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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
17,492,167 | Group query results by month and year in postgresql | <p>I have the following database table on a Postgres server: </p>
<pre><code>id date Product Sales
1245 01/04/2013 Toys 1000
1245 01/04/2013 Toys 2000
1231 01/02/2013 Bicycle 50000
456461 01/01/2014 Bananas 4546
</code></pre>
<p>I would like to create a query that gives ... | 17,492,310 | 7 | 0 | null | 2013-07-05 15:18:24.213 UTC | 50 | 2021-09-24 05:59:09.193 UTC | 2013-07-05 20:17:43.46 UTC | null | 2,019,415 | null | 2,554,248 | null | 1 | 221 | sql|postgresql | 203,144 | <pre><code>select to_char(date,'Mon') as mon,
extract(year from date) as yyyy,
sum("Sales") as "Sales"
from yourtable
group by 1,2
</code></pre>
<p>At the request of Radu, I will explain that query:</p>
<p><code>to_char(date,'Mon') as mon,</code> : converts the "date" attribute into the defined format o... |
26,028,700 | Write to Client UDP Socket in Go | <p>I'm looking for a good solution for a client/server communication with UDP sockets in Go language.</p>
<p>The examples I found on the Internet show me how to send data to the server, but they do not teach how to send them back to the client.</p>
<p>To demonstrate, my program does the following:</p>
<p>My client p... | 26,032,240 | 3 | 3 | null | 2014-09-25 00:39:18.14 UTC | 7 | 2022-01-06 03:06:56.8 UTC | 2014-09-25 02:07:04.157 UTC | null | 4,017,302 | null | 3,381,662 | null | 1 | 22 | sockets|go|udp|gob | 50,357 | <p>Check the below samples for client/server communication over UDP. The sendResponse routine is for sending response back to client.</p>
<p><strong>udpclient.go</strong></p>
<pre><code>package main
import (
"fmt"
"net"
"bufio"
)
func main() {
p := make([]byte, 2048)
... |
23,300,953 | When debugging in device with ART enabled, android app is slow | <p>i dont know why but a week ago when i am debugging my app in android studio, the app in device is very slow, but if a generate the APK or use the play (Not debug) option works fine..</p>
<p>Anyone have idea why? I think i didnt any change in sdk or in the app to do it this..</p> | 23,301,174 | 1 | 9 | null | 2014-04-25 18:57:04.19 UTC | 5 | 2014-10-16 11:30:32.467 UTC | 2014-06-03 18:29:23.197 UTC | null | 168,868 | null | 988,283 | null | 1 | 28 | android|debugging|art-runtime | 8,872 | <p>When ART is enabled, the device cannot ensure the compiled code matches the bytecode instructions. It therefore cannot step through instructions and therefore lines.</p>
<p>This forces the device to fallback to a very slow interpreter, which possibly doesn't even JIT-compile.</p>
<p>For faster debugging, switch ba... |
4,980,348 | When SVN fails to merge and Mercurial succeeds | <p>Before it comes up, I've already looked at several threads on this topic, including these:</p>
<ul>
<li><p><a href="https://stackoverflow.com/questions/2475831/merging-hg-git-vs-svn/2486662#2486662">Merging: Hg/Git vs. SVN</a></p></li>
<li><p><a href="https://stackoverflow.com/questions/4592740/mercurial-compared-t... | 4,981,277 | 3 | 5 | null | 2011-02-12 20:11:03.36 UTC | 9 | 2012-03-06 21:07:37.197 UTC | 2017-05-23 11:44:22.297 UTC | null | -1 | null | 614,513 | null | 1 | 19 | svn|mercurial|merge|branching-and-merging | 1,200 | <p>As far as I know, anyone who says Mercurial tracks moving code around in less than file-sized chunks is just wrong. It <em>does</em> track file renames independently from code changes, so if Dave renames a file and Helen changes something in the file, it can automerge that, but as far as I know, Subversion can do t... |
5,197,035 | "Gift App" from inside the app | <p>I noticed that on the latest angry birds update they added a feature to gift your app from inside the app.</p>
<p>Up till now I knew you can gift paid apps from the iTunes itself. Does anybody know what link should I use to access this mechanism from inside the app itself?</p>
<p>Thanks!</p> | 5,199,511 | 3 | 1 | null | 2011-03-04 17:19:07.39 UTC | 32 | 2015-11-26 10:35:12.25 UTC | 2015-11-26 10:35:12.25 UTC | null | 1,505,120 | null | 172,637 | null | 1 | 49 | ios|objective-c|iphone|ipad | 9,630 | <p>If you watch what happens when you click that button, you can see that it initially makes a request to a redirect script on www.angrybirds.com:</p>
<p><a href="http://www.angrybirds.com/redirect.php?device=iphone&product=angrybirds&type=purchasegift" rel="noreferrer">http://www.angrybirds.com/redirect.php?d... |
4,977,252 | Why an unnamed namespace is a "superior" alternative to static? | <p>The section $7.3.1.1/2 from the C++ Standard reads:</p>
<blockquote>
<p>The use of the static keyword is
deprecated when declaring objects in a
namespace scope; the unnamed-namespace
provides <strong>a superior alternative.</strong></p>
</blockquote>
<p>I don't understand why an unnamed namespace is consid... | 4,977,525 | 3 | 11 | null | 2011-02-12 09:04:17.867 UTC | 60 | 2017-04-30 14:31:35.413 UTC | 2017-05-23 11:46:49.27 UTC | null | -1 | null | 415,784 | null | 1 | 110 | c++|namespaces|standards|iso | 41,735 | <ul>
<li>As you've mentioned, namespace works for anything, not just for functions and objects.</li>
<li>As Greg has pointed out, <code>static</code> means too many things already.</li>
<li>Namespaces provide a uniform and consistent way of controlling visibility at the global scope. You don't have to use different too... |
5,135,900 | Stack around the variable ' ' was corrupted | <pre><code>void GameBoard::enterShips()
{
char location[1];
int ships = 0;
int count = 1;
while(ships < NUM_SHIPS)
{
cout << "Enter a location for Ship " << count << ": ";
cin >> location;
cout << endl;
Grid[location[0]][location[1]]... | 5,135,934 | 4 | 1 | null | 2011-02-27 20:57:48.167 UTC | 1 | 2011-02-28 06:58:26.24 UTC | 2011-02-27 20:58:55.783 UTC | null | 36,384 | null | 636,824 | null | 1 | 8 | c++ | 70,421 | <p>You are prompting the memory address of <code>location</code> array to your user. You should ask location indices separately:</p>
<pre><code>void GameBoard::enterShips()
{
int location[2];
int ships = 0;
int count = 1;
while(ships < NUM_SHIPS)
{
cout << "Enter a location for Sh... |
18,746,569 | Force div element to stay in same place, when page is scrolled | <p>I created a <code>div</code> element, that I placed all the way on the right of my site. The only problem is that its at the top of the site, so if i scroll down it remains there.</p>
<p>How can I force it to remain in the same part of the page, when page is being scrolled?</p>
<p>This is, what I've managed to fig... | 18,746,597 | 5 | 3 | null | 2013-09-11 16:30:22.943 UTC | 11 | 2021-03-23 07:51:55.37 UTC | 2015-01-20 21:02:30.063 UTC | null | 1,469,208 | null | 330,396 | null | 1 | 41 | css|html | 135,844 | <p>Change <code>position:absolute</code> to <code>position:fixed;</code>.</p>
<p>Example can be found <a href="http://jsfiddle.net/HE5SF/2/" rel="noreferrer">in this jsFiddle</a>.</p> |
18,390,266 | How can we truncate float64 type to a particular precision? | <pre><code>package main
import (
"fmt"
"strconv"
)
func main() {
k := 10/3.0
i := fmt.Sprintf("%.2f", k)
f,_ := strconv.ParseFloat(i, 2)
fmt.Println(f)
}
</code></pre>
<p>I had to write the program above to decrease the precision of a go float64 variable to 2.
In this case I was using bo... | 18,418,551 | 12 | 6 | null | 2013-08-22 20:29:57.793 UTC | 10 | 2022-03-04 13:26:30.433 UTC | 2020-02-26 15:53:13.203 UTC | null | 13,860 | null | 1,089,354 | null | 1 | 74 | floating-point|go | 113,681 | <p>You don't need any extra code ... its as simple as </p>
<pre><code>import (
"fmt"
)
func main() {
k := 10 / 3.0
fmt.Printf("%.2f", k)
}
</code></pre>
<p><a href="http://play.golang.org/p/Ek0if-tlvX" rel="noreferrer">Test Code</a> </p> |
15,280,722 | Android Camera Capture using FFmpeg | <p>Am tryin' to take the preview frame generated by the android camera and pass the <code>data[]</code> to ffmpeg input pipe to generate a flv video.
The command that I used was : </p>
<pre><code>ffmpeg -f image2pipe -i pipe: -f flv -vcodec libx264 out.flv
</code></pre>
<p>I've also tried to force the input format to... | 15,290,723 | 1 | 2 | null | 2013-03-07 20:07:24.99 UTC | 8 | 2013-03-08 11:15:13.94 UTC | null | null | null | null | 1,712,427 | null | 1 | 9 | android|ffmpeg|android-camera | 10,383 | <p>Kinda got it working perfectly...
The mistake that seemed to be happenin' was related to the <code>vcodec</code> of the image stream.
Seems that ffmpeg has no provision to decode <code>NV21</code> format images or image stream.
For that had to convert the <code>NV21</code> format preview frame to <code>JPEG</code> a... |
14,962,459 | HTML divs, how to wrap content? | <p>I have 3 div's like on this image: </p>
<p><img src="https://i.stack.imgur.com/uPxjk.png" alt="enter image description here"></p>
<p>div1 has fixed width but variable height, so what I would like is that if div1 height is bigger that the div2 height, the div3 stays under div2 and on the right of the div1, like her... | 14,963,002 | 10 | 3 | null | 2013-02-19 16:28:21.947 UTC | 9 | 2016-04-12 15:12:16.29 UTC | 2014-04-08 14:22:53.903 UTC | null | 340,390 | null | 1,018,270 | null | 1 | 15 | html|css | 99,009 | <p>As CSS doesn't provide anything for that job yet, you will have to use Javascript.</p>
<p>I would firstly create a page like on your first picture.
Then I would use</p>
<pre><code>$("#div").height()
</code></pre>
<p>, which returns the height of your div and compare this to your second div's height:</p>
<pre><co... |
43,479,464 | How to Import a Single Lodash Function? | <p>Using webpack, I'm trying to import <a href="https://lodash.com/docs/4.17.4#isEqual" rel="noreferrer">isEqual</a> since <code>lodash</code> seems to be importing everything. I've tried doing the following with no success:</p>
<pre><code>import { isEqual } from 'lodash'
import isEqual from 'lodash/lang'
import isE... | 43,479,515 | 10 | 3 | null | 2017-04-18 18:16:43.16 UTC | 31 | 2022-02-12 15:57:13.48 UTC | 2019-01-15 08:24:38.763 UTC | null | 1,253,156 | null | 4,852,449 | null | 1 | 190 | javascript|lodash | 125,380 | <p>You can install <code>lodash.isequal</code> as a single module without installing the whole <em>lodash</em> package like so:</p>
<pre><code>npm install --save lodash.isequal
</code></pre>
<p>When using ECMAScript 5 and CommonJS modules, you then import it like this:</p>
<pre><code>var isEqual = require('lodash.is... |
7,974,102 | Is it possible to pass-through parameter values in Moq? | <p>I need to mock <code>HttpResponseBase.ApplyAppPathModifier</code> in such a way that the parameter <code>ApplyAppPathModifier</code> is called with is automatically returned by the mock.</p>
<p>I have the following code:</p>
<pre><code>var httpResponseBase = new Mock<HttpResponseBase>();
httpResponseBase.Set... | 7,974,112 | 2 | 2 | null | 2011-11-01 23:19:59.207 UTC | 4 | 2011-11-01 23:32:13.683 UTC | 2011-11-01 23:32:13.683 UTC | null | 169 | null | 169 | null | 1 | 31 | c#|testing|mocking|moq | 12,030 | <p>Use <code>It</code>:</p>
<pre><code>It.Is<MyClass>(mc=>mc == myValue)
</code></pre>
<p>Here you can check the expectation: the value you expect to receive.
In terms of return, just return value you need.</p>
<pre><code>var tempS = string.Empty;
var httpResponseBase = new Mock<HttpResponseBase>();
h... |
8,122,592 | Which book(s) to learn sockets programming and TCP network communication? | <p>I will do a few small projects over the next few months and need some books (preferably) or URLs to learn some basic concepts.</p>
<p>In general one PC or embedded device (which varies by project) collects some user input or data from an external hardware device and transmits it to a remote PC which will enter it i... | 8,122,888 | 2 | 2 | null | 2011-11-14 13:53:44.263 UTC | 29 | 2011-11-14 20:35:48.307 UTC | null | null | null | null | 192,910 | null | 1 | 36 | sockets|tcp|network-programming|scada | 35,158 | <p>This is <em>the</em> book to learn TCP/IP, doesn't matter what language you will be using:</p>
<p><a href="http://www.kohala.com/start/tcpipiv1.html" rel="noreferrer"><strong>W. Richard Stevens, TCP/IP Illustrated, Volume 1: The Protocols</strong></a></p>
<p>The following is the C network programmer's bible, highl... |
14,536,139 | How to input a string in a 2d array in C? | <p>If i want to take an input in a 2d array with each string in one row, and the next in the other(i.e. change the row on pressing enter). How can i do that in C. C doesnt seem to have convenient "String" Handling. I obviously mean doing so without the use of getchar().</p> | 14,536,859 | 3 | 1 | null | 2013-01-26 10:40:15.42 UTC | 3 | 2013-01-27 06:09:47.813 UTC | null | null | null | null | 1,803,855 | null | 1 | 2 | c|string|multidimensional-array | 67,676 | <pre><code>#include<stdio.h>
main()
{
char student_name[5][25];
int i;
for(i=0;i<5;i++)
{
printf("\nEnter a string %d: ",i+1);
scanf(" %[^\n]",student_name[i]);
}
}
</code></pre>
<p>u can read strings using 2d array without using getchar() by putting space in scanf(" %[^\n]... |
8,797,597 | Timezone Strategy | <p>I am building a MVC 3 application where the users may not be in the same time zone, so my intent was to store everything in UTC and convert from UTC to local time in the views and localtime to UTC on submissions.</p>
<p>Doing some browsing though there doesn't seem to be a lot of good solutions to this. To be hones... | 8,860,537 | 4 | 5 | null | 2012-01-10 01:41:42.66 UTC | 12 | 2012-01-14 18:05:52.447 UTC | 2012-01-14 18:05:52.447 UTC | null | 474,904 | null | 474,904 | null | 1 | 22 | c#|javascript|asp.net-mvc-3|timezone|utc | 5,919 | <p>You could handle the problem of converting UTC to user local time by using website-wide DisplayTemplate for DateTime. </p>
<p>From your Views you would use @Html.DisplayFor(n => n.MyDateTimeProperty)</p>
<p>The second problem is tougher to tackle. To convert from user local time to UTC you could override the <str... |
5,410,745 | How can I get a list of the items stored in html 5 local storage from javascript? | <p>How can I get a list of the items stored in html 5 local storage from javascript?</p> | 5,410,827 | 6 | 0 | null | 2011-03-23 19:44:31.183 UTC | 15 | 2021-01-05 19:38:55.663 UTC | 2011-03-23 19:54:54.463 UTC | null | 476,945 | null | 243,494 | null | 1 | 50 | javascript|html | 66,176 | <p>From <a href="http://diveintohtml5.info/storage.html" rel="noreferrer">HTML5 reference</a>: </p>
<blockquote>
<p>Like other JavaScript objects, you
can treat the localStorage object as
an associative array. Instead of using
the getItem() and setItem() methods,
you can simply use square brackets.</p>
</b... |
5,158,790 | Should I use a data.frame or a matrix? | <p>When should one use a <code>data.frame</code>, and when is it better to use a <code>matrix</code>?</p>
<p>Both keep data in a rectangular format, so sometimes it's unclear.</p>
<p>Are there any general rules of thumb for when to use which data type?</p> | 5,159,049 | 6 | 1 | null | 2011-03-01 18:36:16.523 UTC | 61 | 2018-10-25 06:39:46.707 UTC | 2016-03-23 14:21:54.937 UTC | null | 3,576,984 | null | 639,884 | null | 1 | 161 | r|matrix|dataframe|r-faq | 94,818 | <p>Part of the answer is contained already in your question: You use data frames if columns (variables) can be expected to be of different types (numeric/character/logical etc.). Matrices are for data of the same type. </p>
<p>Consequently, the choice matrix/data.frame is only problematic if you have data of the same ... |
5,379,794 | is Java HashSet thread-safe for read only? | <p>If I have an instance of an HashSet after I ran it through Collections.unmodifiableSet(), is it thread-safe?</p>
<p>I'm asking this since Set documentation states that it's not, but I'm only performing read operations.</p> | 5,379,832 | 7 | 1 | null | 2011-03-21 15:25:21.46 UTC | 8 | 2014-02-19 01:13:12.99 UTC | null | null | null | null | 109,318 | null | 1 | 33 | java|concurrency|hashset | 38,721 | <p>From the Javadoc:</p>
<blockquote>
<p>Note that this implementation is not synchronized. If multiple threads access a hash set concurrently, and at least one of the threads modifies the set, it must be synchronized externally</p>
</blockquote>
<p>Reading doesn't modify a set, therefore you're fine.</p> |
4,857,855 | Extending Devise SessionsController to authenticate using JSON | <p>I am trying to build a rails API for an iphone app. Devise works fine for logins through the web interface but I need to be able to create and destroy sessions using REST API and I want to use JSON instead of having to do a POST on the sessions controller and having to parse the HTML and deal with a redirect.</p>
<... | 4,975,442 | 7 | 1 | null | 2011-02-01 00:59:38.623 UTC | 49 | 2014-06-08 21:51:02.353 UTC | 2011-07-31 16:21:52.47 UTC | null | 38,795 | null | 576,108 | null | 1 | 48 | ruby-on-rails|ruby|authentication|devise | 31,140 | <p>This is what finally worked.</p>
<pre><code>class Api::V1::SessionsController < Devise::SessionsController
def create
respond_to do |format|
format.html { super }
format.json {
warden.authenticate!(:scope => resource_name, :recall => "#{controller_path}#new")
r... |
4,973,000 | Adding sub-directory to "View/Shared" folder in ASP.Net MVC and calling the view | <p>I'm currently developing a site using ASP.Net MVC3 with Razor. Inside the "View/Shared" folder, I want to add a subfolder called "Partials" where I can place all of my partial views (for the sake of organizing the site better.</p>
<p>I can do this without a problem as long as I always reference the "Partials" folde... | 4,996,869 | 7 | 0 | null | 2011-02-11 19:07:32.15 UTC | 18 | 2017-04-18 13:36:51.753 UTC | null | null | null | null | 613,536 | null | 1 | 51 | asp.net|asp.net-mvc|asp.net-mvc-2|asp.net-mvc-3|razor | 44,250 | <p>Solved this. To add the "Shared/Partials" sub directory I created to the list of locations searched when trying to locate a Partial View in Razor using:</p>
<pre><code>@Html.Partial("{NameOfView}")
</code></pre>
<p>First create a view engine with RazorViewEngine as its base class and add your view locations as fol... |
5,025,941 | Is there a way to get a <button> element to link to a location without wrapping it in an <a href ... tag? | <p>Just wondering if there is a way to get a HTML <code><button></code> element to link to a location without wrapping it in an <code><a href...</code> tag?</p>
<p>Button currently looks like:</p>
<pre><code><button>Visit Page Now</button>
</code></pre>
<p>What I would prefer <strong>not</strong... | 5,025,990 | 9 | 4 | null | 2011-02-17 06:57:10.76 UTC | 31 | 2021-04-25 16:26:15.637 UTC | 2015-02-01 16:30:46.04 UTC | null | 3,204,551 | null | 605,812 | null | 1 | 57 | javascript|html|button|hyperlink | 298,967 | <p>Inline Javascript:</p>
<pre><code><button onclick="window.location='http://www.example.com';">Visit Page Now</button>
</code></pre>
<p>Defining a function in Javascript:</p>
<pre><code><script>
function visitPage(){
window.location='http://www.example.com';
}
</script>
<... |
4,862,178 | Remove rows with all or some NAs (missing values) in data.frame | <p>I'd like to remove the lines in this data frame that:</p>
<p>a) <strong>contain <code>NA</code>s across all columns.</strong> Below is my example data frame. </p>
<pre><code> gene hsap mmul mmus rnor cfam
1 ENSG00000208234 0 NA NA NA NA
2 ENSG00000199674 0 2 2 2 2
3 ENSG0000022... | 4,862,502 | 17 | 0 | null | 2011-02-01 11:52:31.15 UTC | 432 | 2022-02-08 16:11:28.137 UTC | 2018-08-12 12:32:28.28 UTC | null | 2,204,410 | null | 525,563 | null | 1 | 1,039 | r|dataframe|filter|missing-data|r-faq | 2,160,968 | <p>Also check <a href="http://stat.ethz.ch/R-manual/R-patched/library/stats/html/complete.cases.html" rel="noreferrer"><code>complete.cases</code></a> :</p>
<pre><code>> final[complete.cases(final), ]
gene hsap mmul mmus rnor cfam
2 ENSG00000199674 0 2 2 2 2
6 ENSG00000221312 0 1 ... |
41,676,054 | How to add fonts to create-react-app based projects? | <p>I'm using <a href="https://github.com/facebook/create-react-app" rel="noreferrer">create-react-app</a> and prefer not to <code>eject</code>.</p>
<p>It's not clear where fonts imported via @font-face and loaded locally should go. </p>
<p>Namely, I'm loading</p>
<pre><code>@font-face {
font-family: 'Myriad Pro Re... | 41,678,350 | 12 | 5 | null | 2017-01-16 12:04:46.833 UTC | 108 | 2022-09-11 04:50:59.97 UTC | 2018-09-18 18:43:06.933 UTC | null | 3,951,782 | null | 48,062 | null | 1 | 357 | css|reactjs|fonts|webpack|create-react-app | 398,244 | <p>There are two options:</p>
<h3>Using Imports</h3>
<p>This is the suggested option. It ensures your fonts go through the build pipeline, get hashes during compilation so that browser caching works correctly, and that you get compilation errors if the files are missing.</p>
<p>As <a href="https://facebook.github.io/cr... |
12,080,087 | How to test the done and fail Deferred Object by using jasmine | <p>Here is the code about the javascript submit request (1).<br>
Here is the test about mocking the ajax request by using jasmine (2).</p>
<p>I would like to mock the server behaviour. Any ideas?<br>
See the comment in (1) and (2) for more details. </p>
<p>P.S.:<br>
Actually in both case the done and the fail Defe... | 12,435,465 | 3 | 3 | null | 2012-08-22 19:26:50.073 UTC | 8 | 2013-02-13 04:54:50.767 UTC | 2012-09-14 06:04:27.85 UTC | null | 1,113,216 | null | 1,113,216 | null | 1 | 28 | javascript|jquery|post|jasmine | 19,697 | <p>We actually ran into the same problem, trying to test Deferred objects that represent AJAXed template scripts for on-the-fly templating. Our testing solution involves using the <a href="https://github.com/pivotal/jasmine-ajax">Jasmine-Ajax</a> library in conjunction with Jasmine itself.</p>
<p>So probably it will b... |
12,190,147 | Customize dot with image of UIPageControl at index 0 of UIPageControl | <p>I'm a new learner of ios programming. I have tried to search with another example and more questions at stackoverflow but it's not my goal. I want to set an image of dot at index 0 of UIPageControl as similar as iPhone search homescreen. Have any way to do it ? Please explain me with some code or another useful lin... | 12,190,526 | 11 | 2 | null | 2012-08-30 04:58:02.48 UTC | 13 | 2021-06-15 20:04:24.683 UTC | null | null | null | null | 1,524,903 | null | 1 | 31 | iphone|ios | 57,944 | <p>Try this link:-</p>
<p>Answer with GrayPageControl:-
<a href="https://stackoverflow.com/questions/3409319/is-there-a-way-to-change-page-indicator-dots-color">Is there a way to change page indicator dots color</a></p>
<p>It is really good and reliable.I also have used this code.</p>
<p>You might have to do some mo... |
12,548,312 | Find all subsets of length k in an array | <p>Given a set <code>{1,2,3,4,5...n}</code> of n elements, we need to find all subsets of length k . </p>
<p>For example, if n = 4 and k = 2, the <code>output</code> would be <code>{1, 2}, {1, 3}, {1, 4}, {2, 3}, {2, 4}, {3, 4}</code>.</p>
<p>I am not even able to figure out how to start. We don't have to use the inb... | 12,548,381 | 15 | 1 | null | 2012-09-22 22:50:04.343 UTC | 10 | 2022-04-19 23:11:10.017 UTC | 2021-01-24 09:35:24.59 UTC | null | 1,048,572 | null | 971,683 | null | 1 | 40 | arrays|algorithm|subset|powerset | 57,245 | <p>Recursion is your friend for this task.</p>
<p>For each element - "guess" if it is in the current subset, and recursively invoke with the guess and a smaller superset you can select from. Doing so for both the "yes" and "no" guesses - will result in all possible subsets.
<br>Restraining yourself to a certain length... |
12,304,553 | TCPDF Save file to folder? | <p>I'm using TCPDF to print a receipt and then send it to customer with phpMailer, but I have a problem: </p>
<p><strong>I have no idea how to save the file into a pdf.</strong></p>
<p>I've tried this:</p>
<pre><code>// reset pointer to the last page
$pdf->lastPage();
//Close and output PDF document
$pdf->Out... | 12,304,671 | 12 | 2 | null | 2012-09-06 16:37:31.727 UTC | 12 | 2021-10-24 18:46:11.643 UTC | null | null | null | user1537415 | null | null | 1 | 41 | php|tcpdf | 127,037 | <p>try this</p>
<pre><code>$pdf->Output('kuitti'.$ordernumber.'.pdf', 'F');
</code></pre> |
19,112,031 | Difference between korn and bash shell | <p>I am completely new to Unix. Presently, I have been asked to learn about both <strong>KornShell (ksh)</strong> and <strong>Bash shell</strong>. Can some one please give me a short overview about the two? </p>
<p>Is the term "<strong>shell</strong>" synonymous to "<strong>terminal</strong>"? </p>
<p>I understand th... | 19,112,167 | 2 | 4 | null | 2013-10-01 09:01:35.127 UTC | 2 | 2014-01-06 17:40:50.533 UTC | 2014-01-06 17:40:50.533 UTC | null | 228,080 | null | 539,085 | null | 1 | 19 | bash|shell|unix|scripting|ksh | 41,976 | <p>Post from UNIX.COM</p>
<p><strong>Shell features</strong></p>
<p>This table below lists most features that I think would make you choose one shell over another. It is not intended to be a definitive list and does not include every single possible feature for every single possible shell. A feature is only considere... |
3,754,798 | IF ELSE problem COMMAND BATCH | <p>I have problem about IF ELSE in Command Batch script...</p>
<p>In Notepad:<br>
Code:</p>
<pre><code>:CHECKACCOUNT
if /I "%user%"=="insertusername" ( GOTO :ACCOUNT ) ELSE ( GOTO :CHECKPASSACCT )
:CHECKPASSACCT
if /I "%pass%"=="insertpassword" ( GOTO :ACCOUNT ) ELSE ( GOTO :COUNTER )
</code></pre>
<p>In COMMAND:<b... | 3,754,830 | 4 | 0 | null | 2010-09-20 19:25:26.107 UTC | 2 | 2017-03-09 15:53:46.663 UTC | 2010-09-20 20:03:43.033 UTC | null | 453,089 | null | 453,089 | null | 1 | 9 | scripting|batch-file|command|windows-server | 96,837 | <p>You can simplify this down to:</p>
<pre><code>:CHECKACCOUNT
if /I "%user%"=="insertusername" GOTO ACCOUNT
GOTO CHECKPASSACCT
:CHECKPASSACCT
if /I "%pass%"=="insertpassword" GOTO ACCOUNT
GOTO COUNTER
</code></pre>
<p>The <code>ELSE</code> statements aren't needed. Since the <code>IF</code> block will jump somewhe... |
3,539,274 | How do I scale my Scala REST application that uses Akka? | <p>I have a Scala application using Akka that receives REST requests, makes some operations against a database, and responds with some information to the client. As it is, my db operations take a long time and my REST-enabled actor is unable to respond to new requests in the meantime, even though I could run lots of op... | 4,503,332 | 4 | 1 | null | 2010-08-21 22:24:47.22 UTC | 10 | 2014-10-08 12:25:20.383 UTC | 2014-10-08 12:25:20.383 UTC | null | 819,887 | null | 309,224 | null | 1 | 12 | scala|rest|jersey|akka|scalability | 3,506 | <p>While I realize this thread is 4+ months stale now, it's worth noting that Akka has a new HTTP module implementation that transfers the request into an actor efficiently. This approach leverages the asynchronous servlet API (also works with Jetty continuations) to enable the suspended request to be passed through t... |
22,483,214 | Regex - check if input still has chances to become matching | <p>We've got such regexp:</p>
<pre><code>var regexp = /^one (two)+ three/;
</code></pre>
<p>So only string like <code>"one two three"</code> or <code>"one two three four"</code> or <code>"one twotwo three"</code> etc. will match it.</p>
<p>However, if we've got string like</p>
<p><code>"one "</code> - is still <em>... | 41,580,048 | 10 | 5 | null | 2014-03-18 15:03:14.293 UTC | 10 | 2020-07-18 16:07:32.63 UTC | 2014-09-02 12:00:53.44 UTC | null | 2,446,799 | null | 2,446,799 | null | 1 | 29 | javascript|regex | 5,981 | <p>This is a regex feature known as <em>partial matching</em>, it's available in several regex engines such as PCRE, Boost, Java but <em>not</em> in JavaScript.</p>
<p><a href="https://stackoverflow.com/a/22489941/3764814">Andacious's answer</a> shows a very nice way to overcome this limitation, we just need to automat... |
22,523,575 | How to insert json array into mysql database | <p>Hi I'm trying to insert the json array into my MySQL database. I'm passing the data form my iphone there i have converted the data into json format and I'm passing the data to my server using the url its not inserting into my server.</p>
<p>This is my json data.</p>
<blockquote>
<p>[{"name":"0","phone":"dsf","ci... | 22,523,620 | 6 | 7 | null | 2014-03-20 04:32:27.503 UTC | 9 | 2022-01-21 13:16:38.14 UTC | 2014-03-20 04:41:12.297 UTC | null | 3,427,551 | null | 3,427,551 | null | 1 | 16 | php|mysql|arrays|json | 97,785 | <pre><code> $json = file_get_contents('php://input');
$obj = json_decode($json,true);
</code></pre>
<p>I think you are passing the wrong variable. You should pass <code>$json</code> in <code>json_decode</code> as shown above.</p> |
20,723,100 | Why can only a superuser CREATE EXTENSION hstore, but not on Heroku? | <p>When I attempt to enable hstore on my database:</p>
<pre><code>=> CREATE EXTENSION IF NOT EXISTS hstore;
ERROR: permission denied to create extension "hstore"
HINT: Must be superuser to create this extension.
</code></pre>
<p>My user is not a superuser, but <em>is</em> the owner of the database.</p>
<p>Accor... | 20,745,157 | 3 | 4 | null | 2013-12-21 20:12:26.767 UTC | 5 | 2021-08-03 02:21:27.47 UTC | 2013-12-21 20:26:16.67 UTC | null | 4,937 | null | 4,937 | null | 1 | 36 | postgresql|heroku|hstore | 25,854 | <p>The hstore extension creates functions that call code from an external dynamic object, which requires superuser privilege. That's why creating the hstore extension requires superuser privilege.</p>
<p>As for Heroku, it is my understanding that they are running with a special extension whitelisting module, which al... |
10,946,624 | Finding IP Address for IPhone | <p>I am working on IPhone. I want to know how to find a ip address of a iphone through USB/3G not on wifi.
I am aware of seeing IP if it is connected through WiFI.(Going through settings and looking under Wifi)
But i need IP through USB / 3G. what i did means i used personal hotspot and i connected my iphone to PC thro... | 19,556,018 | 5 | 0 | null | 2012-06-08 09:52:46.377 UTC | null | 2019-07-25 20:52:58.7 UTC | null | null | null | null | 966,874 | null | 1 | 8 | iphone|ip | 98,005 | <p>Unfortunately the responses are not completely correct. In a 3G/4G network every device gets an IP address, but THAT's NOT the IP address that you see when going to sites like www.whatismyip.com. That's the address that the Telco presents to the external world, not the device IP address. </p>
<p>Telcos such AT&... |
10,875,750 | Left/right padding for Button.setCompoundDrawablesWithIntrinsicBounds()? | <p>I'm trying to set a left icon on a button with:</p>
<pre><code>setCompoundDrawablesWithIntrinsicBounds(R.drawable.foo, 0, 0, 0);
</code></pre>
<p>but the icon is placed flush up against the left edge of my button, and the text string. Is there a way to specify some left/right padding on the supplied icon so that i... | 10,875,862 | 2 | 0 | null | 2012-06-04 02:37:24.543 UTC | 3 | 2016-01-19 15:49:02.387 UTC | null | null | null | null | 291,701 | null | 1 | 26 | android | 53,322 | <p>I believe what you're looking for is <a href="http://developer.android.com/reference/android/widget/TextView.html#attr_android%3adrawablePadding" rel="noreferrer"><code>android:drawablePadding</code></a></p>
<p>Here's an example of using <code>drawablePadding</code> along with <code>paddingLeft</code> and <code>pad... |
10,943,088 | numpy.max or max ? Which one is faster? | <p>In python, which one is faster ? </p>
<pre><code>numpy.max(), numpy.min()
</code></pre>
<p>or</p>
<pre><code>max(), min()
</code></pre>
<p>My list/array length varies from 2 to 600. Which one should I use to save some run time ?</p> | 10,943,451 | 4 | 2 | null | 2012-06-08 04:31:55.497 UTC | 5 | 2022-01-26 11:42:56.24 UTC | null | null | null | null | 891,373 | null | 1 | 44 | python|numpy|runtime|max|min | 55,376 | <p>Well from my timings it follows if you already have numpy array <code>a</code> you should use <code>a.max</code> (the source tells it's the same as <code>np.max</code> if <code>a.max</code> available). But if you have built-in list then most of the time takes <em>converting</em> it into np.ndarray => that's why <cod... |
11,278,995 | Why doesn't NSOrderedSet inherit from NSSet? | <p>Surely an ordered set is a more-specific case of a set, so why does <code>NSOrderedSet</code> inherit from <code>NSObject</code> rather than <code>NSSet</code>?</p> | 11,279,208 | 1 | 4 | null | 2012-07-01 01:41:53.43 UTC | 14 | 2012-07-01 02:48:19.093 UTC | null | null | null | null | 461,492 | null | 1 | 51 | objective-c|ios|nsset|nsorderedset | 5,746 | <p>I went through the interface of <code>NSSet</code> and you're right, ordered sets appear to satisfy the <a href="http://en.wikipedia.org/wiki/Liskov_substitution_principle" rel="noreferrer">Liskov substitution principle</a> and could therefor inherit from <code>NSSet</code>.</p>
<p>There is one little method that b... |
11,140,163 | Plotting a 3d cube, a sphere and a vector in Matplotlib | <p>I search how to plot something with less instruction as possible with Matplotlib but I don't find any help for this in the documentation.</p>
<p>I want to plot the following things:</p>
<ul>
<li>a wireframe cube centered in 0 with a side length of 2</li>
<li>a "wireframe" sphere centered in 0 with a radius of 1</l... | 11,156,353 | 3 | 1 | null | 2012-06-21 14:15:43.44 UTC | 53 | 2020-09-02 15:16:33.497 UTC | 2019-07-17 12:49:32.93 UTC | null | 7,851,470 | null | 882,932 | null | 1 | 96 | python|matplotlib|3d|geometry | 145,729 | <p>It is a little complicated, but you can draw all the objects by the following code:</p>
<pre><code>from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
import numpy as np
from itertools import product, combinations
fig = plt.figure()
ax = fig.gca(projection='3d')
ax.set_aspect("equal")
# draw ... |
12,725,265 | Is it possible to use a for loop in <select> in html? and how? | <p>I am trying to use a for loop in html but i dont even know if this is possible. Is it? and if yes how? I dont want to use php. only html and javascript. </p>
<p>this is my goal: i have a file containing .txt files. i want to count the number of txt files and when i get the number i want to send it to where i will... | 12,734,637 | 7 | 4 | null | 2012-10-04 10:27:54.893 UTC | 2 | 2022-07-13 08:05:37.627 UTC | 2012-10-04 10:40:32.113 UTC | null | 1,438,482 | null | 1,438,482 | null | 1 | 6 | javascript|html | 44,777 | <p>Lots of answers.... here is another approach <strong>NOT</strong> using document.write OR innerHTML OR jQuery.... </p>
<p>HTML</p>
<pre><code><select id="foo"></select>
</code></pre>
<p>JS</p>
<pre><code>(function() { // don't leak
var elm = document.getElementById('foo'), // get the select
... |
12,694,569 | how to cleanly remove ndb properties | <p>in my app i need to remove a few of my models properties.<br>
i checked out <a href="https://developers.google.com/appengine/articles/update_schema" rel="noreferrer">this link</a> but the first issue is that the properties are on a <code>polymodel</code> and there is no way im going to switch to an <code>expando</co... | 12,701,172 | 1 | 0 | null | 2012-10-02 16:40:50.383 UTC | 11 | 2012-10-03 02:32:46.257 UTC | 2012-10-02 20:52:43.453 UTC | null | 258,564 | null | 258,564 | null | 1 | 15 | python|google-app-engine|app-engine-ndb|polymodel | 4,622 | <p>If you want to update all your entities the recommended approach is a map/reduce job that reads and rewrites all entities; however it may not be worth it, depending on how much data you have -- the map/reduce isn't free either.</p>
<p>Also be sure you test the map/reduce job on a small subset of the data. It is re... |
12,760,709 | Missing Localized Screenshots Error on itunes | <p>I have selected Default Language as "Australian English" as Default language. When I am submitting the binary it showing as rejected"Red Icon" with status "Missing Localized Screenshots". The application is in only single language. I have added screen shots also the application is only for iphone.</p>
<p>When I am ... | 12,760,736 | 11 | 0 | null | 2012-10-06 14:33:22.06 UTC | 3 | 2016-08-17 13:51:56.68 UTC | null | null | null | null | 905,517 | null | 1 | 28 | iphone|ios|binary|itunes | 16,596 | <p>Check if you have screenshots for iPhone 5. I had this same error, when screenshots for iP5 were missing.</p> |
12,927,027 | UICollectionView flowLayout not wrapping cells correctly | <p>I have a <code>UICollectionView</code> with a FLowLayout. It will work as I expect most of the time, but every now and then one of the cells does not wrap properly. For example, the the cell that should be on in the first "column" of the third row if actually trailing in the second row and there is just an empty spa... | 13,389,461 | 12 | 0 | null | 2012-10-17 04:18:06.78 UTC | 53 | 2021-09-28 04:47:54.463 UTC | 2018-09-17 10:52:49.927 UTC | null | 1,033,581 | null | 377,384 | null | 1 | 79 | ios|ios6|uicollectionview|uicollectionviewcell | 45,700 | <p>There is a bug in UICollectionViewFlowLayout's implementation of layoutAttributesForElementsInRect that causes it to return TWO attribute objects for a single cell in certain cases involving section insets. One of the returned attribute objects is invalid (outside the bounds of the collection view) and the other is ... |
13,180,543 | What is AssemblyInfo.cs used for? | <p>My question is pretty basic. What I'd like to know is what is the <code>AssemblyInfo.cs</code> file used for?</p> | 13,180,570 | 6 | 1 | null | 2012-11-01 15:43:00.54 UTC | 16 | 2020-12-31 04:13:28.037 UTC | 2020-12-31 04:13:28.037 UTC | null | 3,728,901 | null | 991,788 | null | 1 | 136 | .net | 103,157 | <blockquote>
<p>AssemblyInfo.cs contains information about your assembly, like name,
description, version, etc. You can find more details about its content
reading the comments that are included in it.</p>
<p>If you delete it, your assembly will be compiled with no information,
i.e., in the Details tab of ... |
16,639,484 | How to convert integer into categorical data in R? | <p>My data set has 8 variables and one of them is categorical but R thinks that it is integer (0's and 1's). What I have to do inorder to covert it into categorical?</p>
<pre><code>> str(mydata)
'data.frame': 117 obs. of 8 variables:
$ PRICE: int 2050 2080 2150 2150 1999 1900 1800 1560 1450 1449 ...
$ SQFT : ... | 16,639,537 | 1 | 0 | null | 2013-05-19 21:07:24.327 UTC | 7 | 2017-08-09 15:16:25.27 UTC | 2013-05-19 21:21:40.167 UTC | null | 1,315,767 | null | 233,286 | null | 1 | 28 | r|type-conversion | 107,574 | <p>Have a look at <code>?as.factor</code>. In your case </p>
<pre><code>mydata$COR <- as.factor(mydata$COR)
</code></pre> |
17,035,609 | Most Efficient Multipage RequireJS and Almond setup | <p>I have multiple pages on a site using RequireJS, and most pages have unique functionality. All of them share a host of common modules (jQuery, Backbone, and more); all of them have their own unique modules, as well. I'm wondering what is the best way to optimize this code using <a href="https://github.com/jrburke/r.... | 17,385,513 | 5 | 1 | null | 2013-06-11 02:22:57.593 UTC | 29 | 2015-06-01 02:54:07 UTC | 2013-06-29 00:13:56.147 UTC | null | 2,284,669 | null | 2,284,669 | null | 1 | 34 | optimization|compression|requirejs|r.js|almond | 10,003 | <p>I think you've answered your own question pretty clearly. </p>
<p>For production, we do - as well as most companies I've worked with <strong>option 3</strong>.</p>
<p>Here are advantages of solution 3, and why I think <strong>you should use it</strong>:</p>
<ul>
<li>It utilizes the <strong>most caching</strong>, ... |
16,788,068 | Hibernate: make database only if not exists | <p>I want Hibernate make database file (SQLite), but only if not exists.</p>
<p>Now in hibernate.cfg.xml I have this line:</p>
<pre><code><property name="hibernate.hbm2ddl.auto">create</property>
</code></pre>
<p>The problem is that database file is been creating in all the time, even the file exists.</p... | 16,788,284 | 2 | 4 | null | 2013-05-28 09:06:48.337 UTC | 4 | 2013-05-28 09:17:38.013 UTC | null | null | null | null | 1,819,402 | null | 1 | 34 | java|hibernate | 45,964 | <p>Try switching the value to <code>update</code></p>
<pre><code><property name="hibernate.hbm2ddl.auto">update</property>
</code></pre> |
17,091,300 | Linux: Set permission only to directories | <p>I have to change the permissions of the <code>htdocs</code> directory in apache to a certain group and with certain read/write/execute.</p>
<p>The directories need to have 775 permissions and the files need to have 664.</p>
<p>If I do a recursive 664 to the <code>htdocs</code>, then all files and directories will ... | 17,091,359 | 7 | 0 | null | 2013-06-13 15:40:41.6 UTC | 21 | 2021-09-06 00:12:52.923 UTC | 2013-07-26 14:49:25.267 UTC | null | 445,131 | null | 995,655 | null | 1 | 37 | linux|bash|directory|chmod | 37,898 | <p>Use find's <code>-type</code> option to limit actions to files and directories. Use the <code>-o</code> option to specify alternate actions for different types, so you only have to run <code>find</code> once, rather than separately for each type.</p>
<pre><code>find htdocs -type f -exec chmod 664 {} + -o -type d -e... |
25,569,865 | How to escape curly braces in a format string in Rust | <p>I want to write this</p>
<pre><code>write!(f, "{ hash:{}, subject: {} }", self.hash, self.subject)
</code></pre>
<p>But since curly braces have special meaning for formatting it's clear that I can't place the outer curly braces like that without escaping. So I tried to escape them.</p>
<pre><code>write!(f, "\{ ha... | 25,570,140 | 1 | 4 | null | 2014-08-29 13:59:02.72 UTC | 4 | 2018-10-08 12:41:34.967 UTC | null | null | null | null | 288,703 | null | 1 | 103 | string-formatting|rust | 28,569 | <p>You might be reading some out of date docs (e.g. for Rust 0.9)</p>
<p>As of Rust 1.0, <a href="https://doc.rust-lang.org/std/fmt/index.html#escaping" rel="noreferrer">the way to escape <code>{</code> and <code>}</code> is with another <code>{</code> or <code>}</code></a></p>
<pre><code>write!(f, "{{ hash:{}, subje... |
25,827,160 | Importing correctly with pytest | <p>I just got set up to use pytest with Python 2.6. It has worked well so far with the exception of handling "import" statements: I can't seem to get pytest to respond to imports in the same way that my program does.</p>
<p>My directory structure is as follows:</p>
<pre><code>src/
main.py
util.py
test/
... | 25,828,036 | 6 | 5 | null | 2014-09-13 20:02:50.083 UTC | 10 | 2022-08-07 02:23:07.843 UTC | 2014-09-15 03:52:48.877 UTC | null | 988,441 | null | 988,441 | null | 1 | 88 | python|import|pytest | 69,169 | <p><strong><em>import</em></strong> looks in the following directories to find a module:</p>
<ol>
<li>The <strong>home directory</strong> of the program. This is the directory of your root script. When you are running pytest your home directory is where it is installed (/usr/local/bin probably). No matter that you are... |
26,476,391 | How to auto-load MySQL on startup on OS X Yosemite / El Capitan | <p>After upgrading OS X my install of MySQL stopped loading on startup.</p>
<p>This <a href="http://dev.mysql.com/doc/mysql-macosx-excerpt/5.5/en/macosx-installation-startupitem.html" rel="noreferrer">walk-through on MySQL</a> says: </p>
<blockquote>
<p>"The Startup Item installation adds a variable MYSQLCOM=-YES- ... | 26,492,593 | 5 | 7 | null | 2014-10-20 23:06:38.39 UTC | 37 | 2017-10-30 07:44:29.107 UTC | 2016-02-17 22:46:24.257 UTC | null | 922,522 | null | 922,522 | null | 1 | 77 | mysql|macos|osx-yosemite|startup|osx-elcapitan | 60,862 | <p><strong>This is what fixed it:</strong></p>
<p>First, create a new file: /Library/LaunchDaemons/com.mysql.mysql.plist</p>
<pre><code><?xml version="1.0" encoding="UTF-8"?>
<plist version="1.0">
<dict>
<key>KeepAlive</key>
<true />
<key>Label</key>
&... |
9,660,445 | Detect iPhone Volume Button Up Press? | <p>Is there a notification that I can listen to that will tell me when an iPhone's volume is turned <strong>up</strong>? </p>
<p>I know about the <code>AVSystemController_SystemVolumeDidChangeNotification</code>, but it is essential that the notification only be triggered when the volume has been turned up, not up or ... | 10,155,141 | 4 | 0 | null | 2012-03-12 00:48:33.667 UTC | 9 | 2017-10-06 23:34:48.697 UTC | 2012-10-30 14:37:02.117 UTC | null | 299,797 | null | 817,946 | null | 1 | 13 | iphone|objective-c|ios|volume|avsystemcontroller | 15,538 | <p>There is no documented way to to this, but you can use this workaround. Register for <code>AVSystemController_SystemVolumeDidChangeNotification</code> notification and add an <code>MPVolumeView</code> which will prevent the system volume view from showing up.</p>
<pre><code>MPVolumeView *volumeView = [[MPVolumeView... |
10,085,951 | Scala ~> (tilde greater than) operator | <p>I have the following scala class definition (found in a paper), modeling categories:</p>
<pre><code>trait Category[~>[_, _]] {
def compose[A, B, C]
(f: B ~> C)
(g: A ~> B)
: A ~> C
def id[A]: A ~> A
}
</code></pre>
<p>can someone explain me what the '~>' means in the Category ... | 10,086,051 | 2 | 0 | null | 2012-04-10 09:11:39.757 UTC | 8 | 2019-05-06 19:59:00.36 UTC | null | null | null | null | 601,960 | null | 1 | 28 | scala|operators | 8,947 | <p><code>~></code> is just the placeholder-name for the type-parameter of <code>Category</code>. Like the <code>T</code> in <code>class Option[T]</code>.</p>
<p>Additionally, Scala syntax allows you to write <code>B ~> C</code> as a shorthand for <code>~>[B, C]</code>.</p>
<p>Maybe things get clearer, if you... |
9,657,691 | Xcode: Dragging a Project to a Workspace shows tiny .xcodeproj file in Project Navigator. What's wrong? | <p><strong>Setup</strong>:</p>
<p>Xcode 4.3.1 (or 5.x)<br>
OS X 10.7.3</p>
<p>I have reproduced this issue on two separate late-model Macs with this setup.</p>
<p><strong>Steps</strong>:</p>
<ol>
<li>Create a new Mac "Cocoa Application" Xcode Project. <code>File > New > Project…</code> Name it "MyApp".</li>
<... | 9,657,780 | 1 | 6 | null | 2012-03-11 18:31:58.967 UTC | 8 | 2013-11-21 00:07:37.05 UTC | 2013-11-21 00:07:37.05 UTC | null | 34,934 | null | 34,934 | null | 1 | 39 | xcode|macos | 12,965 | <p>Be sure you don't have the project already open in another window. Xcode only lets you open a project one time. I've made this mistake a lot when working on a framework then trying to add it to an application.</p>
<p>Simply close the project you're trying to drag in's window and everything will be happy.</p> |
9,899,113 | Get request.session from a class-based generic view | <p>Is there a way to get <code>request.session</code> from inside a class-based view? </p>
<p>For instance, I have </p>
<pre><code>from django.views.generic.edit import FormView
class CreateProfileView(FormView):
def form_valid(self, form):
# --> would like to save form contents to session here
... | 9,899,170 | 1 | 0 | null | 2012-03-27 23:22:44.96 UTC | 8 | 2013-03-12 19:30:55.987 UTC | null | null | null | null | 1,161,906 | null | 1 | 39 | django|django-views | 29,399 | <p>You have access to <code>self.request</code> from anywhere within the class (and therefore <code>self.request.session</code>)</p>
<p><a href="https://docs.djangoproject.com/en/dev/topics/class-based-views/generic-display/#dynamic-filtering">https://docs.djangoproject.com/en/dev/topics/class-based-views/generic-disp... |
10,242,501 | How to find a substring in a field in Mongodb | <p>How can I find all the objects in a database with where a field of a object contains a substring?</p>
<p>If the field is A in an object of a collection with a string value:</p>
<p>I want to find all the objects in the db "database" where A contains a substring say "abc def".</p>
<p>I tried: </p>
<pre><code>db.da... | 10,244,062 | 6 | 1 | null | 2012-04-20 08:08:34.163 UTC | 10 | 2021-04-13 06:50:49.257 UTC | 2017-09-22 18:01:22.247 UTC | null | -1 | null | 713,087 | null | 1 | 73 | mongodb|nosql | 98,992 | <p>Instead of this:</p>
<pre><code>db.database.find({A: {$regex: '/^*(abc def)*$/''}})
</code></pre>
<p>You should do this:</p>
<pre><code>db.database.find({A: /abc def/i })
</code></pre>
<p>^* is not actually valid syntax as ^ and $ are anchors and not something that is repeatable. You probably meant ^.* here. But... |
8,087,736 | How do you make a dynamically-sized data table? | <p>I am using Excel 2010.</p>
<p>I have a "monthly" data table that looks similar to this:</p>
<pre><code>MonthBegin InventoryExpenses Overhead TotalSales TotalSalesIncome TotalProfit
July-11 $1,500 $4,952 89 $7,139 $687
August-11 $2,200 $4,236 105 ... | 8,149,620 | 3 | 2 | null | 2011-11-10 23:14:20.547 UTC | null | 2016-11-09 13:58:35.893 UTC | 2016-11-09 13:58:35.893 UTC | null | 4,370,109 | null | 120,888 | null | 1 | 5 | excel|datatable|excel-formula | 56,778 | <p>You can't <strong>dynamically</strong> add a new row with formula only.</p>
<p>Here is a VBA event procedure that will do the trick. You need to put in the <code>Workbook module</code></p>
<pre><code>Option Explicit
Private Sub Workbook_Open()
Dim lo As ListObject
Dim iTot As Long
Set lo = ListObjects("MyTable")
... |
7,912,180 | Plotting multiple lines from a data frame in R | <p>I am building an R function to plot a few lines from a data table, I don't understand why this is not working?</p>
<pre><code>data = read.table(path, header=TRUE);
plot(data$noop);
lines(data$noop, col="blue");
lines(data$plus, col="green");
</code></pre>
<p>I am reading the data from a file I has which is formatt... | 7,913,639 | 3 | 2 | null | 2011-10-27 05:57:20.773 UTC | 3 | 2013-03-29 18:31:32.023 UTC | 2013-03-29 18:31:32.023 UTC | null | 697,568 | null | 546,427 | null | 1 | 6 | r|graph|plot | 70,336 | <p>Have a look at the ggplot2 package</p>
<pre><code>library(ggplot2)
library(reshape)
data <- data.frame(time = seq(0, 23), noob = rnorm(24), plus = runif(24), extra = rpois(24, lambda = 1))
Molten <- melt(data, id.vars = "time")
ggplot(Molten, aes(x = time, y = value, colour = variable)) + geom_line()
</code><... |
11,808,432 | C++- error C2144 syntax error : 'int' should be preceded by ';' | <p>I'm trying to compile this C++ code:</p>
<pre><code>#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "general_configuration.h"
#include "helper_functions.h"
#define LINE_LEN 80
// file_with_as_ext returns 1 if the input has .as extension
int file_with_as_ext(char* input)
{
... | 11,808,543 | 3 | 5 | null | 2012-08-04 11:51:29.157 UTC | 2 | 2019-04-08 08:59:04.857 UTC | 2019-04-08 08:59:04.857 UTC | null | 2,527,795 | null | 1,363,226 | null | 1 | 6 | c++ | 39,723 | <p>First, the code you have posted begins with a stray backtick. If that's really in your code, you should remove it.</p>
<p>Second, the compiler would be happier, and emit fewer warnings, if you ended your function with the line</p>
<pre><code>return 0; // unreachable
</code></pre>
<p>This is good C++ style and is... |
11,498,366 | How to create an UI or a widget that sits on top of all applications in Android? | <p>Can I create an UI or a widget in Android that will sit on top of all applications? There are applications that have widgets like this. One example has a camera icon on top of all the applications that, when clicked, will capture the screen. </p> | 11,498,612 | 2 | 0 | null | 2012-07-16 05:03:36.6 UTC | 11 | 2017-05-15 21:58:56.853 UTC | 2017-05-15 21:58:56.853 UTC | null | 5,992,240 | null | 450,431 | null | 1 | 8 | android|android-windowmanager | 5,232 | <p>If you want to just display something, you can display it on top of everything even the lockscreen.</p>
<p>If you want something to be clickable, you can display it on top of anything except the lockscreen.</p>
<p>Here's a sample, modify to your needs:</p>
<p>Create a service and do the following:</p>
<pre><code... |
11,551,079 | Programmatically adding Label to Windows Form (Length of label?) | <p>In my code, i create a label with the following:</p>
<pre><code>Label namelabel = new Label();
namelabel.Location = new Point(13, 13);
namelabel.Text = name;
this.Controls.Add(namelabel);
</code></pre>
<p>The string called name is defined before this, and has a length of around 50 characters. However, only the fir... | 11,551,100 | 4 | 1 | null | 2012-07-18 22:07:36.167 UTC | 2 | 2021-08-29 10:28:40.083 UTC | null | null | null | null | 1,116,831 | null | 1 | 12 | c#|.net|label|windows-forms-designer | 52,466 | <p>Try adding the AutoSize property:</p>
<pre><code>namelabel.AutoSize = true;
</code></pre>
<p>When you place a label on a form with the design editor, this property defaults to true, but if you create the label in code like you did, the default is false.</p> |
11,924,452 | Iterating over basic “for” loop using Handlebars.js | <p>I’m new to Handlebars.js and just started using it. Most of the examples are based on iterating over an object. I wanted to know how to use handlebars in basic for loop.</p>
<p>Example.</p>
<pre><code>for(i=0 ; i<100 ; i++) {
create li's with i as the value
}
</code></pre>
<p>How can this be achieved?</p> | 11,924,998 | 5 | 0 | null | 2012-08-12 17:59:11.607 UTC | 25 | 2020-11-24 14:25:24.773 UTC | 2016-06-14 10:20:41.087 UTC | null | 313,106 | null | 1,184,100 | null | 1 | 82 | handlebars.js | 100,317 | <p>There's nothing in Handlebars for this but you can add your own helpers easily enough.</p>
<p>If you just wanted to do something <code>n</code> times then:</p>
<pre><code>Handlebars.registerHelper('times', function(n, block) {
var accum = '';
for(var i = 0; i < n; ++i)
accum += block.fn(i);
... |
11,799,159 | trying to align html button at the center of the my page | <p>I'm trying to align an HTML button exactly at the centre of the page irrespective of the browser used. It is either floating to the left while still being at the vertical centre or being somewhere on the page like at the top of the page etc.. </p>
<p>I want it to be both vertically and horizontally be centered. Her... | 11,799,200 | 9 | 1 | null | 2012-08-03 15:53:37.3 UTC | 21 | 2021-07-15 19:12:34.083 UTC | 2019-10-07 19:44:10.133 UTC | null | 2,756,409 | null | 1,455,116 | null | 1 | 118 | html|css|button|alignment|vertical-alignment | 1,006,015 | <p>Here's your solution: <a href="http://jsfiddle.net/7Laf8/" rel="noreferrer">JsFiddle</a></p>
<p>Basically, place your button into a div with centred text:</p>
<pre><code><div class="wrapper">
<button class="button">Button</button>
</div>
</code></pre>
<p>With the following styles:</p>
... |
11,997,032 | How to get box-shadow on left & right sides only | <p>Any way to get box-shadow on left & right (horizontal?) sides only with no hacks or images. I am using:</p>
<pre><code>box-shadow: 0 0 15px 5px rgba(31, 73, 125, 0.8);
</code></pre>
<p>But it gives shadow all around.</p>
<p>I have no borders around the elements.</p> | 11,997,074 | 16 | 0 | null | 2012-08-16 23:49:59.47 UTC | 81 | 2021-11-10 13:22:56.23 UTC | null | null | null | null | 731,043 | null | 1 | 242 | html|css | 338,952 | <blockquote>
<p><strong>NOTE:</strong> I suggest checking out <a href="https://stackoverflow.com/a/17323375/605707">@Hamish's answer</a> below; it doesn't involve the imperfect "masking" in the solution described here.</p>
</blockquote>
<hr>
<p>You can get close with multiple box-shadows; one for each side</p>
<pr... |
3,638,887 | What's the difference between self and window? | <p>I have a JavaScript that deals with with detection whether the page is in frames or not. I used top.frames[] etc. and everything works fine. </p>
<p>In this script I noticed that I can use "window" or "self" interchangeably and everything still works. Is "window" same as "self" when used in HTML page?</p> | 3,638,982 | 4 | 1 | null | 2010-09-03 19:21:13.883 UTC | 4 | 2019-08-20 04:52:09.077 UTC | null | null | null | null | 14,690 | null | 1 | 51 | javascript|window | 19,800 | <p>From <em>Javascript: The Definitive Guide</em>:</p>
<blockquote>
<p>The Window object defines a number of
properties and methods that allow you
to manipulate the web browser window.
It also defines properties that refer
to other important objects, such as
the <code>document</code> property for the
Do... |
3,801,431 | Python: any way to perform this "hybrid" split() on multi-lingual (e.g. Chinese & English) strings? | <p>I have strings that are multi-lingual consist of both languages that use whitespace as word separator (English, French, etc) and languages that don't (Chinese, Japanese, Korean).</p>
<p>Given such a string, I want to separate the English/French/etc part into words using whitespace as separator, and to separate the ... | 3,801,846 | 5 | 2 | null | 2010-09-27 06:02:58.47 UTC | 12 | 2018-08-01 01:52:52.303 UTC | 2012-05-05 16:37:35.367 UTC | null | 1,079,354 | null | 86,073 | null | 1 | 12 | python|string|unicode|multilingual|cjk | 5,800 | <p>I thought I'd show the regex approach, too. It doesn't feel right to me, but that's mostly because all of the language-specific i18n oddnesses I've seen makes me worried that a regular expression might not be flexible enough for all of them--but you may well not need any of that. (In other words--overdesign.)</p>
... |
3,223,899 | PHP eval and capturing errors (as much as possible) | <p><strong><em>Disclaimer</strong>; I'm fully aware of the pitfalls and "evils" of eval, including but not limited to: performance issues, security, portability etc.</em></p>
<p><strong>The problem</strong></p>
<p>Reading the PHP manual on eval...</p>
<blockquote>
<p>eval() returns NULL unless return is
called ... | 3,224,985 | 6 | 3 | null | 2010-07-11 17:01:42.46 UTC | 10 | 2021-08-18 11:07:32.42 UTC | 2010-07-11 17:36:21.907 UTC | null | 314,056 | null | 314,056 | null | 1 | 33 | php|exception|parsing|eval | 28,793 | <p>I've found a good alternative/answer to my question.</p>
<p>First of, let me start by saying that nikic's suggestion works when I set error_reporting(E_ALL); notices are shown in PHP output, and thanks to OB, they can be captured.</p>
<p>Next, I've found this very useful code:</p>
<pre><code>/**
* Check the synt... |
3,550,337 | WITH (NOLOCK) vs SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED | <p>Could someone give me some guidance on when I should use <code>WITH (NOLOCK)</code> as opposed to <code>SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED</code></p>
<p>What are the pros/cons of each? Are there any unintended consequences you've run into using one as opposed to the other?</p> | 3,550,398 | 6 | 0 | null | 2010-08-23 18:05:07.963 UTC | 43 | 2015-07-09 17:44:44.117 UTC | 2014-07-18 09:22:52.307 UTC | null | 27,825 | null | 195,583 | null | 1 | 131 | sql|sql-server|sql-server-2005 | 148,617 | <p>They are the same thing. If you use the <code>set transaction isolation level</code> statement, it will apply to all the tables in the connection, so if you only want a <code>nolock</code> on one or two tables use that; otherwise use the other. </p>
<p>Both will give you dirty reads. If you are okay with that, then... |
3,592,079 | Minimum window width in string x that contains all characters of string y | <p>Find minimum window width in string <code>x</code> that contains all characters of another string <code>y</code>. For example:</p>
<pre><code>String x = "coobdafceeaxab"
String y = "abc"
</code></pre>
<p>The answer should be 5, because the shortest substring in <code>x</code> that contains all three letters of <co... | 3,592,224 | 7 | 3 | null | 2010-08-28 19:10:41.047 UTC | 18 | 2017-08-31 14:33:14.503 UTC | 2017-08-31 14:33:14.503 UTC | null | 10,265,365 | null | 203,091 | null | 1 | 20 | algorithm | 7,602 | <p><strong>time: O(n) (One pass)<br>
space: O(k)</strong></p>
<p>This is how I would do it:<br>
Create a hash table for all the characters from string Y. (I assume all characters are different in Y). </p>
<p>First pass:<br>
Start from first character of string X.<br>
update hash table, for exa: for key 'a' enter lo... |
3,502,530 | Using Visual Studio project properties effectively for multiple projects and configurations | <p>I have always used Visual Studios built in GUI support for configuring my projects, often using property sheets so that several projects will use a common set.</p>
<p>One of my main gripes with this is managing multiple projects, configurations and platforms. If you just do everything with the main GUI (right click... | 3,503,738 | 7 | 1 | null | 2010-08-17 12:48:44.89 UTC | 59 | 2021-12-21 15:48:37.14 UTC | 2015-01-12 16:01:52.947 UTC | null | 11,343 | null | 6,266 | null | 1 | 70 | c++|visual-studio-2010|visual-studio|build|projects-and-solutions | 37,251 | <p>I just found out somthing I didnt think was possible (it is not exposed by the GUI) that helps make property sheet far more useful. The "Condition" attribute of many of the tags in the project property files and it can be used in the .props files as well!</p>
<p>I just put together the following as a test and it wo... |
3,567,835 | $(this).val() not working to get text from span using jquery | <p>Giving this html, i want to grab "August" from it when i click on it:</p>
<pre><code><span class="ui-datepicker-month">August</span>
</code></pre>
<p>i tried </p>
<pre><code>$(".ui-datepicker-month").live("click", function () {
var monthname = $(this).val();
alert(monthname);
});
</code></pre... | 3,567,845 | 7 | 0 | null | 2010-08-25 15:55:01.683 UTC | 18 | 2019-10-10 02:32:48.953 UTC | 2019-10-10 02:32:48.953 UTC | null | 85,950 | null | 4,653 | null | 1 | 110 | jquery|html | 270,499 | <p>Instead of <a href="http://api.jquery.com/val/" rel="noreferrer"><code>.val()</code></a> use <a href="http://api.jquery.com/text/" rel="noreferrer"><code>.text()</code></a>, like this:</p>
<pre><code>$(".ui-datepicker-month").live("click", function () {
var monthname = $(this).text();
alert(monthname);
});... |
3,626,752 | Key existence check in HashMap | <p>Is checking for key existence in HashMap always necessary?</p>
<p>I have a HashMap with say a 1000 entries and I am looking at improving the efficiency.
If the HashMap is being accessed very frequently, then checking for the key existence at every access will lead to a large overhead. Instead if the key is not pres... | 3,626,779 | 11 | 1 | null | 2010-09-02 11:45:16.013 UTC | 68 | 2022-06-14 07:58:22.5 UTC | 2010-09-02 11:53:09.52 UTC | null | 150,505 | null | 150,505 | null | 1 | 355 | java|hashmap | 577,870 | <p>Do you ever store a null value? If not, you can just do:</p>
<pre><code>Foo value = map.get(key);
if (value != null) {
...
} else {
// No such key
}
</code></pre>
<p>Otherwise, you <em>could</em> just check for existence if you get a null value returned:</p>
<pre><code>Foo value = map.get(key);
if (value ... |
4,116,001 | Android Lock Screen Widget | <p>A few users have been asking me Android lock screen widgets for my app - I believe they want a widget that stays on their lock screens and allows them to interact with the app.</p>
<p>I haven't been able to find any official documentation for this - the only thing I found was apps that will take home screen widgets... | 4,666,109 | 3 | 7 | null | 2010-11-07 00:57:40.653 UTC | 68 | 2016-09-07 15:09:40.547 UTC | 2012-10-16 01:57:08.17 UTC | null | 1,665,345 | null | 106,095 | null | 1 | 79 | android|android-widget|lockscreen | 78,671 | <p>Lock screen interaction is difficult. Android allows basic operations with two window flags (FLAG_SHOW_WHEN_LOCKED and FLAG_DISMISS_KEYGUARD). FLAG_SHOW_WHEN_LOCKED works pretty consistently in that it will show on top of the lock screen even when security is enabled (the security isn't bypassed, you can't switch to... |
4,228,739 | VS2010 + Oracle driver: ORA-12154: TSN:could not resolve the connect identifier specified | <p>I am using:</p>
<ul>
<li>Visual Studio 2010</li>
<li>.Net Framework Data Provider for Oracle</li>
<li>Oracle Developer Tools for Visual Studio (from Oracle's website)</li>
</ul>
<p>I tried installing 'Oracle Developer Tools for Visual Studio' and created tnsnames.ora and sqlnet.ora files in my C:\app\ [my username... | 7,919,008 | 4 | 0 | null | 2010-11-19 19:40:21.553 UTC | null | 2015-06-19 20:28:12.293 UTC | null | null | null | null | 386,806 | null | 1 | 3 | .net|visual-studio|oracle|driver | 40,497 | <p>The best solution I found was to use the Oracle Data Access Client library, and include the entire TNS names entry in the connection string. This allows the project to be easily published to a web server, ClickOnce, etc. </p>
<p>Here are the steps necessary to set up the Oracle driver working in your project:</p>
... |
4,255,308 | Building a multidimensional array in vb.net | <p>I'm trying to build up a multidimensional array which will hold two bits of info for each record in a database e.g. id, description.</p>
<p>This is what I am currently doing.</p>
<pre><code>Dim mArray(,) As String
Dim i As Integer = 0
While cmdReader.Read()
mArray(i,0) = cmdReader.Item("id")
mArray(i,1) = ... | 4,255,327 | 5 | 0 | null | 2010-11-23 10:58:47.49 UTC | 3 | 2018-11-21 11:14:43.993 UTC | null | null | null | null | 189,154 | null | 1 | 10 | vb.net|multidimensional-array|while-loop | 89,763 | <p>Why not rather make use of <a href="http://msdn.microsoft.com/en-us/library/6sh2ey19.aspx" rel="noreferrer">List Class</a> and <a href="http://msdn.microsoft.com/en-us/library/xfhwa508.aspx" rel="noreferrer">Dictionary Class</a></p>
<p>You can rather then create a List of Dictionaries, with the key and value both s... |
4,200,172 | C, socket programming: Connecting multiple clients to server using select() | <p>I'm trying to make a server that can be connected to by multiple clients. Here's my code so far:</p>
<p>Client:</p>
<pre><code>int main(int argc, char **argv) {
struct sockaddr_in servaddr;
int sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (sock == -1) perror("Socket");
bzero((void *) &servad... | 4,200,467 | 5 | 0 | null | 2010-11-16 23:41:04.82 UTC | 9 | 2018-02-11 19:42:16.033 UTC | 2015-01-01 01:03:20.923 UTC | null | 4,186,297 | null | 506,678 | null | 1 | 13 | c|sockets|network-programming|client|select-function | 39,734 | <p>Two issues in your code:</p>
<ul>
<li><p>You should do <code>recv(i, ...)</code> instead of <code>recv(clientsock[i], ...)</code></p></li>
<li><p>After that you do not check if <code>recv()</code> failed, and therefore <code>printf()</code> prints out the uninitialised buffer <code>message</code>, hence the garbage... |
4,614,331 | Using volatile keyword with mutable object | <p>In Java, I understand that <code>volatile</code> keyword provides visibility to variables. The question is, if a variable is a reference to a mutable object, does <code>volatile</code> also provide visibility to the members inside that object?</p>
<p>In the example below, does it work correctly if multiple threads a... | 4,629,148 | 5 | 2 | null | 2011-01-06 11:19:52.74 UTC | 8 | 2022-06-23 07:19:18.92 UTC | 2022-06-23 07:19:18.92 UTC | null | 168,986 | null | 277,422 | null | 1 | 32 | java|concurrency|volatile|mutable | 11,049 | <p>This is sort of a side note explanation on some of the details of volatile. Writing this here because it is too much for an comment. I want to give some examples which show how volatile affects visibility, and how that changed in jdk 1.5.</p>
<p>Given the following example code:</p>
<pre><code>public class MyCla... |
4,664,229 | Here document as an argument to bash function | <p>Is it possible to pass a here document as a bash function argument, and in the function have the parameter preserved as a multi-lined variable?</p>
<p>Something along the following lines:</p>
<pre><code>function printArgs {
echo arg1="$1"
echo -n arg2=
cat <<EOF
$2
EOF
}
printArgs 17 <<EOF
18
19
EOF
<... | 4,665,893 | 5 | 0 | null | 2011-01-12 00:26:12.907 UTC | 7 | 2018-01-31 07:08:27.357 UTC | null | null | null | null | 572,058 | null | 1 | 48 | bash|function|shell|arguments|heredoc | 17,721 | <p>If you're not using something that will absorb standard input, then you will have to supply something that does it:</p>
<pre><code>$ foo () { while read -r line; do var+=$line; done; }
$ foo <<EOF
a
b
c
EOF
</code></pre> |
4,743,115 | How do I use bitwise operators on a "double" on C++? | <p>I was asked to get the internal binary representation of different types in C. My program currently works fine with 'int' but I would like to use it with "double" and "float". My code looks like this:</p>
<pre><code>template <typename T>
string findBin(T x) {
string binary;
for(int i = 4096 ; i >= 1; i/=2)... | 4,743,141 | 6 | 3 | null | 2011-01-20 03:16:51.53 UTC | 2 | 2019-08-20 01:55:27.143 UTC | 2011-01-20 03:28:09.89 UTC | null | 501,557 | null | 521,806 | null | 1 | 9 | c++|bitwise-operators | 40,893 | <p>Succinctly, you don't.</p>
<p>The bitwise operators do not make sense when applied to <code>double</code> or <code>float</code>, and the standard says that the bitwise operators (<code>~</code>, <code>&</code>, <code>|</code>, <code>^</code>, <code>>></code>, <code><<</code>, and the assignment vari... |
4,087,839 | OnEditorActionListener called twice with same eventTime on SenseUI keyboard | <p>On just one phone I am testing on (HTC Incredible, Android 2.2, Software 3.21.605.1), I am experiencing the following behavior.</p>
<p>The onEditorAction event handler is being called twice (immediately) when the Enter key on the Sense UI keyboard is pressed.</p>
<p>The KeyEvent.getEventTime() is the same for both... | 4,903,973 | 6 | 2 | null | 2010-11-03 14:06:23.23 UTC | 1 | 2019-07-16 08:58:28.983 UTC | 2011-02-16 16:53:00.68 UTC | null | 293,483 | null | 293,483 | null | 1 | 33 | android | 9,691 | <p>As mitch said, you have to check the event action:</p>
<pre><code>public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (event == null || event.getAction() != KeyEvent.ACTION_DOWN)
return false;
// do your stuff
return true;
}
</code></pre>
<p>This snippet works on both... |
4,060,405 | Is it possible to reference one CSS rule within another? | <p>For example if I have the following HTML:</p>
<pre><code><div class="someDiv"></div>
</code></pre>
<p>and this CSS:</p>
<pre><code>.opacity {
filter:alpha(opacity=60);
-moz-opacity:0.6;
-khtml-opacity: 0.6;
opacity: 0.6;
}
.radius {
border-top-left-radius: 15px;
border-top-rig... | 4,060,413 | 6 | 4 | null | 2010-10-30 19:53:52.303 UTC | 12 | 2020-04-10 17:41:02.61 UTC | 2014-05-19 18:06:28.213 UTC | null | 106,224 | null | 491,928 | null | 1 | 114 | css | 176,424 | <p>No, you cannot reference one rule-set from another.</p>
<p>You can, however, reuse selectors on multiple rule-sets within a stylesheet <em>and</em> use multiple selectors on a single rule-set (by <a href="http://www.w3.org/TR/CSS21/selector.html#grouping" rel="noreferrer">separating them with a comma</a>). </p>
<p... |
4,295,681 | Evil samples of subtly broken C++ code | <p>I need some samples of bad C++ code that will illustrate violation of good practices. I wanted to come up with my own examples, but I am having a hard time coming up with examples that are <em>not contrived, and where a trap is not immediately obvious</em> (it's harder than it seems).</p>
<p>Examples would be somet... | 4,295,704 | 8 | 8 | null | 2010-11-28 06:23:40.463 UTC | 23 | 2010-11-28 18:57:23.13 UTC | null | null | null | null | 23,643 | null | 1 | 40 | c++ | 11,283 | <p><a href="http://en.wikipedia.org/wiki/Most_vexing_parse" rel="noreferrer">The most vexing parse</a> is an amazingly counterintuitive result of the way C++ parses things like this:</p>
<pre><code>// Declares a function called "myVector" that returns a std::vector<float>.
std::vector<float> myVector();
/... |
4,661,557 | PIL rotate image colors (BGR -> RGB) | <p>I have an image where the colors are BGR. How can I transform my PIL image to swap the B and R elements of each pixel in an efficient manner?</p> | 4,661,652 | 13 | 0 | null | 2011-01-11 19:06:16.837 UTC | 22 | 2022-03-08 21:22:01.993 UTC | null | null | null | null | 15,055 | null | 1 | 71 | python|colors|python-imaging-library | 122,235 | <p>Assuming no alpha band, isn't it as simple as this?</p>
<pre><code>b, g, r = im.split()
im = Image.merge("RGB", (r, g, b))
</code></pre>
<p>Edit:</p>
<p>Hmm... It seems PIL has a few bugs in this regard... <code>im.split()</code> doesn't seem to work with recent versions of PIL (1.1.7). It may (?) still work wit... |
4,653,236 | Unable to start debugging on the web server. Could not start ASP.NET debugging VS 2010, II7, Win 7 x64 | <p>I am running Visual Studio 2010 (as Admin), IIS 7 on Windows 7 x64.
I am able to run the ASP.NET web site in IIS 7 without debugging just fine, but when I press F5 to debug it, I get:</p>
<blockquote>
<p>Unable to start debugging on the web server. Could not start ASP.NET debugging. More information may be availa... | 4,685,878 | 31 | 6 | null | 2011-01-11 01:07:10.657 UTC | 32 | 2015-09-17 18:30:47.013 UTC | 2012-05-30 08:09:29.88 UTC | null | 41,956 | null | 114,472 | null | 1 | 92 | asp.net|.net|visual-studio-2010|iis-7|visual-studio-debugging | 199,030 | <p>Turns out that the culprit was the IIS <strong>Url Rewrite</strong> module. I had defined a rule that redirected calls to <strong>Default.aspx</strong> (which was set as the <strong>start page of the web site</strong>) to the root of the site so that I could have a canonical home URL. However, apparently VS had a pr... |
14,794,556 | Excel VBA - Pass a Row of Cell Values to an Array and then Paste that Array to a Relative Reference of Cells | <p>Using Excel (2010) VBA, I am trying to copy (pass) a constant range of cells (whose values recalculate) to an array. Then I am trying to pass that array to a new range of cells, directly below it. After I have done this, I want to again copy (pass) the constant range's new values to the array, and pass these new v... | 14,794,645 | 4 | 2 | null | 2013-02-10 03:58:29.99 UTC | 3 | 2017-07-22 22:03:33.373 UTC | null | null | null | null | 1,352,561 | null | 1 | 10 | arrays|excel|vba | 107,080 | <p>You are off slightly on a few things here, so hopefully the following helps.</p>
<p>Firstly, you don't need to select ranges to access their properties, you can just specify their address etc. Secondly, unless you are manipulating the values within the range, you don't actually need to set them to a variant. If y... |
14,539,992 | Pandas Drop Rows Outside of Time Range | <p>I am trying to go through every row in a DataFrame index and remove all rows that are not between a certain time.</p>
<p>I have been looking for solutions but none of them separate the Date from the Time, and all I want to do is drop the rows that are outside of a Time range.</p> | 14,540,509 | 3 | 0 | null | 2013-01-26 18:15:35.187 UTC | 8 | 2021-03-11 13:19:31.977 UTC | null | null | null | null | 546,624 | null | 1 | 18 | python|pandas | 20,013 | <p>You can use the <a href="https://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.between_time.html" rel="noreferrer"><code>between_time</code></a> function directly:</p>
<pre><code>ts.between_time(datetime.time(18), datetime.time(9), include_start=False, include_end=False)
</code></pre>
<hr>
<p><e... |
14,642,985 | Type safety: Unchecked cast from Object to List<MyObject> | <p>I have a ListView listing a custom object (let's say <code>MyObject</code>).</p>
<p>I want to filter it dynamically through an <code>EditText</code> so I had to implement a <code>getFilter()</code> with a publishResults method: </p>
<pre><code>@Override
protected void publishResults(CharSequence constraint, Filter... | 14,645,590 | 4 | 1 | null | 2013-02-01 09:16:12 UTC | 4 | 2016-03-24 01:19:36.76 UTC | 2015-12-15 01:31:31.803 UTC | null | 51,683 | null | 1,178,445 | null | 1 | 26 | android|listview|casting|filter|custom-object | 55,175 | <p>Well, I finally managed to find a solution.</p>
<p>Just as @Medo42 said:</p>
<blockquote>
<p>Another option is to check for and cast to List as the instanceof
error suggests. Then you can iterate over the elements in the list and
check if they are actually all instances of MyObject, and copy them to
a new ... |
14,760,496 | UICollectionView automatically scroll to bottom when screen loads | <p>I'm trying to figure out how to scroll all the way to the bottom of a UICollectionView when the screen first loads. I'm able to scroll to the bottom when the status bar is touched, but I'd like to be able to do that automatically when the view loads as well. The below works fine if I want to scroll to the bottom whe... | 14,763,881 | 9 | 2 | null | 2013-02-07 20:35:06.67 UTC | 5 | 2021-01-14 22:24:23.287 UTC | 2013-02-10 01:26:26.48 UTC | null | 1,429,262 | null | 1,253,907 | null | 1 | 34 | ios|objective-c|uiscrollview|uicollectionview | 39,287 | <p>Just to elaborate on my comment.</p>
<p>viewDidLoad is called before elements are visual so certain UI elements cannot be manipulated very well. Things like moving buttons around work but dealing with subviews often does not (like scrolling a CollectionView).</p>
<p>Most of these actions will work best when called... |
14,386,994 | Chrome >=24 - how to dock devtools to the right? | <p>I like docking devtools to the right. I remember how happy I was when I first saw that option when I realized I no longer have to split screen and position windows manually.</p>
<p>Recent versions of chrome that option seems to be missing. Even on my installs where I already have devtools on the right the option is... | 14,387,041 | 1 | 3 | null | 2013-01-17 19:52:14.607 UTC | 15 | 2015-10-22 04:39:45.087 UTC | null | null | null | null | 5,056 | null | 1 | 112 | google-chrome-devtools | 22,502 | <p>If you click and hold on the icon in the top right next to the close icon (Undock into separate window button), you are given the option to dock it to the right. See screenshot:</p>
<p><img src="https://i.imgur.com/fM5wwzU.png" alt="Dock to right"></p>
<p>Starting in Chrome 41, you are able to use <kbd>Ctrl</kbd> ... |
14,846,920 | Collections.emptyMap() vs new HashMap() | <p>What are some of the situations where I can use <code>Collections.emptyMap()</code> ? The Documentation says I can use this method if I want my collection to be immutable. </p>
<p><strong>Why would I want an immutable empty collection? What is the point?</strong></p> | 14,846,960 | 9 | 4 | null | 2013-02-13 05:23:59.663 UTC | 26 | 2015-06-15 10:49:43.813 UTC | 2013-02-14 04:43:05.33 UTC | null | 942,391 | null | 571,718 | null | 1 | 156 | java|collections | 59,421 | <p>From <strong>Effective Java</strong>, <strong>Item #43</strong> - <code>"Return empty arrays or collections, not null"</code> demonstrates returning an empty collection and perhaps even demonstrates using these <code>emptyList()</code>, <code>emptySet()</code>, and <code>emptyMap()</code> methods on the Collections... |
45,615,621 | Spark column string replace when present in other column (row) | <p>I would like to remove strings from <code>col1</code> that are present in <code>col2</code>:</p>
<pre><code>val df = spark.createDataFrame(Seq(
("Hi I heard about Spark", "Spark"),
("I wish Java could use case classes", "Java"),
("Logistic regression models are neat", "models")
)).toDF("sentence", "label")
</code><... | 45,615,779 | 2 | 0 | null | 2017-08-10 13:48:44.98 UTC | 2 | 2018-04-23 11:41:39.51 UTC | null | null | null | null | 4,666,785 | null | 1 | 13 | scala|apache-spark|user-defined-functions | 50,039 | <p>You could simply use <code>regexp_replace</code></p>
<pre><code>df5.withColumn("sentence_without_label", regexp_replace($"sentence" , lit($"label"), lit("" )))
</code></pre>
<p>or you can use simple udf function as below </p>
<pre><code>val df5 = spark.createDataFrame(Seq(
("Hi I heard about Spark", "Spark"),
... |
2,743,866 | Scala return type for tuple-functions | <p>I want to make a scala function which returns a scala tuple.</p>
<p>I can do a function like this:</p>
<pre><code>def foo = (1,"hello","world")
</code></pre>
<p>and this will work fine, but now I want to tell the compiler what I expect to be returned from the function instead of using the built in type inference ... | 2,744,040 | 2 | 2 | null | 2010-04-30 10:38:01.89 UTC | 6 | 2017-03-24 19:11:24.437 UTC | 2013-08-06 20:39:29.59 UTC | user212218 | null | null | 238,100 | null | 1 | 43 | function|scala|types|return|tuples | 45,925 | <pre><code>def foo : (Int, String, String) = (1, "Hello", "World")
</code></pre>
<p>The compiler will interpret the type <code>(Int, String, String)</code> as a <code>Tuple3[Int, String, String]</code></p> |
1,921,627 | Multiple insert/update statements inside trigger? | <p>Just a quick question that no doubt someone out there will know the answer to.</p>
<p>I need to be able to do multiple insert/updates within a trigger. Every attempt ends with failure :(</p>
<pre><code>DROP TRIGGER IF EXISTS `Insert_Article`//
CREATE TRIGGER `Insert_Article` AFTER INSERT ON `Article`
FOR EACH ROW... | 1,921,657 | 1 | 0 | null | 2009-12-17 13:00:02.767 UTC | 8 | 2009-12-17 13:03:51.927 UTC | null | null | null | null | 55,859 | null | 1 | 24 | mysql|database|triggers | 41,381 | <p>From the docs: <a href="http://dev.mysql.com/doc/refman/5.0/en/create-trigger.html" rel="noreferrer">Create Trigger Syntax</a></p>
<blockquote>
<p>trigger_stmt is the statement to
execute when the trigger activates. If
you want to execute multiple
statements, use the BEGIN ... END
compound statement con... |
21,813,122 | Changing content of class using Javascript | <p>I started reading JavaScript in W3schools and testing out/changing few things in the examples they give so I can see what is doing what but didn't manage to identify the syntax, yet.</p>
<p>Below is the original code to change p tag content, <em>the <a href="http://www.w3schools.com/js/tryit.asp?filename=tryjs_int... | 21,813,274 | 3 | 0 | null | 2014-02-16 15:23:12.22 UTC | 2 | 2019-01-31 07:16:13.947 UTC | 2019-01-31 07:16:13.947 UTC | null | 7,473,844 | null | 3,104,214 | null | 1 | 13 | javascript|html|onclick|tags | 54,626 | <p>Your x - is array of elements. try to use loop:</p>
<pre><code><body>
<p class="demo">JavaScript can change the content of an HTML element.</p>
<p class="demo">Yolo</p>
<button type="button" onclick="myFunction()">Click Me!</button>
<script>
function... |
26,777,083 | How to implement REST token-based authentication with JAX-RS and Jersey | <p>I'm looking for a way to enable token-based authentication in Jersey. I am trying not to use any particular framework. Is that possible?</p>
<p>My plan is: A user signs up for my web service, my web service generates a token, sends it to the client, and the client will retain it. Then the client, for each request, w... | 26,778,123 | 2 | 0 | null | 2014-11-06 10:26:27.133 UTC | 574 | 2021-09-22 20:57:49.053 UTC | 2021-09-22 20:57:49.053 UTC | null | 2,756,409 | null | 4,120,466 | null | 1 | 503 | java|rest|authentication|jax-rs|jersey-2.0 | 393,793 | <h2>How token-based authentication works</h2>
<p>In token-based authentication, the client exchanges <em>hard credentials</em> (such as username and password) for a piece of data called <em>token</em>. For each request, instead of sending the hard credentials, the client will send the token to the server to perform aut... |
38,610,723 | How to insert a pandas dataframe to an already existing table in a database? | <p>I'm using <code>sqlalchemy</code> in pandas to query postgres database and then insert results of a transformation to another table on the same database. But when I do
<code>df.to_sql('db_table2', engine)</code> I get this error message:
<code>ValueError: Table 'db_table2' already exists.</code> I noticed it want t... | 38,610,751 | 2 | 0 | null | 2016-07-27 10:43:23.417 UTC | 17 | 2019-12-24 08:33:28.193 UTC | 2018-01-22 21:51:18.19 UTC | null | 395,857 | null | 1,102,806 | null | 1 | 52 | python|database|pandas|dataframe | 115,030 | <p>make use of <a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.to_sql.html" rel="noreferrer">if_exists</a> parameter:</p>
<pre><code>df.to_sql('db_table2', engine, if_exists='replace')
</code></pre>
<p>or</p>
<pre><code>df.to_sql('db_table2', engine, if_exists='append')
</code></pre>
... |
40,391,717 | react-native-keyboard-aware-scroll-view not working properly | <p>I am trying to use the react-native-keyboard-aware-scroll-view so the keyboard doesn't cover my inputs. </p>
<p>For some reason it always thinks there is a keyboard active I guess because it always compresses everything.</p>
<p>Attached is a picture of what is happening as well as the code. Any chance anyone has ... | 40,410,908 | 11 | 0 | null | 2016-11-02 23:52:25.333 UTC | 2 | 2022-09-11 22:10:31.46 UTC | 2016-11-03 00:04:19.96 UTC | null | 6,726,798 | null | 6,726,798 | null | 1 | 12 | android|ios|user-interface|reactjs|react-native | 43,578 | <p>I solved this problem by using another lib. Not sure why the react-native-keyboard-aware-scroll-view doesn't work but if you implement the react-native-keyboard-aware-view you shouldn't have any problems. </p>
<p><a href="https://www.npmjs.com/package/react-native-keyboard-aware-view" rel="noreferrer">https://ww... |
65,985,507 | Why shouldn't I use catch() to handle errors in React useEffect API calls? | <p>On this page of the React docs:</p>
<p><a href="https://reactjs.org/docs/faq-ajax.html" rel="noreferrer">https://reactjs.org/docs/faq-ajax.html</a></p>
<p>A code comment says...</p>
<blockquote>
<p>Note: it's important to handle errors here instead of a catch() block so that we don't swallow exceptions from actual b... | 65,989,940 | 2 | 0 | null | 2021-01-31 23:54:51.563 UTC | 5 | 2021-02-01 13:12:21.697 UTC | 2021-02-01 00:06:20.463 UTC | null | 6,243,352 | null | 9,274,894 | null | 1 | 33 | reactjs|react-hooks|use-effect | 8,540 | <p>It is a copy-and-paste error of the example's author.
The first example uses the component state of a class based component: <code>this.setState()</code> causes a synchronous re-render (or at least this was the case with react v15.0 in 2016, not sure if it holds true today). Therefore the warning comment and the use... |
36,095,496 | Angular 2: How to write a for loop, not a foreach loop | <p>Using Angular 2, I want to duplicate a line in a template multiple times. Iterating over an object is easy, <code>*ngFor="let object of objects"</code>. However, I want to run a simple <code>for</code> loop, not a <code>foreach</code> loop. Something like (pseudo-code):</p>
<pre><code>{for i = 0; i < 5;... | 38,249,801 | 11 | 0 | null | 2016-03-18 22:47:19.253 UTC | 9 | 2022-08-01 14:50:33.42 UTC | 2020-10-03 03:58:59.297 UTC | null | 3,357,958 | null | 3,357,958 | null | 1 | 83 | angular|angular2-template | 269,612 | <p>You can instantiate an empty array with a given number of entries if you pass an <code>int</code> to the <code>Array</code> constructor and then iterate over it via <code>ngFor</code>.</p>
<p><strong>In your component code :</strong></p>
<pre><code>export class ForLoop {
fakeArray = new Array(12);
}
</code></pre... |
45,842,167 | How to use DatePickerDialog in Kotlin? | <p>In Java an DatePickerDialog can be use such as:</p>
<pre><code>final Calendar c = Calendar.getInstance();
int year = c.get(Calendar.YEAR);
int month = c.get(Calendar.MONTH);
int day = c.get(Calendar.DAY_OF_MONTH);
DatePickerDialog dpd = new DatePickerDialog(getActivity(),new DatePickerDialog.OnDateSetListener()
{... | 45,844,018 | 7 | 0 | null | 2017-08-23 14:11:32 UTC | 6 | 2020-06-07 22:05:57.147 UTC | null | null | null | null | 8,006,185 | null | 1 | 46 | kotlin|datepickerdialog | 62,209 | <p>It would look something like this:</p>
<pre><code>val c = Calendar.getInstance()
val year = c.get(Calendar.YEAR)
val month = c.get(Calendar.MONTH)
val day = c.get(Calendar.DAY_OF_MONTH)
val dpd = DatePickerDialog(activity, DatePickerDialog.OnDateSetListener { view, year, monthOfYear, dayOfMonth ->
// Disp... |
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