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Is there an alternative sleep function in C to milliseconds?

... Also note that when compiling with gcc -Wall -g3 -std=c11 -o sleep_test sleep_test.c && ./sleep_test on Linux Ubuntu, with gcc version 4.8.4, I get the following warning: warning: implicit declaration of function ‘usleep’ [-Wimplicit-function-declaration]. The solution is to add ...
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PHP: How to send HTTP response code?

...04); I recommend the 2nd one. The first does work on all browsers I have tested, but some minor browsers or web crawlers may have a problem with a header line that only contains a colon. The header field name in the 2nd. variant is of course not standardized in any way and could be modified, I jus...
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Java JUnit: The method X is ambiguous for type Y

I had some tests working fine. Then, I moved it to a different package, and am now getting errors. Here is the code: 3 Answ...
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How to check internet access on Android? InetAddress never times out

... Yes, very fast ;-) Is there no reliable way to check internet, other than testing something on the internet? Not as far as I know, but let me know, and I will edit my answer. What if the DNS is down? Google DNS (e.g. 8.8.8.8) is the largest public DNS in the world. As of 2013 it served 130 billio...
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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...