Fastest way to get array of NSRange objects for all uppercase letters in an NSString?

Posted by Bama91 on Stack Overflow See other posts from Stack Overflow or by Bama91
Published on 2011-01-11T01:06:04Z Indexed on 2011/01/11 5:53 UTC
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Filed under:

iphone

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objective-c

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nsstring

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nsrange

I need NSRange objects for the position of each uppercase letter in a given NSString for input into a method for a custom attributed string class.

There are of course quite a few ways to accomplish this such as rangeOfString:options: with NSRegularExpressionSearch or using RegexKitLite to get each match separately while walking the string.

What would be the fastest performing approach to accomplish this task?

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