swift-concurrency-6-2

To fix Swift data race safety errors during migration, adopt Swift 6.2's Approachable Concurrency model to eliminate implicit unsafe background offloading. This approach ensures async functions stay on their calling actor by default, resolving unexpected data races with minimal manual code changes.

MainActor default inference is an optional mode in Swift 6.2 that automatically isolates app code to the MainActor. This feature reduces boilerplate by removing the need for manual @MainActor annotations throughout your iOS application architecture.

To offload CPU-intensive tasks to background threads in Swift 6.2, use the @concurrent annotation for explicit background execution. This allows you to intentionally move heavy work like image processing off the main thread without triggering data race safety errors.

Yes, MainActor-isolated types can safely conform to non-isolated protocols in Swift 6.2. This is achieved through isolated protocol conformances, which remove the need for unsafe workarounds when integrating isolated types with non-isolated protocol definitions.

No, you do not need to manually annotate everything for Swift concurrency data race safety. Swift 6.2 provides MainActor default inference to automatically isolate app code, significantly reducing the @MainActor annotation boilerplate required for safe iOS development.

Your async function runs in the background unexpectedly due to implicit background offloading in older Swift concurrency models. Swift 6.2 fixes this by making async functions stay on the calling actor by default, eliminating this behavior and preventing associated data races.