ios - 使用正则表达式的 Xcode/swift 密码验证

Question

我刚刚听说这个正则表达式，正在努力让它发挥作用。

我的代码:

func isPasswordValid(_ Password : String) -> Bool{
    let Password = NSPredicate(format: "SELF MATCHES %@", "^(?=.*[A-Z](?=.*[0-9].{>8}$")
    return Password.evaluate(with: Password)
}

@IBAction func Register(_ sender: UIButton) {
    if Username.text == "" {
        Error.text = "Email må ikke være tom";
    }
    if Username.text != "" {
        Error.text = ""
    }
    if Password.text == "" {
        Error2.text = "Password må ikke være tom"
    }
    if Password.text != "" {
        Error2.text = ""
    }
    if Password.text != repeatPassword.text || repeatPassword.text == "" {
        Error3.text = "Password skal være det samme"
    }
    if Password.text == repeatPassword.text && repeatPassword.text != "" {
        Error3.text = ""
    }
    if Password.text! == repeatPassword.text && Username.text != "" {
        Auth.auth().createUser(withEmail: Username.text!, password: Password.text!) { (User, Error) in
            self.performSegue(withIdentifier: "goToSignIn", sender: self)
        }
    }

}

当我运行它时，它会在返回状态下创建一个断点。我想我需要什么？ 谁能帮忙？

Answer 1

func isPasswordValid(_ Password : String) -> Bool{
    let Password = NSPredicate(format: "SELF MATCHES %@", "^(?=.*[A-Z](?=.*[0-9].{>8}$")
    return Password.evaluate(with: Password)
}

我怀疑你的函数参数与谓词变量名冲突，试试这个:

func isPasswordValid(_ password : String) -> Bool{
    let predicate = NSPredicate(format: "SELF MATCHES %@", "^(?=.*[A-Z](?=.*[0-9].{>8}$")
    return predicate.evaluate(with: password)
}

@IBAction func Register(_ sender: UIButton) {

    let username = self.username.text.flatMap { $0.isEmpty ? nil : $0 }
    let password = self.password.text.flatMap { $0.isEmpty ? nil : $0 }
    let repeat = self.repeatPassword.text.flatMap { $0 == password }

    error.text = username == nil ? "Email må ikke være tom" : ""
    error2.text = password == nil ? "Password må ikke være tom" : ""
    error3.text = repeatPassword == nil ? "Password skal være det samme" : ""

    guard username != nil, repeat != nil else { return }

    Auth.auth().createUser(withEmail: username!, password: password!) { (user, error) in
        self.performSegue(withIdentifier: "goToSignIn", sender: self)
    }
}