/open-another-application-from-your-own-intent">Open a... | 12,511,404 | 2 | 0 | null | 2012-09-20 01:20:26.767 UTC | 8 | 2013-06-02 23:08:00.327 UTC | 2017-05-23 12:02:26.147 UTC | null | -1 | null | 1,123,960 | null | 1 | 26 | android|android-intent|launcher | 13,315 | <p>Given a <code>ResolveInfo</code> named <code>launchable</code>:</p>
<pre><code>ActivityInfo activity=launchable.activityInfo;
ComponentName name=new ComponentName(activity.applicationInfo.packageName,
activity.name);
Intent i=new Intent(Intent.ACTION_MAIN);
i.addCategory(Intent... |
12,196,756 | Significance level added to matrix correlation heatmap using ggplot2 | <p>I wonder how one can add another layer of important and needed complexity to a matrix correlation heatmap like for example the p value after the manner of the significance level stars in addition to the R2 value (-1 to 1)?<br>
It was NOT INTENDED in this question to put significance level stars OR the p values as te... | 12,226,215 | 3 | 5 | null | 2012-08-30 12:22:25.6 UTC | 20 | 2019-11-10 21:50:49.967 UTC | 2018-02-23 00:43:09.5 UTC | null | 8,270,343 | null | 1,288,722 | null | 1 | 30 | r|ggplot2|correlation|heatmap|significance | 21,988 | <p>This is just an attempt to enhance towards the final solution, I plotted the stars here as indicator of the solution, but as I said the aim is to find a graphical solution that can speak better than the stars. I just used geom_point and alpha to indicate significance level but the problem that the NAs (that includes... |
12,412,324 | Python class returning value | <p>I'm trying to create a class that returns a value, not self.</p>
<p>I will show you an example comparing with a list:</p>
<pre><code>>>> l = list()
>>> print(l)
[]
>>> class MyClass:
>>> pass
>>> mc = MyClass()
>>> print mc
<__main__.MyClass instance at... | 12,412,839 | 6 | 9 | null | 2012-09-13 18:14:08.44 UTC | 18 | 2021-02-18 17:28:23.78 UTC | 2015-05-12 19:01:40.883 UTC | null | 562,769 | null | 1,669,442 | null | 1 | 34 | python|class|return | 237,308 | <p>If what you want is a way to turn your class into kind of a list without subclassing <code>list</code>, then just make a method that returns a list:</p>
<pre><code>def MyClass():
def __init__(self):
self.value1 = 1
self.value2 = 2
def get_list(self):
return [self.value1, self.value2... |
12,162,657 | Possible to print more than 100 rows of a data.table? | <p>The data.table has a nice feature that suppresses output to the head and tail of the table.</p>
<p>Is it possible to view / print more than 100 rows at once?</p>
<pre><code>library(data.table)
## Convert the ubiquitous "iris" data to a data.table
dtIris = as.data.table(iris)
## Printing 100 rows is possible
dtIris... | 12,162,762 | 5 | 1 | null | 2012-08-28 15:31:50.347 UTC | 11 | 2022-07-17 20:37:17.753 UTC | 2022-07-17 20:37:17.753 UTC | null | 1,161,484 | null | 573,778 | null | 1 | 51 | r|printing|data.table|output-formatting | 48,168 | <p>The print method of <code>data.table</code> has an argument <code>nrows</code>:</p>
<pre><code>args(data.table:::print.data.table)
function (x, nrows = 100L, digits = NULL, ...)
</code></pre>
<p>You can use this to control how many rows get printed:</p>
<pre><code>print(dtIris, nrow=105)
.....
99: 5.1 ... |
12,125,880 | changing default x range in histogram matplotlib | <p>I would like to change the default x range for the histogram plot. The range of the data is from 7 to 12. However, by default the histogram starts right at 7 and ends at 13. I want it to start at 6.5 and end at 12.5. However, the ticks should go from 7 to 12.How do I do it? </p>
<pre><code>import asciitable
import... | 12,126,513 | 3 | 0 | null | 2012-08-25 21:42:57 UTC | 9 | 2019-07-11 14:03:56.483 UTC | null | null | null | null | 1,625,098 | null | 1 | 53 | python|matplotlib|histogram|xrange | 174,756 | <pre><code>plt.hist(hmag, 30, range=[6.5, 12.5], facecolor='gray', align='mid')
</code></pre> |
3,592,212 | Beginning Haskell - getting "not in scope: data constructor" error | <p>I'm going through the problems in the Haskell O'Reilly book. The problem I am working on is </p>
<pre><code>Using the binary tree type that we defined earlier in this chapter,
write a function that will determine the height of the tree. The height
is the largest number of hops from the root to an Empty. For examp... | 3,592,233 | 3 | 0 | null | 2010-08-28 19:56:14.567 UTC | 5 | 2014-07-11 20:41:43.027 UTC | 2011-06-20 16:22:11.487 UTC | null | 329,700 | null | 329,700 | null | 1 | 22 | haskell|scope | 46,888 | <p>Change</p>
<pre><code>height (Tree node left right)
</code></pre>
<p>to</p>
<pre><code>height (Node node left right)
</code></pre>
<p>That means the pattern matching works on the constructors of the <a href="http://en.wikipedia.org/wiki/Algebraic_data_type" rel="noreferrer">algebraic data type</a> (ADT). <code>... |
22,845,574 | How to dynamically do filtering in Java 8? | <p>I know in Java 8, I can do filtering like this :</p>
<pre><code>List<User> olderUsers = users.stream().filter(u -> u.age > 30).collect(Collectors.toList());
</code></pre>
<p>But what if I have a collection and half a dozen filtering criteria, and I want to test the combination of the criteria ?</p>
<p... | 22,855,465 | 2 | 5 | null | 2014-04-03 18:07:00.94 UTC | 33 | 2014-04-08 00:17:47.477 UTC | 2014-04-06 21:28:08.267 UTC | null | 32,834 | null | 32,834 | null | 1 | 48 | java|lambda|filtering|java-8 | 26,023 | <p>Interesting problem. There are several things going on here. No doubt this could be solved in less than half a page of Haskell or Lisp, but this is Java, so here we go....</p>
<p>One issue is that we have a variable number of filters, whereas most of the examples that have been shown illustrate fixed pipelines.</p>... |
20,828,179 | Angular unit-test controllers - mocking service inside controller | <p>I have the following situation:</p>
<p><strong>controller.js</strong></p>
<pre><code>controller('PublishersCtrl',['$scope','APIService','$timeout', function($scope,APIService,$timeout) {
APIService.get_publisher_list().then(function(data){
});
}));
</code></pre>
<p><strong>controllerSpec.js</st... | 20,830,042 | 1 | 3 | null | 2013-12-29 17:43:24.637 UTC | 13 | 2016-07-21 17:11:18.93 UTC | 2015-03-11 12:25:55.343 UTC | null | 345,944 | null | 345,944 | null | 1 | 20 | unit-testing|angularjs|karma-runner|karma-jasmine | 27,603 | <p>There are two ways (or more for sure).</p>
<p>Imagining this kind of service (doesn't matter if it is a factory):</p>
<pre><code>app.service('foo', function() {
this.fn = function() {
return "Foo";
};
});
</code></pre>
<p>With this controller:</p>
<pre><code>app.controller('MainCtrl', function($sco... |
22,227,675 | Why NuGet adds app.config with assemblyBinding to LIBRARY projects during a NuGet package update? | <p>Isn't this information necessary only in the executable's project?</p>
<p>How to disable this file creation? </p>
<p>NuGet 2.8</p>
<p><strong>EDIT</strong></p>
<p>Library projects were exceptions in NuGet 2.7, behavior changed in 2.8 by fixing this issue: <a href="http://nuget.codeplex.com/workitem/3827" rel="n... | 22,228,738 | 3 | 5 | null | 2014-03-06 14:41:08.19 UTC | 7 | 2020-04-23 18:22:02.333 UTC | 2018-05-09 21:54:24.213 UTC | null | 1,775,528 | null | 2,755,656 | null | 1 | 59 | nuget | 20,667 | <p>Assembly binding redirects are as valid in a class library as they are in executable projects. </p>
<p>Think about this; when building your application, how will the compiler know which version of referenced assemblies to use (for the class libraries)? </p>
<p>Often this will work just fine, without the redirects,... |
10,921,645 | SSIS How to get part of a string by separator | <p>I need an SSIS expression to get the left part of a string before the separator, and then put the new string in a new column. I checked in derived column, it seems no such expressions. <code>Substring</code> could only return string part with fixed length. </p>
<p>For example, with separator string <code>-</code> :... | 10,929,122 | 4 | 1 | null | 2012-06-06 20:21:29.7 UTC | 1 | 2019-03-24 20:27:57.987 UTC | 2019-03-24 20:27:57.987 UTC | null | 7,031,230 | null | 1,317,602 | null | 1 | 16 | sql-server|ssis|expression|etl | 79,929 | <p>of course you can:</p>
<p><img src="https://i.stack.imgur.com/iG6Tz.jpg" alt="enter image description here"></p>
<p>just configure your derived columns like this:</p>
<p><img src="https://i.stack.imgur.com/5QGAB.jpg" alt="enter image description here"></p>
<p>Here is the expression to make your life easier:</p>
... |
10,982,167 | Find an XElement with a certain attribute name and value with LINQ | <pre><code>XDocument xDocument = XDocument.Load("...");
IEnumerable<XElement> elements = xDocument
.Element("lfm")
.Element("events")
.Elements("event");
try
{
foreach (XElement elm in elements)
{
comm.Parameters.AddWithValue("extID", elm.Element("id").Value ?? "");
... | 10,982,276 | 2 | 2 | null | 2012-06-11 14:33:21.567 UTC | 2 | 2017-10-02 12:43:07.657 UTC | 2015-02-10 22:54:16.997 UTC | null | 3,204,551 | null | 813,523 | null | 1 | 18 | c#|xml|linq|xelement | 45,496 | <p>Try</p>
<pre><code>XElement result = elm.Descendants("image")
.FirstOrDefault(el => el.Attribute("size") != null &&
el.Attribute("size").Value == "large");
if (result != null) {
process result.Value ...
}
</code></pre>
<p>Starting with C#6.0 (VS 2015), you can write:</p>
... |
11,128,086 | Simple Popularity Algorithm | <h2>Summary</h2>
<p>As Ted Jaspers wisely pointed out, the methodology I described in the original proposal back in 2012 is actually a special case of an <a href="https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average" rel="nofollow noreferrer">exponential moving average</a>. The beauty of this approa... | 51,670,966 | 5 | 2 | null | 2012-06-20 20:57:53.987 UTC | 16 | 2019-09-10 07:15:17.6 UTC | 2019-09-10 07:15:17.6 UTC | null | 1,060,679 | null | 1,060,679 | null | 1 | 22 | algorithm|popularity | 11,594 | <p>The proposed algorithm is a good approach, and is a special case of an <a href="https://en.wikipedia.org/wiki/Moving_average" rel="nofollow noreferrer">Exponential Moving Average</a> where alpha=0.5:</p>
<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="sni... |
10,949,730 | Is it possible to for SQL Output clause to return a column not being inserted? | <p>I've made some modifications to my database and I need to migrate the old data to the new tables. For that, I need to fill a table (ReportOptions) taking the data from the original table (Practice), and fill a second intermediate table (PracticeReportOption).</p>
<pre><code>ReportOption (ReportOptionId int PK, fiel... | 10,950,418 | 2 | 2 | null | 2012-06-08 13:23:46.07 UTC | 55 | 2020-01-19 01:15:42.14 UTC | 2019-06-21 09:03:55.603 UTC | null | 133 | null | 1,019,193 | null | 1 | 153 | sql|sql-server | 54,235 | <p>You can do this by using <code>MERGE</code> instead of insert:</p>
<p>so replace this</p>
<pre><code>INSERT INTO ReportOption (field1, field2...)
OUTPUT @ReportOption.PracticeId, --> this is the field I don't know how to get
inserted.ReportOptionId
INTO @PracticeReportOption (PracticeId, ReportOptionId... |
13,218,975 | error mysql : Got a packet bigger than 'max_allowed_packet' bytes | <p>for import mysql database give me this error :</p>
<pre><code>$ `mysql -u user -p password zxc_db < zxc.sql`
ERROR 1153 (08S01) at line 96: Got a packet bigger than 'max_allowed_packet' bytes
</code></pre>
<p>Please give me a best solution to solve it ?
tanx .</p> | 13,219,033 | 1 | 2 | null | 2012-11-04 13:33:56.393 UTC | 2 | 2013-09-12 17:01:04.59 UTC | null | null | null | null | 1,624,348 | null | 1 | 7 | mysql|mysqldump|mysql-error-1064 | 40,252 | <p>the best solution is " change mysql.cnf "
debian :
/etc/mysql/mysql.cnf
change this line ==> <code>max_allowed_packet = 16M</code>
to : <code>max_allowed_packet = 128M</code></p>
<p>or
add --max_allowed_packet=128M to your mysqldump command.</p>
<pre><code>mysql --max_allowed_packet=128M -u user -ppass... |
12,816,075 | JavaFx GridPane - how to center elements | <p>I have a <code>GridPane</code> filled with 1-letter-labels.</p>
<p>Here is an image:</p>
<p><a href="https://i.stack.imgur.com/T5npB.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/T5npB.jpg" alt="image"></a>
</p>
<p>Here is the code:</p>
<pre><code>int charSpacing = 1;
int charsInWidth = 28;
... | 12,816,318 | 3 | 0 | null | 2012-10-10 09:25:41.473 UTC | 2 | 2019-08-25 13:24:46.67 UTC | 2019-08-25 13:24:46.67 UTC | null | 4,751,173 | null | 1,347,198 | null | 1 | 11 | java|user-interface|positioning|javafx-2|gridpanel | 56,311 | <p>oh, that was easy. i did the alignment on the wrong place. adding this will do the job:</p>
<pre><code>tmp[currArrPos].setAlignment(Pos.CENTER);
</code></pre>
<p>thanks anyway.</p> |
13,050,003 | Apply function to pandas DataFrame that can return multiple rows | <p>I am trying to transform DataFrame, such that some of the rows will be replicated a given number of times. For example:</p>
<pre><code>df = pd.DataFrame({'class': ['A', 'B', 'C'], 'count':[1,0,2]})
class count
0 A 1
1 B 0
2 C 2
</code></pre>
<p>should be transformed to:</p>
<pre><co... | 13,052,373 | 4 | 2 | null | 2012-10-24 13:14:11.267 UTC | 9 | 2020-01-01 12:55:13.99 UTC | 2019-01-04 11:05:12 UTC | null | 4,909,087 | null | 74,342 | null | 1 | 21 | python|pandas|dataframe | 21,001 | <p>You could use groupby:</p>
<pre><code>def f(group):
row = group.irow(0)
return DataFrame({'class': [row['class']] * row['count']})
df.groupby('class', group_keys=False).apply(f)
</code></pre>
<p>so you get</p>
<pre><code>In [25]: df.groupby('class', group_keys=False).apply(f)
Out[25]:
class
0 A
0 ... |
13,082,149 | In Xcode project target build settings, What is Mach-O Type? | <p>After getting tired of numerous Match-O linker error, I want to know that this thing means. Instead of trial and error solution, I would like to know the concept behind these things. Specifically I want to know the difference between :</p>
<ol>
<li>Executable</li>
<li>Dynamic Library</li>
<li>Bundle</li>
<li>Static... | 13,082,437 | 2 | 1 | null | 2012-10-26 06:50:58.953 UTC | 13 | 2019-09-01 08:55:58.507 UTC | null | null | null | null | 341,800 | null | 1 | 34 | objective-c|ios|xcode|linker|llvm | 17,353 | <p><a href="http://en.wikipedia.org/wiki/Mach-O" rel="noreferrer">Mach-O</a>, short for Mach object file format, is a file format for executables, object code, shared libraries, dynamically-loaded code, and core dumps. For unix users this is like <code>a.out</code> but with improvements. This is the format used in Mac ... |
12,758,088 | Installer and Updater for a python desktop application | <p>I am building a desktop app with python and packaging it to an exe with Pyinstaller.
I would like to ship my application with an installer and also provide automatic and silent updates to the software like Google Chrome, Dropbox or Github for Windows does.</p>
<p>I have found the following software to be able to do... | 12,823,983 | 4 | 4 | null | 2012-10-06 08:25:06.157 UTC | 18 | 2015-07-18 03:41:21.073 UTC | 2012-10-06 10:20:11.403 UTC | null | 19,929 | null | 19,929 | null | 1 | 39 | python|windows|nsis|auto-update|pyinstaller | 10,770 | <p>There is a suite of tools from the cloudmatrix guys that addresses that problem. </p>
<p><a href="http://pypi.python.org/pypi/esky">esky</a> is an auto-update framework for frozen apps that is compatible with the common python "packaging" frameworks. <a href="http://pypi.python.org/pypi/signedimp/0.3.2">signedimp</... |
12,765,833 | Counting the number of True Booleans in a Python List | <p>I have a list of Booleans:</p>
<pre><code>[True, True, False, False, False, True]
</code></pre>
<p>and I am looking for a way to count the number of <code>True</code> in the list (so in the example above, I want the return to be <code>3</code>.) I have found examples of looking for the number of occurrences of sp... | 12,765,840 | 8 | 0 | null | 2012-10-07 03:12:41.943 UTC | 15 | 2020-04-13 04:10:18.637 UTC | 2015-06-01 11:23:16.853 UTC | null | 1,173,112 | null | 1,702,140 | null | 1 | 187 | python|list|boolean|counting | 208,429 | <p><code>True</code> is equal to <code>1</code>.</p>
<pre><code>>>> sum([True, True, False, False, False, True])
3
</code></pre> |
16,638,813 | javax.security.auth.login.LoginException: No LoginModules configured for SomeLogin | <p>Well I'm trying to create JAAS authentication for my Servlet (running on Tomcat 7 in Eclipse), but I'm getting this error.</p>
<p>He're's the complete stack trace:
'`</p>
<pre><code>INFO: Starting Servlet Engine: Apache Tomcat/7.0.32
Geg 19, 2013 9:53:08 PM org.apache.coyote.AbstractProtocol start
INFO: Starting P... | 16,643,919 | 4 | 2 | null | 2013-05-19 19:53:30.097 UTC | 1 | 2015-07-28 19:47:51.637 UTC | 2013-05-20 10:07:35.057 UTC | null | 1,281,120 | null | 1,281,120 | null | 1 | 19 | java|eclipse|authentication|tomcat|jaas | 70,819 | <p>According to <a href="http://tomcat.apache.org/tomcat-7.0-doc/realm-howto.html#JAASRealm">http://tomcat.apache.org/tomcat-7.0-doc/realm-howto.html#JAASRealm</a></p>
<p>You should set up a login.config file for Java and tell Tomcat where to find it by specifying its location to the JVM, for instance by setting the e... |
10,083,399 | Change iframe attribute with jquery | <p>I have something like so:</p>
<pre><code> <iframe id="frame" width="200" height="150"
src="http://www.youtube.com/embed/GiZGEFBGgKU?rel=0&
amp&iv_load_policy=3;autoplay=1" frameborder="0" allowfullscreen></iframe>
</code></pre>
<p>And I want to change the width and height using jque... | 10,083,740 | 5 | 0 | null | 2012-04-10 05:14:52.157 UTC | 2 | 2018-04-04 21:25:20.143 UTC | null | null | null | null | 984,734 | null | 1 | 13 | javascript|jquery | 42,590 | <p>As Sarfraz already pointed out, the correct way to set the attribute for a jquery selector object is by using the <code>attr("attrName", "attrVal")</code>. The reason the <code>setAttribute</code> didn't work is something worth explaining, as I've hit my head against this point on more than one occasion:</p>
<p>Wh... |
10,242,766 | atos and dwarfdump won't symbolicate my address | <p>I received a crash report via AirBrake.io that isn't symbolicated. Since the crash report is not in exactly the same format as an Apple crashlog I can't just drop it on XCode as usual, so I took the exact same build from my XCode archive tried to symbolicate it on the commandline. With the following result:</p>
<pr... | 10,280,230 | 6 | 0 | null | 2012-04-20 08:30:16.257 UTC | 24 | 2018-04-11 12:44:22.6 UTC | null | null | null | null | 586,489 | null | 1 | 14 | ios|ipad|dwarf|symbolicate|airbrake | 15,555 | <p>First of all check if the dSYM is really the correct one for that app:</p>
<pre><code>dwarfdump --uuid kidsapp.app/kidsapp
dwarfdump --uuid kidsapp.app.dSYM
</code></pre>
<p>Both should return the same result.</p>
<p>Next check if the dSYM has any valid content</p>
<pre><code>dwarfdump --all kidsapp.app.dSYM
</c... |
9,717,159 | Get iOS iTunes App Store ID of an app itself? | <p>Could an iOS app get the iTunes link of itself? Is there an API for this?</p> | 11,626,157 | 3 | 2 | null | 2012-03-15 09:39:57.06 UTC | 15 | 2020-08-07 10:16:44.03 UTC | 2020-08-07 10:16:44.03 UTC | null | 41,948 | null | 41,948 | null | 1 | 26 | ios|api|app-store|itunes | 48,793 | <p>Here is the answer.</p>
<ol>
<li>The app requests <a href="http://itunes.apple.com/lookup?bundleId=com.clickgamer.AngryBirds" rel="noreferrer">http://itunes.apple.com/lookup?bundleId=com.clickgamer.AngryBirds</a></li>
<li>Find the <code>"version": "2.1.0"</code> and <code>"trackId": 343200656</code> in the JSON res... |
9,959,928 | Double quotes vs single quotes in JavaScript | <blockquote>
<p><strong>Possible Duplicate:</strong><br>
<a href="https://stackoverflow.com/questions/242813/when-to-use-double-or-single-quotes-in-javascript">When to Use Double or Single Quotes in JavaScript</a><br>
<a href="https://stackoverflow.com/questions/8974026/are-there-differences-between-and">Are ther... | 9,959,952 | 4 | 0 | null | 2012-03-31 21:39:31.287 UTC | 5 | 2017-05-01 16:00:52.69 UTC | 2017-05-23 10:31:39.507 UTC | null | -1 | null | 336,423 | null | 1 | 41 | javascript|syntax|semantics | 40,336 | <p>The difference is that you don't need to escape single quotes in double quotes, or double quotes in single quotes. That is the only difference, if you do not count the fact that you must hold the Shift key to type <code>"</code>.</p> |
9,766,608 | zipWith analogue in Python? | <p>What is the analogue of Haskell's <a href="http://hackage.haskell.org/packages/archive/base/latest/doc/html/Prelude.html#v:zipWith" rel="noreferrer">zipWith</a> function in Python?</p>
<pre><code>zipWith :: (a -> b -> c) -> [a] -> [b] -> [c]
</code></pre> | 9,766,647 | 6 | 2 | null | 2012-03-19 07:48:12.057 UTC | 8 | 2017-08-24 20:54:56.943 UTC | 2012-03-19 08:23:44.61 UTC | null | 989,121 | null | 784,533 | null | 1 | 55 | python|haskell | 14,950 | <p>You can create yours, if you wish, but in Python we mostly do </p>
<pre><code>list_c = [ f(a,b) for (a,b) in zip(list_a,list_b) ]
</code></pre>
<p>as Python is not inherently functional. It just happens to support a few convenience idioms. </p> |
9,682,206 | Groovy different results on using equals() and == on a GStringImpl | <p>According to the <a href="http://groovy-lang.org/style-guide.html#_equals_and_code_code" rel="nofollow noreferrer">Groovy docs</a>, the <code>==</code> is just a "clever" <code>equals()</code> as it also takes care of avoiding <code>NullPointerException</code>:</p>
<blockquote>
<p>Java’s <code>==</code> is... | 9,682,610 | 3 | 0 | null | 2012-03-13 10:24:03.913 UTC | 9 | 2022-03-31 14:18:15.823 UTC | 2021-02-10 21:52:26.477 UTC | null | 1,108,305 | null | 849,775 | null | 1 | 62 | groovy|operator-overloading|equals|gstring | 58,266 | <p>Nice question, the surprising thing about the code above is that</p>
<pre><code>println "${'test'}".equals('test')
</code></pre>
<p>returns <code>false</code>. The other line of code returns the expected result, so let's forget about that.</p>
<h2>Summary</h2>
<pre><code>"${'test'}".equals('test')
</code></pre>
... |
9,909,086 | Multiply TimeSpan in .NET | <p>How do I multiply a TimeSpan object in C#? Assuming the variable <code>duration</code> is a <a href="http://msdn.microsoft.com/en-us/library/system.timespan.aspx" rel="noreferrer">TimeSpan</a>, I would like, for example</p>
<pre><code>duration*5
</code></pre>
<p>But that gives me an error "operator * cannot be app... | 9,909,126 | 9 | 0 | null | 2012-03-28 13:59:53.667 UTC | 6 | 2021-12-22 20:55:51.547 UTC | 2013-01-11 16:36:37.927 UTC | null | 284,795 | null | 284,795 | null | 1 | 95 | c#|.net|date|time|timespan | 29,408 | <p><a href="http://www.blackwasp.co.uk/TimespanMultiplication.aspx">From this article</a></p>
<pre><code>TimeSpan duration = TimeSpan.FromMinutes(1);
duration = TimeSpan.FromTicks(duration.Ticks * 12);
Console.WriteLine(duration);
</code></pre> |
7,821,361 | How to write Pagination logic? | <p>Can anyone provide some idea/logic to write the pagination logic for the search page i am working on?
The information i have is <strong>total number of pages</strong> for that search- <strong>10 records per page</strong> also i am been sent the both the previous and next page number(no problem writing the logic all... | 7,822,000 | 3 | 5 | null | 2011-10-19 12:33:18.18 UTC | 12 | 2017-04-05 04:11:29.07 UTC | 2011-10-19 12:46:19.667 UTC | null | 724,238 | null | 724,238 | null | 1 | 8 | java|pagination|velocity | 71,823 | <p>Here is how I would implement it:
It is generally a good idea to create a Filter class that filters data and contains pagination related information for you. I use something like this:</p>
<pre><code>public abstract class Filter{
/** Member identifier for the current page number */
private int currentPag... |
11,648,748 | Mount Android emulator images | <p>I am trying to analyse Android malware on an emulator with Android 2.1. I want to analyze the files permissions and fingerprints after the execution of the suspicious app. I know, I can use the <code>adb shell</code> to get this information, but I think I can't trust the information after the execution of e.g. a roo... | 12,282,909 | 3 | 0 | null | 2012-07-25 11:31:17.957 UTC | 9 | 2021-03-22 15:07:00.11 UTC | 2021-03-22 14:09:47.527 UTC | null | 340,175 | null | 1,136,474 | null | 1 | 15 | android|image|emulation|mount | 21,730 | <p>You've already answered your own question but I'll expand a bit.
The Android sdk comes with system images, for example:</p>
<pre><code>$ cd android-sdk-linux/system-images/android-15/armeabi-v7a/
$ ls *.img
ramdisk.img system.img userdata.img
$ cd ~/.android/avd/<img name>.avd/
$ ls *.img
cache.img sdcard... |
11,487,646 | Intellij Idea does not find my android device | <p>Hi I want to do some test app that uses sound recording, but it doesn't work in the emulator. I need to test it on my phone but every time I change the option to use USB, it never detects my Wildfire S ... which is connected and in USB debugging mode.</p>
<p>It says "No USB Device Found".</p>
<p>Using 11.1.2</p>
... | 11,488,139 | 8 | 2 | null | 2012-07-14 21:51:28.713 UTC | 1 | 2020-05-29 14:38:22.593 UTC | null | null | null | null | 966,823 | null | 1 | 17 | android|debugging|intellij-idea|adb | 51,285 | <p>Problem was solved by installing HTC Sync it installed the correct driver and allowed me to detect the device.</p> |
11,979,156 | Mobile Safari back button | <p>The issue I've found is very similar to <a href="https://stackoverflow.com/questions/24046/the-safari-back-button-problem">this question</a>, except that Safari on desktops seems to have resolved the issue. Essentially, the issue is this: when a client is browsing on mobile safari and the page executes a javascript ... | 12,652,160 | 1 | 1 | null | 2012-08-16 00:32:29.697 UTC | 21 | 2020-06-29 12:39:42.343 UTC | 2020-06-29 12:39:42.343 UTC | null | 619,978 | null | 1,124,703 | null | 1 | 37 | javascript|safari | 34,205 | <p>This is caused by <a href="https://developer.mozilla.org/en-US/docs/Using_Firefox_1.5_caching" rel="noreferrer">back-forward cache</a>. It is supposed to save complete state of page when user navigates away. When user navigates back with back button page can be loaded from cache very quickly. This is different from ... |
11,865,195 | Using If/Else on a data frame | <p>I have a data set which looks something like</p>
<pre><code>data<-c(0,1,2,3,4,2,3,1,4,3,2,4,0,1,2,0,2,1,2,0,4)
frame<-as.data.frame(data)
</code></pre>
<p>I now want to create a new variable within this data frame. If the column "data" reports a number of 2 or more, I want it to have "2" in that row, and if ... | 11,865,283 | 2 | 1 | null | 2012-08-08 13:07:37.233 UTC | 12 | 2018-07-26 10:42:27.353 UTC | 2017-05-23 12:34:24.807 UTC | null | -1 | null | 1,545,812 | null | 1 | 40 | r | 151,927 | <p>Use <code>ifelse</code>:</p>
<pre><code>frame$twohouses <- ifelse(frame$data>=2, 2, 1)
frame
data twohouses
1 0 1
2 1 1
3 2 2
4 3 2
5 4 2
...
16 0 1
17 2 2
18 1 1
19 2 2
20 0 1
21 4 ... |
11,523,918 | Start a Function at Given Time | <p>How can I run a function in <em>Python</em>, at a given time?</p>
<p>For example:</p>
<pre><code>run_it_at(func, '2012-07-17 15:50:00')
</code></pre>
<p>and it will run the function <code>func</code> at 2012-07-17 15:50:00.</p>
<p>I tried the <a href="http://docs.python.org/library/sched.html#scheduler-objects" ... | 11,524,152 | 9 | 5 | null | 2012-07-17 13:49:25.277 UTC | 29 | 2022-01-29 23:01:27.477 UTC | 2022-01-29 23:01:27.477 UTC | null | 3,750,257 | null | 685,395 | null | 1 | 53 | python|time|scheduler | 115,322 | <p>Reading the docs from <a href="http://docs.python.org/py3k/library/sched.html" rel="noreferrer">http://docs.python.org/py3k/library/sched.html</a>:</p>
<p>Going from that we need to work out a delay (in seconds)...</p>
<pre><code>from datetime import datetime
now = datetime.now()
</code></pre>
<p>Then use <code>d... |
20,242,841 | How to resolve java net ConnectException Connection refused connect even server is up | <p>I am using Httpurlconnection to send request from my jboss server to my device. The Device has been build up by cgi. </p>
<p>When server sends request from multiple thread at a time to device, some thread got an exception as java.net.ConnectException: Connection refused. but the device is sending response to serve... | 20,243,258 | 1 | 3 | null | 2013-11-27 12:42:50.27 UTC | 1 | 2013-11-27 13:23:06.973 UTC | 2013-11-27 12:54:34.09 UTC | null | 2,902,100 | null | 2,902,100 | null | 1 | 2 | java|sockets|httpurlconnection | 39,372 | <p>If a single thread connects fine, <em>every time</em>, but some threads running concurrently get this exception, then this is most likely due to a limited number of connections available. Can you change how many concurrent connections are available on the device? If not, then you can try limiting the number of thr... |
20,292,692 | Installing USB driver for Nexus 4 (with KitKat) on Windows 8 64-bit - "no compatible software driver" | <p>I'm desperately trying to install ADB USB drivers for my Nexus 4, which (as you might know) are required for any form of Android Development. You could also say, that they are the single most necessary tool used for Android programming, right? I have already often set up an Android Development Environment for my old... | 27,651,449 | 2 | 8 | null | 2013-11-29 20:05:06.343 UTC | 1 | 2015-02-17 20:21:05.663 UTC | 2014-12-17 02:28:48.63 UTC | null | 2,581,872 | null | 1,411,171 | null | 1 | 16 | android|windows-8|windows-8.1|android-4.4-kitkat|nexus-4 | 63,882 | <p>Enable Debug-Mode on the device. </p>
<p><strong>Steps to enable debug mode:</strong> </p>
<p>Before you do anything in order to develop on a Nexus 4 (at least in my experience), do the following: </p>
<ul>
<li>Open <strong>Settings</strong> App</li>
<li>Navigate to <strong>About Phone</strong></li>
<li>click <s... |
3,421,469 | How to test scientific software? | <p>I'm convinced that software testing indeed is very important, especially in science. However, over the last 6 years, I never have come across any scientific software project which was under regular tests (and most of them were not even version controlled). </p>
<p>Now I'm wondering how you deal with software tests ... | 3,421,596 | 4 | 2 | null | 2010-08-06 06:30:06.843 UTC | 22 | 2019-10-04 09:41:17.457 UTC | 2017-10-05 21:52:09.77 UTC | null | 3,924,118 | null | 383,239 | null | 1 | 37 | unit-testing|testing|scientific-computing | 3,800 | <p>I am also in academia and I have written quantum mechanical simulation programs to be executed on our cluster. I made the same observation regarding testing or even version control. I was even worse: in my case I am using a C++ library for my simulations and the code I got from others was pure spaghetti code, no inh... |
3,705,591 | Do I encode ampersands in <a href...>? | <p>I'm writing code that automatically generates HTML, and I want it to encode things properly.</p>
<p>Say I'm generating a link to the following URL:</p>
<pre><code>http://www.google.com/search?rls=en&q=stack+overflow
</code></pre>
<p>I'm assuming that all attribute values should be HTML-encoded. (Please correc... | 3,705,601 | 4 | 4 | null | 2010-09-14 01:36:43.09 UTC | 26 | 2021-11-10 02:41:23.447 UTC | null | null | null | null | 4,321 | null | 1 | 174 | html | 66,128 | <p>Yes, it is. HTML entities are parsed inside HTML attributes, and a stray <code>&</code> would create an ambiguity. That's why you should always write <code>&amp;</code> instead of just <code>&</code> inside <strong>all</strong> HTML attributes.</p>
<p>That said, only <code>&</code> and quotes <em>nee... |
3,557,780 | Add string to char array in C | <p>I have a C array called buf. Here is it's definition:</p>
<p><code>char buf[1024];</code></p>
<p>Now, my current code takes from <code>stdin</code> and uses <code>fgets()</code> to set that array, however I wish to use code to set it instead. Right now the line that sets buf looks like this:</p>
<p><code>fgets(bu... | 3,557,791 | 5 | 0 | null | 2010-08-24 14:54:17.453 UTC | 4 | 2010-08-24 17:06:24.677 UTC | null | null | null | null | 231,721 | null | 1 | 2 | c|arrays|string|char|fgets | 50,437 | <p>Look for <code>sprintf</code>, for example here: <a href="http://www.cplusplus.com/reference/clibrary/cstdio/sprintf/" rel="noreferrer">Cpp reference</a></p>
<p>Edit:</p>
<pre><code>sprintf(buf, "My string with args %d", (long) my_double_variable);
</code></pre>
<p>Edit 2:</p>
<p>As suggested to avoid overflow (... |
3,546,186 | TINYINT vs ENUM(0, 1) for boolean values in MySQL | <p>Which one is better, Tinyint with 0 and 1 values or ENUM 0,1 in MyISAM tables and MySQL 5.1?</p> | 3,546,296 | 5 | 1 | null | 2010-08-23 09:19:31.667 UTC | 5 | 2019-12-30 08:30:50.82 UTC | 2011-10-19 03:52:04.163 UTC | null | 135,152 | null | 396,472 | null | 1 | 30 | php|mysql|enums|tinyint | 27,679 | <p>You can use <code>BIT(1)</code> as mentioned in <a href="http://dev.mysql.com/doc/refman/5.1/en/numeric-type-overview.html" rel="noreferrer">mysql 5.1 reference</a>. i will not recommend <code>enum</code> or <code>tinyint(1)</code>
as <code>bit(1)</code> needs only 1 bit for storing boolean value while <code>tinyint... |
3,348,881 | Offset viewable image in <img> tags the same way as for background-image | <p>Using plain <img> tags is it possible to offset the image in the same way as you can with CSS background-image and background-position?</p>
<p>There are main images on the page and it makes little sense to have separate thumbnails when both will be loaded (thus increasing bandwidth). Some of the images are po... | 57,960,751 | 5 | 0 | null | 2010-07-27 23:50:59.79 UTC | 6 | 2019-09-16 16:11:48.65 UTC | 2010-07-28 00:09:09.92 UTC | null | 30,618 | null | 179,454 | null | 1 | 32 | html|css | 52,565 | <p>This is an old question, but it was the first one that came up when I googled the question, so I thought I would mention the answer that, in my opinion, actually solves the original problem how to emulate <code>background-position</code> attribute. The answer I found is to use CSS attributes <code>object-position</c... |
3,247,173 | Can I see if a timer is still running? | <p>Simple question here that I can't seem to find an answer for: Once a <code>setTimeout</code> is set, is there any way to see if it's still, well, set?</p>
<pre><code>if (!Timer)
{
Timer = setTimeout(DoThis,60000);
}
</code></pre>
<p>From what I can tell, when you <code>clearTimeout</code>, the variable remains... | 3,247,245 | 6 | 0 | null | 2010-07-14 14:32:47.93 UTC | 10 | 2019-09-25 11:27:43.603 UTC | null | null | null | null | 362,520 | null | 1 | 85 | javascript|settimeout | 113,305 | <p>There isn't anyway to interact with the timer except to start it or stop it. I typically null the timer variable in the timeout handler rather than use a flag to indicate that the timer isn't running. There's a nice description on <a href="http://www.w3schools.com/js/js_timing.asp" rel="noreferrer">W3Schools</a> a... |
3,623,739 | Locate Git installation folder on Mac OS X | <p>I'm just curious, Where Git get installed (via DMG) on Mac OS X file system?</p> | 7,089,778 | 11 | 3 | null | 2010-09-02 04:04:16.273 UTC | 35 | 2020-10-09 14:29:01.147 UTC | null | null | null | null | 394,868 | null | 1 | 124 | git|macos | 192,218 | <p>The installer from <a href="http://git-scm.com/" rel="noreferrer">the git homepage</a> installs into <strong>/usr/local/git</strong> by default. See also <a href="https://stackoverflow.com/questions/4725389/how-to-get-started-with-git-on-mac/4725627#4725627" title="this answer">this answer</a>. However, if you insta... |
3,547,388 | PHP Swift mailer: Failed to authenticate on SMTP using 2 possible authenticators | <p>When I send an email with the PHP Swift mailer to this server: smtp.exchange.example.com like this:</p>
<pre><code>// Load transport
$this->transport =
Swift_SmtpTransport::newInstance(
self::$config->hostname,
self::$config->port
)
->setUsername(self::$config->username)
... | 3,565,698 | 13 | 1 | null | 2010-08-23 12:14:06.703 UTC | 7 | 2021-06-09 13:27:58.213 UTC | 2013-12-27 16:10:07.707 UTC | null | 367,456 | null | 219,434 | null | 1 | 25 | php|authentication|smtp|swiftmailer | 113,663 | <p>Strange enough sending emails works again. We did not change anything and the host say they did not either. We think a server restarts or so. It is strange :S</p> |
3,755,136 | Pythonic way to check if a list is sorted or not | <p>Is there a pythonic way to check if a list is already sorted in <code>ASC</code> or <code>DESC</code></p>
<pre><code>listtimestamps = [1, 2, 3, 5, 6, 7]
</code></pre>
<p>something like <code>isttimestamps.isSorted()</code> that returns <code>True</code> or <code>False</code>.</p>
<p>I want to input a list of time... | 3,755,251 | 27 | 0 | null | 2010-09-20 20:15:14.093 UTC | 40 | 2022-07-17 08:15:39.19 UTC | 2017-01-21 12:44:58.713 UTC | null | 3,924,118 | null | 225,260 | null | 1 | 181 | python|algorithm|list|sorting | 157,380 | <p>Here is a one liner:</p>
<pre><code>all(l[i] <= l[i+1] for i in range(len(l) - 1))
</code></pre>
<p>If using Python 2, use <code>xrange</code> instead of <code>range</code>.</p>
<p>For <code>reverse=True</code>, use <code>>=</code> instead of <code><=</code>.</p> |
7,865,654 | Printing an array of characters | <p>I have an array of characters declared as:</p>
<pre><code>char *array[size];
</code></pre>
<p>When I perform a</p>
<pre><code>printf("%s", array);
</code></pre>
<p>it gives me some garbage characters, why it is so?</p>
<p><a href="http://www.cplusplus.com/reference/clibrary/cstdio/printf/" rel="noreferrer">http... | 7,865,664 | 4 | 1 | null | 2011-10-23 10:43:24.807 UTC | null | 2022-05-11 14:59:01.167 UTC | 2022-05-11 14:59:01.167 UTC | null | 5,784,757 | null | 247,814 | null | 1 | 6 | c|c-strings | 60,193 | <p>Your array is not initialized, and also you have an array of pointers, instead of an array of char's. It should be <code>char* array = (char*)malloc(sizeof(char)*size);</code>, if you want an array of char's. Now you have a pointer to the first element of the array.</p> |
8,078,892 | Stop saving photos using Android native camera | <p>I am using native Android camera and save file to my application data folder (/mnt/sdcard/Android/data/com.company.app/files/Pictures/). At the same time anther copy of photo is saved to DCIM folder. </p>
<p>This is my code:</p>
<pre><code>Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
String formatt... | 8,079,078 | 5 | 1 | null | 2011-11-10 11:36:28.113 UTC | 12 | 2018-08-08 16:21:56.637 UTC | 2011-11-10 14:24:48.013 UTC | null | 776,234 | null | 776,234 | null | 1 | 13 | android|native|android-camera|android-sdcard|android-camera-intent | 16,398 | <p>check this code.. </p>
<pre><code>private void FillPhotoList() {
// initialize the list!
GalleryList.clear();
String[] projection = { MediaStore.Images.ImageColumns.DISPLAY_NAME };
for(int i=0;i<projection.length;i++)
Log.i("InfoLog","projection "+projection[0].toString());
... |
8,186,965 | What do numbers using 0x notation mean? | <p>What does a <code>0x</code> prefix on a number mean?</p>
<pre><code>const int shared_segment_size = 0x6400;
</code></pre>
<p>It's from a C program. I can't recall what it amounts to and particularly what the letter <code>x</code> means.</p> | 8,186,974 | 5 | 3 | null | 2011-11-18 18:09:33.89 UTC | 44 | 2020-05-16 21:35:11.697 UTC | 2019-01-16 07:50:45.86 UTC | null | 1,364,007 | null | 761,330 | null | 1 | 154 | c|integer|hex|notation | 160,294 | <p>Literals that start with <code>0x</code> are hexadecimal integers. (base 16)</p>
<p>The number <code>0x6400</code> is <code>25600</code>.</p>
<pre><code>6 * 16^3 + 4 * 16^2 = 25600
</code></pre>
<p>For an example including letters (also used in hexadecimal notation where A = 10, B = 11 ... F = 15)</p>
<p>The num... |
7,713,274 | Java Immutable Collections | <p>From <a href="http://download.oracle.com/javase/6/docs/technotes/guides/collections/overview.html" rel="noreferrer">Java 1.6 Collection Framework documentation</a>:</p>
<blockquote>
<p>Collections that do not support any modification operations (such as <code>add</code>, <code>remove</code> and <code>clear</code>... | 7,713,332 | 7 | 1 | null | 2011-10-10 13:12:41.683 UTC | 42 | 2021-09-15 10:07:26.49 UTC | 2020-03-16 06:37:44.767 UTC | null | 757,695 | null | 311,455 | null | 1 | 126 | java|collections|immutability | 191,658 | <p>Unmodifiable collections are usually read-only views (wrappers) of other collections. You can't add, remove or clear them, but the underlying collection can change.</p>
<p>Immutable collections can't be changed at all - they don't wrap another collection - they have their own elements.</p>
<p>Here's a quote from g... |
7,921,840 | OS X Cocoa Auto Layout hidden elements | <p>I am trying to use the new <a href="http://developer.apple.com/library/mac/documentation/UserExperience/Conceptual/AutolayoutPG/Articles/Introduction.html" rel="noreferrer">Auto Layout</a> in Lion because it seems quite nice. But I can not find good information about how to do things. For example:</p>
<p>I have two... | 9,429,379 | 8 | 2 | null | 2011-10-27 20:19:05.377 UTC | 10 | 2018-07-17 04:20:22.447 UTC | null | null | null | null | 63,779 | null | 1 | 29 | macos|cocoa|osx-lion | 7,537 | <p>I don't think you could do it that way. If you made the layout for label 2 be based on a distance constraint from label 1, even if you made label 1 auto-collapse to zero height when it has no content, label 2 is still going to be that distance down, ie in:</p>
<pre><code>+----------------+
| +------------+ |
| + la... |
4,132,044 | Name database design notation you prefer and why? | <p>Which notation<strike>, methodology </strike> and tools for database designing, modeling, diagraming you prefer and why?
Which notation, standards<strike>, methodology</strike> are the most broadly used and covered by different vendors?</p>
<p>Which are standard and which are not? i.e. which are to stick with and wh... | 4,140,309 | 3 | 5 | null | 2010-11-09 09:16:49.827 UTC | 13 | 2021-08-18 22:56:37.847 UTC | 2021-08-15 22:59:07.763 UTC | null | 472,495 | null | 200,449 | null | 1 | 10 | sql|database|language-agnostic|database-design|standards | 5,448 | <h2>Extended 11 Dec 10</h2>
<p><strong>What does the question mean ?</strong></p>
<p>Before answering the "notation" question, which is the small visible issue on the surface, we need to understand the issues that underpin it, which lead to the surface issues. Otherwise the relevance to the question is reduc... |
4,576,271 | Monopoly game in OOD? | <p>I found this interesting blog post via CodingHorror: <a href="http://weblog.raganwald.com/2006/06/my-favourite-interview-question.html">My Favorite Interview Question</a>. In a nutshell, he talks about the object-oriented design challenges of designing the game of Monopoly, with an emphasis on how to model the rules... | 4,809,377 | 3 | 0 | null | 2011-01-01 23:19:31.93 UTC | 23 | 2011-01-28 23:35:12.283 UTC | 2011-01-26 21:47:54.227 UTC | null | 90,723 | null | 195,578 | null | 1 | 24 | oop|design-patterns|architecture | 10,634 | <p>Here's how I would design Monopoly. I've taken the liberty of assuming a dynamically-typed language since that makes everything easier. Ruby specifically.</p>
<p>You have a simple <code>Game</code> object that's mostly a wrapper around an <code>Array</code> of size 40, plus some convenience methods. The <code>Ga... |
4,463,035 | How to force google closure compiler to keep "use strict"; in the compiled js code? | <p>If you're using the module pattern and have something like this:</p>
<pre><code>(function () {
"use strict";
// this function is strict...
}());
</code></pre>
<p>and compile the code using the Google Closure Compiler, the <code>"use strict";</code> directive will not make it into the compiled file.</p>
<p>S... | 4,582,220 | 5 | 0 | null | 2010-12-16 16:32:50.797 UTC | 9 | 2019-07-30 20:46:52.66 UTC | null | null | null | null | 86,302 | null | 1 | 32 | javascript|google-closure|google-closure-compiler|ecmascript-5 | 8,664 | <p>This isn't the greatest answer, but as far as I can tell this is a known issue or "feature" (depending on your perspective) of closure compiler. Here's a <a href="http://code.google.com/p/closure-compiler/issues/detail?id=69" rel="noreferrer">partial explanation</a> of some of the problems involved. A couple mention... |
4,454,444 | C++ libraries that implement Go goroutines or Go channels? | <p>I'm working with a medium-sized C++ code base which is currently entirely single-threaded. The time has come, however, to pursue concurrency and parallelism for performance gains. I'm very interested in the concurrency model of Google's Go programming language, with very lightweight goroutines and a system of commun... | 4,455,814 | 6 | 4 | null | 2010-12-15 20:16:43.383 UTC | 13 | 2022-01-20 06:07:22.71 UTC | 2010-12-15 21:18:39 UTC | null | 298,036 | null | 298,036 | null | 1 | 29 | c++|concurrency|go | 13,150 | <p>If your aim is primarily speeding up compute things, Intel's <a href="https://www.threadingbuildingblocks.org/documentation/" rel="nofollow noreferrer">TBB</a> (Threading Building Blocks) is (IMHO) a better option than rolling your own inferior version from <code>boost::thread</code>.</p> |
4,560,288 | Python try/except: Showing the cause of the error after displaying my variables | <p>I'm not even sure what the right words are to search for. I want to display parts of the error object in an except block (similar to the err object in VBScript, which has Err.Number and Err.Description). For example, I want to show the values of my variables, then show the exact error. Clearly, I am causing a divi... | 4,560,341 | 7 | 0 | null | 2010-12-30 05:43:26.963 UTC | 15 | 2020-11-14 00:37:03.033 UTC | 2015-08-18 09:27:58.087 UTC | null | 3,001,761 | null | 160,245 | null | 1 | 44 | python|exception-handling | 85,799 | <pre><code>try:
1 / 0
except Exception as e:
print(e)
</code></pre> |
4,080,611 | #1025 - Error on rename of './database/#sql-2e0f_1254ba7' to './database/table' (errno: 150) | <p>So I am trying to add a primary key to one of the tables in my database. Right now it has a primary key like this:</p>
<pre><code>PRIMARY KEY (user_id, round_number)
</code></pre>
<p>Where user_id is a foreign key.</p>
<p>I am trying to change it to this:</p>
<pre><code>PRIMARY KEY (user_id, round_number, create... | 4,081,101 | 7 | 1 | null | 2010-11-02 17:55:17.963 UTC | 24 | 2018-07-01 19:28:34.863 UTC | 2011-04-30 17:29:46.803 UTC | null | 135,152 | null | 95,944 | null | 1 | 84 | mysql|sql|phpmyadmin|innodb|mysql-error-1025 | 106,589 | <p>There is probably another table with a foreign key referencing the primary key you are trying to change.</p>
<p>To find out which table caused the error you can run <code>SHOW ENGINE INNODB STATUS</code> and then look at the <code>LATEST FOREIGN KEY ERROR</code> section.</p> |
4,191,653 | I want to restore the database with a different schema | <p>I have taken a dump of a database named <code>temp1</code>, by using the follwing command </p>
<pre><code>$ pg_dump -i -h localhost -U postgres -F c -b -v -f pub.backup temp1
</code></pre>
<p>Now I want to restore the dump in a different database called "db_temp" , but in that I just want that all the tables sh... | 4,194,781 | 8 | 9 | null | 2010-11-16 06:20:18.277 UTC | 22 | 2022-03-11 09:38:25.29 UTC | 2018-03-22 06:53:44.24 UTC | null | 263,268 | null | 283,501 | null | 1 | 83 | postgresql|pg-dump|pg-restore | 81,675 | <p>There's no way in pg_restore itself. What you can do is use pg_restore to generate SQL output, and then send this through for example a sed script to change it. You need to be careful about how you write that sed script though, so it doesn't match and change things inside your data.</p> |
4,224,476 | Float:right reverses order of spans | <p>I have the HTML:</p>
<pre><code><div>
<span class="label"><a href="/index/1">Bookmix Offline</a></span>
<span class="button"><a href="/settings/">Settings</a></span>
<span class="button"><a href="/export_all/">Export</a></span>... | 4,224,500 | 16 | 2 | null | 2010-11-19 11:22:50.547 UTC | 15 | 2019-09-21 13:41:08.003 UTC | 2016-07-29 18:31:29.473 UTC | null | 3,474,146 | null | 205,270 | null | 1 | 62 | css | 96,800 | <p>The general solution to this problem is either to reverse the order of the right floated elements in the HTML, or wrap them in a containing element and float that to the right instead.</p> |
14,819,994 | get basic SQL Server table structure information | <p>I can get the number of columns in an SQL Server database with this:</p>
<pre><code>SELECT COUNT(*)
FROM INFORMATION_SCHEMA.COLUMNS
WHERE table_name = 'Address'
</code></pre>
<p>But is there any way (for an unknown number of columns) I can get the name and datatype and length of each column?</p> | 14,820,046 | 6 | 7 | null | 2013-02-11 20:10:06.167 UTC | 7 | 2018-07-06 11:51:51.237 UTC | 2013-02-11 20:22:44.217 UTC | null | 76,337 | null | 1,252,748 | null | 1 | 28 | sql|sql-server | 145,549 | <p>Instead of using <code>count(*)</code> you can <code>SELECT *</code> and you will return all of the details that you want including <code>data_type</code>:</p>
<pre><code>SELECT *
FROM INFORMATION_SCHEMA.COLUMNS
WHERE table_name = 'Address'
</code></pre>
<p>MSDN Docs on <a href="http://msdn.microsoft.com/en-us/lib... |
14,838,184 | Error: $digest already in progress | <p>I'm getting this error while trying to call </p>
<pre><code> function MyCtrl1($scope, $location, $rootScope) {
$scope.$on('$locationChangeStart', function (event, next, current) {
event.preventDefault();
var answer = confirm("Are you sure you want to leave this page?");
if (answ... | 14,838,239 | 5 | 1 | null | 2013-02-12 17:23:57.477 UTC | 11 | 2016-11-18 20:35:44.77 UTC | 2013-02-12 17:29:42.113 UTC | null | 1,426,157 | null | 1,426,157 | null | 1 | 32 | javascript|angularjs|angularjs-directive | 71,348 | <p><strong>Duplicated: <a href="https://stackoverflow.com/questions/12729122/prevent-error-digest-already-in-progress-when-calling-scope-apply">Prevent error $digest already in progress when calling $scope.$apply()</a></strong></p>
<p>That error you are getting means Angular's dirty checking is already in progress.</p... |
14,663,397 | How to use labels inside loops with AngularJS | <p>So I'm inside an <code>ng-repeat</code> like this:</p>
<pre><code><li ng-repeat="x in xs">
<form>
<label for="UNIQUELABEL">name</label>
<input id="UNIQUELABEL">
<label for="ANOTHERUNIQUELABEL">name2</label>
<input id="ANOTHERUNIQUELABEL"... | 25,221,392 | 3 | 0 | null | 2013-02-02 15:29:22.08 UTC | 7 | 2017-11-13 10:03:38.227 UTC | null | null | null | null | 251,162 | null | 1 | 47 | html|angularjs | 23,712 | <p>Since <code>ng-repeat</code> provides a new scope object on each iteration, I prefer using something like</p>
<pre><code><li ng-repeat="x in xs">
<form>
<label for="UNIQUELABEL{{::$id}}_1">name</label>
<input id="UNIQUELABEL{{::$id}}_1">
<label for="UNIQUEL... |
58,579,426 | In useEffect, what's the difference between providing no dependency array and an empty one? | <p>I gather that the <code>useEffect</code> Hook is run after every render, if provided with an empty dependency array:</p>
<pre class="lang-js prettyprint-override"><code>useEffect(() => {
performSideEffect();
}, []);
</code></pre>
<p>But what's the difference between that, and the following?</p>
<pre class="l... | 58,579,462 | 3 | 0 | null | 2019-10-27 12:28:09.057 UTC | 46 | 2022-06-16 22:32:27.007 UTC | 2020-02-13 15:40:19.12 UTC | null | 3,873,510 | null | 3,873,510 | null | 1 | 129 | reactjs|react-hooks|use-effect | 52,564 | <p>It's not quite the same. </p>
<ul>
<li><p>Giving it an empty array acts like <code>componentDidMount</code> as in, it only runs once.</p></li>
<li><p>Giving it no second argument acts as both <code>componentDidMount</code> and <code>componentDidUpdate</code>, as in it runs first on mount and then on every re-render... |
38,844,103 | cannot use ^xxx outside of match clauses | <p>This function:</p>
<pre><code>defp entries(query, page_number, page_size) do
offset = page_size * (page_number - 1)
query
|> limit([_], ^page_size) # error
|> offset([_], ^offset)
|> Repo.all
end
</code></pre>
<p>gives an exception:</p>
<pre><code>cannot use ^pg_size outside of match clauses
<... | 38,844,355 | 4 | 0 | null | 2016-08-09 06:58:08.733 UTC | 1 | 2019-09-27 11:45:21.393 UTC | 2017-03-23 20:44:32.813 UTC | null | 4,376 | null | 6,644,400 | null | 1 | 39 | elixir|phoenix-framework|ecto | 9,087 | <p>This is most usually a sign that you haven't imported appropriate macros from <code>Ecto.Query</code>.</p> |
40,391,566 | Render Jinja after jQuery AJAX request to Flask | <p>I have a web application that gets dynamic data from <strong>Flask</strong> when a <strong>select</strong> element from HTML is changed. of course that is done via <strong>jquery ajax</strong>. No probs here I got that.</p>
<p>The problem is, the dynamic data <strong>- that is sent by Flask -</strong>, is a list of... | 40,392,035 | 2 | 0 | null | 2016-11-02 23:37:01.657 UTC | 9 | 2016-11-03 12:30:08.153 UTC | null | null | null | null | 7,091,942 | null | 1 | 7 | jquery|python|ajax|flask|flask-sqlalchemy | 10,025 | <p>Okay, I got it.</p>
<p>Simply, I made an external <strong>html</strong> file and added the required <strong>jinja</strong> template to it.</p>
<pre><code>{% for object in object_list %}
{{object.name}}
{% endfor %}
</code></pre>
<p>then in my <strong>Flask</strong> file I literally returned the <strong>render_... |
40,760,274 | Add row to class diagram | <p>I am making a class diagram in draw.io, but I am completly new at it.</p>
<p>I am using the UML>Class2 figure.</p>
<p>The first three properties are part of the figure, but how do you get row number 4? </p>
<p>I assume there must be something so the text gets attached to the current figures.</p> | 40,815,539 | 4 | 0 | null | 2016-11-23 09:17:24.457 UTC | 4 | 2021-11-10 07:02:12.28 UTC | null | null | null | null | 2,854,001 | null | 1 | 72 | draw.io | 28,139 | <p>Select one of the existing rows and duplicate (ctrl/cmd-d or right click, select duplicate).</p> |
65,918,835 | When should I use Android Jetpack Compose Surface composable? | <p>There's <a href="https://developer.android.com/reference/kotlin/androidx/compose/material/package-summary#surface" rel="noreferrer">Surface</a> composable in Jetpack Compose which represents a <a href="https://material.io/design/environment/surfaces.html" rel="noreferrer">material surface</a>. A surface allows you t... | 65,918,836 | 3 | 0 | null | 2021-01-27 12:07:37.623 UTC | 6 | 2022-07-19 03:50:42.69 UTC | null | null | null | null | 4,858,777 | null | 1 | 41 | android|android-jetpack|android-jetpack-compose | 17,226 | <p><a href="https://developer.android.com/reference/kotlin/androidx/compose/material/package-summary#surface" rel="noreferrer">Surface</a> composable makes the code easier as well as explicitly indicates that the code uses a <a href="https://material.io/design/environment/surfaces.html" rel="noreferrer">material surfac... |
36,161,040 | Xcode 7.3 crashing when debugging with breakpoints | <p>I just install the Xcode 7.3 version. I can't debug at all because it's crashing when I try to use a breakpoint while I'm debugging. I tried removing Derive Data, Reboot my macbook, reinstall pods... but unfortunately nothing is working. Is someone having the same issue?</p>
<blockquote>
<p>Process: ... | 36,172,742 | 3 | 0 | null | 2016-03-22 17:17:19.277 UTC | 7 | 2016-10-12 03:47:15.707 UTC | 2016-10-12 03:47:15.707 UTC | null | 1,373,798 | null | 921,789 | null | 1 | 42 | xcode|xcode7|xcode8 | 6,205 | <p>What solved it for me is setting the "Enable Clang Module Debugging" in Build Setting to NO.</p> |
35,971,589 | Angular 2 ngModelChange select option, grab a specific property | <p>I have a dropdown select form in angular 2. </p>
<p>Currently: When I select an option the <code>option name</code> gets passed into my <code>onChange</code> function as <code>$event</code> </p>
<p>Wanted: When I select an option I would like to pass <code>workout.id</code> into my <code>onChange</code> function. ... | 35,971,617 | 2 | 0 | null | 2016-03-13 14:41:02.903 UTC | 11 | 2017-08-25 05:47:46.3 UTC | null | null | null | null | 4,178,623 | null | 1 | 33 | angular | 79,721 | <pre><code><select class="form-control" [ngModel]="selectedWorkout" (ngModelChange)="onChange($event)">
<option *ngFor="#workout of workouts" [value]="workout.id">{{workout.name}}</option>
</select>
</code></pre>
<p>OR</p>
<pre><code><select class="form-control" [(ngModel)]="selectedWor... |
28,926,612 | PuTTY configuration equivalent to OpenSSH ProxyCommand | <p>I'm just trying to use PuTTY to get an SSH connection to my servers.
These servers allow incoming SSH connection only from another specific server ("MySshProxyingServer" in example below).</p>
<p>Using Linux this is no problem with the <code>ssh -W</code> command.</p>
<p>In PuTTY I can't find the options to create... | 28,937,185 | 2 | 0 | null | 2015-03-08 12:52:19.533 UTC | 10 | 2021-05-28 15:30:18.98 UTC | 2019-10-18 10:48:33.603 UTC | null | 850,848 | null | 4,646,609 | null | 1 | 37 | ssh|proxy|putty|portforwarding|openssh | 45,625 | <p>The equivalent in PuTTY is "local proxy command". You can use the <a href="https://the.earth.li/~sgtatham/putty/latest/htmldoc/Chapter7.html" rel="noreferrer"><code>plink.exe</code></a> with the <a href="https://the.earth.li/~sgtatham/putty/latest/htmldoc/Chapter3.html#using-cmdline-ncmode" rel="noreferrer"><code>-n... |
44,482,788 | Using a Set data structure in React's state | <p>Is it possible to use ES6's <code>Set</code> data structure in React?</p>
<p>For example, if I have a checklist composed of distinct items, and I'd like to maintain each item's checked state. I'd like to write something like this:</p>
<pre><code>export default class Checklist extends React.Component {
constructo... | 44,482,908 | 2 | 0 | null | 2017-06-11 10:30:12.86 UTC | 10 | 2021-05-16 09:01:23.277 UTC | 2017-06-11 10:37:09.487 UTC | null | 1,989,647 | null | 1,989,647 | null | 1 | 63 | javascript|reactjs | 40,549 | <p>Since react will identify state changes only if the state property was replaced, and not mutated (shallow compare), you'll have to create a new Set from the old one, and apply the changes to it.</p>
<p>This is possible since <code>new Set(oldSet) !== oldSet</code>.</p>
<p><div class="snippet" data-lang="js" data-hid... |
22,506,624 | How to make Octave use "gnuplot" instead of "fltk" by default? | <p>I'm using Octave 3.8 on Ubuntu 13.10 and "fltk" for graphics is not working well. So I always switch to "gnuplot" by commanding:</p>
<pre><code>graphics_toolkit("gnuplot")
</code></pre>
<p>How can I configure Octave to use "gnuplot" by default?</p> | 22,511,710 | 2 | 0 | null | 2014-03-19 12:58:54.317 UTC | 8 | 2016-05-25 14:20:22.37 UTC | null | null | null | null | 562,440 | null | 1 | 19 | octave | 33,344 | <p>You add the command to your <code>.octaverc</code> file.</p>
<p>For more info: <a href="http://www.gnu.org/software/octave/doc/interpreter/Startup-Files.html" rel="noreferrer">http://www.gnu.org/software/octave/doc/interpreter/Startup-Files.html</a></p> |
27,049,294 | Searchview doesn't work since app compat | <p>Since I implented app compat my searchview doesn't work anymore:</p>
<pre><code> Process: com.laurenswuyts.witpa, PID: 26666
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.widget.SearchView.setSearchableInfo(android.app.SearchableInfo)' on a null object reference
... | 27,049,368 | 11 | 0 | null | 2014-11-20 20:49:46.247 UTC | 15 | 2022-05-09 19:11:59.56 UTC | null | null | null | null | 1,827,512 | null | 1 | 64 | java|android|search|menu|android-appcompat | 31,020 | <p>Try using the custom <code>app</code> namespace for your <code>actionViewClass</code> too:</p>
<pre><code>app:actionViewClass="android.support.v7.widget.SearchView"/>
</code></pre> |
34,357,617 | Append 2D array to 3D array, extending third dimension | <p>I have an array <code>A</code> that has shape <code>(480, 640, 3)</code>, and an array <code>B</code> with shape <code>(480, 640)</code>.</p>
<p>How can I append these two as one array with shape <code>(480, 640, 4)</code>? </p>
<p>I tried <code>np.append(A,B)</code> but it doesn't keep the dimension, while the <c... | 34,357,652 | 2 | 0 | null | 2015-12-18 14:15:10.053 UTC | 6 | 2021-11-22 23:20:25.797 UTC | 2015-12-18 14:31:05.1 UTC | null | 3,923,281 | null | 5,600,651 | null | 1 | 38 | python|arrays|numpy|append | 69,198 | <p>Use <a href="http://docs.scipy.org/doc/numpy-1.10.1/reference/generated/numpy.dstack.html" rel="noreferrer"><code>dstack</code></a>:</p>
<pre><code>>>> np.dstack((A, B)).shape
(480, 640, 4)
</code></pre>
<p>This handles the cases where the arrays have different numbers of dimensions and stacks the arrays ... |
38,875,051 | Declare an array in TypeScript | <p>I'm having trouble either declaring or using a boolean array in Typescript, not sure which is wrong. I get an <code>undefined</code> error. Am I supposed to use JavaScript syntax or declare a new Array object? </p>
<p>Which one of these is the correct way to create the array?</p>
<pre><code>private columns = boole... | 38,875,301 | 5 | 1 | null | 2016-08-10 13:37:39.933 UTC | 33 | 2022-06-21 03:01:20.2 UTC | null | null | null | user3325783 | null | null | 1 | 162 | javascript|arrays|typescript | 257,134 | <p>Here are the different ways in which you can create an array of booleans in typescript:</p>
<pre><code>let arr1: boolean[] = [];
let arr2: boolean[] = new Array();
let arr3: boolean[] = Array();
let arr4: Array<boolean> = [];
let arr5: Array<boolean> = new Array();
let arr6: Array<boolean> = Array... |
53,253,350 | How to show roles of user discord.js / userinfo command | <p>I'm trying to make a <code>userinfo</code> command, and I'm currently stuck on showing roles of the user.</p>
<p>Here is my code:</p>
<pre><code>const Discord = module.require('discord.js');
const moment = require('moment');
module.exports.run = async (bot, message, args) => {
let user = message.mentions.... | 53,264,907 | 6 | 0 | null | 2018-11-11 21:21:29.43 UTC | 2 | 2021-01-02 03:09:55.62 UTC | 2020-05-26 11:37:56.203 UTC | null | 12,825,713 | null | 10,637,682 | null | 1 | 5 | javascript|bots|discord|discord.js | 42,831 | <p><a href="https://discord.js.org/#/docs/main/stable/class/User" rel="nofollow noreferrer"><code>User.roles</code></a> is <code>undefined</code> because that property doesn't exist: try using <a href="https://discord.js.org/#/docs/main/stable/class/GuildMember?scrollTo=roles" rel="nofollow noreferrer"><code>GuildMembe... |
38,040,327 | How to pass rustc flags to cargo? | <p>I am trying to disable dead code warnings. I tried the following</p>
<pre><code>cargo build -- -A dead_code
</code></pre>
<blockquote>
<p>➜ rla git:(master) ✗ cargo build -- -A dead_code
error: Invalid arguments.</p>
</blockquote>
<p>So I am wondering how would I pass rustc arguments to cargo?</p> | 38,040,431 | 2 | 0 | null | 2016-06-26 15:55:13.487 UTC | 10 | 2022-02-14 22:27:06.703 UTC | null | null | null | null | 944,430 | null | 1 | 32 | rust|rust-cargo | 27,412 | <p>You can pass flags through Cargo by several different means:</p>
<ul>
<li><code>cargo rustc</code>, which only affects your crate and not its dependencies.</li>
<li>The <a href="https://doc.rust-lang.org/cargo/reference/environment-variables.html" rel="noreferrer"><code>RUSTFLAGS</code></a> environment variable, wh... |
37,800,605 | Hadoop native libraries not found on OS/X | <p>I have downloaded <code>hadoop</code> source code from github and compiled with the <code>native</code> option:</p>
<pre><code>mvn package -Pdist,native -DskipTests -Dtar -Dmaven.javadoc.skip=true
</code></pre>
<p>I then copied the <code>.dylib</code> files to the $HADOOP_HOME/lib </p>
<pre><code>cp -p hadoop-c... | 40,051,353 | 4 | 0 | null | 2016-06-13 23:16:10.067 UTC | 11 | 2019-08-22 19:25:41.387 UTC | 2019-08-22 19:25:41.387 UTC | null | 985,906 | null | 1,056,563 | null | 1 | 17 | macos|hadoop|hadoop-native-library | 14,697 | <p>To get this working on a fresh install of macOS 10.12, I had to do the following:</p>
<ol>
<li><p>Install build dependencies using <a href="http://brew.sh" rel="noreferrer">homebrew</a>:</p>
<pre><code>brew install cmake maven openssl protobuf@2.5 snappy
</code></pre></li>
<li><p>Check out hadoop source code</p>
... |
23,578,427 | Changing primary key int type to serial | <p>Is there a way to change existing primary key type from int to serial without dropping the table? I already have a lot of data in the table and I don't want to delete it. </p> | 23,578,612 | 2 | 0 | null | 2014-05-10 07:39:06.143 UTC | 14 | 2017-02-15 09:55:34.423 UTC | 2017-02-15 09:55:34.423 UTC | null | 4,370,109 | null | 3,137,498 | null | 1 | 39 | postgresql|primary-key|auto-increment | 41,054 | <p>Converting an int to a serial <a href="http://www.postgresql.org/docs/9.3/static/datatype-numeric.html#DATATYPE-SERIAL" rel="noreferrer">more or less only means adding a sequence default to the value</a>, so to make it a serial;</p>
<ul>
<li><p>Pick a starting value for the serial, greater than any existing value i... |
42,632,711 | How to call function on child component on parent events | <h2>Context</h2>
<p>In Vue 2.0 the documentation and <a href="http://taha-sh.com/blog/understanding-components-communication-in-vue-20" rel="noreferrer">others</a> clearly indicate that communication from parent to child happens via props.</p>
<h2>Question</h2>
<p>How does a parent tell its child an event has happen... | 45,463,576 | 11 | 1 | null | 2017-03-06 18:14:29.517 UTC | 74 | 2022-07-15 20:21:45.833 UTC | 2018-04-05 18:57:30.8 UTC | null | 1,218,980 | null | 1,399,513 | null | 1 | 279 | javascript|vue.js|event-handling|vuejs2 | 247,084 | <p>Give the child component a <code>ref</code> and use <code>$refs</code> to call a method on the child component directly.</p>
<p>html:</p>
<pre><code><div id="app">
<child-component ref="childComponent"></child-component>
<button @click="click">Click</butto... |
7,681,821 | Passing objects to client in node + express + jade? | <p>I have a pretty heavyweight query on the server that results in a new page render, and I'd like to pass along some of the results of the query to the client (as a javascript array of objects). This is basically so I don't have to do a separate JSON query later to get the same content (which is mostly static). The da... | 7,681,910 | 1 | 0 | null | 2011-10-07 00:00:27.447 UTC | 23 | 2011-10-07 11:49:11.443 UTC | null | null | null | null | 983,180 | null | 1 | 42 | json|node.js|express|pug | 27,549 | <p>You can't inline a JS object like that, but you can <code>JSON.stringify</code> it before:</p>
<pre><code><script type="text/javascript">
var data = !{JSON.stringify(data)};
</script>
</code></pre> |
22,568,354 | Jersey ClientBuilder.newClient(): source not found | <p>I have an Java 64-bit Eclipse application with Eclipse running on Windows 7 Pro x64.</p>
<p>I downloaded the <a href="https://jersey.java.net" rel="noreferrer">Jersey</a> bundle, jaxrs-ri-2.7.zip, for client RESTful API access.</p>
<p>I added these external jars (Project | Build Path | Configure Build Path... | Li... | 22,570,425 | 4 | 0 | null | 2014-03-21 19:56:13.437 UTC | 4 | 2019-11-12 12:48:54.327 UTC | 2014-03-21 23:08:01.093 UTC | null | 2,769,729 | null | 2,769,729 | null | 1 | 18 | java|eclipse|rest|jersey | 46,576 | <p>My guess is that "Source not found" simply is a message from Eclipse telling you it cannot debug into <code>Client oClient = ClientBuilder.newClient();</code> as you do not have the source code for the three jars attached in Eclipse. If you just run the program (without debugging) it might very well work. Read more ... |
56,285,197 | What is the difference between enterAnim & popEnterAnim & exitAnim & popExitAnim? | <p>What is the difference between animation tags in latest Navigation Architecture Component? I got confused with <code>enterAnim</code> & <code>popEnterAnim</code>. Similarly, <code>exitAnim</code> & <code>popExitAnim</code>.</p>
<p>Any visual expansions is more than welcomed.</p> | 56,285,404 | 3 | 0 | null | 2019-05-24 02:44:13.253 UTC | 4 | 2022-01-11 08:22:45.353 UTC | null | null | null | null | 8,412,192 | null | 1 | 51 | android|android-animation|android-architecture-navigation | 6,898 | <p>The <a href="https://developer.android.com/guide/navigation/navigation-animate-transitions" rel="noreferrer">Animate transitions between destinations documentation</a> details the four types of animations:</p>
<blockquote>
<ul>
<li>Entering a destination</li>
<li>Exiting a destination</li>
<li>Entering a de... |
2,546,780 | Python - animation with matplotlib.pyplot | <p>How can one create animated diagrams using popular matplotlib library? I am particularly interested in animated gifs.</p> | 2,547,625 | 3 | 0 | null | 2010-03-30 16:16:12.61 UTC | 9 | 2018-07-30 08:56:10.227 UTC | null | null | null | null | 215,571 | null | 1 | 23 | python|matplotlib | 36,083 | <p>The matplotlib docs provide an entire section of examples on <a href="http://matplotlib.sourceforge.net/examples/animation/index.html" rel="nofollow noreferrer">animation</a> (see this <a href="http://scipy-cookbook.readthedocs.io/items/Matplotlib_Animations.html" rel="nofollow noreferrer">scipy</a> tutorial also). ... |
3,065,606 | When did the idea of macros (user-defined code transformation) appear? | <p>I have read McCarthy's 1960 paper on LISP and found no reference to anything that's similar to user-defined macros or normal order evaluation. I was wondering when macros first appeared in programming language history (and also in Lisp history):</p>
<ul>
<li>When was the idea of user-defined code transformation (be... | 3,068,177 | 3 | 0 | null | 2010-06-17 20:59:49.637 UTC | 3 | 2019-05-15 05:13:20.913 UTC | 2016-02-11 17:04:50.613 UTC | null | 120,163 | null | 114,979 | null | 1 | 28 | macros|lisp|scheme|history|racket | 1,966 | <p>From <a href="http://www.dreamsongs.com/Files/HOPL2-Uncut.pdf" rel="noreferrer">The Evolution of Lisp</a> (Steele/Gabriel):</p>
<blockquote>
<p>3.3 Macros</p>
<p>Macros appear to have been introduced into Lisp by Timothy P. Hart in 1963 in a short MIT AI Memo [Hart, 1963],</p>
</blockquote>
<p>Timothy P. Hart, <a hr... |
2,992,451 | How to subtract a year from the datetime? | <p>How to subtract a year from current datetime using c#?</p> | 2,992,457 | 3 | 0 | null | 2010-06-07 19:26:10.293 UTC | 4 | 2016-12-29 14:43:22.757 UTC | null | null | null | null | 144,842 | null | 1 | 97 | c# | 97,950 | <pre><code>var myDate = DateTime.Now;
var newDate = myDate.AddYears(-1);
</code></pre> |
2,513,415 | How to fix access to the requested resource which has been denied in Tomcat? | <p>I want to enable form based authentication by using database as realm but I'm always getting that message whenever I try to authenticate as Tomcat manager in Tomcat 6. I have already created a table user_name and user_roles and mapped the username(blue) to admin and manager as role in user_roles table in mysql, but ... | 2,514,501 | 4 | 2 | null | 2010-03-25 06:09:02.243 UTC | 2 | 2015-04-10 15:00:47.44 UTC | 2020-06-20 09:12:55.06 UTC | null | -1 | null | 247,902 | null | 1 | 6 | tomcat|authentication|configuration|http-status-code-403|catalina | 45,732 | <p>I havent tried this myself. Can you try changing the auth-method in the <code>TOMCAT_HOME_DIR\webapps\manager\WEB-INF\web.xml</code> to point the auth-method set to FORM. The realm-name does not matter.</p>
<pre><code><login-config> <auth-method>FORM</auth-method> <realm-name>Tomcat Man... |
2,684,685 | Project structure in TFS 2010 | <p>We have just gotten TFS 2010 up and running. We will be migrating our source into TFS but I have a question on how to organize the code.</p>
<p>TFS 2010 has a new concept of project collections so I have decided that different groups within our organization will get their own group. My team develops many differen... | 2,782,463 | 4 | 0 | null | 2010-04-21 16:20:04.413 UTC | 14 | 2020-07-09 10:33:08.233 UTC | 2020-07-09 10:33:08.233 UTC | null | 8,528,014 | null | 35,165 | null | 1 | 19 | tfs|tfs-2010 | 9,386 | <p>The best practice for this is to have everything that you need to build a solution under your Main/Trunk folder. We use the following format:</p>
<pre><code> "Project 1"
"DEV" (Folder)
"Feature 1" (Branch)
"Main" (Root branch)
"Release" (Folder)
"Release 1" (Branch)
"RTM" (Folder)
"... |
3,033,859 | Splitting every character of a string? | <p>I want to split a string into each single character. Eg:
Splitting : <code>"Geeta" to "G", "e", "e" , "t", "a"</code>
How can I do this? I want to split a string which don't have any separator
Please help.</p> | 3,033,867 | 4 | 0 | null | 2010-06-13 20:48:52.75 UTC | 2 | 2019-04-21 20:33:04.027 UTC | 2016-03-05 16:46:53.307 UTC | null | 3,313,438 | null | 365,870 | null | 1 | 29 | c#|string|split | 76,606 | <p><code>String.ToCharArray()</code></p>
<p>From <a href="https://msdn.microsoft.com/en-us/library/ezftk57x(v=vs.110).aspx" rel="noreferrer">MSDN</a>:</p>
<blockquote>
<p>This method copies each character (that is, each Char object) in a string to a character array. The first character copied is at index zero of th... |
2,685,413 | What is the difference between a segmentation fault and a stack overflow? | <p>For example when we call say, a recursive function, the successive calls are stored in the stack. However, due to an error if it goes on infinitely the error is 'Segmentation fault' (as seen on GCC). </p>
<p>Shouldn't it have been 'stack-overflow'? What then is the basic difference between the two? </p>
<p>Btw, an... | 2,685,434 | 4 | 4 | null | 2010-04-21 18:08:05.687 UTC | 28 | 2014-01-26 02:22:23.597 UTC | 2010-04-21 18:14:21.083 UTC | null | 40,468 | null | 297,353 | null | 1 | 36 | c|memory|stack|segmentation-fault|stack-overflow | 13,761 | <p>Stack overflow is [a] cause, segmentation fault is the result.</p>
<hr>
<p>At least on x86 and ARM, the "stack" is a piece of memory reserved for placing local variables and return addresses of function calls. When the stack is exhausted, the memory outside of the reserved area will be accessed. But the app did no... |
2,360,965 | What really is connection pooling? | <p>I have heard the term connection pooling and looked for some references by googling it... But can't get the idea when to use it....</p>
<ul>
<li><p>When should i consider using
connection pooling?</p></li>
<li><p>What are the advantages and
disadvantagesof connection pooling?</p></li>
</ul>
<p>Any suggestion....</... | 2,360,981 | 6 | 8 | null | 2010-03-02 04:48:58.247 UTC | 10 | 2020-12-30 03:43:43.943 UTC | 2010-03-02 04:56:11.007 UTC | null | 207,556 | null | 207,556 | null | 1 | 24 | asp.net|connection-pooling | 6,664 | <p>The idea is that you do not open and close a single connection to your database, instead you create a "pool" of open connections and then reuse them. Once a single thread or procedure is done, it puts the connection back into the pool and, so that it is available to other threads. The idea behind it is that typicall... |
2,937,227 | What does (function($) {})(jQuery); mean? | <p>I am just starting out with writing jQuery plugins. I wrote three small plugins but I have been simply copying the line into all my plugins without actually knowing what it means. Can someone tell me a little more about these? Perhaps an explanation will come in handy someday when writing a framework :)</p>
<p>What... | 2,937,256 | 6 | 3 | null | 2010-05-30 01:36:57.727 UTC | 194 | 2020-06-17 13:08:58.253 UTC | 2011-08-08 15:30:22.59 UTC | null | 560,648 | null | 184,046 | null | 1 | 319 | javascript|jquery | 257,849 | <p>Firstly, a code block that looks like <code>(function(){})()</code> is merely a function that is executed in place. Let's break it down a little.</p>
<pre><code>1. (
2. function(){}
3. )
4. ()
</code></pre>
<p>Line 2 is a plain function, wrapped in parenthesis to tell the runtime to return the function to the p... |
2,487,844 | Simple way to show the 'Copy' popup on UITableViewCells like the address book App | <p>Is there a simple way for subclasses of UITableViewCell to show the 'Copy' UIMenuController popup like in the Address book app (see screenshot), after the selection is held for a while?</p>
<p><a href="https://i.stack.imgur.com/s1AAj.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/s1AAj.png" alt="... | 2,488,237 | 7 | 0 | null | 2010-03-21 16:49:01.253 UTC | 26 | 2021-04-12 14:05:23.893 UTC | 2021-04-12 14:05:23.893 UTC | null | 4,751,173 | null | 72,176 | null | 1 | 42 | ios|objective-c|iphone|uitableview|pasteboard | 21,994 | <p>The method before iOS 5 is to get the UIMenuController's shared instance, set the target rect and view and call <code>-setMenuVisible:animated:</code>. Remeber to implement <code>-canPerformAction:withSender:</code> in your responder.</p>
<hr>
<p>The method after iOS 5 (previously available as undocumented feature... |
2,724,864 | What is the difference between C# and .NET? | <p>May I know what is the difference between C# and .NET? When I think of C#, right away I would say it is a .NET language, but when I search for job posts, they require candidates to have C# and .NET experience. Can someone give me an explanation?</p> | 2,724,907 | 11 | 3 | null | 2010-04-27 20:31:22.273 UTC | 57 | 2022-08-09 20:11:07.41 UTC | 2013-07-17 17:08:09.697 UTC | null | 555,544 | null | 64,398 | null | 1 | 270 | c#|.net | 401,460 | <p>In addition to <a href="https://stackoverflow.com/a/2724872/10251345">Andrew's answer</a>, it is worth noting that:</p>
<ul>
<li>.NET isn't just a <strong>library</strong>, but also a <strong>runtime</strong> for executing applications.</li>
<li>The knowledge of C# implies some knowledge of .NET (because the C# obje... |
2,658,772 | Vertical line using XML drawable | <p>I'm trying to figure out how to define a vertical line (1dp thick) to be used as a drawable.</p>
<p>To make a horizontal one, it's pretty straightforward:</p>
<pre><code><shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="line">
<stroke android:width="1dp" android:color="#... | 2,659,038 | 18 | 0 | null | 2010-04-17 14:57:01.76 UTC | 59 | 2021-08-06 07:39:29.647 UTC | 2013-12-30 13:51:24.66 UTC | null | 56,285 | null | 55,583 | null | 1 | 183 | android|android-layout|line|android-xml|android-drawable | 269,115 | <p>Instead of a shape, you could try a <code>View</code>:</p>
<pre><code><View
android:layout_width="1dp"
android:layout_height="match_parent"
android:background="#FF0000FF" />
</code></pre>
<p>I have only used this for horizontal lines, but I would think it would work fo... |
45,401,734 | How to work with DTO in Spring Data REST projects? | <p>Spring Data REST automates exposing only domain object. But most often we have to deal with Data Transfer Objects. So how to do this in SDR way?</p> | 45,401,735 | 1 | 0 | null | 2017-07-30 15:51:58.61 UTC | 17 | 2017-07-30 15:51:58.61 UTC | null | null | null | null | 5,380,322 | null | 1 | 18 | spring|spring-data-rest|projection|dto | 17,819 | <p><strong>An approach of how to work with <a href="https://en.wikipedia.org/wiki/Data_transfer_object" rel="noreferrer">DTO</a> in <a href="https://projects.spring.io/spring-data-rest/" rel="noreferrer">Spring Data REST</a> projects</strong></p>
<p><em>The working example is <a href="https://github.com/Cepr0/spring-d... |
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