minor

Author: mattneub

bk1ch03p069computedVariables/bk1ch03p069computedVariables/ViewController.swift

@@ -72,7 +72,7 @@ class ViewController: UIViewController {
         get {
             if _myBigData == nil {
                 let fm = FileManager.default
-                let f = URL(fileURLWithPath: NSTemporaryDirectory()).appendingPathComponent("myBigData")
+                let f = fm.temporaryDirectory.appendingPathComponent("myBigData")
                 if let d = try? Data(contentsOf:f) {
                     print("loaded big data from disk")
                     self._myBigData = d

bk2ch06p301customAnimation4/NavCustomPushTest/AppDelegate.swift

@@ -47,8 +47,8 @@ extension AppDelegate {
         case .ended:
             let anim = self.anim as! UIViewPropertyAnimator
             let ctx = self.context!
+            let vc2 = ctx.viewController(forKey:.to)!
             anim.addAnimations {
-                let vc2 = ctx.viewController(forKey:.to)!
                 v.frame = ctx.finalFrame(for: vc2)
             }
             let factor = 1 - anim.fractionComplete

bk2ch06p301customAnimation4/NavCustomPushTest/MasterViewController.swift

@@ -48,7 +48,7 @@ class MasterViewController : UITableViewController {
     }
 
     override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
-        print(self.tableView.indexPathForSelectedRow)
+        print(self.tableView.indexPathForSelectedRow as Any)
         if let dest = segue.destination as? DetailViewController {
             let cm = self.model[self.lastSelection.row]
             dest.detailItem = UIImage(named:cm.name)

bk2ch06p336memoryWarning/ch19p647memoryWarning/ViewController.swift

@@ -54,8 +54,7 @@ class ViewController : UIViewController {
         get {
             if _myBigData == nil {
                 let fm = FileManager.default
-                let f = URL(fileURLWithPath: NSTemporaryDirectory())
-                    .appendingPathComponent("myBigData")
+                let f = fm.temporaryDirectory.appendingPathComponent("myBigData")
                 if let d = try? Data(contentsOf:f) {
                     print("loaded big data from disk")
                     self._myBigData = d
@@ -91,7 +90,8 @@ class ViewController : UIViewController {
     func saveAndReleaseMyBigData() {
         if let myBigData = self.myBigData {
             print("unloading big data")
-            let f = URL(fileURLWithPath: NSTemporaryDirectory()).appendingPathComponent("myBigData")
+            let fm = FileManager.default
+            let f = fm.temporaryDirectory.appendingPathComponent("myBigData")
             try? myBigData.write(to:f)
             self.myBigData = nil
         }