so what's the right way to swift string concurrenct

To handle Swift string concurrency correctly, you should leverage Swift's concurrency features, such as actors, async/await, and the main actor isolation. Swift 6 introduces data race safety by default, turning potential data race issues into compile-time errors, which significantly enhances the security and reliability of your applications.

Here are some key points to consider:

1. Actors: Use actors to encapsulate shared mutable state. Actors automatically serialize access to their state, ensuring that only one task can execute at a time. This helps prevent data races when accessing shared data.

2. Async/Await: Use the async and await keywords to handle asynchronous operations. This allows you to write asynchronous code that is easy to read and maintain.

3. Main Actor Isolation: For UI-related code, you can use the @MainActor attribute to ensure that all accesses to certain properties or methods are performed on the main thread. This is particularly useful for SwiftUI views and other UI components.

4. Concurrency Checking: Enable Swift's complete concurrency checking to identify potential concurrency issues in your code. This can be done by setting the concurrency checking setting to complete checking in your project's settings.

For more detailed guidance, you can refer to the session Migrate your app to Swift 6 (08:53) which covers adopting concurrency features and strategies for migrating to Swift 6. Additionally, the session What’s new in Swift (26:07) discusses Swift 6 language mode and data-race safety.