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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
33,208,518 | Difference between 0x0A and 0x0D | <p>I was studying about bluetooth and I was trying to write the code to keep listening to the input stream while connected and i came across this following code snippet:</p>
<pre><code>int data = mmInStream.read();
if(data == 0x0A) {
} else if(data == 0x0D) {
buffer = new byte[a... | 33,208,588 | 3 | 1 | null | 2015-10-19 07:07:58.14 UTC | 4 | 2022-07-01 08:13:28.193 UTC | 2015-10-19 07:24:58.59 UTC | null | 5,199,989 | null | 5,350,816 | null | 1 | 14 | java|bluetooth|hex|character|buffer | 61,396 | <p>The values starting <code>0x</code> are hexadecimals. <code>0x0A</code> is <code>\n</code> newline character and <code>0x0D</code> is <code>\r</code> return character. You can read more about how to convert them <a href="http://www.javamex.com/tutorials/conversion/decimal_hexadecimal.shtml" rel="noreferrer">here</a>... |
9,225,300 | denyhosts keeps adding back my IP | <p>I am trying to unblock an IP from which I was doing some tests. I have followed the tutorials on the net:</p>
<pre><code>$ sudo /etc/init.d/denyhosts stop
$ sudo vim /etc/deny.hosts
[remove the last line where I can see my IP to clear]
$ cd /var/lib/denyhosts/
$ sudo vim *
[remove any occurences of my IP to clear]
... | 11,634,558 | 9 | 0 | null | 2012-02-10 09:10:03.177 UTC | 16 | 2020-05-19 23:44:22.543 UTC | null | null | null | null | 136,285 | null | 1 | 24 | ssh | 37,275 | <p>The instructions to remove an entry for denyhosts can be found here: <a href="http://www.cyberciti.biz/faq/linux-unix-delete-remove-ip-address-that-denyhosts-blocked/">http://www.cyberciti.biz/faq/linux-unix-delete-remove-ip-address-that-denyhosts-blocked/</a>. In Ubuntu the denyhosts data files are located at <code... |
9,205,000 | bash: defining a file-local variable invisible to sourcing script | <p>Say I have a bash script file <code>config.sh</code>. It's meant to be source'd by other scripts and variables defined is used as customization of the upper-level scripts.</p>
<p>The problem is, if <code>config.sh</code> has a temporary variable and its name conflicts with upper-level scripts' variable, it breaks t... | 9,205,183 | 4 | 0 | null | 2012-02-09 03:25:38.407 UTC | 6 | 2012-02-09 23:04:09.887 UTC | null | null | null | null | 402,996 | null | 1 | 33 | bash | 9,565 | <p>A trick I learned from the <a href="http://en.gentoo-wiki.com/wiki/Keychain" rel="noreferrer"><code>keychain</code></a> utility is using one program to build a <code>source</code>-able file containing just the variables that you want to export from your program. You could modify your script to <code>echo</code> the ... |
10,694,661 | document.getElementById().value return undefined in chrome | <pre><code><div id="hour" style="display: none">2</div>
</code></pre>
<p>JavaScript code:</p>
<pre><code><script type="text/javascript">
var _h = document.getElementById('hour').value
alert(_h);
</script>
</code></pre>
<p>Chrome returns <code>undefined</code>. What is the problem?</p> | 10,694,721 | 4 | 1 | null | 2012-05-22 01:23:02.26 UTC | 7 | 2021-02-05 01:35:09.8 UTC | 2015-07-30 13:12:18.39 UTC | null | 1,015,495 | null | 1,368,957 | null | 1 | 14 | javascript | 59,179 | <p>The <code>.value</code> property applies to form elements (inputs), not divs. The simplest way to get the contents of your div element is with <code>.innerHTML</code>:</p>
<pre><code>document.getElementById('hour').innerHTML;
</code></pre> |
10,828,863 | What is the use of Custom Class Loader | <p>Recently I came accross the java custom class loader api. I found one use over here, <a href="http://kamranzafar.org/weblog/2006/12/25/loading-classes-directly-from-jar-files/" rel="noreferrer">kamranzafar's blog</a>
I am a bit new to the class loader concept. Can any one explain in detail, what are the different sc... | 10,829,369 | 3 | 1 | null | 2012-05-31 07:02:33.06 UTC | 15 | 2020-06-11 15:29:16.03 UTC | 2015-12-21 07:41:14.447 UTC | null | 1,207,049 | null | 1,392,956 | null | 1 | 28 | java|classloader | 15,513 | <p>Custom class loaders are useful in larger architectures consisting of several module/applications. Here are the advantages of the custom class loader:</p>
<ul>
<li><strong>Provides Modular architecture</strong> Allows to define multiple class loader allowing modular architecture.</li>
<li><strong>Avoiding conflicts... |
22,512,992 | How to use the 'main' parameter in package.json? | <p>I have done quite some search already. However, still having doubts about the 'main' parameter in the package.json of a Node project.</p>
<ol>
<li>How would filling in this field help? Asking in another way, can I start the module in a different style if this field presents?</li>
<li>Can I have more than one script ... | 22,513,200 | 8 | 1 | null | 2014-03-19 16:59:26.96 UTC | 41 | 2022-08-21 14:14:04.983 UTC | 2022-08-21 14:14:04.983 UTC | null | 4,344,438 | null | 2,621,216 | null | 1 | 218 | javascript|node.js|rest|asynchronous | 154,455 | <p>From <a href="https://docs.npmjs.com/files/package.json#main">the npm documentation</a>:</p>
<blockquote>
<p>The main field is a module ID that is the primary entry point to your
program. That is, if your package is named foo, and a user installs
it, and then does require("foo"), then your main module's expor... |
22,621,754 | How can I merge two maps in go? | <p>I have a recursive function that creates objects representing file paths (the keys are paths and the values are info about the file). It's recursive as it's only meant to handle files, so if a directory is encountered, the function is recursively called on the directory.</p>
<p>All that being said, I'd like to do t... | 22,621,838 | 5 | 2 | null | 2014-03-24 22:17:51.03 UTC | 12 | 2022-07-17 13:01:23.257 UTC | 2022-05-17 12:55:17.567 UTC | null | 2,541,573 | null | 301,749 | null | 1 | 115 | dictionary|go|union | 112,966 | <p>There is no built in way, nor any method in the standard packages to do such a merge.</p>
<p>The idomatic way is to simply iterate:</p>
<pre><code>for k, v := range b {
a[k] = v
}
</code></pre> |
31,790,344 | Determine if a point reside inside a leaflet polygon | <p>Suppose I Draw a polygan using leaflet like in the follow demo:
<a href="http://leaflet.github.io/Leaflet.draw/" rel="noreferrer">http://leaflet.github.io/Leaflet.draw/</a></p>
<p>My question is how I can determine if a given point reside inside the polygon or not.</p> | 31,813,714 | 3 | 2 | null | 2015-08-03 14:47:31.583 UTC | 14 | 2019-10-02 17:53:43.017 UTC | 2015-08-04 16:25:15.183 UTC | null | 725,573 | null | 5,084,891 | null | 1 | 29 | leaflet|polygon|point-in-polygon | 29,835 | <p>Use the Ray Casting algorithm for checking if a point (marker) lies inside of a polygon:</p>
<pre><code>function isMarkerInsidePolygon(marker, poly) {
var polyPoints = poly.getLatLngs();
var x = marker.getLatLng().lat, y = marker.getLatLng().lng;
var inside = false;
for (var i = 0, j = polyP... |
37,054,469 | Nuget Package - feed (VSTS) :Exception 'System.AggregateException' thrown when trying to add source | <p>I have created a new feed with in Package Release hub (VSTS), installed the credentials, then added the package source. </p>
<p>Now, I am using Visual Studio 2015 to install Micrososft.Aspnet.mvc to a project, however it gives the following error:</p>
<pre><code>Exception 'System.AggregateException' thrown when tr... | 37,154,554 | 13 | 2 | null | 2016-05-05 15:29:42.68 UTC | 6 | 2021-12-28 10:58:47.77 UTC | 2018-09-11 21:39:08.64 UTC | null | -1 | null | 1,682,401 | null | 1 | 47 | visual-studio|nuget|azure-devops|nuget-package|azure-artifacts | 41,415 | <p>I met this issue today and fix it by following:</p>
<p>If you have delete the feed from VSTS, then you need to delete it from VS\Tools\Options\Nuget Package Manager\Package Sources:
<a href="https://i.stack.imgur.com/ugH3F.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/ugH3F.jpg" alt="enter image descrip... |
17,742,651 | Column chart: how to show all labels on horizontal axis | <p>I've been trying to show all labels on the horizonal axis of my chart, but I haven't been able to do that!</p>
<p>I tried using <strong>hAxis.showTextEvery=1</strong> but does not work </p>
<p>(see <a href="https://developers.google.com/chart/interactive/docs/gallery/columnchart" rel="noreferrer">https://developer... | 17,747,324 | 2 | 2 | null | 2013-07-19 09:30:06.587 UTC | 5 | 2016-12-14 09:48:59.523 UTC | 2016-12-14 09:48:59.523 UTC | null | 2,560,293 | null | 2,560,293 | null | 1 | 15 | google-visualization | 48,489 | <p>Your problem is related to the continuous versus discrete subtleties in <a href="https://developers.google.com/chart/interactive/docs/gallery/columnchart" rel="noreferrer"><code>ColumnChart</code></a>. Basically, you have continuous values for labels on your <code>hAxis</code>, and the <code>showTextEvery</code> onl... |
17,710,209 | How to run make from Cygwin environment? | <p>I am trying to run linux driver on linux environment .. Following instruction to run winkvm .. stuck on point run make command using cygwin environment ..
like </p>
<ol>
<li><p>Building original KVM drivers using Cygwin environment:</p>
<p>cd kvm/kernel ## Do not type configure
make ## you will get id... | 17,710,292 | 2 | 0 | null | 2013-07-17 21:06:20.17 UTC | 1 | 2018-08-26 13:30:15.977 UTC | 2013-07-17 21:12:37.683 UTC | null | 827,263 | null | 2,593,158 | null | 1 | 31 | cygwin | 106,673 | <p>You have to install the <code>make</code> command.</p>
<p>Run the Cygwin installation/configuration program, <code>setup-x86_64.exe</code> or <code>setup-x86.exe</code> (you should already have it, downloaded from <a href="https://www.cygwin.com/install.html" rel="noreferrer">here</a>). When you get to the screen t... |
35,488,717 | Confused about conv2d_transpose | <p>I'm getting this error message when using <code>conv2d_transpose</code>:</p>
<pre><code>W tensorflow/core/common_runtime/executor.cc:1102] 0x7fc81f0d6250 Compute status: Invalid argument: Conv2DBackpropInput: Number of rows of out_backprop doesn't match computed: actual = 32, computed = 4
[[Node: generator/g_h1/co... | 38,059,483 | 2 | 1 | null | 2016-02-18 17:46:09.11 UTC | 11 | 2016-11-08 13:02:36.313 UTC | null | null | null | null | 307,401 | null | 1 | 22 | tensorflow | 22,875 | <p>Thanks for the question! You're exactly right---the problem is that the input and output dimensions being passed to tf.nn.conv2d_transpose don't agree. (The error may be detected when computing gradients, but the gradient computation isn't the problem.)</p>
<p>Let's look at just the first part of your code, and sim... |
3,290,283 | What is a good way to produce a random "site salt" to be used in creating password retrieval tokens? | <p>I would like to create a site-wide hash to be used as salt in creating password retrieval tokens. I have been bouncing around stackoverflow trying to get a sense of the best way to do this. </p>
<p>Here's the reset process:</p>
<p>When a user requests a password reset email the code generates a retrieval token:</p... | 3,291,689 | 1 | 7 | null | 2010-07-20 13:15:28.183 UTC | 17 | 2013-09-18 19:46:35.33 UTC | 2017-05-23 10:31:16.713 UTC | null | -1 | null | 225,014 | null | 1 | 15 | php|security|passwords|hash|password-protection | 11,222 | <p>To start with, your not talking about a salt. You're talking about a <a href="http://en.wikipedia.org/wiki/Cryptographic_nonce" rel="noreferrer">Cryptographic Nonce</a>, and when you salt a password you should use a Cryptographic Nonce. In the case of resetting passwords, it should be a random number that is st... |
28,032,092 | Shutdown netty programmatically | <p>I'm using netty 4.0.24.Final.</p>
<p>I need to start/stop netty server programmatically.<br>
On starting the server, the thread gets blocked at </p>
<p><code>f.channel().closeFuture().sync()</code> </p>
<p>Please help with some hints how to do it correctly.
Below is the EchoServer that is called by the Main class... | 28,034,689 | 3 | 1 | null | 2015-01-19 19:25:39.413 UTC | 11 | 2020-08-18 12:03:13.987 UTC | 2015-01-19 21:21:43.407 UTC | null | 2,996,265 | null | 2,674,027 | null | 1 | 17 | java|netty|server|shutdown | 19,237 | <p>One way is to make something like:</p>
<pre><code>// once having an event in your handler (EchoServerHandler)
// Close the current channel
ctx.channel().close();
// Then close the parent channel (the one attached to the bind)
ctx.channel().parent().close();
</code></pre>
<p>Doing this way will end up the following... |
2,054,669 | __OBJC__ in Objective-C | <p>What does <code>__OBJC__</code> mean in Objective-C?</p>
<pre><code>#import <Availability.h>
#ifdef __OBJC__
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
#endif
</code></pre> | 2,054,717 | 3 | 0 | null | 2010-01-13 05:33:58.203 UTC | 9 | 2022-04-27 11:10:44.607 UTC | 2022-04-27 11:10:44.607 UTC | null | 1,033,581 | null | 165,495 | null | 1 | 25 | objective-c | 14,101 | <p>This looks like your precompiled header file.</p>
<p>The precompiled header is shared between all C-dialect files in your project. It's as if all your .c, .cpp, .m and .mm files have an invisible #include directive as the first line. But the Cocoa header files are pure Objective C - trying to include them in a C/C+... |
2,127,836 | Ruby Print Inject Do Syntax | <p>Why is it that the following code runs fine</p>
<pre><code>p (1..1000).inject(0) { |sum, i|
sum + i
}
</code></pre>
<p>But, the following code gives an error</p>
<pre><code>p (1..1000).inject(0) do |sum, i|
sum + i
end
warning: do not use Fixnums as Symbols
in `inject': 0 is not a symbol (ArgumentError)
... | 2,127,854 | 3 | 0 | null | 2010-01-24 16:42:31.197 UTC | 7 | 2014-06-11 17:13:25.72 UTC | 2014-06-11 17:13:25.72 UTC | null | 1,227,991 | null | 84,399 | null | 1 | 30 | ruby|syntax|inject | 2,175 | <p>The block written using the curly braces binds to the inject method, which is what your intention is, and it will work fine. </p>
<p>However, the block that is encapsulated in the do/end block, will bind to the p-method. Because of this, the inject call does not have an associated block. In this case, inject will i... |
8,516,498 | Definition of a method signature? | <p>What is the correct definition of a method signature (or a signature of a method)?</p>
<p>On google, I find various definitions:</p>
<blockquote>
<p>It is the combination of the method name and the parameter list</p>
</blockquote>
<p>Does that mean <code>method signature = method name + argument list</code>? Th... | 8,521,944 | 7 | 1 | null | 2011-12-15 07:27:56.56 UTC | 10 | 2016-07-31 06:28:35.893 UTC | 2016-07-31 06:28:35.893 UTC | null | 3,375,713 | null | 529,310 | null | 1 | 24 | c#|method-signature | 33,427 | <p>There are a number of correct answer here which define the method signature as the method name, generic arity, formal parameter arity and formal parameter types and kinds, but <em>not</em> the return type or "params" modifier.</p>
<p>Though that is correct, there are some subtleties here. The way <em>the C# languag... |
8,924,896 | Java long number too large error? | <p>Why do I get an int number is too large where the long is assigned to min and max?</p>
<pre><code>/*
long: The long data type is a 64-bit signed two's complement integer.
It has a minimum value of -9,223,372,036,854,775,808 and a maximum value of 9,223,372,036,854,775,807 (inclusive).
Use this data type whe... | 8,924,925 | 2 | 1 | null | 2012-01-19 10:59:20.36 UTC | 3 | 2017-06-25 06:11:14.417 UTC | 2012-01-19 11:07:13.537 UTC | null | 418,556 | null | 604,864 | null | 1 | 26 | java | 58,602 | <p>All literal numbers in java are by default <code>ints</code>, which has range <code>-2147483648</code> to <code>2147483647</code> inclusive.</p>
<p>Your literals are outside this range, so to make this compile you need to indicate they're <code>long</code> literals (ie suffix with <code>L</code>):</p>
<pre><code>... |
8,399,184 | Convert dip to px in Android | <p>I had written method to get the pixels from dip but it is not working. It give me runtime error.</p>
<p>Actually I was running this method in separate class and initialized in my Activity class</p>
<pre><code>Board board = new Board(this);
board.execute(URL);
</code></pre>
<p>This code runs asynchronously. Please he... | 8,399,512 | 4 | 1 | null | 2011-12-06 11:28:58.683 UTC | 13 | 2022-02-11 15:47:40.497 UTC | 2022-02-11 15:10:28.79 UTC | null | 3,501,958 | null | 961,524 | null | 1 | 53 | android|density-independent-pixel | 59,652 | <p>The formula is: <strong>px = dp * (dpi / 160)</strong>, for having on a 160 dpi screen. See <em><a href="https://developer.android.com/training/multiscreen/screendensities#dips-pels" rel="nofollow noreferrer">Convert dp units to pixel units</a></em> for more information.</p>
<p>You could try:</p>
<pre><code>public s... |
19,785,001 | Custom Method Annotation using Jersey's AbstractHttpContextInjectable not Working | <p>I want to restrict some methods if they are being accessed in a non-secure manner. I'm creating a @Secure annotation that checks whether or not the request was sent over secure channels. However, I cannot create a method injectable that captures the HttpContext of the request.</p>
<pre><code>@Documented
@Retention(... | 20,618,954 | 3 | 2 | null | 2013-11-05 08:57:11.87 UTC | 10 | 2015-04-16 15:13:14.067 UTC | 2013-12-16 10:57:01.837 UTC | null | 320,124 | null | 320,124 | null | 1 | 8 | java|annotations|jersey|dropwizard | 12,556 | <p>If you don't want to use AOP, I think you can do this by implementing ResourceMethodDispatchProvider and ResourceMethodDispatchAdapter. </p>
<pre><code>public class CustomDispatchProvider implements ResourceMethodDispatchProvider {
ResourceMethodDispatchProvider provider;
CustomDispatchProvider(ResourceMethodDis... |
1,313,954 | plotting two vectors of data on a GGPLOT2 scatter plot using R | <p>I've been experimenting with both <code>ggplot2</code> and <code>lattice</code> to graph panels of data. I'm having a little trouble wrapping my mind around the <code>ggplot2</code> model. In particular, how do I plot a scatter plot with two sets of data on each panel:</p>
<p>in <code>lattice</code> I could do this... | 1,314,342 | 4 | 2 | null | 2009-08-21 19:58:39.49 UTC | 13 | 2019-04-15 19:48:23.85 UTC | 2019-04-15 19:48:17.51 UTC | null | 4,751,173 | null | 37,751 | null | 1 | 18 | r|plot|ggplot2|lattice | 32,735 | <p>Just following up on what Ian suggested: for ggplot2 you really want all the y-axis stuff in one column with another column as a factor indicating how you want to decorate it. It is easy to do this with <code>melt</code>. To wit:</p>
<pre><code>qplot(x_value, value,
data = melt(dd, measure.vars=c("Predicte... |
785,945 | Problem generating Java SOAP web services client with JDK tool wsimport from a WSDL generated by a .NET 2.0 application | <p>I'm trying to generate a client for some SOAP web services using the JDK 6 tool <code>wsimport</code>.
The WSDL was generated by a .NET 2.0 application. For .NET 3.X applications, it works fine.</p>
<p>When I run</p>
<pre><code>wsimport -keep -p mypackage http://myservice?wsdl
</code></pre>
<p>it shows several er... | 1,434,958 | 4 | 0 | null | 2009-04-24 13:54:37.7 UTC | 17 | 2017-08-13 20:12:12.66 UTC | 2009-04-24 14:27:49.057 UTC | null | 57,752 | null | 95,504 | null | 1 | 42 | java|.net|web-services|axis|wsimport | 38,029 | <p>I don't know if this was ever solved, but I spent some time googling for a solution to this same problem.</p>
<p>I found a fix here - <a href="https://jax-ws.dev.java.net/issues/show_bug.cgi?id=228" rel="noreferrer">https://jax-ws.dev.java.net/issues/show_bug.cgi?id=228</a></p>
<p>The solution is to run wsimport w... |
25,927,961 | Ensure unique field value in loopback model | <p>How to ensure uniqueness of a particular field in loopback model.
Like below is the model Post, I have a field genericId in it, I want it to be unique in the database, and loopback to through an error, on duplicate key insertion.</p>
<pre><code>{
"name": "Post",
"plural": "Post",
"base": "PersistedModel",
"... | 27,149,153 | 3 | 2 | null | 2014-09-19 06:48:51.487 UTC | 8 | 2019-10-09 21:14:39.457 UTC | 2014-09-19 07:05:13.897 UTC | null | 3,892,259 | null | 922,933 | null | 1 | 21 | json|node.js|strongloop|loopbackjs | 16,411 | <p>Set <a href="https://docs.strongloop.com/display/APIC/Validating+model+data" rel="noreferrer">validation</a> rule in your <code>common/models/post.js</code></p>
<pre><code>Post.validatesUniquenessOf('genericId');
</code></pre> |
30,747,892 | ''setup cannot find office.en-us\dwtrig20.exe'' | <p>During installation of Microsoft office 2010, I get the following error, which really confuses me:</p>
<blockquote>
<p>setup cannot find office.en-us\dwtrig20. </p>
</blockquote>
<p>When I choose the folder that the office.en-us where dwtrig.exe file located it displays invalid destination.</p> | 30,748,029 | 2 | 1 | null | 2015-06-10 05:37:44.237 UTC | null | 2018-04-30 20:18:47.2 UTC | 2015-06-16 13:11:37.283 UTC | null | 1,118,488 | user4993352 | null | null | 1 | 1 | office-2010 | 48,792 | <p>the reason that makes such ''setup cannot find office.en-us\dwtrig20.exe'' error is that it may have some some fragments from the previously existing Ms Office. </p>
<p>please fix it with Fixer <a href="http://go.microsoft.com/?linkid=9737366" rel="nofollow">click here</a> to download and install. follow the instr... |
32,422,593 | laravel BelongsTo relationship with different databases not working | <p>I've seen in several places to "stay away" from this, but alas - this is how my DB is built:</p>
<pre><code>class Album extends Eloquent {
// default connection
public function genre() {
return $this->belongsTo('genre');
}
</code></pre>
<p>and the Genre table:</p>
<pre><code>class Genre exten... | 33,222,754 | 12 | 4 | null | 2015-09-06 10:33:00.317 UTC | 5 | 2022-06-13 11:01:20.837 UTC | 2015-10-19 20:32:27.317 UTC | null | 1,503,710 | null | 1,503,710 | null | 1 | 31 | laravel | 30,214 | <p>This is my own solution and it works in general for me but its mega-complicated.</p>
<p>I'm using the builder "from" method to set the table and database correctly inside the subquery. I just need to pass the correct information inside.</p>
<p>Assume the subquery can be as complicated as "genres.sample" or even de... |
36,353,532 | Angular2 OPTIONS method sent when asking for http.GET | <p>I'm trying to add <a href="https://en.wikipedia.org/wiki/Basic_access_authentication#Client_side" rel="noreferrer">basic authentification</a> to my angular2 app.</p>
<pre><code>public login() {
// Set basic auth headers
this.defaultHeaders.set('Authorization', 'Basic ' + btoa(this.username + ':' + this.pass... | 36,353,822 | 2 | 3 | null | 2016-04-01 10:07:38.237 UTC | 20 | 2016-06-30 03:12:15.573 UTC | 2016-04-01 10:41:38.79 UTC | null | 3,611,519 | null | 1,935,318 | null | 1 | 53 | http|cors|angular | 98,174 | <p>This is the way CORS works (when using cross domain requests). With CORS, the remote Web application (here the one with domain mydomain.org) chooses if the request can be served thanks to a set of specific headers.</p>
<p>The CORS specification distinguishes two distinct use cases:</p>
<ul>
<li><strong>Simple requ... |
4,408,819 | Adding words to spellchecker dictionary in NetBeans? | <p>My NetBeans dictionary is kind of... illiterate? It's flagging words like "website" and the "doesn" part of <code>doesn't</code>. I right-clicked expecting to see your standard <code>Add to dictionary...</code> option but found none. I browsed the menus and also found nothing.</p>
<p>How do I educate my NetBeans sp... | 4,643,437 | 1 | 1 | null | 2010-12-10 12:28:38.273 UTC | 4 | 2012-07-28 00:39:18.403 UTC | null | null | null | null | 188,930 | null | 1 | 34 | netbeans|spell-checking | 8,562 | <p>It looks like the spell checker is a relatively recent addition. There are basic instructions on how to change the dictionary <a href="http://blogs.oracle.com/netbeansphp/entry/spellchecker" rel="noreferrer">here</a>. </p>
<p>Adding an unknown word to the dictionary requires <code>alt + enter</code> while the curso... |
25,426,780 | How to have stored properties in Swift, the same way I had on Objective-C? | <p>I am switching an application from Objective-C to Swift, which I have a couple of categories with stored properties, for example:</p>
<pre><code>@interface UIView (MyCategory)
- (void)alignToView:(UIView *)view
alignment:(UIViewRelativeAlignment)alignment;
- (UIView *)clone;
@property (strong) PFObject ... | 43,056,053 | 21 | 2 | null | 2014-08-21 12:48:42.887 UTC | 55 | 2022-06-21 10:59:18.747 UTC | 2016-10-30 22:33:06.877 UTC | null | 189,431 | null | 1,369,924 | null | 1 | 141 | ios|swift|associated-object | 128,168 | <p>Associated objects API is a bit cumbersome to use. You can remove most of the boilerplate with a helper class.</p>
<pre><code>public final class ObjectAssociation<T: AnyObject> {
private let policy: objc_AssociationPolicy
/// - Parameter policy: An association policy that will be used when linking o... |
25,194,631 | Is it possible to always show up/down arrows for input "number"? | <p>I want to always show up/down arrows for input "number" field. Is this possible? So far I haven't had any luck...<br><br>
<a href="http://jsfiddle.net/oneeezy/qunbnL6u/">http://jsfiddle.net/oneeezy/qunbnL6u/</a> </p>
<p><strong>HTML:</strong></p>
<pre><code><input type="number" />
</code></pre>
<p><strong>C... | 25,210,414 | 5 | 3 | null | 2014-08-08 01:06:51.503 UTC | 19 | 2022-05-05 06:00:16.18 UTC | null | null | null | null | 301,250 | null | 1 | 101 | html|css|input|webkit|shadow-dom | 115,085 | <p>You can achieve this (in Chrome at least) by using the Opacity property:</p>
<pre><code>input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
opacity: 1;
}
</code></pre>
<p>As stated above, this will likely only work in Chrome. So be careful using this code in the w... |
25,421,479 | Clang and undefined symbols when building a library | <p>I'm working on a C++ framework, and there's a few issues when I compile it on OSX with Clang.</p>
<p>First of, I'm using some other libraries, such as openssl, and clang complains that some symbols aren't solved when I build the library. They shouldn't be: these libraries will be linked with the final binary, it sh... | 25,442,543 | 3 | 3 | null | 2014-08-21 08:19:46.807 UTC | 10 | 2015-06-19 09:13:18.94 UTC | 2014-08-21 08:31:43.803 UTC | null | 626,921 | null | 626,921 | null | 1 | 15 | c++|cmake|clang | 20,978 | <p>Solved it ! Clang needs to receive the option <code>-undefined dynamic_lookup</code> to ignore missing symbols when compiling a library.</p>
<p>Add this to the CMakeFile.txt to produce the expected effect:</p>
<pre><code>if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
set(CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS "$... |
39,782,418 | Remove punctuations in pandas | <pre><code>code: df['review'].head()
index review
output: 0 These flannel wipes are OK, but in my opinion
</code></pre>
<p>I want to remove punctuations from the column of the dataframe and create a new column.</p>
<pre><code>code: import string
def remove_punctuations(text):
ret... | 39,782,973 | 3 | 2 | null | 2016-09-30 01:39:04.633 UTC | 10 | 2018-05-23 07:06:32.913 UTC | 2018-05-23 07:06:32.913 UTC | null | 4,909,087 | null | 5,927,701 | null | 1 | 25 | python|string|pandas|replace | 71,601 | <p>Using <a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.Series.str.replace.html" rel="noreferrer">Pandas str.replace</a> and regex:</p>
<pre><code>df["new_column"] = df['review'].str.replace('[^\w\s]','')
</code></pre> |
31,243,959 | Why doesn't click event always fire? | <p><em>If you're revisiting this question I've moved all the updates to the bottom so it actually reads better as a question.</em></p>
<h2>The Problem</h2>
<p>I've got a bit of a strange problem handling browser events using <code>D3</code>. Unfortunately this sits in quite a large application, and because I'm comple... | 39,410,041 | 3 | 31 | null | 2015-07-06 10:51:05.493 UTC | 3 | 2016-09-09 10:58:29.563 UTC | 2015-07-09 08:31:38.207 UTC | null | 21,061 | null | 21,061 | null | 1 | 32 | javascript|events|d3.js | 5,700 | <p>I recently came across this again, and fortunately have managed to isolate the problem and work around it.</p>
<p>It was actually due to something being registered in the <code>mousedown</code> event, which was moving the DOM element <code>svg:circle</code> to the top based on a z-order. It does this by taking it o... |
20,340,268 | Get request object in Passport strategy callback | <p>So here is my configuration for passport-facebook strategy:</p>
<pre><code> passport.use(new FacebookStrategy({
clientID: ".....",
clientSecret: ".....",
callbackURL: "http://localhost:1337/register/facebook/callback",
},
facebookVerificationHandler
));
</code></pre>
<p>And h... | 20,341,863 | 3 | 0 | null | 2013-12-02 23:57:38.017 UTC | 7 | 2015-11-02 18:27:35.063 UTC | 2015-01-06 14:50:10.18 UTC | null | 1,266,650 | null | 365,266 | null | 1 | 48 | node.js|passport.js|passport-facebook | 23,033 | <p>For this reason instead of setting up the strategy when the application starts I usually setup the strategy when there is a request. for instance:</p>
<pre><code>app.get(
'/facebook/login'
,passport_setup_strategy()
,passport.authenticate()
,redirect_home()
);
var isStrategySetup = false;
var passp... |
6,399,924 | Getting node's text in PHP DOM | <p>How could I extract the string "text" from this markup using the PHP DOM?</p>
<pre><code><div><span>notthis</span>text</div>
</code></pre>
<p><code>$div->nodeValue</code> includes "notthis"</p> | 6,399,930 | 2 | 0 | null | 2011-06-19 01:05:12.08 UTC | 4 | 2011-06-19 01:27:10.483 UTC | null | null | null | null | 378,622 | null | 1 | 35 | php|html|xml|dom | 44,464 | <p>So long as you can affect the DOM, you could remove that <code>span</code>.</p>
<pre><code>$span = $div->getElementsByTagName('span')->item(0);
$div->removeChild($span);
$nodeValue = $div->nodeValue;
</code></pre>
<p>Alternatively, just access the text node of <code>$div</code>.</p>
<pre><code>foreac... |
6,783,365 | ASP.NET MVC - how to get a full path to an action | <p>Inside of a View can I get a full route information to an action? </p>
<p>If I have an action called DoThis in a controller MyController. Can I get to a path of <code>"/MyController/DoThis/"</code>? </p> | 6,783,381 | 2 | 0 | null | 2011-07-21 22:02:06.393 UTC | 4 | 2018-01-10 05:04:48.017 UTC | null | null | null | null | 37,759 | null | 1 | 38 | asp.net-mvc|asp.net-mvc-routing | 31,172 | <p>You mean like using the <a href="http://msdn.microsoft.com/en-us/library/system.web.mvc.urlhelper.action.aspx">Action</a> method on the Url helper:</p>
<pre><code><%= Url.Action("DoThis", "MyController") %>
</code></pre>
<p>or in Razor:</p>
<pre><code>@Url.Action("DoThis", "MyController")
</code></pre>
<p>... |
14,539,328 | How to get a string from another class? | <p>Searched everywhere trying to find how to do this.
I want to get a string from one class that i set the variable before going into the second class and allow me to use it as a string in this class. </p>
<p>Basically there's a String called LastName that i want to use in another class.</p>
<p>Here's my code if need... | 14,539,388 | 3 | 3 | null | 2013-01-26 17:07:42.74 UTC | 3 | 2013-01-26 17:28:59.31 UTC | 2013-01-26 17:20:01.05 UTC | null | 1,888,770 | null | 1,888,770 | null | 1 | 1 | java|string|class | 41,781 | <p>I can see you are probably quite new to Java - so you may be lacking a few fundamentals.</p>
<p>Probably best to just pass the string in as a parameter to the method in your case
e.g.</p>
<pre><code>public void WelcomeAgent(String lastName) {
</code></pre>
<p>and when you call the method, send that value in
e.g.<... |
7,480,437 | ASP.Net - App_Data & App_Code folders? | <p>What is the point of having <code>App_code</code> & <code>App_data</code> folders?</p>
<p>Why doesn't my objectDataSource detect classes unless files are in App_Code?</p>
<p>Please provide as much detail as you can, I'm new to ASP.Net</p> | 7,480,545 | 3 | 0 | null | 2011-09-20 05:11:58.84 UTC | 3 | 2017-08-24 06:23:26.287 UTC | 2011-09-20 05:28:58.067 UTC | null | 142,822 | null | 242,769 | null | 1 | 31 | asp.net|app-code|app-data | 56,441 | <p>These folders have special purpose. From this article - <a href="http://msdn.microsoft.com/en-us/library/ex526337.aspx" rel="noreferrer">ASP.NET Web project folder structure.</a> </p>
<p>App_Code</p>
<hr>
<p>App_Code contains source code for shared classes and business objects (for example, ..cs, and .vb files) ... |
7,382,149 | What's the purpose of Django setting ‘SECRET_KEY’? | <p>I did a few google searches and checked out the docs ( <a href="https://docs.djangoproject.com/en/dev/ref/settings/#secret-key" rel="noreferrer">https://docs.djangoproject.com/en/dev/ref/settings/#secret-key</a> ), but I was looking for a more in-depth explanation of this, and why it is required.</p>
<p>For example,... | 7,382,198 | 3 | 4 | null | 2011-09-11 23:59:01.74 UTC | 26 | 2020-11-23 06:34:07.63 UTC | 2020-11-23 06:34:07.63 UTC | null | 1,038,379 | null | 651,174 | null | 1 | 228 | python|django|security|encryption | 102,067 | <p>It is used for making hashes. Look:</p>
<pre><code>>grep -Inr SECRET_KEY *
conf/global_settings.py:255:SECRET_KEY = ''
conf/project_template/settings.py:61:SECRET_KEY = ''
contrib/auth/tokens.py:54: hash = sha_constructor(settings.SECRET_KEY + unicode(user.id) +
contrib/comments/forms.py:86: info ... |
7,336,354 | Subtracting n Days from a date using SQL | <p>I am quite a beginner when it comes to Oracle. I am having trouble figuring out how to do something similar to this :</p>
<pre><code>SELECT ID, NAME, TO_CHAR(DATEBIRTH, 'DD/MM/YYYY HH24:MI:SS')
FROM PEOPLE WHERE DATEBIRTH >= ANOTHERDATE - NDAY
</code></pre>
<p>To put it short, I want to select everyone who wer... | 7,336,402 | 4 | 6 | null | 2011-09-07 15:20:02.64 UTC | 1 | 2016-08-31 06:13:54.387 UTC | 2011-09-07 16:36:10.04 UTC | null | 146,325 | null | 932,614 | null | 1 | 7 | sql|oracle|date-arithmetic|oracle8i | 60,510 | <p>Your query looks correct to me. That's how you subtract days from dates in Oracle. This link holds some more insight for you, should you want to add months or years:</p>
<p><a href="http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1157035034361" rel="noreferrer">http://asktom.oracle.com/pls/askto... |
7,799,438 | Simple Maths with jQuery - division | <p>I've got two inputs in a div that I want to divide one by the other.</p>
<pre><code><div>
<input type="number" id="a"> / <input type="number" id="b">
<input type="submit">
<p class="result">RESULT HERE</p>
</div>
</code></pre>
<p>How can the maths of this be done with... | 7,799,465 | 2 | 3 | null | 2011-10-17 20:52:54.783 UTC | null | 2011-10-17 21:18:28.203 UTC | 2011-10-17 21:01:05.877 UTC | null | 137,041 | null | 137,041 | null | 1 | 0 | javascript|jquery|math|division | 47,091 | <p>It really depends when you want the calculation to take place, but the maths itself is incredibly simple. Just use the standard <a href="https://developer.mozilla.org/en/JavaScript/Reference/Operators/Arithmetic_Operators">division operator</a>, <code>/</code>:</p>
<pre><code>var num1 = $("input[label='a']").val(),... |
2,118,578 | Any practical coding dojo/kata ideas? | <p>I've been asked to run a workshop and coding dojo soon for people to try out Scala and try to build something with it. The attendees are all going to be new to Scala, and could come from any of a number of languages (I'm presuming they can code in at least one mainstream language - I'm including syntax comparisons w... | 2,118,645 | 4 | 2 | 2010-01-22 17:53:51.057 UTC | 2010-01-22 16:08:49.05 UTC | 15 | 2018-03-12 00:41:26.367 UTC | 2015-01-23 17:39:56.217 UTC | null | 1,014,938 | null | 167,435 | null | 1 | 18 | scala | 6,522 | <p>There is a creative commons licensed introductory training course with hands-on exercises here:</p>
<p><a href="http://github.com/javaBin/scala-training-slides" rel="noreferrer">http://github.com/javaBin/scala-training-slides</a></p>
<p><a href="http://github.com/javaBin/scala-training-code" rel="noreferrer">http:... |
52,689,049 | Flutter - Navigate to a new screen, and clear all the previous screens | <p>I used <code>Navigator.push</code> up to 6 screens to get to the payment page. After Payment, I want to push to the "Payment Successful" page then remove all the previous screens i.e using the back button will return to the very first screen.</p>
<p>NOTE: I have tried <code>pushReplacementNamed</code> and it doesn... | 52,689,158 | 4 | 4 | null | 2018-10-07 13:39:44 UTC | 11 | 2022-04-14 10:47:56.193 UTC | null | null | null | null | 4,083,636 | null | 1 | 43 | android|dart|flutter | 48,585 | <p>I figured it out. It was the <code>Navigator.pushAndRemoveUntil</code> function. Where i had to pass the <code>PaymentSuccessful</code> widget as the <code>newRoute</code>, and the <code>"/Home"</code> route as the predicate</p>
<pre><code> _navPaymentSuccessful(){
Navigator.pushAndRemoveUntil(
context, ... |
49,482,753 | sdl2 - ImportError: DLL load failed: The specified module could not be found and [CRITICAL] [App] Unable to get a Window, abort | <ul>
<li>Python: 3.6.4</li>
<li>OS: Windows 10</li>
<li>Kivy: 1.10.0</li>
</ul>
<h3>Kivy Installation Method</h3>
<pre><code>python -m pip install --upgrade pip wheel setuptools
python -m pip install docutils pygments pypiwin32 kivy.deps.sdl2 kivy.deps.glew
python -m pip install kivy.deps.gstreamer
python -m pip inst... | 51,241,411 | 7 | 4 | null | 2018-03-26 01:28:39.02 UTC | 11 | 2021-12-15 00:02:48.09 UTC | null | null | null | null | 9,550,081 | null | 1 | 21 | python|dll|kivy|sdl-2 | 26,114 | <p>I had the same problem. I solved this by removing Kivy and its dependencies first.</p>
<pre><code>python -m pip uninstall kivy
python -m pip uninstall kivy.deps.sdl2
python -m pip uninstall kivy.deps.glew
python -m pip uninstall kivy.deps.gstreamer
python -m pip uninstall image
</code></pre>
<p>Now reinstalling ... |
49,457,787 | How to Export a Multi-line Environment Variable in Bash/Terminal e.g: RSA Private Key | <p>One of our Apps <a href="https://github.com/dwyl/github-backup" rel="noreferrer"><code>github-backup</code></a> requires the use of an RSA Private Key as an Environment Variable.</p>
<p>Simply attempting to export the key it in the terminal e.g:
<code>text
export PRIVATE_KEY=-----BEGIN RSA PRIVATE KEY-----
MIIEpAIB... | 49,489,260 | 7 | 5 | null | 2018-03-23 20:24:13.643 UTC | 16 | 2021-09-26 12:04:31.84 UTC | 2020-08-19 20:07:52.457 UTC | null | 9,205,413 | null | 1,148,249 | null | 1 | 84 | bash|shell|environment-variables|multiline|private-key | 93,516 | <p><strong>export the key</strong></p>
<pre><code>export PRIVATE_KEY=`cat ./gitbu.2018-03-23.private-key.pem`
</code></pre>
<p><strong>test.sh</strong></p>
<pre><code>#!/bin/bash
echo "$PRIVATE_KEY";
</code></pre>
<p>If you want to save the key to a <code>.env</code> file with the rest of your environment v... |
26,082,444 | how to work around Travis CIs 4MB output limit? | <p>I have a Travis CI build that produces more than 4MB of output which exceeds Travis CIs limit.</p>
<p>I have tried sending output to /dev/null, but Travis also fails if no output is seen for 10 minutes</p>
<p>How can I workaround these constraints? </p> | 26,082,445 | 3 | 1 | null | 2014-09-28 06:55:57.1 UTC | 10 | 2019-10-23 11:15:42.62 UTC | null | null | null | null | 1,033,422 | null | 1 | 21 | travis-ci | 4,375 | <p>The following script sends some dummy output to keep the build alive but also records the build output to a file and displays a tail of the output if the build returns an error:</p>
<pre><code>#!/bin/bash
# Abort on Error
set -e
export PING_SLEEP=30s
export WORKDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &&a... |
26,098,223 | AngularJs code to navigate to another page in buttonclick | <p>AngularJs code to navigate to another page on a button click event. I have catch the button click event but cannot navigate to another page.
The following is my code:
HTML file:</p>
<pre><code><!DOCTYPE html>
<html>
<head>
<script src="js/angular.min.js"></script>
<script src="j... | 26,104,602 | 3 | 1 | null | 2014-09-29 10:55:11.333 UTC | null | 2014-09-29 16:30:25.283 UTC | 2014-09-29 12:06:28.39 UTC | null | 403,132 | null | 3,986,191 | null | 1 | 2 | angularjs | 56,027 | <p>Try like as shown below...</p>
<p>In html,</p>
<pre><code> <button ng-click="clicked()">Click</button>
</code></pre>
<p>In JS,</p>
<pre><code> $scope.clicked = function(){
window.location = "#/test.html";
}
</code></pre>
<p>I hope it helps you...</p> |
7,394,748 | What's the right way to decode a string that has special HTML entities in it? | <p>Say I get some JSON back from a service request that looks like this:</p>
<pre><code>{
"message": "We&#39;re unable to complete your request at this time."
}
</code></pre>
<p>I'm not sure <em>why</em> that apostraphe is encoded like that (<code>&#39;</code>); all I know is that I want to decode it.</p>... | 7,394,787 | 7 | 1 | null | 2011-09-12 22:26:30.137 UTC | 83 | 2022-08-25 16:13:52.083 UTC | null | null | null | null | 105,570 | null | 1 | 266 | javascript|jquery|html-entities | 328,967 | <p>This is my favourite way of decoding HTML characters. The advantage of using this code is that tags are also preserved.</p>
<pre><code>function decodeHtml(html) {
var txt = document.createElement("textarea");
txt.innerHTML = html;
return txt.value;
}
</code></pre>
<p>Example: <a href="http://jsfiddle.n... |
14,279,977 | How to Casting DataSource to List<T>? | <p>I have the following method that load products on a DataGridView</p>
<pre><code>private void LoadProducts(List<Product> products)
{
Source.DataSource = products; // Source is BindingSource
ProductsDataGrid.DataSource = Source;
}
</code></pre>
<p>And now I'm trying to give me back to save them as sho... | 14,280,037 | 4 | 1 | null | 2013-01-11 14:16:17.683 UTC | null | 2018-10-11 15:50:34.39 UTC | 2018-02-13 09:52:38.787 UTC | null | 3,467,532 | null | 1,093,674 | null | 1 | 19 | c#|winforms|datagridview|casting|datasource | 41,424 | <p>You can't cast covariantly directly to List;</p>
<p>Either:</p>
<pre><code>List<Product> products = (List<Product>)Source.DataSource;
</code></pre>
<p>or:</p>
<pre><code>List<Object> products = ((List<Product>)Source.DataSource).Cast<object>().ToList();
</code></pre> |
13,993,750 | The async and await keywords don't cause additional threads to be created? | <p>I'm confused. How can one or many <code>Task</code> run in parallel on a single thread? My understanding of <em>parallelism</em> is obviously wrong.</p>
<p>Bits of MSDN I can't wrap my head around:</p>
<blockquote>
<p>The async and await keywords don't cause additional threads to be
created. Async methods don'... | 13,993,802 | 1 | 0 | null | 2012-12-21 16:29:38.377 UTC | 11 | 2014-02-19 18:31:01.727 UTC | 2014-02-19 18:31:01.727 UTC | null | 79,152 | null | 79,152 | null | 1 | 26 | c#|multithreading|task-parallel-library|async-await|conceptual | 3,495 | <p>They don't run in parallel, they take turns. When progress is blocked for the running Task, it stores its state and yields control to a ready Task. It's cooperative multitasking, not true parallelism.</p>
<p>Threads operate on the sample principle. However there are several key differences I'd like to highlight.... |
13,792,553 | Write JavaScript in Chrome developer tools | <p>In Firebug, I can type my own JavaScript in the console tab and execute it. Is there a way to type JavaScript in Chrome Developer Tools and execute it?</p> | 13,797,341 | 4 | 1 | null | 2012-12-09 22:31:21.523 UTC | 26 | 2017-11-25 04:51:50.757 UTC | 2012-12-14 17:51:21.637 UTC | null | 896,886 | null | 896,886 | null | 1 | 28 | google-chrome-devtools | 45,719 | <ol>
<li>Go to <code>chrome://flags/</code>, enable the "Enable Developer Tools experiments" flag and restart Chrome (or start it with the <code>--enable-devtools-experiments</code> command-line flag.)</li>
<li>Open DevTools, go to the <code>Settings</code> dialog, switch to the <code>Experiments</code> tab.</li>
<li>E... |
13,960,514 | How to adapt my plugin to Multisite? | <p>I have many plugins that I wrote for WordPress, and now I want to adapt them to MU.<br>
What are the <em>considerations / best practices / workflow / functions / pitfalls</em> that I have to <em>follow / avoid / adapt</em> in order to 'upgrade' my plugins to support also Multisite installations? </p>
<p>For example... | 15,940,351 | 1 | 0 | null | 2012-12-19 20:19:31.09 UTC | 31 | 2014-09-18 22:22:14.38 UTC | 2013-04-11 05:52:20.45 UTC | null | 1,287,812 | null | 1,244,126 | null | 1 | 34 | php|wordpress | 22,269 | <p>As for enqueuing and including, things go as normal. Plugin path and URL are the same.</p>
<p>I never dealt with anything related to upload paths in Multisite and I guess normally WP takes care of this.</p>
<hr>
<h1><code>$wpdb</code></h1>
<p>There is a commonly used snippet to iterate through all blogs:</p>
<p... |
13,996,302 | Python - rolling functions for GroupBy object | <p>I have a time series object <code>grouped</code> of the type <code><pandas.core.groupby.SeriesGroupBy object at 0x03F1A9F0></code>. <code>grouped.sum()</code> gives the desired result but I cannot get rolling_sum to work with the <code>groupby</code> object. Is there any way to apply rolling functions to <code... | 13,998,600 | 5 | 4 | null | 2012-12-21 19:49:00.067 UTC | 25 | 2021-03-18 13:16:59.983 UTC | 2019-06-29 03:26:37.933 UTC | user1642513 | 202,229 | user1642513 | null | null | 1 | 78 | python|pandas|pandas-groupby|rolling-computation|rolling-sum | 121,364 | <h3>cumulative sum</h3>
<p>To answer the question directly, the cumsum method would produced the desired series:</p>
<pre><code>In [17]: df
Out[17]:
id x
0 a 0
1 a 1
2 a 2
3 b 3
4 b 4
5 b 5
In [18]: df.groupby('id').x.cumsum()
Out[18]:
0 0
1 1
2 3
3 3
4 7
5 12
Name: x, dtype: int6... |
28,937,392 | JavaFX Alerts and their size | <p>Recently, JavaFX introduced Alerts (Java 8u40). </p>
<p>Consider the code example below. How can I display a full message that is longer than just a few words? My messages (<code>contentText</code> property) get cut at the end with <code>...</code> and the Alert does not adjust its size properly in my opinion.</p>
... | 36,938,061 | 5 | 3 | null | 2015-03-09 08:00:30.93 UTC | 11 | 2020-10-02 20:20:57.503 UTC | 2015-03-09 12:24:19.61 UTC | null | 970,752 | null | 970,752 | null | 1 | 41 | java|javafx|dialog|alert | 38,214 | <p>I have made the following workaround:</p>
<pre><code>Alert alert = new Alert(AlertType.INFORMATION, "Content here", ButtonType.OK);
alert.getDialogPane().setMinHeight(Region.USE_PREF_SIZE);
alert.show();
</code></pre>
<p>So the window will resize automatically according to the content.</p> |
28,999,906 | 'require': cannot load such file -- 'nokogiri\nokogiri' (LoadError) when running `rails server` | <p>I'm running a clean install of Ruby 2.2.1 on Windows 8.1 with DevKit. After the installation I run:</p>
<pre><code>gem install rails
rails new testapp
cd testapp
rails server
</code></pre>
<p>leaving everything else at default.</p>
<p>The process fails at the last line when, instead of running the server, I get t... | 29,007,731 | 4 | 3 | null | 2015-03-12 00:24:40.847 UTC | 18 | 2021-10-08 03:44:05.7 UTC | 2015-10-13 19:44:11.867 UTC | null | 128,421 | null | 2,079,775 | null | 1 | 68 | ruby-on-rails|ruby|nokogiri | 73,943 | <p>Nokogiri doesn't support Ruby 2.2 on Windows yet. The next release will. See <a href="https://github.com/sparklemotion/nokogiri/issues/1256" rel="noreferrer">https://github.com/sparklemotion/nokogiri/issues/1256</a></p>
<p>Nokogiri doesn't support native builds (e.g. with devkit) on Windows. Instead it provides gem... |
43,330,915 | Could not load file or assembly 'Microsoft.Build.Framework'(VS 2017) | <p>When I try running the command "update-database", I get this exception:</p>
<blockquote>
<p>Specify the '-Verbose' flag to view the SQL statements being applied
to the target database. System.IO.FileNotFoundException: Could not
load file or assembly 'Microsoft.Build.Framework, Version=15.1.0.0,
Culture=... | 43,498,190 | 23 | 2 | null | 2017-04-10 18:55:46.177 UTC | 21 | 2022-09-16 01:35:52.8 UTC | 2018-01-29 23:07:12.743 UTC | null | 2,718,874 | null | 5,411,355 | null | 1 | 101 | c#|msbuild|migration|visual-studio-2017 | 80,191 | <p>I believe I had the same issue as you did. I didn't save the whole error message, but my error message was</p>
<blockquote>
<p>'<em>Could not load file or assembly 'Microsoft.Build.Framework,
Version=15.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or
one of its dependencies. The system cannot find... |
44,636,549 | Why is there no support for concatenating std::string and std::string_view? | <p>Since C++17, we have <a href="http://en.cppreference.com/w/cpp/string/basic_string_view" rel="noreferrer"><code>std::string_view</code></a>, a light-weight view into a contiguous sequence of characters that avoids unnecessary copying of data. Instead of having a <code>const std::string&</code> parameter, it is n... | 47,735,624 | 2 | 6 | null | 2017-06-19 17:26:55.05 UTC | 13 | 2022-06-02 13:41:51.877 UTC | 2020-07-02 23:13:32.18 UTC | null | 471,164 | null | 2,580,955 | null | 1 | 115 | c++|string|c++17|string-view | 18,904 | <p>The reason for this is given in <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3512.html" rel="noreferrer">n3512 string_ref: a non-owning reference to a string, revision 2</a> by Jeffrey Yasskin:</p>
<blockquote>
<p>I also omitted operator+(basic_string, basic_string_ref) because LLVM returns a... |
24,573,643 | How to generate serial version UID in Intellij | <p>When I used <strong><em>Eclipse</em></strong> it had a nice feature to generate serial version UID.</p>
<p>But what to do in IntelliJ? </p>
<p><strong><em>How to choose or generate identical serial version UID in IntelliJ?</em></strong></p>
<p>And what to do when you modify old class?</p>
<p>If you haven't speci... | 36,007,392 | 4 | 3 | null | 2014-07-04 11:50:55.73 UTC | 35 | 2022-07-14 07:58:41.473 UTC | 2017-11-02 12:13:37.62 UTC | null | 5,180,989 | null | 1,498,427 | null | 1 | 207 | java|serialization|intellij-idea | 193,811 | <p>Without any plugins:</p>
<p>You just need to enable highlight: (Idea v.2016, 2017 and 2018, previous versions may have same or similar settings)</p>
<blockquote>
<p>File -> Settings -> Editor -> Inspections -> Java -> Serialization issues -> Serializable class without 'serialVersionUID' - set flag ... |
788,786 | how to write a complete server client communication using java nio | <p>I am new to java NIO. I have to write a simple server client communication program using Java NIO.</p>
<p>Is there any sample programs or any link where can I go for this?</p> | 788,879 | 5 | 0 | null | 2009-04-25 12:10:01 UTC | 13 | 2014-10-08 23:01:52.703 UTC | 2014-10-08 23:01:23.173 UTC | null | 125,389 | null | 94,352 | null | 1 | 7 | java|sockets|nio | 16,234 | <p>You might give a look at <a href="http://mina.apache.org/" rel="nofollow noreferrer">Apache Mina</a>. If you only want to learn java NIO it might me a little to hard to grasp.</p> |
85,649 | Safely remove a USB drive using the Win32 API? | <p>How do I remove a USB drive using the Win32 API? I do a lot of work on embedded systems and on one of these I have to copy my programs on a USB stick and insert it into the target hardware.</p>
<p>Since I mostly work on the console I don't like to use the mouse and click on the small task-bar icon hundred times a d... | 85,694 | 5 | 2 | null | 2008-09-17 17:33:07.5 UTC | 16 | 2020-10-16 01:45:45.64 UTC | 2014-12-01 12:33:05.777 UTC | monjardin | 63,550 | Nils | 15,955 | null | 1 | 31 | c|windows|winapi|usb | 38,219 | <p>You can use the CM_Request_Device_Eject() function as well as some other possibilities.
Consult the following projects and articles:</p>
<p>DevEject: Straightforward.
<a href="http://www.withopf.com/tools/deveject/" rel="noreferrer">http://www.withopf.com/tools/deveject/</a></p>
<p>A useful CodeProject article:
<a... |
122,853 | How to get the file size from http headers | <p>I want to get the size of an http:/.../file before I download it. The file can be a webpage, image, or a media file. Can this be done with HTTP headers? How do I download just the file HTTP header?</p> | 122,984 | 5 | 0 | null | 2008-09-23 18:31:42.917 UTC | 26 | 2022-03-08 13:21:51.43 UTC | 2017-03-23 18:40:45.57 UTC | null | 1,664,443 | Greg | null | null | 1 | 70 | c#|http|download|http-headers | 61,368 | <p>Yes, assuming the HTTP server you're talking to supports/allows this:</p>
<pre><code>public long GetFileSize(string url)
{
long result = -1;
System.Net.WebRequest req = System.Net.WebRequest.Create(url);
req.Method = "HEAD";
using (System.Net.WebResponse resp = req.GetResponse())
{
if (... |
1,298,636 | How to set initial size for a dictionary in Python? | <p>I'm putting around 4 million different keys into a Python dictionary.
Creating this dictionary takes about 15 minutes and consumes about 4GB of memory on my machine. After the dictionary is fully created, querying the dictionary is fast.</p>
<p>I suspect that dictionary creation is so resource consuming because the ... | 1,298,905 | 6 | 4 | null | 2009-08-19 09:06:30.4 UTC | 13 | 2021-05-20 04:32:32.627 UTC | 2021-05-20 04:32:32.627 UTC | null | 3,064,538 | null | 42,201 | null | 1 | 29 | python|performance|dictionary | 38,845 | <p>With performance issues it's always best to measure. Here are some timings:</p>
<pre><code> d = {}
for i in xrange(4000000):
d[i] = None
# 722ms
d = dict(itertools.izip(xrange(4000000), itertools.repeat(None)))
# 634ms
dict.fromkeys(xrange(4000000))
# 558ms
s = set(xrange(4000000))
dict.fromkeys(s)
... |
1,082,311 | Why should a .NET struct be less than 16 bytes? | <p>I've read in a few places now that the maximum instance size for a struct should be 16 bytes.</p>
<p>But I cannot see where that number (16) comes from.</p>
<p>Browsing around the net, I've found some who suggest that it's an approximate number for good performance but Microsoft talk like it is a hard upper limit.... | 1,082,340 | 6 | 0 | null | 2009-07-04 14:36:47.223 UTC | 9 | 2021-04-12 01:40:00.83 UTC | 2009-07-04 14:58:02.733 UTC | null | 76,337 | null | 92,232 | null | 1 | 64 | c#|.net | 15,329 | <p>It is just a performance rule of thumb.</p>
<p>The point is that because value types are passed by value, the entire size of the struct has to be copied if it is passed to a function, whereas for a reference type, only the reference (4 bytes) has to be copied. A struct might save a bit of time though because you re... |
453,372 | Writing function definition in header files in C++ | <p>I have a class which has many small functions. By small functions, I mean functions that doesn't do any processing but just return a literal value. Something like:</p>
<pre><code>string Foo::method() const{
return "A";
}
</code></pre>
<p>I have created a header file "Foo.h" and source file "Foo.cpp". But since... | 453,387 | 6 | 0 | null | 2009-01-17 14:36:22.04 UTC | 27 | 2018-11-01 11:57:11.1 UTC | 2017-05-22 07:43:33.52 UTC | Ferruccio | 2,291,710 | Appu | 50,419 | null | 1 | 65 | c++|performance|header-files | 105,357 | <p>If the function is small (the chance you would change it often is low), and if the function can be put into the header without including myriads of other headers (because your function depends on them), it is perfectly valid to do so. If you declare them extern inline, then the compiler is required to give it the sa... |
978,052 | How can I make my local repository available for git-pull? | <p>I have a working copy repository that I've been working in no problem; the origin for this repository is on GitHub. </p>
<p>I'd like to make my working copy repository available as the origin for my build machine (a VM on another physical host), so that commits I make to my working copy can be built and tested on ... | 978,417 | 6 | 1 | null | 2009-06-10 20:45:41.883 UTC | 33 | 2015-11-11 07:44:36.573 UTC | 2015-11-11 07:28:48.507 UTC | null | 248,296 | null | 5,296 | null | 1 | 91 | git|pull|git-pull|working-copy | 81,818 | <p>Five possibilities exist to set up a repository for pull from:</p>
<ul>
<li><strong>local filesystem</strong>: <code>git clone /path/to/repo</code> or <code>git clone file://path/to/repo</code>. Least work if you have networked filesystem, but not very efficient use of network. <em>(This is almost exactly solution ... |
609,826 | Performance of ThreadLocal variable | <p>How much is read from <code>ThreadLocal</code> variable slower than from regular field?</p>
<p>More concretely is simple object creation faster or slower than access to <code>ThreadLocal</code> variable?</p>
<p>I assume that it is fast enough so that having <code>ThreadLocal<MessageDigest></code> instance is... | 610,249 | 6 | 2 | null | 2009-03-04 09:22:41.883 UTC | 18 | 2020-12-24 10:49:36.953 UTC | 2011-11-20 00:01:20.487 UTC | Sarmun | 1,502,059 | Sarmun | 70,173 | null | 1 | 92 | java|multithreading|performance|thread-local | 32,216 | <p>Running unpublished benchmarks, <code>ThreadLocal.get</code> takes around 35 cycle per iteration on my machine. Not a great deal. In Sun's implementation a custom linear probing hash map in <code>Thread</code> maps <code>ThreadLocal</code>s to values. Because it is only ever accessed by a single thread, it can be ve... |
357,600 | Is const_cast safe? | <p>I can't find much information on <code>const_cast</code>. The only info I could find (on Stack Overflow) is:</p>
<blockquote>
<p>The <code>const_cast<>()</code> is used to add/remove const(ness) (or volatile-ness) of a variable.</p>
</blockquote>
<p>This makes me nervous. Could using a <code>const_cast</... | 357,607 | 6 | 2 | null | 2008-12-10 21:01:13.417 UTC | 40 | 2017-08-28 11:57:40.377 UTC | 2017-08-28 11:57:40.377 UTC | Mag Roader | 5,612,562 | Mag Roader | 10,606 | null | 1 | 96 | c++|casting|const-cast | 50,838 | <p><code>const_cast</code> is safe only if you're casting a variable that was originally non-<code>const</code>. For example, if you have a function that takes a parameter of a <code>const char *</code>, and you pass in a modifiable <code>char *</code>, it's safe to <code>const_cast</code> that parameter back to a <co... |
37,725,934 | ASP.NET Core MVC controllers in separate assembly | <p>I'm using ASP.NET MVC Core RC-2. I have a web project targeting the full .NET framework. I also have a separate class library in the solution, also targeting the full framework.</p>
<p>In the class library, I have a controller, marked with a route attribute. I have referenced the class library from the web project.... | 37,735,487 | 2 | 2 | null | 2016-06-09 12:23:52.46 UTC | 6 | 2018-10-16 15:50:41.223 UTC | 2017-05-23 12:03:07.5 UTC | null | -1 | null | 619,759 | null | 1 | 43 | asp.net-core-mvc|asp.net-core-1.0 | 28,919 | <p>I believe you are hitting the following known issue in RC2.
<a href="https://github.com/aspnet/Mvc/issues/4674" rel="noreferrer">https://github.com/aspnet/Mvc/issues/4674</a> (workaround is mentioned in the bug)</p>
<p>This has been fixed since then but will only be available in next release (unless you are ok wit... |
38,002,543 | apt-get update' returned a non-zero code: 100 | <p>I am trying to create a docker image from my docker file which has the following content:</p>
<pre><code>FROM ubuntu:14.04.4
RUN echo 'deb http://private-repo-1.hortonworks.com/HDP/ubuntu14/2.x/updates/2.4.2.0 HDP main' >> /etc/apt/sources.list.d/HDP.list
RUN echo 'deb http://private-repo-1.hortonworks.com/HDP... | 38,004,106 | 9 | 3 | null | 2016-06-23 21:55:45.007 UTC | 13 | 2022-09-20 11:32:57.923 UTC | 2021-01-22 22:54:47.127 UTC | null | 11,154,841 | null | 3,579,198 | null | 1 | 89 | ubuntu|docker|dockerfile | 153,787 | <p>Because you have an https sources. Install <code>apt-transport-https</code> before executing update.</p>
<pre><code>FROM ubuntu:14.04.4
RUN apt-get update && apt-get install -y apt-transport-https
RUN echo 'deb http://private-repo-1.hortonworks.com/HDP/ubuntu14/2.x/updates/2.4.2.0 HDP main' >> /etc/ap... |
17,819,710 | Is there any way to convert a Map to a JSON representation using Jackson without writing to a file? | <p>I'm trying to use Jackson to convert a HashMap to a JSON representation.</p>
<p>However, all the ways I've seen involve writing to a file and then reading it back, which seems really inefficient. I was wondering if there was anyway to do it directly? </p>
<p>Here's an example of an instance where I'd like to do it... | 17,821,453 | 2 | 1 | null | 2013-07-23 19:49:06.51 UTC | 2 | 2016-04-05 13:04:19.967 UTC | 2015-07-31 07:25:18.573 UTC | null | 1,082,449 | user2494770 | null | null | 1 | 33 | java|json|jackson | 68,350 | <p>Pass your Map to <code>ObjectMapper.writeValueAsString(Object value)</code></p>
<p>It's more efficient than using <code>StringWriter</code>, <a href="http://jackson.codehaus.org/1.7.9/javadoc/org/codehaus/jackson/map/ObjectMapper.html#writeValueAsString%28java.lang.Object%29">according to the docs</a>:</p>
<blockq... |
1,389,431 | How to check if JSON object is empty in PHP? | <p>I'm reading JSON data with PHP and that data contains empty objects (like <code>{}</code>). So the problem is, I have to handle the case when object is empty in different manner but I can't find good enough way to do the check. <code>empty(get_object_vars(object))</code> looks too scary and very inefficient. Is ther... | 1,389,591 | 5 | 1 | null | 2009-09-07 13:28:10.917 UTC | 6 | 2018-01-03 16:30:07.263 UTC | 2018-01-03 16:30:07.263 UTC | null | 3,995,261 | null | 6,258 | null | 1 | 24 | php|json | 65,725 | <p>How many objects are you unserializing? Unless <code>empty(get_object_vars($object))</code> or casting to array proves to be a major slowdown/bottleneck, I wouldn't worry about it – Greg's solution is just fine.</p>
<p>I'd suggest using the the <code>$associative</code> flag when decoding the JSON data, though: </p... |
1,615,813 | How to use C++ classes with ctypes? | <p>I'm just getting started with ctypes and would like to use a C++ class that I have exported in a dll file from within python using ctypes.
So lets say my C++ code looks something like this:</p>
<pre class="lang-c++ prettyprint-override"><code>class MyClass {
public:
int test();
...
</code></pre>
<p>I would k... | 1,616,143 | 5 | 0 | null | 2009-10-23 20:51:00.747 UTC | 28 | 2022-09-12 06:43:52.683 UTC | 2015-01-23 18:57:30.083 UTC | null | 3,204,551 | null | 89,987 | null | 1 | 65 | c++|python|ctypes | 60,400 | <p>The short story is that there is no standard binary interface for C++ in the way that there is for C. Different compilers output different binaries for the same C++ dynamic libraries, due to name mangling and different ways to handle the stack between library function calls.</p>
<p>So, unfortunately, there really ... |
1,775,005 | "super star" or find the word under the cursor equivalent in emacs | <p>I'm a vim user and have recently been trying out emacs for fun. I find that the feature I'm missing most so far from vim is the "<a href="http://vim.wikia.com/wiki/VimTip1" rel="noreferrer">super star</a>" (find the word under the cursor by typing *) feature, and I have yet to find the equivalent in emacs. If it's... | 1,775,184 | 6 | 3 | null | 2009-11-21 09:16:34.087 UTC | 13 | 2019-02-13 15:45:11.86 UTC | null | null | null | null | 214,302 | null | 1 | 33 | search|vim|emacs|editor | 8,447 | <p>As <a href="/questions/1775005/super-star-or-find-the-word-under-the-cursor-equivalent-in-emacs#comment54758673_1775184">pointed out</a> by <a href="/users/556072/paldepind">paldepind</a>, <code>isearch-forward-symbol-at-point</code> (<kbd>M-s</kbd><kbd>.</kbd>, by default) is a close equivalent to <kbd>*</kbd> in V... |
2,261,480 | In Joda-Time, set DateTime to start of month | <p>My API allows library client to pass Date:</p>
<pre><code>method(java.util.Date date)
</code></pre>
<p>Working with <a href="http://www.joda.org/joda-time/" rel="noreferrer">Joda-Time</a>, from this date I would like to extract the month and iterate over all days this month contains.</p>
<p>Now, the passed date i... | 2,261,547 | 6 | 3 | null | 2010-02-14 14:56:10.023 UTC | 6 | 2020-08-20 12:12:04.443 UTC | 2013-11-25 23:34:14.477 UTC | null | 642,706 | null | 48,062 | null | 1 | 34 | java|date|jodatime | 39,190 | <p>Midnight at the start of the first day of the current month is given by:</p>
<pre><code>// first midnight in this month
DateMidnight first = new DateMidnight().withDayOfMonth(1);
// last midnight in this month
DateMidnight last = first.plusMonths(1).minusDays(1);
</code></pre>
<p>If starting from a java.util.Date... |
1,525,605 | Programmatically get parent pid of another process? | <p>I tried google, but found <code>getppid()</code> which gets the parent pid of the <em>current</em> process.</p>
<p>I need something like <code>getppid(some_other_pid)</code>, is there such a thing? Basically takes the pid of some process and returns the parent process' pid.</p> | 1,525,673 | 7 | 2 | null | 2009-10-06 13:30:10.663 UTC | 9 | 2022-09-12 21:55:43.48 UTC | 2022-09-12 18:33:13.613 UTC | null | 224,132 | null | 35,364 | null | 1 | 33 | linux|process|operating-system|pid | 23,570 | <p>I think the simplest thing would be to open "/proc" and parse the contents.</p>
<p>You'll find the ppid as the 4th parameter of /proc/pid/stat</p>
<p>In C, libproc has a <code>get_proc_stats</code> function for parsing that file: see <a href="https://stackoverflow.com/questions/35399271/given-a-child-pid-h... |
1,398,664 | Enum.GetValues() Return Type | <p>I have read the documentation that states that "given the type of the enum, the GetValues() method of System.Enum will return an array of the given enum's base type" i.e. int, byte, etc.</p>
<p>However, I have been using the GetValues() method and all I keep getting back is an array of type Enums. Am I mis... | 1,398,668 | 7 | 2 | null | 2009-09-09 09:54:16.51 UTC | 6 | 2022-08-26 01:11:42.37 UTC | 2022-08-26 01:11:42.37 UTC | null | 1,402,846 | null | 109,288 | null | 1 | 73 | c#|enums | 80,892 | <p>You need to cast the result to the actual array type you want</p>
<pre><code>(Response[])Enum.GetValues(typeof(Response))
</code></pre>
<p>as GetValues isn't strongly typed</p>
<p>EDIT: just re-read the answer. You need to explicitly cast each enum value to the underlying type, as GetValues returns an array of th... |
1,666,052 | Java HTTPS client certificate authentication | <p>I'm fairly new to <code>HTTPS/SSL/TLS</code> and I'm a bit confused over what exactly the clients are supposed to present when authenticating with certificates.</p>
<p>I'm writing a Java client that needs to do a simple <code>POST</code> of data to a particular <code>URL</code>. That part works fine, the only probl... | 1,710,543 | 9 | 1 | null | 2009-11-03 08:51:39.66 UTC | 195 | 2022-02-22 11:16:34.087 UTC | 2019-02-25 22:28:45.24 UTC | null | 9,851,598 | null | 201,202 | null | 1 | 262 | java|ssl|https|client-certificates | 448,159 | <p>Finally managed to solve all the issues, so I'll answer my own question. These are the settings/files I've used to manage to get my particular problem(s) solved;</p>
<p>The <strong>client's keystore</strong> is a <strong>PKCS#12 format</strong> file containing</p>
<ol>
<li>The client's <strong>public</strong> cert... |
1,424,276 | Ellipsize not working for textView inside custom listView | <p>I have a listView with custom objects defined by the xml-layout below. I want the textView with id "info" to be ellipsized on a single line, and I've tried using the attributes </p>
<pre><code>android:singleLine="true"
android:ellipsize="end"
</code></pre>
<p>without success.</p>
<p>If I set the layout_width to a... | 1,424,686 | 9 | 0 | null | 2009-09-14 22:49:57.747 UTC | 15 | 2017-03-09 06:59:01.437 UTC | null | null | null | null | 91,098 | null | 1 | 28 | xml|android|textview | 35,856 | <p>Ellipsize is broken (go <a href="http://code.google.com/p/android/issues/detail?id=882" rel="noreferrer">vote on the bug report</a>, especially since they claim it's not reproducible) so you have to use a minor hack. Use:</p>
<pre><code>android:inputType="text"
android:maxLines="1"
</code></pre>
<p>on anything you... |
1,469,994 | Using 'make' on OS X | <p>I have a MacBook Pro that I'm trying to do some development on.</p>
<p>I have a program I want to build, and when I went to use <code>make</code> to build it, I got a "command not found" error. I did some googling and Stack Overflow searches and it doesn't look like this is a common problem. Why don't I have <... | 1,470,005 | 11 | 2 | null | 2009-09-24 06:07:25.123 UTC | 18 | 2019-07-29 11:11:00.117 UTC | 2019-07-29 11:11:00.117 UTC | null | 63,550 | null | 63,791 | null | 1 | 73 | macos|makefile|terminal | 141,759 | <p>Have you installed the Apple developer tools?
What happens if you type gcc -v ?</p>
<p>It look as if you do not have downloaded the development stuff. You can get it for free (after registration) from <a href="http://developer.apple.com/" rel="noreferrer">http://developer.apple.com/</a></p> |
1,941,928 | How to store data locally in .NET (C#) | <p>I'm writing an application that takes user data and stores it locally for use later. The application will be started and stopped fairly often, and I'd like to make it save/load the data on application start/end.</p>
<p>It'd be fairly straightforward if I used flat files, as the data doesn't really need to be secure... | 1,942,374 | 19 | 2 | null | 2009-12-21 19:00:40.91 UTC | 46 | 2022-03-15 17:55:07.343 UTC | 2022-03-15 17:55:07.343 UTC | null | 169,713 | null | 169,713 | null | 1 | 79 | c#|.net|xml|data-storage | 186,090 | <p>I'd store the file as <a href="http://www.json.org/" rel="noreferrer">JSON</a>. Since you're storing a dictionary which is just a name/value pair list then this is pretty much what json was designed for.<br>
There a quite a few decent, free .NET json libraries - here's <a href="http://james.newtonking.com/projects/j... |
8,642,012 | Why should a Comparator implement Serializable? | <p>New to Java. Learning it while working on an Android app. I am implementing a Comparator to sort a list of files and the android docs <a href="http://developer.android.com/reference/java/util/Comparator.html" rel="noreferrer">say</a> that a Comparator should implement Serializable:</p>
<blockquote>
<p>It is recom... | 8,642,040 | 5 | 2 | null | 2011-12-27 07:06:29.953 UTC | 8 | 2016-05-09 15:22:02.797 UTC | 2011-12-27 08:09:35.077 UTC | null | 66,475 | null | 66,475 | null | 1 | 43 | java|android|sorting|serialization|comparator | 23,158 | <p>This is not just an Android thing, the <a href="http://docs.oracle.com/javase/6/docs/api/java/util/Comparator.html">Java SDK has the same recommendation</a>:</p>
<blockquote>
<p>Note: It is generally a good idea for comparators to also implement java.io.Serializable, as they may be used as ordering methods in ser... |
6,678,756 | Get all images from specific Facebook album with Graph API PHP SDK | <p>Hi I'm trying to grab all pictures from a specific album (always the same hardcoded id).
I'm using the Graph API PHP SDK from Facebook. This is my code:</p>
<pre><code><?php
require 'phpfiles/facebook.php';
$facebook = new Facebook(array(
'appId' => 'aaaa',
'secret' => 'bbbb',
'cookie' =&... | 6,689,492 | 3 | 1 | null | 2011-07-13 12:22:02.837 UTC | 5 | 2015-08-18 06:22:37.27 UTC | null | null | null | null | 229,532 | null | 1 | 8 | php|facebook|facebook-graph-api | 39,177 | <p>I got it! It should be:
<strike></p>
<pre><code>$user_profile = $facebook->api('/1881235503185/photos', array('access_token' => 'cccc'));
</code></pre>
<p></strike></p>
<p>With the new Facebook PHP SDK it should be: </p>
<pre><code>$albumjson = $facebook->api('/1881235503185?fields=photos');
</code></pr... |
6,918,900 | Impersonate tag in Web.Config | <p>I'm using <code>impersonate</code> tag in my web.config in Asp.net 4.0 website.</p>
<p><strong>Below is my Web.Config code:</strong></p>
<pre><code><system.web>
<authentication mode="Windows">
<identity impersonate="true"
userName="Administrator"
... | 6,918,964 | 3 | 0 | null | 2011-08-02 21:30:41.79 UTC | 11 | 2018-08-24 12:11:10.7 UTC | 2018-08-24 12:11:10.7 UTC | null | 107,625 | user572844 | null | null | 1 | 30 | asp.net|web-config|impersonation | 148,930 | <p>The <code>identity</code> section goes under the <code>system.web</code> section, not under <code>authentication</code>:</p>
<pre><code><system.web>
<authentication mode="Windows"/>
<identity impersonate="true" userName="foo" password="bar"/>
</system.web>
</code></pre> |
6,640,640 | Check multiple items in ASP.NET CheckboxList | <p>I try to check multiple values in ASP.NET CheckboxList but I couldn't.
<br>
I Wrote : </p>
<pre><code>chkApplications.SelectedValue = 2;
chkApplications.SelectedValue = 6;
</code></pre>
<p>But it just selects item with value '6'<br>
What's wrong ?</p> | 6,640,677 | 4 | 0 | null | 2011-07-10 10:49:58.747 UTC | 3 | 2016-02-12 15:56:29.67 UTC | null | null | null | null | 369,161 | null | 1 | 9 | c#|asp.net|checkboxlist | 42,712 | <p>The best technique that will work for you is the following: </p>
<pre><code>chkApplications.Items.FindByValue("2").Selected = true;
chkApplications.Items.FindByValue("6").Selected = true;
</code></pre>
<p>OR you can simply do it like...</p>
<pre><code> foreach (ListItem item in chkApplications.Items)
{
... |
15,701,952 | Change size of arrows using matplotlib quiver | <p>I am using quiver from matplotlib to plot a vectorial field. I would like to
change the size of the thickness of each arrow depending on
the number of data which produced a specific arrow of the vector field. Therefore
what I am looking for is not a general scale transformation of the arrow size, but the way
to ... | 15,702,208 | 2 | 0 | null | 2013-03-29 11:02:20.67 UTC | 3 | 2018-05-29 17:48:06.31 UTC | null | null | null | null | 1,234,383 | null | 1 | 12 | python|matplotlib | 41,246 | <p>The <code>linewidths</code> parameter to <code>plt.quiver</code> controls the thickness of the arrows. If you pass it a 1-dimensional array of values, each arrow gets a different thickness. </p>
<p>For example,</p>
<pre><code>widths = np.linspace(0, 2, X.size)
plt.quiver(X, Y, cos(deg), sin(deg), linewidths=widths... |
40,257,968 | Slow app compilation with new Sierra update | <p>When I updated my mac to macOS Sierra 10.12.1 time of running application on real device significantly increased.
"Run custom script 'Embed Pods Frameworks'" and "Copy Swift standard libraries" take more then 30 minutes to build. </p>
<p>Do someone face the same issue?</p> | 40,298,722 | 4 | 5 | null | 2016-10-26 09:01:21.383 UTC | 19 | 2017-07-26 14:35:17.427 UTC | 2016-10-28 06:29:26.427 UTC | null | 932,644 | null | 932,644 | null | 1 | 30 | xcode|cocoapods|keychain|macos-sierra | 5,467 | <p>Check your keychain. After updating to Sierra to 10.12.1, I had over 500 copies one of my certificates, and a few others were duplicated a few hundred times. </p>
<p>I removed all the duplicates and kept just one of each, and my code signing time went from 30 seconds per framework down to about 1 second per. </p... |
57,650,692 | Where to store the refresh token on the Client? | <p>My SPA application uses the following architecture (<a href="https://auth0.com/blog/refresh-tokens-what-are-they-and-when-to-use-them/" rel="noreferrer">source</a>):</p>
<p><a href="https://i.stack.imgur.com/BPJjA.png" rel="noreferrer"><img src="https://i.stack.imgur.com/BPJjA.png" alt="enter image description here... | 57,826,596 | 6 | 3 | null | 2019-08-26 00:34:31.23 UTC | 41 | 2021-05-04 13:54:53.113 UTC | 2019-09-02 01:28:45.373 UTC | null | 1,189,762 | null | 1,189,762 | null | 1 | 94 | authentication|cookies|oauth|oauth-2.0|token | 83,136 | <p>You can store encrypted tokens securely in <code>HttpOnly</code> cookies.</p>
<p><a href="https://medium.com/@sadnub/simple-and-secure-api-authentication-for-spas-e46bcea592ad" rel="noreferrer">https://medium.com/@sadnub/simple-and-secure-api-authentication-for-spas-e46bcea592ad</a></p>
<p>If you worry about long-... |
57,305,227 | How to use map function for hooks useState properties | <p>I tried to use map function for looping my list data in react-hooks useState but I stuck with an error that "TypeError: Cannot read property 'map' of undefined"</p>
<pre><code>//1.Initial declaration
const App = props=> {
const [state, changeState]= useState ({
name:"",
eventTitle:"",
details:"",
... | 57,310,256 | 2 | 7 | null | 2019-08-01 08:53:16.5 UTC | 6 | 2019-08-01 13:54:42.48 UTC | 2019-08-01 08:57:55.32 UTC | null | 6,919,895 | null | 11,457,419 | null | 1 | 3 | reactjs|react-hooks | 48,688 | <p>As we suspected you are not setting your state in the right way. I tried to explain in my comment, with hooks when you set your state it does not merge the updated properties with the current one. So, you should think about that. Right now you are setting your state like that:</p>
<pre><code>const handleName = name... |
27,646,107 | How to check if the user gave permission to use the camera? | <p>Trying to write this:</p>
<pre><code>if usergavepermissiontousercamera
opencamera
else
showmycustompermissionview
</code></pre>
<p>Couldn't find a current way to do this simple task.<br>
Note: Should also work iOS7 even if it requires a different method</p> | 27,646,311 | 6 | 3 | null | 2014-12-25 09:52:00.563 UTC | 25 | 2020-08-28 08:19:24.673 UTC | null | null | null | null | 2,589,276 | null | 1 | 99 | ios|swift | 92,125 | <p>You can use the following code for doing the same:</p>
<pre><code>if AVCaptureDevice.authorizationStatusForMediaType(AVMediaTypeVideo) == AVAuthorizationStatus.Authorized {
// Already Authorized
} else {
AVCaptureDevice.requestAccessForMediaType(AVMediaTypeVideo, completionHandler: { (granted: Bool) -> ... |
16,098,362 | How to deep copy a Binary Tree? | <p>I would like using my own Node class to implement tree structure in Java. But I'm confused how to do a deep copy to copy a tree.</p>
<p>My Node class would be like this:</p>
<pre><code>public class Node{
private String value;
private Node leftChild;
private Node rightChild;
....
</code></pre>
<p>I'm new to recurs... | 16,098,659 | 7 | 2 | null | 2013-04-19 06:12:44.36 UTC | 6 | 2021-12-28 22:59:26.88 UTC | 2018-03-14 18:57:08.79 UTC | null | 1,727,979 | null | 1,156,192 | null | 1 | 8 | java|recursion|tree|treenode | 39,172 | <p>try</p>
<pre><code>class Node {
private String value;
private Node left;
private Node right;
public Node(String value, Node left, Node right) {
this.value = value;
...
}
Node copy() {
Node left = null;
Node right = null;
if (this.left != null) {
... |
16,262,194 | file upload in cakephp 2.3 | <p>I'm new in cakephp and i'm trying to create a simple file upload with cakephp 2.3 here is my controller</p>
<pre><code>public function add() {
if ($this->request->is('post')) {
$this->Post->create();
$filename = WWW_ROOT. DS . 'documents'.DS.$this->data['posts']['doc_file']['na... | 16,277,245 | 4 | 0 | null | 2013-04-28 11:05:05.11 UTC | 3 | 2016-05-05 07:33:56.223 UTC | 2013-04-30 23:51:05.397 UTC | null | 2,328,858 | null | 2,328,858 | null | 1 | 9 | cakephp|file-upload|cakephp-2.3 | 49,701 | <p>You seem to be using the wrong 'key' to access the posted data;</p>
<pre><code>$this->data['posts'][....
</code></pre>
<p>Should match the 'alias' of you Model; <em>singular</em> and a <em>captial</em> first letter</p>
<pre><code>$this->data['Post'][....
</code></pre>
<p>Also, <code>$this->data</code> is a ... |
410,146 | Vector graphics in Javascript? | <p>One of the advantages of Flash/Flex is that you can use vector graphics (SVG), which is nice. I did a bit of searching around and came across this <a href="http://www.walterzorn.com/jsgraphics/jsgraphics_e.htm" rel="noreferrer">Javascript vector graphics library</a>. It's pretty simple stuff but it got me thinking... | 410,149 | 7 | 1 | null | 2009-01-04 00:20:40.587 UTC | 10 | 2019-03-02 15:17:40.573 UTC | 2009-01-04 00:41:24.82 UTC | cletus | 18,393 | cletus | 18,393 | null | 1 | 17 | javascript|html|vector-graphics | 17,608 | <p>I've used <a href="http://raphaeljs.com/" rel="noreferrer">Raphaël Javascript Library</a> and it worked quite well. Currently the library supports Firefox 3.0+, Safari 3.0+, Opera 9.5+ and Internet Explorer 6.0+. </p> |
196,754 | What does "select((select(s),$|=1)[0])" do in Perl? | <p>I've seen some horrific code written in Perl, but I can't make head nor tail of this one:</p>
<pre><code>select((select(s),$|=1)[0])
</code></pre>
<p>It's in some networking code that we use to communicate with a server and I assume it's something to do with buffering (since it sets <code>$|</code>).</p>
<p>But I... | 196,768 | 7 | 1 | null | 2008-10-13 05:00:53.507 UTC | 9 | 2016-10-30 01:21:17.83 UTC | 2016-10-30 01:21:17.83 UTC | brian d foy | 14,860 | Pax Diablo | 14,860 | null | 1 | 35 | perl|select|buffering | 11,633 | <p>It's a nasty little idiom for setting autoflush on a filehandle other than STDOUT. </p>
<p><code>select()</code> takes the supplied filehandle and (basically) replaces STDOUT with it, and it returns the old filehandle when it's done. </p>
<p>So <code>(select($s),$|=1)</code> redirects the filehandle (remember <cod... |
159,744 | Converting MS Word Documents to PDF in ASP.NET | <p>Similar questions have been asked, but nothing exactly like mine, so here goes.</p>
<p>We have a collection of Microsoft Word documents on an ASP.NET web server with merge fields whose values are filled in as a result of user form submissions. After the field merge, the server must convert the document to PDF and s... | 204,306 | 8 | 1 | null | 2008-10-01 21:05:21.317 UTC | 12 | 2012-03-24 11:51:41.657 UTC | null | null | null | glaxaco | 2,144 | null | 1 | 20 | asp.net|pdf|pdf-generation | 52,052 | <p>It's not exactly Open Source, but Aspose has a couple products which can do that,</p>
<p><a href="http://www.aspose.com/categories/file-format-components/aspose.pdf.kit-for-.net-and-java/default.aspx" rel="noreferrer">Aspose.Pdf.Kit</a></p>
<blockquote>
<p>Aspose.Pdf.Kit is a non-graphical PDF® document manipula... |
61,233 | The Best Way to shred XML data into SQL Server database columns | <p>What is the best way to shred XML data into various database columns? So far I have mainly been using the nodes and value functions like so:</p>
<pre><code>INSERT INTO some_table (column1, column2, column3)
SELECT
Rows.n.value('(@column1)[1]', 'varchar(20)'),
Rows.n.value('(@column2)[1]', 'nvarchar(100)'),
Rows.n.v... | 4,671,129 | 8 | 2 | null | 2008-09-14 09:39:29.613 UTC | 33 | 2017-07-03 14:17:37.683 UTC | null | null | null | null | 5,769 | null | 1 | 28 | sql-server|xml | 72,311 | <p>Stumbled across this question whilst having a very similar problem, I'd been running a query processing a 7.5MB XML file (~approx 10,000 nodes) for around 3.5~4 hours before finally giving up.</p>
<p>However, after a little more research I found that having typed the XML using a schema and created an XML Index (I'd... |
590,007 | Python or IronPython | <p>How does IronPython stack up to the default Windows implementation of Python from python.org? If I am learning Python, will I be learning a subtley different language with IronPython, and what libraries would I be doing without?</p>
<p>Are there, alternatively, any pros to IronPython (not including .NET IL compiled... | 590,782 | 8 | 0 | null | 2009-02-26 10:41:16.173 UTC | 5 | 2009-02-28 21:04:34.037 UTC | 2009-02-28 21:04:34.037 UTC | null | 5,302 | lagerdalek | 5,302 | null | 1 | 33 | python|ironpython|cpython | 14,911 | <p>There are a number of important differences:</p>
<ol>
<li>Interoperability with other .NET languages. You can use other .NET libraries from an IronPython application, or use IronPython from a C# application, for example. This interoperability is increasing, with a movement toward greater support for dynamic types... |
189,031 | Set same icon for all my Forms | <p>Is there any way to set the same icon to all my forms without having to change one by one?
Something like when you setup <code>GlobalAssemblyInfo</code> for all your projects inside your solution.</p> | 189,050 | 8 | 1 | null | 2008-10-09 20:16:56.137 UTC | 7 | 2020-03-03 12:51:18.3 UTC | 2014-03-05 08:45:01.56 UTC | Matias | 505,893 | Matias | 4,386 | null | 1 | 36 | c#|.net|winforms|icons | 31,725 | <p>One option would be to inherit from a common base-Form that sets the Icon in the constructor (presumably from a resx). Another option might be <a href="http://www.postsharp.org/" rel="noreferrer">PostSharp</a> - it seems like it should be possible to do this (set .Icon) via AOP; not trivial, though. Finally, you cou... |
60,160 | How to escape text for regular expression in Java | <p>Does Java have a built-in way to escape arbitrary text so that it can be included in a regular expression? For example, if my users enter "$5", I'd like to match that exactly rather than a "5" after the end of input.</p> | 60,161 | 8 | 0 | null | 2008-09-12 23:36:36.687 UTC | 61 | 2018-11-28 21:30:48.15 UTC | null | null | null | Matt | 2,338 | null | 1 | 350 | java|regex|escaping | 233,133 | <p>Since <a href="http://download.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html#quote(java.lang.String)" rel="noreferrer">Java 1.5, yes</a>:</p>
<pre><code>Pattern.quote("$5");
</code></pre> |
224,026 | Javascript style dot notation for dictionary keys unpythonic? | <p>I've started to use constructs like these:</p>
<pre><code>class DictObj(object):
def __init__(self):
self.d = {}
def __getattr__(self, m):
return self.d.get(m, None)
def __setattr__(self, m, v):
super.__setattr__(self, m, v)
</code></pre>
<p>Update: based on this thread, I've re... | 224,722 | 12 | 2 | null | 2008-10-22 00:08:01.41 UTC | 16 | 2019-10-23 02:14:23.973 UTC | 2008-10-24 13:17:12.723 UTC | Parand | 13,055 | Parand | 13,055 | null | 1 | 25 | python|coding-style | 9,411 | <p>This is a simpler version of your DictObj class:</p>
<pre><code>class DictObj(object):
def __getattr__(self, attr):
return self.__dict__.get(attr)
>>> d = DictObj()
>>> d.something = 'one'
>>> print d.something
one
>>> print d.somethingelse
None
>>>
</code>... |
441,412 | Is there a link to the "latest" jQuery library on Google APIs? | <p>I use the following for a jQuery link in my <code><script></code> tags:</p>
<pre><code>http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.js
</code></pre>
<p>Is there a link to the "latest" version? Something like the following (which doesn't work):</p>
<pre><code>http://ajax.googleapis.com/ajax/libs/... | 441,429 | 12 | 14 | null | 2009-01-14 00:08:57.947 UTC | 248 | 2019-07-23 16:13:57.2 UTC | 2016-01-22 20:21:37.543 UTC | null | 1,946,501 | Nick Pierpoint | 4,003 | null | 1 | 799 | javascript|jquery|google-api | 1,022,602 | <p><strong>Up until jQuery 1.11.1</strong>, you could use the following URLs to get the latest version of jQuery:</p>
<ul>
<li><a href="https://code.jquery.com/jquery-latest.min.js" rel="noreferrer">https://code.jquery.com/jquery-latest.min.js</a> - jQuery hosted (minified)</li>
<li><a href="https://code.jquery.com/jq... |
971,249 | How to find the cause of a malloc "double free" error? | <p>I'm programming an application in Objective-C and I'm getting this error:</p>
<blockquote>
<p>MyApp(2121,0xb0185000) malloc: *** error for object 0x1068310: double free<br>
*** set a breakpoint in malloc_error_break to debug</p>
</blockquote>
<p>It is happening when I release an NSAutoreleasePool and I... | 971,616 | 13 | 7 | null | 2009-06-09 16:49:50.4 UTC | 43 | 2017-10-13 05:21:51.907 UTC | 2017-10-13 05:21:51.907 UTC | null | 1,033,581 | null | 104,291 | null | 1 | 82 | iphone|objective-c|memory-management|malloc|autorelease | 77,888 | <p>You'll find out what the object is when you break in the debugger. Just look up the call stack and you will find where you free it. That will tell you which object it is.</p>
<p>The easiest way to set the breakpoint is to:</p>
<blockquote>
<ol>
<li>Go to Run -> Show -> Breakpoints (<kbd>ALT</kbd>-<kbd>Command<... |
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