Initializer for conditional binding must have Optional type, not '[String]' guard let when shuffled

Question

I got problem with shuffling sounds. When I got guard let sound = sounds.shuffled(), it gets me an error Initializer for conditional binding must have Optional type, not '[String]'

Any idea how to fix this? Is it because of guard let? Here is my code:

var audioPlayer: AVAudioPlayer!

@IBAction func playButtonPressed(_ sender: UIButton) {
        let sounds = ["x", "y", "z"].shuffled()

        guard let sound = sounds.shuffled(),
        let soundURL = Bundle.main.url(forResource: sound, withExtension: "mp3") else { return }


        do {
        audioPlayer = try AVAudioPlayer(contentsOf: soundURL)
        }
        catch {
            print(error)
        }
            audioPlayer.play()

Answer 1

I think you meant to use

guard let sound = sounds.first

which picks the first element out of the shuffled array (which can be nil if the array is empty).

Alternatively you can remove the shuffle and just use

guard let sound = ["x", "y", "z"].randomElement()