toast in swift for debugging

toast.swift

extension UIViewController {

    public func showToast(message : String, seconds: Double = 1.0) {
        let toast = UIAlertController(title: nil, message: message, preferredStyle: .alert)
        toast.view.alpha = 0.5
        present(toast, animated: true)
        DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + seconds) {
            toast.dismiss(animated: true)
        }
    }
 }