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Why do Objective-C files use the .m extension?

Since I started learning Objective-C and Cocoa, I've been wondering why they have chosen the extension .m for the implementation files - was it supposed to mean something, or was it just a random letter? ...
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Real mouse position in canvas [duplicate]

....clientY - rect.top }; } Just call it from your event with the event and canvas as arguments. It returns an object with x and y for the mouse positions. As the mouse position you are getting is relative to the client window you'll have to subtract the position of the canvas element to convert...
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Obstructed folders in Subversion

...ve deleted or moved the .svn subdirectories (without going through SVN commands), so SVN has a corrupted view of the working copy. Try a cleanup first, and if that doesn't solve it, revert (or update) the directory to restore the subdirectory .svn folders. ...
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google oauth2 redirect_uri with several parameters

...asdafwswdwefwsdg, Retrieve the state, base64UrlDecode it, json_decode it, and you have your data. See more about google OAuth 2 here: http://code.google.com/apis/accounts/docs/OAuth2.html share | ...
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How many GCC optimization levels are there?

...e even more) -Ofast (optimize very aggressively to the point of breaking standard compliance) -Og (Optimize debugging experience. -Og enables optimizations that do not interfere with debugging. It should be the optimization level of choice for the standard edit-compile-debug cycle, offeri...
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Hidden features of Windows batch files

What are some of the lesser know, but important and useful features of Windows batch files? 91 Answers ...
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Are (non-void) self-closing tags valid in HTML5?

...ich leads to <br /> meaning <br>> (i.e. <br>>) and <title/hello/ meaning <title>hello</title>). This is an SGML rule that browsers did a very poor job of supporting, and the spec advises authors to avoid the syntax. In XHTML, <foo /> means <foo>...
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uint8_t vs unsigned char

... It wasn't clear in the original question if we were talking about a standard type or not. I'm sure there have been many variations of this naming convention over the years. – Mark Ransom Nov 12 '09 at 22:50 ...
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Mipmap drawables for icons

Since Android 4.3 (Jelly Bean) we can now make use of the res/mipmap folders to store "mipmap" images. 11 Answers ...
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How should I use try-with-resources with JDBC?

...or the outer try in your example, so you can at least go down from 3 to 2, and also you don't need closing ; at the end of the resource list. The advantage of using two try blocks is that all of your code is present up front so you don't have to refer to a separate method: public List<User> g...