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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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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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How to use glOrtho() in OpenGL?

I can't understand the usage of glOrtho . Can someone explain what it is used for? 3 Answers ...
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String concatenation in Ruby

I am looking for a more elegant way of concatenating strings in Ruby. 16 Answers 16 ...
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Validate that a string is a positive integer

I would like the simplest fail-safe test to check that a string in JavaScript is a positive integer. 13 Answers ...
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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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Is MATLAB OOP slow or am I doing something wrong?

I'm experimenting with MATLAB OOP , as a start I mimicked my C++'s Logger classes and I'm putting all my string helper functions in a String class, thinking it would be great to be able to do things like a + b , a == b , a.find( b ) instead of strcat( a b ) , strcmp( a, b ) , retrieve first...
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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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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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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 . ...