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Is there a “null coalescing” operator in JavaScript?
...t now supports the nullish coalescing operator (??). It returns its right-hand-side operand when its left-hand-side operand is null or undefined, and otherwise returns its left-hand-side operand.
Please check compatibility before using it.
The JavaScript equivalent of the C# null coalescing ope...
What does the Ellipsis object do?
...nterpretation is purely up to whatever implements the __getitem__ function and sees Ellipsis objects there, but its main (and intended) use is in the numpy third-party library, which adds a multidimensional array type. Since there are more than one dimensions, slicing becomes more complex than just...
Multiple modals overlay
...
After seeing many fixes for this, and none of them were exactly what I needed I've came up with a even shorter solution that is inspired by @YermoLamers & @Ketwaroo.
Backdrop z-index fix
This solution uses a setTimeout because the .modal-backdrop isn't c...
“Insert if not exists” statement in SQLite
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If you have a table called memos that has two columns id and text you should be able to do like this:
INSERT INTO memos(id,text)
SELECT 5, 'text to insert'
WHERE NOT EXISTS(SELECT 1 FROM memos WHERE id = 5 AND text = 'text to insert');
If a record already contains a row where ...
Generate C# class from XML
...D:\temp\test.cs'.
Notes
Answer how to change directory in Developer Command Prompt to d:\temp may be useful.
If you generate classes for multi-dimensional array, there is a bug in XSD.exe generator, but there are workarounds.
...
What __init__ and self do on Python?
I'm learning the Python programming language and I've came across something I don't fully understand.
18 Answers
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Why is string concatenation faster than array join?
...owsers have also optimized string concatenation, so Safari, Opera, Chrome, and Internet Explorer 8 also show better performance using the plus operator. Internet Explorer prior to version 8 didn’t have such an optimization, and so the array technique is always faster than the plus operator.
...
psql: FATAL: Peer authentication failed for user “dev”
...nfig files, especially when you don't have a clue about what you are doing and just following SO answer to solve your problem.
– borisano
Nov 24 '15 at 15:07
1
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Very slow compile times on Visual Studio 2005
...udio 2005, you will find the option in Tools > Options... > Projects and Solutions > Build and Run > maximum number of parallel project builds.
Disable your anti-virus software for .ilk, .pdb, .cc, .h files and only check for viruses on modify. Disable scanning the directory where your...
Chrome DevTools Devices does not detect device when plugged in
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To get the functionality up and running:
Follow steps at https://developers.google.com/chrome-developer-tools/docs/remote-debugging
Install Windows USB driver http://developer.samsung.com/android/tools-sdks/Samsung-Android-USB-Driver-for-Windows
Insta...