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aug2uag/gist:8464566

Last active January 3, 2016 12:39
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NSString is all digits
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gistfile1.m
- (BOOL)isAllDigits:(NSString *)input
{
NSCharacterSet* nonNumbers = [[NSCharacterSet decimalDigitCharacterSet] invertedSet];
NSRange r = [input rangeOfCharacterFromSet: nonNumbers];
return r.location == NSNotFound;
}
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