Swift６の新機能は？

Swift 6 introduces several new features and improvements aimed at enhancing performance, safety, and ease of use. Here are some of the key updates:

1. Background Indexing: Enabled by default for SwiftPM projects in VS Code and other IDEs, improving editor features like Jump to Definition and code completion results.

2. Inline Arrays: Allows declaration of arrays with a fixed size that can be stored on the stack, enhancing performance by avoiding heap memory usage.

3. New Span Type: Provides a safe alternative to pointers for fast, direct access to contiguous memory, improving interoperability with languages like C.

4. Strict Memory Safety: A new mode that requires explicit acknowledgment of unsafe API usage in source code, enhancing security.

5. Concurrency Improvements: Swift 6.2 makes concurrency more approachable by defaulting to single-threaded execution until concurrency is explicitly introduced, reducing data race risks.

6. Embedded Swift: Expanded support for writing code targeting constrained environments like firmware for embedded devices.

7. Development Workflow Enhancements: Improvements in writing, building, and debugging code, particularly in VS Code with the Swift extension.

For more detailed information, you can refer to the session What’s new in Swift (00:00:00).