RegexKitLite

Regular expressions are one of the best inventions for developers. If you don’t know what they are, you’re literally missing a world of opportunities. Finding, extracting and replacing substrings from a large chunk of text can be a simple (and clean) task with a regex. Without? Prepare to write a mess of code with nested blocks full of "rangeOfString:" and "substringFromIndex" calls!

On Mac OSX there’s ICU, a static C/C++ library that (among other things) implements Regular Expressions. RegexKitLite is a library that wraps those functions inside easier-to-use Objective-C methods. The base NSString class is extended with new methods to find, extract and replace substrings directly on the instance string.

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