Swift 5.2 Released!

Swift 5.2 is now officially released! 🎉

This release focuses on improving the developer experience:

• Improved compiler diagnostics (errors and warnings) and code completion
• Increased reliability in debugging
• Improved handling of dependencies in the Swift Package Manager
• Tooling improvements with LSP and SwiftSyntax

… and much more. Further, a few additions to the language have been added that provide new capabilities for building expressive APIs. This blog post takes a quick tour of the main changes.

→ swift.org/blog/swift-5.2-released/

Swift 5.2 enhances the developer experience with improved compiler diagnostics, faster code completion, better debugging, and refined Swift Package Manager dependency handling. While introducing new language features like key path expressions as functions and callable user-defined types.

The compiler now uses a "breadcrumbs" approach to pinpoint multiple type errors with actionable fix-its, significantly clarifying error messages for issues like missing enum cases or SwiftUI initialiser errors.

Incremental build efficiency is boosted by caching and lazy evaluation, reducing redundant type-checking, and SourceKit-LSP in Xcode 11.4 adds support for fix-its and local refactoring, with performance gains in SwiftSyntax and C/C++/Objective-C handling.