Swift 2.2

Author: guoye-zhang

Screen on Screen/AppDelegate.swift

@@ -59,8 +59,8 @@ class AppDelegate: NSObject, NSApplicationDelegate {
         Utility.updateDisplays()
         screenMenu.removeAllItems()
         let displayNo = Utility.displayNo
-        for (index, display) in Utility.displays.enumerate() {
-            let item = NSMenuItem(title: "\(index)", action: "display:", keyEquivalent: "")
+        for index in Utility.displays.indices {
+            let item = NSMenuItem(title: "\(index)", action: #selector(AppDelegate.display(_:)), keyEquivalent: "")
             item.tag = index
             if index == displayNo {
                 item.state = NSOnState

Screen on Screen/Utility.swift

@@ -54,7 +54,7 @@ struct Utility {
     private static let notificationCenter = NSNotificationCenter.defaultCenter()
 
     static func updateDisplays() {
-        let screens = NSScreen.screens() as? [NSScreen] ?? []
+        let screens = NSScreen.screens() ?? []
         displays = screens.map { ($0.deviceDescription["NSScreenNumber"] as! NSNumber).unsignedIntValue }
         if displays.count > 1 && displayNo == 0 {
             displayNo = 1