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X-Frame-Options Allow-From multiple domains

...olicy header, which along many other policies can white-list what URLs are allowed to host your page in a frame, using the frame-ancestors directive. frame-ancestors supports multiple domains and even wildcards, for example: Content-Security-Policy: frame-ancestors 'self' example.com *.example.net ...
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What's the bad magic number error?

...the pyc file or trying to run a pyc from a different version of python (usually later) than your interpreter. If they are your pyc files, just delete them and let the interpreter re-compile the py files. On UNIX type systems, that could be something as simple as: rm *.pyc or: find . -name '*.py...
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split string only on first instance of specified character

...Very elegant. Works like a charm. Thank you. – Ofeargall Jan 5 '11 at 18:43 12 Just to be clear, ...
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Parse JSON String into a Particular Object Prototype in JavaScript

...olution below that applies Object.assign(..) recursively that can automatically resolve properties (with a bit of information provided in advance) – vir us Dec 8 '17 at 16:13 ...
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In Flux architecture, how do you manage Store lifecycle?

... In a Flux app there should only be one Dispatcher. All data flows through this central hub. Having a singleton Dispatcher allows it to manage all Stores. This becomes important when you need Store #1 update itself, and then have Store #2 update itself based on both the Acti...
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Why does int i = 1024 * 1024 * 1024 * 1024 compile without error?

... @WouterLievens, overflow is normally an "unusual" condition, if not an outright error condition. It is a result of finite-precision math, which most people are not intuitively expecting to happen when they do math. In some cases, like -1 + 1, it's harmless;...
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Is there any way to git checkout previous branch?

... wow, I totally should have just tried it! figured - was a shell-ism, and that if the functionality was in git, it would be something different – Matt Briggs Aug 26 '11 at 16:17 ...
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Why do you need to invoke an anonymous function on the same line?

...ition. Because it has no name (it's anonymous duh!), you won't be able to call it anymore. If you don't put semicolon then function could still be executed. – SolutionYogi Jul 16 '09 at 20:32 ...
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Determine if Android app is being used for the first time

... Beware for Android 6.0 (API 23 - Marshmallow) or above auto backup (developer.android.com/guide/topics/data/autobackup.html)is enabled by default. If the users uninstalls and then reinstalls the app the shared preferences will be recovered. So on reinstalls you ca...
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Parse config files, environment, and command-line arguments, to get a single collection of options

...d-line argument parsing ( argparse ). I want to write a program that does all those, and also: 11 Answers ...