Photo Editor/AppDelegate.swift

/*
 Copyright (C) 2016 Apple Inc. All Rights Reserved.
 See LICENSE.txt for this sample’s licensing information
 
 Abstract:
 The skelaton application delegate implementation.
*/
 
import Cocoa
 
@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate {
 
    func applicationDidFinishLaunching(_ notification: Notification) {
        UserDefaults.standard.register(defaults: [ UserDefaults.useDarkModeKey.rawValue : false ])
    }
 
}