What’s new in Xcode 16を要約して。詳しい解説もほしい。

What’s New in Xcode 16

Xcode 16 introduces several exciting features and improvements across various stages of app development, from editing and building to debugging and testing.

Code Editing Enhancements

Code Completion: Xcode 16 features an advanced code completion engine powered by a model specifically trained for Swift and Apple SDKs. This engine provides more accurate suggestions by using the surrounding code context, such as function names and comments. It runs locally on Apple silicon, ensuring privacy and speed.
Swift 6 Concurrency Safety: Swift 6 introduces a new language mode that provides concurrency safety guarantees, turning potential runtime data races into compile-time issues. This enhances code correctness and safety.

Build Improvements

Explicit Modules: This feature improves build parallelism, diagnostics, and debugging without requiring code changes. Explicit modules are enabled by default for C and Objective-C, while Swift requires opting in.
Swift Package Integration: Enhancements in Swift package integration allow for more efficient build processes.

Previews and Debugging

Faster Previews: Xcode 16 offers faster UI previews by using the same build products for previews and builds, eliminating the need for separate copies.
Flame Graphs: New flame graphs in Instruments provide a visual representation of call stacks, helping identify performance issues.

Additional Features

Swiftassist: A cloud-based companion that assists with coding tasks, such as exploring new APIs and frameworks.
Localization Enhancements: Improved localization workflows make it easier to bring apps to a global audience.

For more detailed insights, you can explore the session What’s new in Xcode 16.

Relevant Sessions

These sessions provide a comprehensive overview of the new features and improvements in Xcode 16, making it an exciting time for developers working on Apple platforms.