(Swift) Function to parse string (from-to)

Question

Is any other ways to parse string \"from-to\"? I mean when there is a value we need and we know about string before and after it. I`ve just created such functi

Answer 1

You could do something like this using substringWithRange:

func substringBetween(start: String, and end: String) -> String? {
    if let startIndex = rangeOfString(start, options: .LiteralSearch, range: nil, locale: nil)?.endIndex,
           endIndex = rangeOfString(end, options: .LiteralSearch, range: startIndex..<self.endIndex, locale: nil)?.startIndex {
        return substringWithRange(startIndex..<endIndex)
    } else {
        return nil
    }
}