davidandreoletti · September 11, 2017 22:24 · Aug 26, 2016
diff --git a/GenericDelegate.swift b/GenericDelegate.swift
@@ -0,0 +1,43 @@
+
+public protocol DataSource: class {
+    associatedtype AbstractType
+    func source() -> AbstractType
+}
+
+class ViewController<T: DataSource>: UIViewController {
+
+    weak var dataSouce: T?
+    typealias AbstractType = T.AbstractType
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+
+        let source: AbstractType? = dataSouce?.source()
+        print("Source: ", source)
+    }
+}
+
+@UIApplicationMain
+class AppDelegate: UIResponder, UIApplicationDelegate, DataSource {
+
+    var vc: ViewController<AppDelegate>?
+    var window: UIWindow?
+
+    typealias AbstractType = Date
+
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
+        // Override point for customization after application launch.
+
+        vc = ViewController<AppDelegate>()
+        vc?.dataSouce = self
+        window = UIWindow(frame: UIScreen.main.bounds)
+        window?.rootViewController = vc
+        window?.makeKeyAndVisible()
+        return true
+    }
+
+    // MARK: - DataSource
+    func source() -> AbstractType {
+        return Date()
+    }
+}