Extract links from string optimization

Question

I get data (HTML string) from website. I want to extract all links. I write function (it works), but it is so slow...

Can you help me to optimize it? What standard

Answer 1

And that is the answer for Swift 5.0

let text = "http://www.google.com. http://www.bla.com"

func checkForUrls(text: String) -> [URL] {
    let types: NSTextCheckingResult.CheckingType = .link

    do {
        let detector = try NSDataDetector(types: types.rawValue)

        let matches = detector.matches(in: text, options: .reportCompletion, range: NSMakeRange(0, text.count))
    
        return matches.compactMap({$0.url})
    } catch let error {
        debugPrint(error.localizedDescription)
    }

    return []
}

checkForUrls(text: text)