By assigning property Passing data forward

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You can pass data directly by assigning the property of the next view controller before you push or present it.

class FirstViewController: UIViewController {

    func openSecondViewController() {

        // Here we initialize SecondViewController and set the id property to 492
        let secondViewController = SecondViewController() = 492

        // Once it was assign we now push or present the view controller
        present(secondViewController, animated: true, completion: nil)


class SecondViewController: UIViewController {
    var id: Int?

    override func viewDidLoad() {

        // Here we unwrapped the id and will get the data from the previous view controller.
        if let id = id {
            print("Id was set: \(id)")

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