Email & Phone Validation in Swift

Question

i am using the following code for phone number validation. But i am getting the following error. I cant able to proceed further. Help us to take it forward.

Answer 1

another solution for variety sake..

public extension String {
    public var validPhoneNumber:Bool {
        let types:NSTextCheckingType = [.PhoneNumber]
        guard let detector = try? NSDataDetector(types: types.rawValue) else { return false }

        if let match = detector.matchesInString(self, options: [], range: NSMakeRange(0, characters.count)).first?.phoneNumber {
            return match == self
        }else{
            return false
        }
    }
}

//and use like so:
if "16465551212".validPhoneNumber {
    print("valid phone number")
}