Article Status

The common swift (Apus apus) can travel at speeds over 100km/h. The Swift programming language, true to its name and namesake, is similarly fast-moving, frequently introducing new language features and syntax rules. As a result, some of our articles may become incorrect or outdated over time.

We do our best to keep things fresh, with new updates to existing articles made every week, and invite you to help us find and correct any mistakes you find by opening a new issue on our GitHub repository.

In the meantime, please consult the table below for guidance on when each of our articles was last updated, and which version of Swift it’s targeting:

"t.b.c." indicates that an article has not yet been translated to Swift
"n/a" notes that a Swift translation would not be useful or appropriate.
Article Swift Version Last Review
#pragma n/a October 1st, 2012
@ n/a October 8th, 2012
AFNetworking 2.0 n/a September 16th, 2013
AVSpeech​Synthesizer 4.2 August 8th, 2018
Address​Book​UI 1.1 October 15th, 2012
Alamofire 1.1 August 4th, 2014
Associated Objects n/a February 10th, 2014
BOOL / bool / Boolean / NSCFBoolean n/a April 8th, 2013
Back Row n/a March 4th, 2013
Benchmarking t.b.c. May 19th, 2014
Bug Reporting n/a July 16th, 2018
C Storage Classes n/a March 18th, 2013
CFBag t.b.c August 27th, 2012
CFString​Transform 1.2 August 6th, 2012
CGGeometry 2.0 September 8th, 2015
CMDevice​Motion 4.2 September 12th, 2018
CMMotion​Activity 4.2 September 10th, 2018
Clang Diagnostics n/a June 16th, 2014
Cloud​Kit 2.0 June 29th, 2015
Cocoa​Pods n/a May 26th, 2014
Configuration Profiles n/a April 7th, 2014
Core Data Libraries & Utilities n/a August 12th, 2015
Core Location in i​OS 8 1.2 June 24th, 2015
Custom​Playground​Display​Convertible 4.2 November 12th, 2018
Date​Components 4.2 October 10th, 2018
Documentation n/a August 5th, 2013
Empathy n/a March 17th, 2014
Equality n/a August 26th, 2013
Extended File Attributes t.b.c. January 20th, 2014
File​Manager 4.2 October 29th, 2018
GPUImage n/a May 6th, 2013
Hashable / Hasher 4.2 August 13th, 2018
IBAction / IBOutlet / IBOutlet​Collection t.b.c. May 5th, 2014
IBInspectable / IBDesignable 1.0 February 2nd, 2015
Image Resizing Techniques 2.0 September 30th, 2015
Inter-Process Communication t.b.c. October 17th, 2014
Java​Script​Core 2.0 November 9th, 2015
KVC Collection Operators t.b.c. August 12th, 2015
Key-Value Observing t.b.c. October 7th, 2013
Language Server Protocol n/a November 5th, 2018
Launch Arguments &
Environment Variables
n/a October 21st, 2013
Long Live Cocoa 1.0 January 12th, 2015
MKGeodesic​Polyline 2.0 November 12th, 2015
MKLocal​Search 2.0 November 12th, 2015
MKTile​Overlay,
MKMap​Snapshotter &
MKDirections
2.0 November 12th, 2015
Method Swizzling n/a January 28th, 2015
Mirror / Custom​Reflectable / Custom​Leaf​Reflectable 4.2 November 14th, 2018
Multipeer Connectivity t.b.c. December 9th, 2013
NLLanguage​Recognizer 4.2 August 6th, 2018
NSAssertion​Handler n/a February 25th, 2013
NSCache 2.2 April 10th, 2016
NSCalendar Additions 1.2 March 16th, 2015
NSCalendar​Unit​Year 2.0 September 9th, 2015
NSCharacter​Set 2.0 September 9th, 2015
NSCoding / NSKeyed​Archiver 2.0 September 15th, 2015
NSData​Asset 4.2 August 26th, 2018
NSData​Detector 4.2 August 29th, 2018
NSError n/a October 14th, 2013
NSExpression 2.0 September 8th, 2015
NSFast​Enumeration / NSEnumerator n/a July 1st, 2013
NSFormatter 2.0 September 8th, 2015
NSHash​Table & NSMap​Table 2.0 September 11th, 2015
NSHipster Quiz #1 n/a April 22nd, 2013
NSHipster Quiz #2 n/a June 12th, 2013
NSHipster Quiz #3 n/a July 31st, 2013
NSHipster Quiz #4 n/a October 28th, 2013
NSHipster Quiz #5 n/a May 12th, 2014
NSHipster Quiz #6 n/a June 3rd, 2014
NSHipster Quiz #7 n/a June 9th, 2015
NSHipster Quiz #8 n/a June 14th, 2016
NSIncremental​Store 1.1 September 8th, 2015
NSIndex​Set 2.0 September 8th, 2015
NSLinguistic​Tagger 2.0 September 8th, 2015
NSLocale 1.1 September 3rd, 2012
NSLocalized​String t.b.c. January 21st, 2013
NSNotification &
NSNotification​Center
2.0 September 8th, 2015
NSOperation 2.0 September 15th, 2015
NSOrdered​Set 2.0 September 15th, 2015
NSPredicate 2.0 September 19th, 2015
NSRange n/a January 13th, 2014
NSRegular​Expression 3.0 December 13th, 2016
NSScanner 1.2 March 2nd, 2015
NSSecure​Coding 1.1 April 15th, 2013
NSSort​Descriptor 1.1 July 24th, 2012
NSURL /
NSURLComponents
2.0 September 9th, 2015
NSURLCache 1.1 February 11th, 2013
NSURLProtocol n/a November 5th, 2012
NSUUID /
CFUUIDRef /
UIDevice -unique​Identifier /
-identifier​For​Vendor
1.1 June 24th, 2013
NSUndo​Manager 1.0 December 15th, 2014
NSValue t.b.c. January 28th, 2013
NS_ENUM & NS_OPTIONS n/a November 19th, 2012
Namespacing n/a February 24th, 2014
Network Link Conditioner n/a September 9th, 2013
Never 4.2 July 30th, 2018
Object Subscripting n/a June 17th, 2013
Option​Set 4.2 November 7th, 2018
PHImage​Manager 2.0 September 15th, 2015
Password Rules / UIText​Input​Password​Rules 4.2 July 23rd, 2018
Quick Look Debugging 1.2 March 30th, 2015
Reactive​Cocoa n/a February 18th, 2013
Reader Submissions -
New Year's 2013
n/a January 1st, 2013
Reader Submissions -
New Year's 2014
n/a January 1st, 2014
Reader Submissions -
New Year's 2015
1.0 January 1st, 2015
Reader Submissions -
New Year's 2016
2.1 January 4th, 2016
Search Kit 2.0 November 24th, 2015
Stewardship n/a January 27th, 2014
Swift & the Objective-C Runtime 2.0 September 19th, 2015
Swift 1.2 1.2 February 9th, 2015
Swift Collection Protocols 1.2 February 23rd, 2015
Swift Comparison Protocols 1.2 September 22nd, 2014
Swift Default Protocol Implementations 1.2 September 2nd, 2014
Swift Documentation 4.2 July 11th, 2018
Swift GYB 4.2 July 9th, 2018
Swift Literals 4.2 August 18th, 2014
Swift Operators 4.2 October 3rd, 2018
Swift Property Observers 4.2 August 20th, 2018
Swift System Version Checking 4.0 October 6th, 2014
Swift​Syntax 4.2 October 22nd, 2018
Temporary Files 4.2 March 3rd, 2014
The Death of Cocoa 1.0 December 29th, 2014
Time​Interval, Date, and Date​Interval 4.2 October 8th, 2018
Type Encodings n/a February 4th, 2013
UIAccessibility n/a September 10th, 2012
UIActivity​View​Controller 2.0 September 7th, 2015
UIAlert​Controller 1.0 September 30th, 2014
UIAppearance 2.0 September 8th, 2015
UIApplication​Delegate launch​Options t.b.c. December 16th, 2013
UICollection​View 2.0 September 9th, 2015
UIField​Behavior 4.2 September 24th, 2018
UIKey​Command 2.0 July 27th, 2015
UILocalized​Indexed​Collation 2.0 September 8th, 2015
UIMenu​Controller 2.0 September 8th, 2015
UIPrint​Interaction​Controller 1.0 November 17th, 2014
UIReference​Library​View​Controller /
DCSDictionary​Ref/
/usr/share/dict/words
t.b.c. March 10th, 2014
UISplit​View​Controller 4.2 September 26th, 2018
UIText​Checker 4.2 April 25th, 2016
Unit Testing n/a May 27th, 2013
Unmanaged 1.2 April 13th, 2015
Value​Transformer 4.2 October 17th, 2018
Void 4.2 October 31st, 2018
WKWeb​View 4.2 July 25th, 2018
Watch​Kit 1.0 December 1st, 2014
XCPlayground 1.2 May 11th, 2015
XCTest​Case /
XCTest​Expectation /
measure​Block()
1.2 June 25th, 2015
Xcode Key Bindings & Gestures n/a September 30th, 2013
Xcode Plugins n/a April 14th, 2014
Xcode Snippets n/a September 2nd, 2013
__attribute__ n/a January 14th, 2013
guard & defer 4.2 August 1st, 2018
i​Cloud 1.1 April 1st, 2013
i​OS 12 4.2 September 17th, 2018
i​OS 7 2.0 September 12th, 2015
i​OS 8 2.0 September 12th, 2015
i​OS 9 2.0 June 22nd, 2015
instancetype n/a December 10th, 2012
mac​OS Dynamic Desktop 4.2 October 1st, 2018
nil / Nil / NULL / NSNull n/a January 7th, 2013
numeric​Cast(_:) 4.2 October 15th, 2018
rand(3) / random(3) / arc4random(3) / et al. t.b.c. August 12th, 2013
xctool n/a November 4th, 2013
Pay 1.0 December 8th, 2014