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PHP shell_exec() vs exec()

... Daniel A. WhiteDaniel A. White 170k4242 gold badges334334 silver badges403403 bronze badges ...
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What is the difference between “px”, “dip”, “dp” and “sp”?

...sed on the physical density of the screen. These units are relative to a 160 dpi screen, so one dp is one pixel on a 160 dpi screen. The ratio of dp-to-pixel will change with the screen density, but not necessarily in direct proportion. Note: The compiler accepts both "dip" and ...
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Do try/catch blocks hurt performance when exceptions are not thrown?

... +100 Check it. static public void Main(string[] args) { Stopwatch w = new Stopwatch(); double d = 0; w.Start(); for (in...
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Rolling median algorithm in C

...| edited Dec 12 '14 at 17:05 Josh O'Brien 144k2424 gold badges318318 silver badges421421 bronze badges a...
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Javascript and regex: split string and keep the separator

... 106 Use (positive) lookahead so that the regular expression asserts that the special character exis...
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Achieving bright, vivid colors for an iOS 7 translucent UINavigationBar

... iOS 7.0.3 UPDATE: As you see above 7.0.3 changed things. I've updated my gist. Hopefully this will just go away as people upgrade. Original Answer: I ended up with a hack combining the two of the other answers. I'm subclassing UIN...
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How to install Java SDK on CentOS?

...n you read this, the lastest available version may be different. java-1.7.0-openjdk.x86_64 The above package alone will only install JRE. To also install javac and JDK, the following command will do the trick: $ yum install java-1.7.0-openjdk* These packages will be installing (as well as thei...
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What is IP address '::1'?

...1 is the loopback address in IPv6. Think of it as the IPv6 version of 127.0.0.1. See http://en.wikipedia.org/wiki/Localhost share | improve this answer | follow ...
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GetType() can lie?

...dFoo foo = new BadFoo(); Console.WriteLine("n1 and n2 are the same type: {0}", Object.ReferenceEquals(n1.GetType(), foo.GetType())); // output: // n1 and n2 are the same type: True so, yikes, you've successfully lied, right? Well, yes and no... Consider that using this as an e...
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How do I view the list of functions a Linux shared library is exporting?

... 320 What you need is nm and its -D option: $ nm -D /usr/lib/libopenal.so.1 . . . 00012ea0 T alcSetT...