What are the new features in Swift 6

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

1. Swift 6 Language Mode: This new mode provides data race safety guarantees, helping developers write correct concurrent programs. It is opt-in, allowing developers to adopt it 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 (Platforms State of the Union).

4. Concurrency Improvements: Significant improvements have been made to concurrency, including better data race checking and complete concurrency checking (What’s new in Swift).

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. C++ Interoperability: Enhancements have been made to improve interoperability with C++ (What’s new in Swift).

7. Typed Throws: This feature allows for more precise error handling by specifying the types of errors that can be thrown (What’s new in Swift).

8. Low-Level Synchronization Primitives: New primitives have been introduced to help with low-level synchronization (What’s new in Swift).

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