@Observable code exampe

It seems like you're interested in observable code examples. At WWDC, Apple introduced several features related to observables across different sessions. Here are some highlights:

1. UIKit and Observables: In the session "What’s new in UIKit," automatic observation tracking was discussed. UIKit now supports observable model objects, which can automatically track dependencies and update UI components like labels and collection view cells when the underlying data changes. This feature reduces the need for extra code to keep the UI in sync with data changes. You can learn more about this in the chapter on Automatic observation tracking.

2. SwiftUI and Observables: In the session "Optimize SwiftUI performance with Instruments," the use of observables in SwiftUI was explored. The session highlighted how to optimize performance by creating more granular data dependencies, which helps in reducing unnecessary view updates. This is particularly useful when dealing with collections or lists where only specific items change. More details can be found in the chapter on Understand causes and effects of SwiftUI updates.

3. Swift and Observables: The session "What’s new in Swift" introduced the Observation Library, which provides APIs for tracking state changes in an object graph. This allows developers to stream state changes using an async sequence from an observable type, making it easier to react to changes in data. This is covered in the chapter on Libraries: Observation.

These sessions provide a comprehensive overview of how observables are being integrated into Apple's frameworks to enhance app performance and simplify state management.