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Fastest way to convert string to integer in PHP

Using PHP, what's the fastest way to convert a string like this: "123" to an integer? 8 Answers ...
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Understanding “randomness”

I can't get my head around this, which is more random? 28 Answers 28 ...
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Does ruby have real multithreading?

I know about the "cooperative" threading of ruby using green threads . How can I create real "OS-level" threads in my application in order to make use of multiple cpu cores for processing? ...
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How to validate an email address in JavaScript

Is there a regular expression to validate an email address in JavaScript? 95 Answers 9...
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Convert NaN to 0 in javascript

Is there a way to convert NaN values to 0 without an if statement: 11 Answers 11 ...
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CSS Background Opacity [duplicate]

I am using something similar to the following code: 8 Answers 8 ...
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Fast permutation -> number -> permutation mapping algorithms

I have n elements. For the sake of an example, let's say, 7 elements, 1234567. I know there are 7! = 5040 permutations possible of these 7 elements. ...
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How to check if a string is a valid hex color representation?

For example: 7 Answers 7 ...
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Trees in Twitter Bootstrap [closed]

I have been trying to work on creating a tree (like a directory tree) that uses as much CSS and as little JS as possible (only for states, etc), and I want to know if there are some good existing tree plugins for bootstrap or jquery-ui bootstrap . ...
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What Process is using all of my disk IO

If I use "top" I can see what CPU is busy and what process is using all of my CPU. 7 Answers ...