Swift 6 有哪些更新？

Swift 6 introduces several significant updates and improvements. Here are the key highlights:

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 (What’s new in Swift).

2. Non-Copyable Types: Swift 6 introduces non-copyable types, which means that all Swift types, whether value types or reference types, are copyable by default, but you can now define types that cannot be copied (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 (What’s new in Swift).

4. Concurrency Improvements: There are significant improvements to concurrency, including better data race checking and the ability to pass non-sendable values across active isolation boundaries (Platforms State of the Union).

5. Swift Testing: An all-new testing framework named Swift Testing has been introduced, which has expressive APIs that make it simple to write tests (Platforms State of the Union).

6. Incremental Migration: The new Swift 6 language mode allows for incremental migration, meaning you can adopt it module by module without needing to wait for all dependencies to migrate (What’s new in Swift).

7. Improved Interoperability: There are improvements in interoperability, including better integration with C and C++ (What’s new in Swift).

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