use delay to run away from UserDefaults' bug

userDefaultsDelayByGCD.swift

class TableViewController: NSViewController, NSTableViewDelegate {
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do view setup here.
        run()
        DispatchQueue.main.asyncAfter(wallDeadline: .now() + .milliseconds(100)) { [unowned self] () -> () in
            NotificationCenter.default.post(name: TableViewControllerDidAppear, object: self)
        }
    }
    
    func run() {
        // do things
    }
}