Updated project for Swift 4.2.

.gitignore

@@ -0,0 +1,3 @@
+.DS_Store
+xcuserdata
+

ToDoList.xcodeproj/project.pbxproj

@@ -181,6 +181,7 @@
 				TargetAttributes = {
 					954D24811B7A2DDA00DD9E4E = {
 						CreatedOnToolsVersion = 6.4;
+						DevelopmentTeam = TXV64D6H4A;
 					};
 					954D24961B7A2DDA00DD9E4E = {
 						CreatedOnToolsVersion = 6.4;
@@ -367,21 +368,25 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				DEVELOPMENT_TEAM = TXV64D6H4A;
 				INFOPLIST_FILE = ToDoList/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "com.purecreek.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
 		954D24A31B7A2DDB00DD9E4E /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				DEVELOPMENT_TEAM = TXV64D6H4A;
 				INFOPLIST_FILE = ToDoList/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "com.purecreek.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};

ToDoList.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

ToDoList/AddToDoItemViewController.swift

@@ -14,16 +14,16 @@ class AddToDoItemViewController: UIViewController {
 	@IBOutlet weak var nameTextField: UITextField!
 
 	var stateController: StateController?
-	
-	override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
-		guard let tappedButton = sender as? UIBarButtonItem where tappedButton != cancelButton else {
-			return;
-		}
-		guard let text = nameTextField.text else {
-			return
-		}
-		let todoItem = ToDoItem(name: text, completed: false, creationDate: NSDate())
-		stateController?.addItem(todoItem)
-	}
-	
+    
+    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
+        guard let tappedButton = sender as? UIBarButtonItem, tappedButton != cancelButton else {
+            return;
+        }
+        guard let text = nameTextField.text else {
+            return
+        }
+        let todoItem = ToDoItem(name: text, completed: false, creationDate: NSDate())
+        stateController?.addItem(item: todoItem)
+    }
+    
 }

ToDoList/AppDelegate.swift

@@ -14,19 +14,21 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 	var window: UIWindow?
 	let stateController = StateController()
 
-	func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
-		if let navigationController = window?.rootViewController as? UINavigationController,
-			let toDoListTableViewController = navigationController.viewControllers.first as? ToDoListTableViewController {
-			toDoListTableViewController.stateController = stateController
-		}
-		return true
-	}
+    func application(_ application: UIApplication,
+                     didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool
+    {
+        if let navigationController = window?.rootViewController as? UINavigationController,
+            let toDoListTableViewController = navigationController.viewControllers.first as? ToDoListTableViewController {
+            toDoListTableViewController.stateController = stateController
+        }
+        return true
+    }
 
-	func applicationWillTerminate(application: UIApplication) {
+    func applicationWillTerminate(_ application: UIApplication) {
 		stateController.save()
 	}
 
-	func applicationWillResignActive(application: UIApplication) {
+    func applicationWillResignActive(_ application: UIApplication) {
 		stateController.save()
 	}
 }

ToDoList/Base.lproj/Main.storyboard

@@ -1,16 +1,20 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="7706" systemVersion="14E46" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="GwT-36-HoN">
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14460.31" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="GwT-36-HoN">
+    <device id="retina4_7" orientation="portrait">
+        <adaptation id="fullscreen"/>
+    </device>
     <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="7703"/>
-        <capability name="Constraints to layout margins" minToolsVersion="6.0"/>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14460.20"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <scenes>
         <!--Navigation Controller-->
         <scene sceneID="ehg-Ox-owk">
             <objects>
                 <navigationController id="GwT-36-HoN" sceneMemberID="viewController">
                     <navigationBar key="navigationBar" contentMode="scaleToFill" id="UUg-LA-X9P">
-                        <rect key="frame" x="0.0" y="0.0" width="320" height="44"/>
+                        <rect key="frame" x="0.0" y="20" width="375" height="44"/>
                         <autoresizingMask key="autoresizingMask"/>
                     </navigationBar>
                     <connections>
@@ -26,16 +30,19 @@
             <objects>
                 <tableViewController id="D54-iA-aJQ" customClass="ToDoListTableViewController" customModule="ToDoList" customModuleProvider="target" sceneMemberID="viewController">
                     <tableView key="view" clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="plain" separatorStyle="default" rowHeight="44" sectionHeaderHeight="22" sectionFooterHeight="22" id="Vzs-6T-8dB">
-                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                         <prototypes>
                             <tableViewCell contentMode="scaleToFill" selectionStyle="default" indentationWidth="10" reuseIdentifier="ToDoItemCell" textLabel="8dI-yn-INn" style="IBUITableViewCellStyleDefault" id="zAc-qw-Uu3" customClass="ToDoItemCell" customModule="ToDoList" customModuleProvider="target">
+                                <rect key="frame" x="0.0" y="22" width="375" height="44"/>
                                 <autoresizingMask key="autoresizingMask"/>
                                 <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" tableViewCell="zAc-qw-Uu3" id="639-JW-Vak">
+                                    <rect key="frame" x="0.0" y="0.0" width="375" height="43.5"/>
                                     <autoresizingMask key="autoresizingMask"/>
                                     <subviews>
                                         <label opaque="NO" multipleTouchEnabled="YES" contentMode="left" text="Title" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="8dI-yn-INn">
+                                            <rect key="frame" x="16" y="0.0" width="343" height="43.5"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
                                             <fontDescription key="fontDescription" type="system" pointSize="16"/>
                                             <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
@@ -71,16 +78,16 @@
                         <viewControllerLayoutGuide type="bottom" id="iBz-8H-3ry"/>
                     </layoutGuides>
                     <view key="view" contentMode="scaleToFill" id="DbP-1W-30d">
-                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <subviews>
-                            <textField opaque="NO" clipsSubviews="YES" contentMode="scaleToFill" contentHorizontalAlignment="left" contentVerticalAlignment="center" borderStyle="roundedRect" placeholder="New to-do item" minimumFontSize="17" translatesAutoresizingMaskIntoConstraints="NO" id="Ptn-l6-Jhc">
+                            <textField opaque="NO" clipsSubviews="YES" contentMode="scaleToFill" misplaced="YES" contentHorizontalAlignment="left" contentVerticalAlignment="center" borderStyle="roundedRect" placeholder="New to-do item" minimumFontSize="17" translatesAutoresizingMaskIntoConstraints="NO" id="Ptn-l6-Jhc">
                                 <rect key="frame" x="16" y="72" width="568" height="30"/>
                                 <fontDescription key="fontDescription" type="system" pointSize="14"/>
                                 <textInputTraits key="textInputTraits"/>
                             </textField>
                         </subviews>
-                        <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                         <constraints>
                             <constraint firstItem="Ptn-l6-Jhc" firstAttribute="top" secondItem="cRc-Ry-ng6" secondAttribute="bottom" constant="8" id="DD7-I3-Twd"/>
                             <constraint firstItem="Ptn-l6-Jhc" firstAttribute="trailing" secondItem="DbP-1W-30d" secondAttribute="trailingMargin" id="VeJ-9p-CTJ"/>
@@ -90,12 +97,12 @@
                     <navigationItem key="navigationItem" title="Add To-Do Item" id="IJY-dD-pe1">
                         <barButtonItem key="leftBarButtonItem" systemItem="cancel" id="8fr-LN-Fea">
                             <connections>
-                                <segue destination="BND-B3-xGa" kind="unwind" unwindAction="unwindToList:" id="kH7-Pt-wR9"/>
+                                <segue destination="BND-B3-xGa" kind="unwind" unwindAction="unwindToListWithSegue:" id="O7o-FD-skB"/>
                             </connections>
                         </barButtonItem>
                         <barButtonItem key="rightBarButtonItem" systemItem="save" id="wwo-dz-Wu8">
                             <connections>
-                                <segue destination="BND-B3-xGa" kind="unwind" unwindAction="unwindToList:" id="jH7-G6-jcI"/>
+                                <segue destination="BND-B3-xGa" kind="unwind" unwindAction="unwindToListWithSegue:" id="TGP-Ng-J4U"/>
                             </connections>
                         </barButtonItem>
                     </navigationItem>
@@ -116,7 +123,7 @@
                 <navigationController automaticallyAdjustsScrollViewInsets="NO" id="qjo-ed-Xkd" sceneMemberID="viewController">
                     <toolbarItems/>
                     <navigationBar key="navigationBar" contentMode="scaleToFill" id="xB7-KY-yGN">
-                        <rect key="frame" x="0.0" y="0.0" width="320" height="44"/>
+                        <rect key="frame" x="0.0" y="20" width="375" height="44"/>
                         <autoresizingMask key="autoresizingMask"/>
                     </navigationBar>
                     <nil name="viewControllers"/>

ToDoList/StateController.swift

@@ -9,10 +9,10 @@
 import Foundation
 
 class StateController {
-	static let itemsFilePath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).first! + "/items.txt"
+    static let itemsFilePath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first! + "/items.txt"
 
 	private(set) var items: [ToDoItem] = {
-		if let items = NSKeyedUnarchiver.unarchiveObjectWithFile(itemsFilePath) as? [ToDoItem] {
+        if let items = NSKeyedUnarchiver.unarchiveObject(withFile: itemsFilePath) as? [ToDoItem] {
 			return items
 		} else {
 			return [ToDoItem]()
@@ -26,4 +26,4 @@ class StateController {
 	func save() {
 		NSKeyedArchiver.archiveRootObject(self.items, toFile: StateController.itemsFilePath)
 	}
-}
+}

ToDoList/TableViewDataSource.swift

@@ -20,16 +20,16 @@ class TableViewDataSource: NSObject {
 
 extension TableViewDataSource: UITableViewDataSource {
 
-	func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
 		return stateController.items.count
 	}
 
-	func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
+    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
 		let toDoItem = stateController.items[indexPath.row]
-		let cell = tableView.dequeueReusableCellWithIdentifier(ToDoItemCell.identifier, forIndexPath: indexPath) as! ToDoItemCell
+        let cell = tableView.dequeueReusableCell(withIdentifier: ToDoItemCell.identifier, for: indexPath) as! ToDoItemCell
 		cell.name = toDoItem.name
 		cell.completed = toDoItem.completed
 		return cell
 	}
 
-}
+}

ToDoList/TableViewDelegate.swift

@@ -20,11 +20,11 @@ class TableViewDelegate: NSObject {
 
 extension TableViewDelegate: UITableViewDelegate {
 
-	func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
-		tableView.deselectRowAtIndexPath(indexPath, animated: false)
+    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
+        tableView.deselectRow(at: indexPath, animated: false)
 		let tappedItem = stateController.items[indexPath.row]
 		tappedItem.completed = !tappedItem.completed
-		tableView.reloadRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.None)
+        tableView.reloadRows(at: [indexPath], with: UITableView.RowAnimation.none)
 	}
 
-}
+}

ToDoList/ToDoItem.swift

@@ -9,7 +9,8 @@
 import Foundation
 
 class ToDoItem: NSObject, NSCoding {
-	let name: String
+
+    let name: String
 	let creationDate: NSDate
 	var completed: Bool
 
@@ -20,15 +21,15 @@ class ToDoItem: NSObject, NSCoding {
 	}
 
 	required init?(coder aDecoder: NSCoder) {
-		name = aDecoder.decodeObjectForKey(Keys.Name.rawValue) as! String
-		completed = aDecoder.decodeObjectForKey(Keys.Completed.rawValue) as! Bool
-		creationDate = aDecoder.decodeObjectForKey(Keys.CreationDate.rawValue) as! NSDate
+        name = aDecoder.decodeObject(forKey: Keys.Name.rawValue) as! String
+        completed = aDecoder.decodeObject(forKey: Keys.Completed.rawValue) as! Bool
+        creationDate = aDecoder.decodeObject(forKey: Keys.CreationDate.rawValue) as! NSDate
 	}
 
-	func encodeWithCoder(aCoder: NSCoder) {
-		aCoder.encodeObject(name, forKey: Keys.Name.rawValue)
-		aCoder.encodeObject(completed, forKey: Keys.Completed.rawValue)
-		aCoder.encodeObject(creationDate, forKey: Keys.CreationDate.rawValue)
+	func encode(with aCoder: NSCoder) {
+        aCoder.encode(name, forKey: Keys.Name.rawValue)
+        aCoder.encode(completed, forKey: Keys.Completed.rawValue)
+        aCoder.encode(creationDate, forKey: Keys.CreationDate.rawValue)
 	}
 
 	enum Keys: String {

ToDoList/ToDoItemCell.swift

@@ -20,9 +20,9 @@ class ToDoItemCell: UITableViewCell {
 	var completed: Bool = false {
 		didSet {
 			if (completed) {
-				accessoryType = UITableViewCellAccessoryType.Checkmark
+                accessoryType = UITableViewCell.AccessoryType.checkmark
 			} else {
-				accessoryType = UITableViewCellAccessoryType.None;
+                accessoryType = UITableViewCell.AccessoryType.none;
 			}
 		}
 	}

ToDoList/ToDoListTableViewController.swift

@@ -22,21 +22,21 @@ class ToDoListTableViewController: UITableViewController {
 		}
 	}
 
-	override func viewWillAppear(animated: Bool) {
+    override func viewWillAppear(_ animated: Bool) {
 		super.viewWillAppear(animated)
 		tableView.reloadData()
 	}
 
-	override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
-		if let navigationController = segue.destinationViewController as? UINavigationController,
+    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
+        if let navigationController = segue.destination as? UINavigationController,
 			let addToDoItemViewController = navigationController.viewControllers.first as? AddToDoItemViewController {
 			addToDoItemViewController.stateController = stateController
 		}
 	}
 
-	@IBAction func unwindToList(segue: UIStoryboardSegue) {
-		
-	}
+    @IBAction func unwindToList(segue: UIStoryboardSegue) {
+        print("unwindToList")
+    }
 
 }