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Draw a perfect circle from user's touch

I have this practice project that allows the user to draw on the screen as they touch with their fingers. Very simple App I did as exercise way back. My little cousin took the liberty of drawing things with his finger with my iPad on this App (Kids drawings: circle, lines, etc, whatever came to his ...
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Given an emacs command name, how would you find key-bindings ? (and vice versa)

...-h w command-name If multiple bindings are set for the command they will all be listed. For the inverse, given a key sequence, you can type C-h k key-sequence To get the command that would run. You can get detailed information about a command, also any non-interactive function defined, by t...
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AWK: Access captured group from line pattern

... I prefer 'perl -n -p -e...' over awk for almost all use cases, since it is more flexible, more powerful and has a saner syntax in my opinion. – Peter Tillemans Jun 23 '11 at 18:39 ...
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What's the meaning of “=>” (an arrow formed from equals & greater than) in JavaScript?

... are part of the ECMAscript 6 specification. They are not yet supported in all browsers, but they are partially or fully supported in Node v. 4.0+ and in most modern browsers in use as of 2018. (I’ve included a partial list of supporting browsers below). You can read more in the Mozilla documentat...
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What's the name for hyphen-separated case?

... There isn't really a standard name for this case convention, and there is disagreement over what it should be called. That said, as of 2019, there is a strong case to be made that kebab-case is winning: https://trends.google.com/trends/e...
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Delete multiple records using REST

...est, and can be done RESTfully. If you are creating an API and you want to allow mass changes to resources, you can use REST to do it, but exactly how is not immediately obvious to many. One method is to create a ‘change request’ resource (e.g. by POSTing a body such as records=[1,2,3] to /delet...
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PHP cURL not working - WAMP on Windows 7 64 bit

I got my WAMP installed on my windows 7 64bit. cURL is not working, but still I got it enabled from the WAMP tray. 14 Ans...
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Visual Studio retrieving an incorrect path to a project from somewhere

... .suo file is hidden so you need to enable "show all files and folder" option – ANIL MANE Feb 26 '15 at 16:54 8 ...
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Remap values in pandas column with a dict

... It looks like this doesn't work anymore at all, which isn't surprising given the answer was from 4 years ago. This question needs a new answer given how general the operation is... – PrestonH Nov 21 '17 at 17:01 ...
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How can I recover a lost commit in Git?

... Accidentally dropped a commit I should have kept when rebasing. This totally saved me from redo-ing a couple hours worth of work. – josephting Jan 10 '19 at 6:30 ...