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How can I check if a background image is loaded?

...t it in CSS — so images are start downloading before css file — it's called preloading. – jcubic Feb 20 '11 at 17:05 ...
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nonlocal keyword in Python 2.x

...nswer by Elias Zamaria, but contrary to that answer does handle multiple calls of the outer function correctly. The "variable" inner.y is local to the current call of outer. Only it isn't a variable, since that is forbidden, but an object attribute (the object being the function inner itself). This...
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Interface defining a constructor signature?

...ult in Google some 7 years later, I thought I would chip in here - specifically to show how you could use an abstract base class in tandem with your existing Interface and maybe cut down on the amount of refactoring needed in the future for similar situations. This concept has already been hinted a...
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nodejs get file name from absolute path?

... extension from filename, you can use https://nodejs.org/api/path.html#path_path_basename_path_ext path.basename('/foo/bar/baz/asdf/quux.html', '.html'); share | improve this answer | ...
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OS detecting makefile

... still use solely uname, but you have to deal with if/else blocks to check all MinGW, Cygwin, etc. variations. The environment variable OS is always set to "Windows_NT" on different Windows versions (see %OS% environment variable on Wikipedia). An alternative of OS is the environment variable MSVC (...
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static const vs #define

... Personally, I loathe the preprocessor, so I'd always go with const. The main advantage to a #define is that it requires no memory to store in your program, as it is really just replacing some text with a literal value. It also has...
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Do I have to Close() a SQLConnection before it gets disposed?

Per my other question here about Disposable objects , should we call Close() before the end of a using block? 8 Answers ...
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How to perform case-insensitive sorting in JavaScript?

... Do mind that localeCompare's advanced options are not yet supported on all platforms/browsers. I know they are not used in this example, but just wanted to add for clarity. See MDN for more info – Ayame__ Jan 9 '14 at 15:05 ...
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How can I listen for a click-and-hold in jQuery?

...tartTrigger(e) { var $elem = $(this); $elem.data('mouseheld_timeout', setTimeout(function() { $elem.trigger('mouseheld'); }, e.data)); } function stopTrigger() { var $elem = $(this); clearTimeout($elem.data('mouseheld_timeout')); } ...
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How to make vim paste from (and copy to) system's clipboard?

...ent working file. It so happens I have to either open gedit or type it manually. 31 Answers ...