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Post parameter is always null
...The official ASP.NET site was updated today with an excellent explanation: https://docs.microsoft.com/en-us/aspnet/web-api/overview/advanced/sending-html-form-data-part-1
In a nutshell, when sending a single simple type in the body, send just the value prefixed with an equal sign (=), e.g. body:
=...
How to get a number of random elements from an array?
...ed with .indexOf(j) > -1.
Performance against the accepted answer:
https://jsperf.com/pick-random-elements-from-an-array
The performance difference is the greatest on Safari.
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improv...
postgresql list and order tables by size
...user_tables ORDER BY pg_total_relation_size(relid) DESC;
taken from here https://wiki-bsse.ethz.ch/display/ITDOC/Check+size+of+tables+and+objects+in+PostgreSQL+database
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Event on a disabled input
...disabled").attr("disabled", false).focus();
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<div>
<input type="text" disabled />
</div>
...
Filtering for empty or NULL names in a queryset
...ch as CharField or TextField. Read the documentation for the explanation:
https://docs.djangoproject.com/en/dev/ref/models/fields/#null
Solution:
You can also chain together methods on QuerySets, I think. Try this:
Name.objects.exclude(alias__isnull=True).exclude(alias="")
That should give you ...
Undoing a 'git push'
...www.kernel.org/pub/software/scm/git/docs/user-manual.html#fixing-mistakes
https://git-scm.com/book/be/v2/Git-Basics-Undoing-Things
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How to pass boolean values to a PowerShell script from a command prompt
...n. I had the same problem, and for once RTFM actually solved it. Almost.
https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_powershell_exe
Documentation for the -File parameter states that
"In rare cases, you might need to provide a Boolean value for a switc...
Synchronous request in Node.js
... Raynos' solution as well, but I prefer a different flow control library.
https://github.com/caolan/async
Depending on whether you need the results in each subsequent function, I'd either use series, parallel, or waterfall.
Series when they have to be serially executed, but you don't necessarily ...
default select option as blank
...
This should help :
https://www.w3schools.com/tags/att_select_required.asp
<form>
<select required>
<option value="">None</option>
<option value="volvo">Volvo</option>
<option value="saab"&...
Cross-Origin Request Headers(CORS) with PHP headers
...l idea of what is involved. For the nitty-gritty low-down, read:
*
* - https://developer.mozilla.org/en/HTTP_access_control
* - http://www.w3.org/TR/cors/
*
*/
function cors() {
// Allow from any origin
if (isset($_SERVER['HTTP_ORIGIN'])) {
// Decide if the origin in $_SERVE...