ios-segues-tips-tricks-viewModel-unwrapped-optional.swift

class DestinationViewController: UIViewController {

    var viewModel: ViewModel!
	
    @IBOutlet var label: UILabel!

    override func viewDidLoad() {
        super.viewDidLoad()	
	
        // viewModel should be set by prepareForSegue. It it's not,
        // the app will crash and can be easily fixed.
        label.text = viewModel.text
    }
}