string.swift

gistfile1.txt

extension String{
    
    var length: Int{
        get{
            return self.utf16Count
        }
    }
    
    func isValidEmail() -> Bool {
        let emailRegex = NSRegularExpression(pattern: "^[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,4}$", options: .CaseInsensitive, error: nil)
        return emailRegex?.firstMatchInString(self, options: nil, range: NSMakeRange(0, countElements(self))) != nil
    }
    
}