How to implement a regex for password validation in Swift?

Question

I want to implement a regex validaton for passwords in Swift? I have tried the following regex, but not successful

([(0-9)(A-Z)(!@#$%ˆ&*+-=<>)]+)([         


        

Answer 1

func validpassword(mypassword : String) -> Bool 
    {    

        let passwordreg =  ("(?=.*[A-Z])(?=.*[0-9])(?=.*[a-z])(?=.*[@#$%^&*]).{8,}")
        let passwordtesting = NSPredicate(format: "SELF MATCHES %@", passwordreg)
        return passwordtesting.evaluate(with: mypassword)       
    }

 @IBOutlet weak var password_textfield: UITextField! //create a Password text field IBOutlet

@IBAction func login_btton(_ sender: UIButton) { //Click & Call to Login Button


let password = validpassword(mypassword: password_textfield.text!) //get text Field data & checked through the function


        if(password == false)
        {
             print("Valid Password")  //Use to Alert Msg Box 
        }
        else
        {
             print("Login Safe")     //Use to Alert Msg Box 
        }
    }
## Function Use to validation is password and confirm password is same, Password must have more then some characters , Password contain some special character , Password must one digit , Password must one uppercase letter ##