Returns the NSRange of a given regular expression pattern

gistfile1.m

- (NSRange)rangeOfRegularExpressionPattern:(NSString *)pattern inString:(NSString *)string
{
    NSRegularExpression *expression = [NSRegularExpression regularExpressionWithPattern:pattern options:nil error:nil];
    NSTextCheckingResult *result = [expression firstMatchInString:string options:nil range:NSMakeRange(0, [string length])];
    
    return result.range;
}