Can someone please help me with using Regex with NSPredicate?
NSString *regex = @"(?:[A-Za-z0-9])";
NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
if ([pred evaluateWithObject:mystring])
{
//do something
}
testing the above wth mystring - qstring123 doesn't seem to work. I am expecting it to enter the if condition because it supposedly should match the regex.
Besides, I need a regex for alpha numberic allowing commas and spaces.
will this work?
@"(?:[A-Za-z0-9])*(?:,[A-sa-z0-9)*(?:\s[A-sa-s0-9])"
Please help.
From my experimentation, it tries to match the regex against the entire string, and won't match inside a string.
Therefore, the regex [a-zA-Z0-9]+
works, but [a-zA-Z0-9]
does not.
With that in mind, you may want to rework your comma-matching predicate, or use a more full-featured regex solution, like the amazingly awesome RegexKit and RegexKitLite.
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