how to dismiss the keyboard in swift code example

Example 1: swift dismiss keyboard on return

extension UIViewController: UITextFieldDelegate{
    public func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        textField.resignFirstResponder()
        return true;
    }
}

override func viewDidLoad() {
    super.viewDidLoad()
    textField.delegate = self
}

Example 2: how to dismiss keyboard swiftui

#if canImport(UIKit)
extension View {
    func hideKeyboard() {
        UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil)
    }
}
#endif