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Which characters are valid in CSS class names/selectors?

What characters/symbols are allowed within the CSS class selectors? I know that the following characters are invalid , but what characters are valid ? ...
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How do I import other TypeScript files?

... You can use the --all flag with tsc on your main .ts file. The compiler figures out all the dependencies based on your reference tags and generates a single output .js file for the entire application: tsc --out app.js main.ts ...
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Live-stream video from one android phone to another over WiFi

...elopers for sample code, stackoverflow, google, android blogs but nothing. All I can find are some sort of phone-to-desktop or desktop-to-phone solutions for streaming, but nothing that I can borrow in my implementation. ...
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Does C have a “foreach” loop construct?

Almost all languages have a foreach loop or something similar. Does C have one? Can you post some example code? 12 Answer...
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Creating C macro with ## and __LINE__ (token concatenation with positioning macro)

...lizing) unless the result needs to be "stringified". Gcc has features but ALL can be done with plain C version 1 (and some argue Berkeley 4.3 C is so much faster it's worth learning how to use). **Clang (llvm) DOES NOT DO WHITE SPACE CORRECTLY for macro expansion - it adds whitespace (which certai...
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If a folder does not exist, create it

...ut, you don't need to check if it exists first. From the docs Any and all directories specified in path are created, unless they already exist or unless some part of path is invalid. If the directory already exists, this method does not create a new directory, but it returns a DirectoryInfo obj...
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Microsecond timing in JavaScript

... As alluded to in Mark Rejhon's answer, there is an API available in modern browsers that exposes sub-millisecond resolution timing data to script: the W3C High Resolution Timer, aka window.performance.now(). now() is better tha...
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How do I get Pyflakes to ignore a statement?

... # noqa only ignores certain warnings/errors, but not all -- in order to deal with this, a workaround involves installing/using the package at pypi.python.org/pypi/flake8-respect-noqa – Mark Jan 18 '16 at 0:15 ...
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Installing Python packages from local file system folder to virtualenv with pip

Is it possible to install packages using pip from the local filesystem? 10 Answers 10 ...
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Maven dependency spring-web vs spring-webmvc

...n application which will be a rest api and you will not need view (jsp) at all, what you should use? spring-web or spring-webmvc? – Mohammad Eghlima Apr 25 '19 at 18:24 1 ...