From 1321c249da71063b0c291ae7cd9b0c765574c99d Mon Sep 17 00:00:00 2001
From: Matt Jackson <me@mattjackson.eu>
Date: Sat, 12 Sep 2015 16:04:34 +0100
Subject: [PATCH 1/5] swift code section not closed before objc section

---
 2013-12-02-nsnotification-and-nsnotificationcenter.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/2013-12-02-nsnotification-and-nsnotificationcenter.md b/2013-12-02-nsnotification-and-nsnotificationcenter.md
index eba87182..baceb91a 100644
--- a/2013-12-02-nsnotification-and-nsnotificationcenter.md
+++ b/2013-12-02-nsnotification-and-nsnotificationcenter.md
@@ -152,6 +152,7 @@ Something that often slips up developers is how similar the method signatures fo
 func addObserver(observer: NSObject, forKeyPath keyPath: String, 
     options: NSKeyValueObservingOptions, 
     context: UnsafeMutablePointer<Void>)
+~~~
 ~~~{objective-c}
 - (void)addObserver:(NSObject *)observer
          forKeyPath:(NSString *)keyPath

From 1ecfa2a0bde86dec5c8fd376a8483972b893763d Mon Sep 17 00:00:00 2001
From: Roman Roibu <romanroibu@users.noreply.github.com>
Date: Sat, 12 Sep 2015 19:55:22 +0300
Subject: [PATCH 2/5] Update iOS 7 article for Swift 2.0

---
 2013-09-23-ios7.md | 47 +++++++++++++++++++++++++---------------------
 1 file changed, 26 insertions(+), 21 deletions(-)

diff --git a/2013-09-23-ios7.md b/2013-09-23-ios7.md
index 96c77806..1d7e106a 100644
--- a/2013-09-23-ios7.md
+++ b/2013-09-23-ios7.md
@@ -4,8 +4,8 @@ author: Mattt Thompson
 category: ""
 excerpt: "With the NDA finally lifted, we can finally talk about all of the amazing new APIs in iOS 7."
 status:
-    swift: 1.1
-    reviewed: May 20, 2015
+    swift: 2.0
+    reviewed: Sep 12, 2015
 ---
 
 With the NDA finally lifted, we can finally talk about all of the amazing new APIs in iOS 7. And there are a _lot_ of them. "1500 new APIs", by Apple's count during the WWDC Keynote. (Granted, a good portion of that could just be all of the changes from `id` to `instancetype`, but that's a huge number, regardless).
@@ -25,9 +25,9 @@ But no longer! iOS 7 finally bakes-in Base64:
 ~~~{swift}
 let string = "Lorem ipsum dolor sit amet."
 if let data = string.dataUsingEncoding(NSUTF8StringEncoding) {
-    let base64EncodedString = data.base64EncodedStringWithOptions(NSDataBase64EncodingOptions.allZeros)
-    
-    println(base64EncodedString)    // TG9yZW0gaXBzdW0gZG9sYXIgc2l0IGFtZXQu
+    let base64EncodedString = data.base64EncodedStringWithOptions([])
+
+    print(base64EncodedString)    // TG9yZW0gaXBzdW0gZG9sYXIgc2l0IGFtZXQu
 }
 ~~~
 
@@ -49,8 +49,8 @@ if let components = NSURLComponents(string: "http://nshipster.com") {
     components.path = "/iOS7"
     components.query = "foo=bar"
     
-    println(components.scheme!)     // http
-    println(components.URL!)        // http://nshipster.com/iOS7?foo=bar
+    print(components.scheme!)     // http
+    print(components.URL!)        // http://nshipster.com/iOS7?foo=bar
 }
 ~~~
 
@@ -86,7 +86,7 @@ Anything with a notion of completed and total units is a candidate for `NSProgre
 let progress = NSProgress(totalUnitCount: 100)
 progress.completedUnitCount = 42;
 
-println(progress.localizedDescription) // 42% completed
+print(progress.localizedDescription) // 42% completed
 ~~~
 
 ~~~{objective-c}
@@ -133,8 +133,8 @@ Behold!
 ~~~{swift}
 let array = [1, 2, 3] as NSArray
 
-println("First Object: \(array.firstObject)")   // First Object: Optional(1)
-println("Last Object: \(array.lastObject)")     // Last Object: Optional(3)
+print("First Object: \(array.firstObject)")   // First Object: Optional(1)
+print("Last Object: \(array.lastObject)")     // Last Object: Optional(3)
 ~~~
 
 ~~~{objective-c}
@@ -161,8 +161,9 @@ let smileDetector = CIDetector(ofType: CIDetectorTypeFace, context: context,
     options: [CIDetectorTracking: true, CIDetectorAccuracy: CIDetectorAccuracyLow])
 
 var features = smileDetector.featuresInImage(ciImage, options: [CIDetectorSmile: true])
+
 if let feature = features.first as? CIFaceFeature where feature.hasSmile {
-    UIImageWriteToSavedPhotosAlbum(UIImage(CIImage: ciImage)!, self, "didFinishWritingImage", &features)
+    UIImageWriteToSavedPhotosAlbum(UIImage(CIImage: ciImage), self, "didFinishWritingImage", &features)
 } else {
     label.text = "Say Cheese!"
 }
@@ -194,11 +195,11 @@ let session = AVCaptureSession()
 let device = AVCaptureDevice.defaultDeviceWithMediaType(AVMediaTypeVideo)
 var error: NSError?
 
-let input = AVCaptureDeviceInput(device: device, error: &error)
-if let error = error {
-    println("Error: \(error)")
-} else {
+do {
+    let input = try AVCaptureDeviceInput(device: device)
     session.addInput(input)
+} catch let error {
+    print("Error: \(error)")
 }
 
 let output = AVCaptureMetadataOutput()
@@ -214,7 +215,7 @@ func captureOutput(
     captureOutput: AVCaptureOutput!,
     didOutputMetadataObjects metadataObjects: [AnyObject]!,
     fromConnection connection: AVCaptureConnection!) {
-    
+        
         var QRCode: String?
         for metadata in metadataObjects as! [AVMetadataObject] {
             if metadata.type == AVMetadataObjectTypeQRCode {
@@ -223,7 +224,7 @@ func captureOutput(
             }
         }
         
-        println("QRCode: \(QRCode)")
+        print("QRCode: \(QRCode)")
 }
 ~~~
 
@@ -290,9 +291,13 @@ Even though the number of people who have actually read something saved for late
 ~~~{swift}
 import SafariServices
 
-let url = NSURL(string: "http://nshipster.com/ios7")
-SSReadingList.defaultReadingList().addReadingListItemWithURL(url, title: "NSHipster",
-    previewText: "...", error: nil)
+let url = NSURL(string: "http://nshipster.com/ios7")!
+do {
+    try SSReadingList.defaultReadingList()?.addReadingListItemWithURL(url, title: "NSHipster",
+        previewText: "...")
+} catch let error {
+    print("Error: \(error)")
+}
 ~~~
 
 ~~~{objective-c}
@@ -345,7 +350,7 @@ let distance = portland.distanceFromLocation(sanFrancisco)
 
 let formatter = MKDistanceFormatter()
 formatter.units = .Imperial
-println(formatter.stringFromDistance(distance)) // 535 miles
+print(formatter.stringFromDistance(distance)) // 535 miles
 ~~~
 
 ~~~{objective-c}

From f87ecdb3b0a17ad2890ec75b9df7b16d57b36078 Mon Sep 17 00:00:00 2001
From: Roman Roibu <romanroibu@users.noreply.github.com>
Date: Sat, 12 Sep 2015 20:41:36 +0300
Subject: [PATCH 3/5] Update iOS 8 article for Swift 2.0

---
 2014-06-09-ios8.md | 90 +++++++++++++++++++++++-----------------------
 1 file changed, 46 insertions(+), 44 deletions(-)

diff --git a/2014-06-09-ios8.md b/2014-06-09-ios8.md
index 575d1284..74f80ab0 100644
--- a/2014-06-09-ios8.md
+++ b/2014-06-09-ios8.md
@@ -4,7 +4,8 @@ author: Mattt Thompson
 category: ""
 excerpt: "Ask anyone, and they'll tell you: WWDC 2014 was the one of the most exciting in recent memory. This week, we'll take a look beneath the headline features, and share some of the more obscure APIs that everyone should know about."
 status:
-    swift: 1.0
+    swift: 2.0
+    reviewed: Sep 12, 2015
 ---
 
 Ask anyone, and they'll tell you: WWDC 2014 was one of the most exciting in recent memory. It was, first and foremost, a developer event, with nary a hardware announcement to upstage the latest software & developer tools.
@@ -51,7 +52,7 @@ let energyFormatter = NSEnergyFormatter()
 energyFormatter.forFoodEnergyUse = true
 
 let joules = 10_000.0
-println(energyFormatter.stringFromJoules(joules)) // "2.39 Cal"
+print(energyFormatter.stringFromJoules(joules)) // "2.39 Cal"
 ~~~
 
 ### NSMassFormatter
@@ -61,7 +62,7 @@ Although the fundamental unit of physical existence, mass is pretty much relegat
 ~~~{swift}
 let massFormatter = NSMassFormatter()
 let kilograms = 60.0
-println(massFormatter.stringFromKilograms(kilograms)) // "132 lb"
+print(massFormatter.stringFromKilograms(kilograms)) // "132 lb"
 ~~~
 
 ### NSLengthFormatter
@@ -71,7 +72,7 @@ Rounding out the new `NSFormatter` subclasses is `NSLengthFormatter`. Think of i
 ~~~{swift}
 let lengthFormatter = NSLengthFormatter()
 let meters = 5_000.0
-println(lengthFormatter.stringFromMeters(meters)) // "3.107 mi"
+print(lengthFormatter.stringFromMeters(meters)) // "3.107 mi"
 ~~~
 
 ## CMPedometer
@@ -86,15 +87,16 @@ import CoreMotion
 let lengthFormatter = NSLengthFormatter()
 let pedometer = CMPedometer()
 pedometer.startPedometerUpdatesFromDate(NSDate(), withHandler: { data, error in
-    if !error {
-        println("Steps Taken: \(data.numberOfSteps)")
+    if let data = data {
+        print("Steps Taken: \(data.numberOfSteps)")
 
-        let distance = data.distance.doubleValue
-        println("Distance: \(lengthFormatter.stringFromMeters(distance))")
+        if let distance = data.distance?.doubleValue {
+            print("Distance: \(lengthFormatter.stringFromMeters(distance))")
 
-        let time = data.endDate.timeIntervalSinceDate(data.startDate)
-        let speed = distance / time
-        println("Speed: \(lengthFormatter.stringFromMeters(speed)) / s")
+            let time = data.endDate.timeIntervalSinceDate(data.startDate)
+            let speed = distance / time
+            print("Speed: \(lengthFormatter.stringFromMeters(speed)) / s")
+        }
     }
 })
 ~~~
@@ -109,8 +111,8 @@ import CoreMotion
 let altimeter = CMAltimeter()
 if CMAltimeter.isRelativeAltitudeAvailable() {
     altimeter.startRelativeAltitudeUpdatesToQueue(NSOperationQueue.mainQueue(), withHandler: { data, error in
-        if !error {
-            println("Relative Altitude: \(data.relativeAltitude)")
+        if let data = data {
+            print("Relative Altitude: \(data.relativeAltitude)")
         }
     })
 }
@@ -124,10 +126,9 @@ if CMAltimeter.isRelativeAltitudeAvailable() {
 import CoreLocation
 
 class LocationManagerDelegate: NSObject, CLLocationManagerDelegate {
-    func locationManager(manager: CLLocationManager!, didUpdateLocations locations: AnyObject[]!) {
-        let location: CLLocation? = locations[0] as? CLLocation
-        if let floor: CLFloor? = location?.floor {
-            println("Current Floor: \(floor?.level)")
+    func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
+        if let floor = locations.first?.floor {
+            print("Current Floor: \(floor.level)")
         }
     }
 }
@@ -148,28 +149,28 @@ The following example shows how statistics summed over the duration of the day c
 ~~~{swift}
 import HealthKit
 
-let collection: HKStatisticsCollection? = ...
-let statistics: HKStatistics? = collection!.statisticsForDate(NSDate())
-for item: AnyObject in statistics!.sources {
-    if let source = item as? HKSource {
-        if let quantity: HKQuantity = statistics!.sumQuantityForSource(source) {
-            if quantity.isCompatibleWithUnit(HKUnit.gramUnitWithMetricPrefix(.Kilo)) {
-                let massFormatter = NSMassFormatter()
-                let kilograms = quantity.doubleValueForUnit(HKUnit.gramUnitWithMetricPrefix(.Kilo))
-                println(massFormatter.stringFromKilograms(kilograms))
-            }
-
-            if quantity.isCompatibleWithUnit(HKUnit.meterUnit()) {
-                let lengthFormatter = NSLengthFormatter()
-                let meters = quantity.doubleValueForUnit(HKUnit.meterUnit())
-                println(lengthFormatter.stringFromMeters(meters))
-            }
-
-            if quantity.isCompatibleWithUnit(HKUnit.jouleUnit()) {
-                let energyFormatter = NSEnergyFormatter()
-                let joules = quantity.doubleValueForUnit(HKUnit.jouleUnit())
-                println(energyFormatter.stringFromJoules(joules))
-            }
+let collection: HKStatisticsCollection? = nil//...
+let statistics: HKStatistics? = collection?.statisticsForDate(NSDate())
+let sources: [HKSource] = statistics?.sources ?? []
+
+for source in sources {
+    if let quantity: HKQuantity = statistics?.sumQuantityForSource(source) {
+        if quantity.isCompatibleWithUnit(HKUnit.gramUnitWithMetricPrefix(.Kilo)) {
+            let massFormatter = NSMassFormatter()
+            let kilograms = quantity.doubleValueForUnit(HKUnit.gramUnitWithMetricPrefix(.Kilo))
+            print(massFormatter.stringFromKilograms(kilograms))
+        }
+        
+        if quantity.isCompatibleWithUnit(HKUnit.meterUnit()) {
+            let lengthFormatter = NSLengthFormatter()
+            let meters = quantity.doubleValueForUnit(HKUnit.meterUnit())
+            print(lengthFormatter.stringFromMeters(meters))
+        }
+        
+        if quantity.isCompatibleWithUnit(HKUnit.jouleUnit()) {
+            let energyFormatter = NSEnergyFormatter()
+            let joules = quantity.doubleValueForUnit(HKUnit.jouleUnit())
+            print(energyFormatter.stringFromJoules(joules))
         }
     }
 }
@@ -196,8 +197,8 @@ NSStream.getStreamsToHostWithName("nshipster.com",
 Also filed under: "small but solid fixes", is this convenience method for `NSString`:
 
 ~~~{swift}
-let string: NSString = "Café"
-let substring: NSString = "É"
+let string: String = "Café"
+let substring: String = "É"
 
 string.localizedCaseInsensitiveContainsString(substring) // true
 ~~~
@@ -245,12 +246,13 @@ The Foundation URL Loading System has remained relatively unchanged since last y
 import Foundation
 
 let session = NSURLSession()
-let task = session.dataTaskWithURL(NSURL(string: "http://nshipster.com"), completionHandler: { data, response, error in
+let task = session.dataTaskWithURL(NSURL(string: "http://nshipster.com")!, completionHandler: { data, response, error in
     // ...
 })
 
 let protectionSpace = NSURLProtectionSpace()
-NSURLCredentialStorage.getCredentialsForProtectionSpace(protectionSpace: protectionSpace, task: task, completionHandler: { credentials in
+let credentialStorage = NSURLCredentialStorage()
+credentialStorage.getCredentialsForProtectionSpace(protectionSpace, task: task, completionHandler: { credentials in
     // ...
 })
 ~~~
@@ -317,7 +319,7 @@ let configuration = WKWebViewConfiguration()
 configuration.preferences = preferences
 
 let webView = WKWebView(frame: self.view.bounds, configuration: configuration)
-let request = NSURLRequest(URL: NSURL(string: "http://nshipster.com"))
+let request = NSURLRequest(URL: NSURL(string: "http://nshipster.com")!)
 webView.loadRequest(request)
 ~~~
 

From c7f9e86f6bf99f1f409d8bd3e5b1bfeed8e07a26 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Robert=20W=C3=BCnsch?= <robert.wuensch@widescape.net>
Date: Mon, 14 Sep 2015 10:26:31 +0200
Subject: [PATCH 4/5] Fixed example for localization

Just translating words isn't enough. The resulting strings are still not correctly localized, but that's a problem with setLocalizedDateFormatFromTemplate itself.

Correct would be "23. Juni 2015, 16:56", but that would require changing the template from "yyyyMMMMddhhmm" to "yyyyMMMMddHHmm".
---
 2015-06-22-ios9.md | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/2015-06-22-ios9.md b/2015-06-22-ios9.md
index 8e143072..68e1975f 100644
--- a/2015-06-22-ios9.md
+++ b/2015-06-22-ios9.md
@@ -206,8 +206,12 @@ shortFormatter.stringFromDate(now)
 fullFormatter.locale = NSLocale(localeIdentifier: "de_DE")
 shortFormatter.locale = NSLocale(localeIdentifier: "de_DE")
 
+// set the date formats again, because other languages use different formats
+fullFormatter.setLocalizedDateFormatFromTemplate("yyyyMMMMddhhmm")
+shortFormatter.setLocalizedDateFormatFromTemplate("yyMMMM")
+
 fullFormatter.stringFromDate(now)
-// "Juni 23, 2015, 4:56 nachm."
+// "23. Juni 2015, 4:56 nachm."
 shortFormatter.stringFromDate(now)
 // "Juni 15"
 ```

From 9fb42ea70089014ee5ef4a2e808989043d6452b0 Mon Sep 17 00:00:00 2001
From: Nate Cook <natecook@gmail.com>
Date: Tue, 15 Sep 2015 00:18:23 -0500
Subject: [PATCH 5/5] Minor edits

---
 2013-08-19-nshashtable-and-nsmaptable.md | 19 ++++++--
 2013-09-23-ios7.md                       |  7 +--
 2014-06-09-ios8.md                       | 59 ++++++++++++++++++------
 2014-11-03-uisplitviewcontroller.md      | 14 ++----
 4 files changed, 65 insertions(+), 34 deletions(-)

diff --git a/2013-08-19-nshashtable-and-nsmaptable.md b/2013-08-19-nshashtable-and-nsmaptable.md
index 6aba6254..bfa338b7 100644
--- a/2013-08-19-nshashtable-and-nsmaptable.md
+++ b/2013-08-19-nshashtable-and-nsmaptable.md
@@ -35,9 +35,8 @@ hashTable.addObject("foo")
 hashTable.addObject("bar")
 hashTable.addObject(42)
 hashTable.removeObject("bar")
-print(hashTable.allObjects)
+print("Members: \(hashTable.allObjects)")
 ~~~
-
 ~~~{objective-c}
 NSHashTable *hashTable = [NSHashTable hashTableWithOptions:NSPointerFunctionsCopyIn];
 [hashTable addObject:@"foo"];
@@ -65,6 +64,8 @@ NSLog(@"Members: %@", [hashTable allObjects]);
 - `NSMapTable` can `copy` its values on input.
 - `NSMapTable` can contain arbitrary pointers, and use pointer identity for equality and hashing checks.
 
+> *Note:* `NSMapTable`'s focus on strong and weak references means that Swift's prevalent value types are a no go—reference types only, please.
+
 ### Usage
 
 Instances where one might use `NSMapTable` include non-copyable keys and storing weak references to keyed delegates or another kind of weak object.
@@ -72,10 +73,10 @@ Instances where one might use `NSMapTable` include non-copyable keys and storing
 ~~~{swift}
 let delegate: AnyObject = ...
 let mapTable = NSMapTable(keyOptions: .StrongMemory, valueOptions: .WeakMemory)
+
 mapTable.setObject(delegate, forKey: "foo")
 print("Keys: \(mapTable.keyEnumerator().allObjects)")
 ~~~
-
 ~~~{objective-c}
 id delegate = ...;
 NSMapTable *mapTable = [NSMapTable mapTableWithKeyOptions:NSMapTableStrongMemory
@@ -105,7 +106,11 @@ extension NSMapTable {
         }
 
         set {
-            setObject(newValue, forKey: key)
+            if newValue != nil {
+                setObject(newValue, forKey: key)
+            } else {
+                removeObjectForKey(key)
+            }
         }
     }
 }
@@ -121,7 +126,11 @@ extension NSMapTable {
 
 - (void)setObject:(id)obj forKeyedSubscript:(id)key
 {
-    [self setObject:obj forKey:key];
+    if (obj != nil) {
+        [self setObject:obj forKey:key];
+    } else {
+        [self removeObjectForKey:key];
+    }
 }
 
 @end
diff --git a/2013-09-23-ios7.md b/2013-09-23-ios7.md
index 1d7e106a..3c7244a0 100644
--- a/2013-09-23-ios7.md
+++ b/2013-09-23-ios7.md
@@ -292,12 +292,7 @@ Even though the number of people who have actually read something saved for late
 import SafariServices
 
 let url = NSURL(string: "http://nshipster.com/ios7")!
-do {
-    try SSReadingList.defaultReadingList()?.addReadingListItemWithURL(url, title: "NSHipster",
-        previewText: "...")
-} catch let error {
-    print("Error: \(error)")
-}
+try? SSReadingList.defaultReadingList()?.addReadingListItemWithURL(url, title: "NSHipster", previewText: "...")
 ~~~
 
 ~~~{objective-c}
diff --git a/2014-06-09-ios8.md b/2014-06-09-ios8.md
index 74f80ab0..1b670635 100644
--- a/2014-06-09-ios8.md
+++ b/2014-06-09-ios8.md
@@ -86,7 +86,7 @@ import CoreMotion
 
 let lengthFormatter = NSLengthFormatter()
 let pedometer = CMPedometer()
-pedometer.startPedometerUpdatesFromDate(NSDate(), withHandler: { data, error in
+pedometer.startPedometerUpdatesFromDate(NSDate()) { data, error in
     if let data = data {
         print("Steps Taken: \(data.numberOfSteps)")
 
@@ -98,7 +98,7 @@ pedometer.startPedometerUpdatesFromDate(NSDate(), withHandler: { data, error in
             print("Speed: \(lengthFormatter.stringFromMeters(speed)) / s")
         }
     }
-})
+}
 ~~~
 
 ## CMAltimeter
@@ -110,11 +110,11 @@ import CoreMotion
 
 let altimeter = CMAltimeter()
 if CMAltimeter.isRelativeAltitudeAvailable() {
-    altimeter.startRelativeAltitudeUpdatesToQueue(NSOperationQueue.mainQueue(), withHandler: { data, error in
+    altimeter.startRelativeAltitudeUpdatesToQueue(NSOperationQueue.mainQueue()) { data, error in
         if let data = data {
             print("Relative Altitude: \(data.relativeAltitude)")
         }
-    })
+    }
 }
 ~~~
 
@@ -149,12 +149,12 @@ The following example shows how statistics summed over the duration of the day c
 ~~~{swift}
 import HealthKit
 
-let collection: HKStatisticsCollection? = nil//...
+let collection: HKStatisticsCollection? = ...
 let statistics: HKStatistics? = collection?.statisticsForDate(NSDate())
 let sources: [HKSource] = statistics?.sources ?? []
 
 for source in sources {
-    if let quantity: HKQuantity = statistics?.sumQuantityForSource(source) {
+    if let quantity = statistics?.sumQuantityForSource(source) {
         if quantity.isCompatibleWithUnit(HKUnit.gramUnitWithMetricPrefix(.Kilo)) {
             let massFormatter = NSMassFormatter()
             let kilograms = quantity.doubleValueForUnit(HKUnit.gramUnitWithMetricPrefix(.Kilo))
@@ -194,11 +194,11 @@ NSStream.getStreamsToHostWithName("nshipster.com",
 
 ## NSString -localizedCaseInsensitiveContainsString
 
-Also filed under: "small but solid fixes", is this convenience method for `NSString`:
+Also filed under: "small but solid fixes", is this convenience method for `String`/`NSString`:
 
 ~~~{swift}
-let string: String = "Café"
-let substring: String = "É"
+let string = "Café"
+let substring = "É"
 
 string.localizedCaseInsensitiveContainsString(substring) // true
 ~~~
@@ -246,15 +246,15 @@ The Foundation URL Loading System has remained relatively unchanged since last y
 import Foundation
 
 let session = NSURLSession()
-let task = session.dataTaskWithURL(NSURL(string: "http://nshipster.com")!, completionHandler: { data, response, error in
+let task = session.dataTaskWithURL(NSURL(string: "http://nshipster.com")!) { data, response, error in
     // ...
-})
+}
 
 let protectionSpace = NSURLProtectionSpace()
 let credentialStorage = NSURLCredentialStorage()
-credentialStorage.getCredentialsForProtectionSpace(protectionSpace, task: task, completionHandler: { credentials in
+credentialStorage.getCredentialsForProtectionSpace(protectionSpace, task: task) { credentials in
     // ...
-})
+}
 ~~~
 
 ## kUTTypeToDoItem
@@ -275,6 +275,23 @@ Most users are completely unaware that most pictures taken with phones these day
 
 New to the Image I/O framework is a convenient new option for `CGImageDestination`: `kCGImageMetadataShouldExcludeGPS`, which does what you'd expect.
 
+~~~{swift}
+import UIKit
+import ImageIO
+import MobileCoreServices
+
+let image = ...
+let fileURL = NSURL(fileURLWithPath: "/path/to/output.jpg")
+let options: NSDictionary = [kCGImageDestinationLossyCompressionQuality as NSString: 0.75,
+                            kCGImageMetadataShouldExcludeGPS as NSString: true]
+
+if let imageDestination = CGImageDestinationCreateWithURL(fileURL, kUTTypeJPEG, 1, nil),
+    let cgImage = image.CGImage
+{
+    CGImageDestinationAddImage(imageDestination, cgImage, options)
+    CGImageDestinationFinalize(imageDestination)
+}
+~~~
 ~~~{objective-c}
 @import UIKit;
 @import ImageIO;
@@ -346,6 +363,22 @@ Imagine: with CloudKit and LocalAuthentication, nearly all of the friction to cr
 
 LocalAuthentication works in terms of an `LAContext` class, which evaluates a specified policy, and gives a thumbs up or thumbs down on user authentication. At no point is any biometric information made available to the application—everything is kept safe on the hardware itself.
 
+~~~{swift}
+let context = LAContext()
+var error: NSError?
+
+if context.canEvaluatePolicy(.DeviceOwnerAuthenticationWithBiometrics, error: &error) {
+    context.evaluatePolicy(.DeviceOwnerAuthenticationWithBiometrics, localizedReason: "...") { success, error in
+        if success {
+            // ...
+        } else {
+            print("Error: \(error)")
+        }
+    }
+} else {
+    print("Error: \(error)")
+}
+~~~
 ~~~{objective-c}
 LAContext *context = [[LAContext alloc] init];
 NSError *error = nil;
diff --git a/2014-11-03-uisplitviewcontroller.md b/2014-11-03-uisplitviewcontroller.md
index 2c4ef0a2..9d993a86 100644
--- a/2014-11-03-uisplitviewcontroller.md
+++ b/2014-11-03-uisplitviewcontroller.md
@@ -82,7 +82,6 @@ override func viewDidLoad() {
     navigationItem.leftItemsSupplementBackButton = true
 }
 ~~~
-
 ~~~{objective-c}
 - (void)viewDidLoad {
     [super viewDidLoad];
@@ -111,13 +110,9 @@ There is one more optimization we can do for the iPhone 6+ via [`UISplitViewCont
 When the user first launches the app, we can make the master view controller fully displayed until the user selects a list item:
 
 ~~~{swift}
-import UIKit
-
 class SelectColorTableViewController: UITableViewController, UISplitViewControllerDelegate {
     private var collapseDetailViewController = true
 
-    // MARK: UITableViewController
-
     override func viewDidLoad() {
         super.viewDidLoad()
 
@@ -126,7 +121,7 @@ class SelectColorTableViewController: UITableViewController, UISplitViewControll
 
     // ...
 
-    // MARK: UITableViewDelegate
+    // MARK: - UITableViewDelegate
 
     override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
         collapseDetailViewController = false
@@ -139,13 +134,14 @@ class SelectColorTableViewController: UITableViewController, UISplitViewControll
     }
 }
 ~~~
-
 ~~~{objective-c}
-@import UIKit;
+// SelectColorTableViewController.h
 
 @interface SelectColorTableViewController : UITableViewController <UISplitViewControllerDelegate>
 @end
 
+// SelectColorTableViewController.m
+
 @interface SelectColorTableViewController ()
 
 @property (nonatomic) BOOL shouldCollapseDetailViewController;
@@ -154,8 +150,6 @@ class SelectColorTableViewController: UITableViewController, UISplitViewControll
 
 @implementation SelectColorTableViewController
 
-#pragma mark - UITableViewController
-
 - (void)viewDidLoad {
     [super viewDidLoad];