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How to decide font color in white or black depending on background color?

...dations is (L1 + 0.05) / (L2 + 0.05), where L1 is the luminance of the lightest color and L2 is the luminance of the darkest on a scale of 0.0-1.0. The luminance of black is 0.0 and white is 1.0, so substituting those values lets you determine the one with the highest contrast. If the contrast for b...
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What’s the difference between “Array()” and “[]” while declaring a JavaScript array?

... Unfortunately that test is improperly prepared. It's testing an initialization of an Array with initializations of arrays followed by Array access. There's no control to prove that the browsers are actually pre-allocating the memory (which the ...
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JavaScript checking for null vs. undefined and difference between == and ===

...heck if a variable is either undefined or null and nothing else: function test(val) { return val == null; } test(null); # => true test(undefined); # => true share | improve this a...
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Https Connection Android

...I'm using WebView, however, and only need to connect to a https server for test purposes. (The client can't provision one with a matching FQDN, nor can they test on http.) Is there any way to tackle this when using WebView? Do I just drop this code in the Activity where the WebView is and "it just w...
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Checking if a folder exists using a .bat file [closed]

...low.com/a/8669636/1012053 for a technique that has been reliable in all my testing. – dbenham Dec 8 '15 at 17:11 @Alex...
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How to use transactions with dapper.net?

...action . For example it can be used to great effect when unit/integration testing code that does database calls where you want to roll back after. Just float a TransactionScope, test the code, and dispose during test cleanup. – Larry Smith Nov 14 '17 at 21:04...
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Which is faster: while(1) or while(2)?

...on for each iteration. First example (returning 1): .L4: call x testl %eax, %eax jne .L4 movl $0, %eax addq $32, %rsp popq %rbp ret .seh_endproc .ident "GCC: (tdm64-2) 4.8.1" Second example (returning sqrt(7)): .L4: call x xorpd %xmm1,...
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Gets byte array from a ByteBuffer in java

... when the backing array is longer, so you must not use their equality as a test of when bb.array() is correct. See ByteBuffer.slice(). – cdunn2001 Sep 26 '12 at 0:01 1 ...
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For files in directory, only echo filename (no path)

... basename won't work correctly for files with space. Example: pwd output: /test 1, basename $(pwd) output: test. Tested on OS X and Ubuntu Server (14.04). Native bash solution, as @SiegeX recommended, is what worked for me. – Marko Grešak Nov 9 '14 at 0:56 ...
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How do I convert a org.w3c.dom.Document object to a String?

... I would not write a unit test for such code. You would be testing framework plumbing more than your application logic. Checking if the plumbing 'works' can occur as part of an integration or end-to-end test. – Adriaan Koster ...