Hands-On Design Patterns with Swift

The controller layer

The main controller will be called GameController, because it manages everything about the current game.

It creates an instance of the QuestionController from the model layer, and an instance of a ViewController from the view layer:

class GameController {    private let questions = QuestionController()    private let view = ViewController()    private func waitForAnswer(question: Question) {        // Wait for user input        let result = readLine()        // Ask the model if answer is good        if question.isGoodAnswer(result: result) {            // Update the view            view.goodAnswer()        } else {            view.badAnswer()        }    }    func start() {        // From the model layer, get the next question        while let question = questions.next() {            // Display the question on screen            view.ask(question: ...