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iOS Build an Interactive Story App with Swift Creating the User Interface Programmatically Continuing Our Story

Amanda Augusto
Amanda Augusto
10,217 Points
Posted by Amanda Augusto
Amanda Augusto
10,217 Points

Unnecessary duplicated code

I understand that you need to provide 2 separated functions with no params for the choices button events. But instead of this:

func loadFirstChoice() {
    if let page = page, let firstChoice = page.firstChoice {
        let nextPage = firstChoice.page
        let nextPageController = PageController(page: nextPage)

        navigationController?.pushViewController(nextPageController, animated: true)
    }
}

func loadSecondChoice() {
    if let page = page, let secondChoice = page.secondChoice {
        let nextPage = secondChoice.page
        let nextPageController = PageController(page: nextPage)

        navigationController?.pushViewController(nextPageController, animated: true)
    }
}

Wouldn't be better to do something like this:

func loadFirstChoice() {
    guard let page = page else { return }
    goToPage(for: page.firstChoice)
}

func loadSecondChoice() {
    guard let page = page else { return }
    goToPage(for: page.secondChoice)
}

func goToPage(for choice: Page.Choice?) {
    guard let choice = choice else { return }

    let nextPage = choice.page
    let nextPageController = PageController(page: nextPage)

    navigationController?.pushViewController(nextPageController, animated: true)
}

There is no duplication on the code, and the 2 functions calls stays the same.