an email validation field in swift

main.swift
func isValidEmail(_ email: String) -> Bool {
    // regex pattern for email validation
    let emailRegex = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,64}"
    let emailPredicate = NSPredicate(format: "SELF MATCHES %@", emailRegex)
    return emailPredicate.evaluate(with: email)
}

// Using the function in a UITextField
let emailTextField = UITextField()
emailTextField.keyboardType = .emailAddress

// Add a target to the text field, for example in viewDidLoad()
emailTextField.addTarget(self, action: #selector(emailChanged), for: .editingChanged)

// Implement the action function
@objc func emailChanged() {
    if isValidEmail(emailTextField.text ?? "") {
        // email is valid, do something
    } else {
        // email is not valid, show error message or disable button, etc.
    }
}
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