what are new features related to performance

Apple introduced several new features related to performance at WWDC, focusing on various areas such as Swift, machine learning, gaming, and development tools. Here are some highlights:

1. Swift 6.2: This release includes features focused on performance, such as inline arrays, which allow arrays with a fixed size to be stored on the stack, enabling significant performance optimizations. A new span type provides a safe alternative to pointers for fast access to contiguous memory, improving communication with unsafe languages like C (Platforms State of the Union).

2. Machine Learning with Metal: New features improve the performance of transformer models, including enhanced compute performance, memory bandwidth savings, and quality improvements. These updates are part of the Metal Performance Shaders Graph, which is used in popular frameworks like Core ML (Accelerate machine learning with Metal).

3. SwiftUI: There are major performance improvements in SwiftUI, particularly in scrolling and list updates. Lists on macOS can now load and update significantly faster, enhancing the user experience across all Apple platforms (What’s new in SwiftUI).

4. Xcode 26: The new version of Xcode introduces runtime API checks and a Thread Performance Checker to detect threading issues, helping developers optimize their code for better performance. Additionally, Xcode now provides metrics and recommendations to help developers understand and improve their app's performance (What’s new in Xcode).

5. Gaming: The Metal Performance HUD now includes performance insights and additional metrics to help developers optimize their games for increased frame rates. This tool provides real-time performance metrics and recommendations for optimization (Level up your games).

These updates reflect Apple's ongoing commitment to enhancing performance across its platforms, providing developers with the tools and features needed to create fast and efficient applications.