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extracting numbers from NSString

Subject: extracting numbers from NSString
From: Koen van der Drift <email@hidden>
Date: Tue, 31 Jan 2006 16:02:08 -0500
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Hi,

I am trying to extract some numbers from an NSString and store them in an array (as an NSString, not as an NSNumber).

The original string has a format such as:

test (1.2.3 4.5.6)

The array should look like {123, 456}, so only numbers are left, without the periods.

I tried all kind of combinations of NSScanner and NSCharacterSets, but haven't been succesful yet. One of the attemps I tried is:

skipSet = [[NSCharacterSet lowercaseLetterCharacterSet] mutableCopy]; [skipSet formUnionWithCharacterSet: [NSCharacterSet punctuationCharacterSet]]; aScanner = [NSScanner scannerWithString: testString]; [ aScanner setCharactersToBeSkipped: skipSet]; // skip all letters and brackets while (![aScanner isAtEnd]) { if ([aScanner scanUpToCharactersFromSet: [NSCharacterSet whitespaceAndNewlineCharacterSet] intoString: &number]) { [temp addObject: number]; } } [skipSet release];

Anyone has a suggestion of a way to do this?


thanks,

- Koen.
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