붉은 돌고래~

  예를 들어, 문자열을 4자리씩 끊어야 할 경우,

    NSString *number = @"1234567890";

    NSError *error = NULL;

    NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@".{1,4}" options:0 error:&error];

    NSArray *matches = [regex matchesInString:number options:0 range:NSMakeRange(0, [number length])];

    for (NSTextCheckingResult *match in matches)

    {

        NSLog(@"%@", [number substringWithRange:match.range]];

    }

결과는

 1234

 5678

 90