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How to send an email from JavaScript
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If the program which open the page have already e-mail client features.. (like Opera 12.50) then, it open the link as a regular URL. Their is also Thunderbird which have the firefox gecko engine: it can open web pages from hy...
How to disable Django's CSRF validation?
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If you just need some views not to use CSRF, you can use @csrf_exempt:
from django.views.decorators.csrf import csrf_exempt
@csrf_exempt
def my_view(request):
return HttpResponse('Hello world')
You can find more examp...
How to do a less than or equal to filter in Django queryset?
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StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
...
How can I hash a password in Java?
...hentication
{
/**
* Each token produced by this class uses this identifier as a prefix.
*/
public static final String ID = "$31$";
/**
* The minimum recommended cost, used by default
*/
public static final int DEFAULT_COST = 16;
private static final String ALGORITHM = "PBKDF...
JS: Check if date is less than 1 hour ago?
...(date) => {
const HOUR = 1000 * 60 * 60;
const anHourAgo = Date.now() - HOUR;
return date > anHourAgo;
}
Using the Moment library:
const lessThanOneHourAgo = (date) => {
return moment(date).isAfter(moment().subtract(1, 'hours'));
}
Shorthand syntax with Moment:
const ...
What is the best way to find the users home directory in Java?
...nding Windows API in a very nice way. In particular, using Shell32Util.getKnownFolderPath(...) in combination with one of the constants from the KnownFolders class should be appropriate. The older getFolderPath API function is deprecated since Windows Vista.
– Sebastian Marschi...
Best algorithm for detecting cycles in a directed graph [closed]
...(all reachable nodes are visited along with the current one) color coding, if a grey node finds another grey node then we've a cycle. [Pretty much what we've in Cormen's algorithm book]. Wondering if 'Tarjan's algorithm' has any benefit over such DFS!!
– KGhatak
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Realistic usage of the C99 'restrict' keyword?
...dest[i] = src1[i]*src2[i];
}
}
The compiler needs to properly handle if dest, src1, and src2 overlap, meaning it must do one multiplication at a time, from start to the end. By having restrict, the compiler is free to optimize this code by using the vector instructions.
Wikipedia has an entr...
The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead [dupl
...7). Instead, you should take this opportunity to migrate your application now, before it's too late.
Note also that this technique will suppress all E_DEPRECATED messages, not just those to do with the ext/mysql extension: therefore you may be unaware of other upcoming changes to PHP that would af...
What's the difference between dist-packages and site-packages?
I'm a bit miffed by the python package installation process. Specifically, what's the difference between packages installed in the dist-packages directory and the site-packages directory?
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