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Check if PHP session has already started

...e lazy-loading (only starting the session when it's first needed) then the test in your answer would be perfectly fine. – drewm Jun 6 '11 at 9:53 1 ...
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What is SYSNAME data type in SQL Server?

... 0 0 0 create procedure dbo.yyy_test ( @col_one nvarchar(max), @col_two nvarchar(max) = 'default', @col_three nvarchar(1), @col_four nvarchar(1) = 'default', @col_five nvarchar(128), @col_six nvarchar(128) = 'defau...
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Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_

I was looking for the fastest way to popcount large arrays of data. I encountered a very weird effect: Changing the loop variable from unsigned to uint64_t made the performance drop by 50% on my PC. ...
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What's the difference between __PRETTY_FUNCTION__, __FUNCTION__, __func__?

...s is probably what most people googling this wanted to see. For GCC: $ cat test.cpp #include <iostream> int main(int argc, char **argv) { std::cout << __func__ << std::endl << __FUNCTION__ << std::endl << __PRETTY_FUNCTION__ <&...
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Why does Javascript's regex.exec() not always return the same value? [duplicate]

...substring of str specified by the regular expression's lastIndex property (test will also advance the lastIndex property). Since you are using the g flag, exec continues from the last matched string until it gets to the end (returns null), then starts over. Personally, I prefer to go the other ...
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What's the difference between dynamic (C# 4) and var?

...X { public int Y {get;set;} } dynamic(X) s = GetSpecialX(); Calling string test = s.Y; would generate a compiler error because the compiler knows about Y but string test2 = s.Z would compile fine and be checked at run-time. I could think of much value of such half-dynamic classes! ...
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Do I need to disable NSLog before release Application?

...e DLog( s, ... ) #endif Now instead of NSLog use DLog everywhere. When testing and debugging, you'll get debug messages. When you're ready to release a beta or final release, all those DLog lines automatically become empty and nothing gets emitted. This way there's no manual setting of variables...
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“:” (colon) in C struct - what does it mean? [duplicate]

...eof (int). struct { int a : 4; int b : 13; int c : 1; } test1; struct { short a : 4; short b : 3; } test2; struct { char a : 4; char b : 3; } test3; struct { char a : 4; short b : 3; } test4; printf("test1: %d\ntest2: %d\ntest3: %d\n...
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How to read and write INI file with Python3?

... Here's a complete read, update and write example. Input file, test.ini [section_a] string_val = hello bool_val = false int_val = 11 pi_val = 3.14 Working code. try: from configparser import ConfigParser except ImportError: from ConfigParser import ConfigParser # ver. < 3...
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Deciding between HttpClient and WebClient

...--------------+--------------------------------------------+ | Mocking and testing WebClient is difficult | Mocking and testing HttpClient is easy | +--------------------------------------------+--------------------------------------------+ | Supports FTP | No suppo...