nsregularexpression

I have this regex working when I test it in PHP but it doesn't work in Objective C: (?:www\.)?((?!-)[a-zA-Z0-9-]{2,63}(?<!-))\.?((?:[a-zA-Z0-9]{2,})?(?:\.[a-zA-Z0-9]{2,})?) I tried escaping the escape characters but that doesn't help either. Should I escape any other character? This is my code in Objective C: NSMutableString *searchedString = [NSMutableString stringWithString:@"domain-name.tld.tld2"]; NSError* error = nil; NSRegularExpression* regex = [NSRegularExpression regularExpressionWithPattern:@"(?:www\\.)?((?!-)[a-zA-Z0-9-]{2,63}(?<!-))\\.?((?:[a-zA-Z0-9]{2,})?(?:\\.[a-zA-Z0-9]{2,})?)"

I'm using the following code on my iPhone app, taken from here to extract all URLs from striped .html code. I'm only being able to extract the first URL, but I need an array containing all URLs. My NSArray isn't returning NSStrings for each URL, but the objects descriptions only. How do I make my arrayOfAllMatches return all URLs, as NSStrings? -(NSArray *)stripOutHttp:(NSString *)httpLine { // Setup an NSError object to catch any failures NSError *error = NULL; // create the NSRegularExpression object and initialize it with a pattern // the pattern will match any http or https url, with

I need to capture multiple groups of the same pattern. Suppose, I have a following string: HELLO,THERE,WORLD And I've written a following pattern ^(?:([A-Z]+),?)+$ What I want it to do is, capture every single word, so that Group 1 is : "HELLO", Group 2 is "THERE" and Group 3 is "WORLD" What my regex is actually capturing only the last one, which is "WORLD". I'm testing my regular expression here and I want to use it with Swift (maybe there's a way in Swift to get intermediate results somehow, so that I can use them?) UPDATE: I don't want to use split . I just need to now how to capture all