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std::vector performance regression when enabling C++11

...ck(Item());) $ g++ -std=c++11 -O3 -flto regr.cpp && perf stat -r 10 ./a.out Performance counter stats for './a.out' (10 runs): 35.426793 task-clock # 0.986 CPUs utilized ( +- 1.75% ) 4 context-switches # 0.116 K/sec ...
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Two color borders

...utline is inside of the shadow; in FireFox it is outside, so -moz-outline: 0 is useful to ensure that you don't get a gnarly line around your beautiful CSS drop shadow). .someclass { border: 1px solid blue; outline: 1px solid darkblue; } Edit: Some people have remarked that outline doesn't ji...
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How can I convert a Unix timestamp to DateTime and vice versa?

... 1059 Here's what you need: public static DateTime UnixTimeStampToDateTime( double unixTimeStamp ) ...
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How can I quickly sum all numbers in a file?

...; } -e syntax OK Just for giggles, I tried this with a file containing 1,000,000 numbers (in the range 0 - 9,999). On my Mac Pro, it returns virtually instantaneously. That's too bad, because I was hoping using mmap would be really fast, but it's just the same time: use 5.010; use File::Map qw(ma...
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How do I get an object's unqualified (short) class name?

... jeremysawesome 6,15733 gold badges3030 silver badges3232 bronze badges answered Nov 11 '13 at 15:09 lonesomedaylonesomeday ...
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How to iterate for loop in reverse order in swift?

... With Swift 2.0 it is now: 5.stride(to: 1, by: -1) or 5.stride(through: 1, by: -1) – Binarian Sep 21 '15 at 9:23 6 ...
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The $.param( ) inverse function in JavaScript / jQuery

...eparam – Felipe Castro Jan 8 '13 at 0:52 2 Unfortunately the github page hasn't seen any updates ...
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In php, is 0 treated as empty?

...ollowing things are considered to be empty: "" (an empty string) 0 (0 as an integer) 0.0 (0 as a float) "0" (0 as a string) NULL FALSE array() (an empty array) var $var; (a variable declared, but without a value in a class) Note that this is exactly the same list as for a ...
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Fast Bitmap Blur For Android SDK

... I'm looping through the pixels of an image to blur it. This takes about 30 seconds on a 640x480 image. 19 Answers ...
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Does JavaScript have a method like “range()” to generate a range within the supplied bounds?

... Numbers [...Array(5).keys()]; => [0, 1, 2, 3, 4] Character iteration String.fromCharCode(...[...Array('D'.charCodeAt(0) - 'A'.charCodeAt(0) + 1).keys()].map(i => i + 'A'.charCodeAt(0))); => "ABCD" Iteration for (const x of Array(5).keys()) { co...