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1. Introduction
Swift 5.7 is now officially released! Swift 5.7 includes major additions to the language and standard library, enhancements to the compiler for a better developer experience, improvements to tooling in the Swift ecosystem including SourceKit-LSP and the Swift Package Manager, improved Windows support, and more .
Swift 5.7 is the culmination of countless contributions from members of the entire Swift community. Thanks to everyone in the community for the Swift forum discussions, bug reports, pull requests, educational content, and more!
If you're new to Swift, The Swift Programming Language is the official guide to Swift, updated for version 5.7. The Swift community maintains many translations . It's also available for free at the Apple Books store .
2. Language and Standards Libraries
Swift 5.7 language and standard library has many improvements:
- New shorthand syntax for common boilerplate code, including
if letstatement and multi-statement closure type annotations - Removes long-standing language constraints to make generic programming more seamless
- Enhance data race security with new annotations and opt-in diagnostics
- Actor isolation in a distributed environment
- Improved usability of a set of existing pointer APIs
- Brand new language support and API for string manipulation
Most of these features were discussed at WWDC22 and in the previous blog post WWDC22's Swift Language Announcements . You can also find a full list of language and standard library Swift Evolution proposals in the Swift Evolution appendix .