//

 //  ViewController.swift

 //  Test4SwiftyUserDefaults

 // //  Copyright © 2017年. All rights reserved.

 //

 import UIKit

 class ViewController: UIViewController {

   override func viewDidLoad() {

     super.viewDidLoad()

       Defaults[.userID] = "lilei";

     Defaults[.age] =

     Defaults[.age] +=

      print(Defaults[.userID])

     print(Defaults[.age])

   }

 }

 extension DefaultsKeys{

   static let userID = DefaultsKey<String>("userID")

   static let age = DefaultsKey<Int>("age")

 }