Reimplementation of Implicitly Unwrapped Optionals
Swift 4.1 reimplements implicitly unwrapped optionals (IUOs) so they act as regular optionals with a flag that allows automatic unwrapping when needed, rather than as a distinct type.
Blog
Monthly update #0335 • March 2018
Monthly update 335 • March 2018 • 2018-03-01 - 2018-03-31
Swift 4.1 Released!
Apple released Swift 4.1 as a minor update that maintains source compatibility with Swift 4.0. It adds generics features such as conditional conformance and synthesised Equatable and Hashable support.
Food Rules by Michael Pollan
In Food Rules: An Eater’s Manual, Michael Pollan simplifies the complex world of nutrition into easy-to-follow tips for eating well.
Monthly update #0334 • February 2018
Monthly update 334 • February 2018 • 2018-02-01 - 2018-02-28
Swift 4.2 Release Process
Swift 4.2 serves as a step towards ABI stability in Swift 5, incorporating ABI changes for performance, bug fixes, and targeted improvements to compile-time speed.
Code Size Optimization Mode in Swift 4.1
Swift 4.1 adds a new optimisation mode called -Osize. This mode helps reduce code size by 5 to 30 percent in some projects.
Monthly update #0333 • January 2018
Monthly update 333 • January 2018 • 2018-01-01 - 2018-01-31
Swift Forums Now Open!
The Swift project has moved its main discussions from mailing lists to Swift Forums. The old mailing lists are shut down and archived, with their content imported into the new system.
Conditional Conformance in the Standard Library
Swift 4.1 adds conditional conformances, which let generic types like Array and Optional conform to protocols such as Equatable or Hashable only when their elements do.
Monthly update #0332 • December 2017
Monthly update 332 • December 2017 • 2017-12-01 - 2017-12-31
Monthly update #0331 • November 2017
Monthly update 331 • November 2017 • 2017-11-01 - 2017-11-30
The Midnight Line by Lee Child
In The Midnight Line, Reacher finds a West Point ring in a pawn shop and tracks its owner, a female veteran caught in Wyoming’s opioid trade.
Monthly update #0330 • October 2017
Monthly update 330 • October 2017 • 2017-10-01 - 2017-10-31
Swift 4.1 Release Process
Swift 4.1 is a source-compatible update to Swift 4.0 that adds minor language enhancements, improves the Swift Package Manager and Linux support, and includes quality fixes to the compiler and standard library, but it lacks binary compatibility due to ABI stabilisation work for Swift 5.
Xcode 9.1 Improves Display of Fatal Errors
Swift has features that let you set expectations in your code. If these are not met at runtime, the program stops.
Dictionary and Set Improvements in Swift 4.0
Swift 4 adds new methods and initialisers to dictionaries and sets that simplify tasks like grouping, filtering, and transforming data.
Monthly update #0329 • September 2017
Monthly update 329 • September 2017 • 2017-09-01 - 2017-09-30
Swift 4.0 Released!
Apple released Swift 4 as a major update that builds on Swift 3 with better robustness, stability, source compatibility, standard library improvements, and new features like archival and serialisation.
Monthly update #0328 • August 2017
Monthly update 328 • August 2017 • 2017-08-01 - 2017-08-31
Swift Local Refactoring
Xcode 9 features a new refactoring engine that transforms Swift code either locally in one file or globally across files and languages.
Monthly update #0327 • July 2017
Monthly update 327 • July 2017 • 2017-07-01 - 2017-07-31
Monthly update #0326 • June 2017
Monthly update 326 • June 2017 • 2017-06-01 - 2017-06-30
Swift Package Manager Manifest API Redesign
Swift 4 redesigned the Package.swift manifest API in the Package Manager to make it simpler and match the design rules.
Monthly update #0325 • May 2017
Monthly update 325 • May 2017 • 2017-05-01 - 2017-05-31