Hello everyone! I just completed Project 8 challenge and I wanted to add something extra and experiment with closures again.

I noticed that the player has to manually clear the currentAnswer.text after a simple "Wrong answer" UIAlertAction is presented so I wanted to use its handler to do it automatically and save the user one step.

What I implemented worked but I'm still not sure if this is a strong reference cycle and if I should've used [weak self] or [unowned self] instead of _. My guess is that it's NOT a strong reference cycle because the UIAlertController doesn't hold a variable that changes other objects or methods in the view Controller (like the UITextField and submit method on Project 5 did) but it is only changing some attributes, am I on the right track?

Also, I wanted to call the clearTapped method but since is expecting a UIButton as sender instead of a UIAlertAction, I copied it. Is there any other way to perform this?

This is my code:

@objc func submitTapped(_ sender: UIButton) {
        guard let answerText = currentAnswer.text else { return }

        if let solutionPosition = solutions.firstIndex(of: answerText) {
            activatedButtons.removeAll()

            var splitAnswers = answersLabel.text?.components(separatedBy: "\n")
            //debugPrint(splitAnswers ?? "splitAnswers is empty")
            splitAnswers?[solutionPosition] = answerText
            answersLabel.text = splitAnswers?.joined(separator: "\n")
            //debugPrint(answersLabel.text ?? "answersLabel is empty")
            //debugPrint("Solutions array joined = \(solutions.joined(separator: "\n"))")

            currentAnswer.text = ""
            score += 1

        } else {
            let ac = UIAlertController(title: "ERROR", message: "That's not the right answer", preferredStyle: .alert)

            ac.addAction(UIAlertAction(title: "Try again", style: .default)
                { _ in
                    self.currentAnswer.text = ""

                    for button in self.activatedButtons {
                        button.isHidden = false
                    }

                    self.activatedButtons.removeAll()
                })

            present(ac, animated: true)
            score -= 1
        }

        if solutions.joined(separator: "\n") == answersLabel.text {
            let ac = UIAlertController(title: "Well done!", message: "Are you ready for the next level?", preferredStyle: .alert)
            ac.addAction(UIAlertAction(title: "Let's go", style: .default, handler: levelUp))
            present(ac, animated: true)
        }

    }

Thanks in advance for your insights, happy coding! KB