Why is main window of type double optional?

Question

When accessing UIapplication\'s main window it is returned as a UIWindow??

let view = UIApplication.sharedApplication().delegate?.w         


        

Answer 1

With advent of Swift2 for me a usual workaround in this kind of cases is

if let _window = UIApplication.sharedApplication().delegate?.window, window = _window {
    // Some code... i.e.
    let frame = window.frame
}