I keep getting this error: "Implicit use of 'self' in closure; use 'self.' to make capture semantics explicit"

Question

I keep getting this error:

Implicit use of 'self' in closure; use 'self.' to make capture semantics explicit

even though I put the self in the code. Please correct me.

Here is my code:

@IBAction func doneButton(_ sender: Any) {
    let code = codeTextField.text
    if code == "TEST" || code == "Test" || code == "test" {
        var myAlert = UIAlertController(title:"Alert", message: "You are logging into The Test Zoo, right?", preferredStyle: UIAlertController.Style.alert)
        let yesAction = UIAlertAction(title: "Yes", style: UIAlertAction.Style.default) {
            UIAlertAction in
            performSegue(withIdentifier: "welcomeButton", sender:self)
        }

There is more, but the yesAction needs correction.

Answer 1

performSegue is a method, which you're implicitly calling on self; the explicit version would be self.performSegue(...).