swift-concurrency-6-2

Migrating to Swift 6.2 concurrency requires enforcing single-actor default isolation and explicit concurrency patterns. Enable MainActor default inference and adopt isolated conformances to ensure predictable single-threaded default behavior and eliminate data race risks.

MainActor default isolation is a Swift 6.2 concurrency model enforcing single-threaded default behavior. It keeps async work on the caller's actor by default, requiring explicit @concurrent annotations for background offloading to prevent data races.

Use @concurrent in Swift 6.2 when offloading CPU-bound work to background threads. It explicitly declares concurrent execution outside the MainActor, ensuring safe background processing while maintaining predictable single-threaded defaults for your app.

Yes, isolated conformances can be applied to existing Swift codebases during migration. They enforce safe actor isolation boundaries, allowing large codebases to transition predictably to Swift 6.2's single-threaded default behavior without data races.

Swift 6.2 enforces single-threaded default behavior to eliminate implicit offloading that previously caused data races. This approach ensures predictable code execution by requiring explicit concurrency patterns for background tasks.