Whats new in swift6

Swift 6 introduces several new features and improvements aimed at enhancing portability, performance, and the overall developer experience. Here are some of the key updates:

1. Data Race Safety: Swift 6 introduces a new language mode that provides data race safety guarantees, helping developers write correct concurrent programs. This mode is opt-in and can be adopted module by module (Platforms State of the Union).

2. Non-Copyable Types: Swift 6 introduces non-copyable types, which suppress the default copyability of Swift types. This is useful for scenarios requiring unique ownership, such as managing system resources like files (What’s new in Swift).

3. Embedded Swift: A new language subset called Embedded Swift is introduced, which can run on highly constrained systems like operating system kernels and microcontrollers (Platforms State of the Union).

4. Swift Testing: An all-new testing framework named Swift Testing has been introduced, featuring expressive APIs that simplify writing tests (Platforms State of the Union).

5. Concurrency Improvements: Enhancements to concurrency include better data race checking and the ability to pass non-sendable values across active isolation boundaries safely (What’s new in Swift).

6. GitHub Migration: The Swift project will be moving to a new organization on GitHub, named swiftlang, which will host the Swift Compiler foundation and other key libraries (What’s new in Swift).

For a detailed overview of these features, you can watch the session What’s new in Swift.