axiom-swift-concurrency
Swift 6 Concurrency Guide
Purpose: Progressive journey from single-threaded to concurrent Swift code
Swift Version: Swift 6.0+, Swift 6.2+ for @concurrent
iOS Version: iOS 17+ (iOS 18.2+ for @concurrent)
Xcode: Xcode 16+ (Xcode 16.2+ for @concurrent)
Context: WWDC 2025-268 "Embracing Swift concurrency" - approachable path to data-race safety
When to Use This Skill
✅ Use this skill when:
- Starting a new project and deciding concurrency strategy
- Debugging Swift 6 concurrency errors (actor isolation, data races, Sendable warnings)
- Deciding when to introduce async/await vs concurrency
- Implementing
@MainActorclasses or async functions - Converting delegate callbacks to async-safe patterns
- Deciding between
@MainActor,nonisolated,@concurrent, or actor isolation - Resolving "Sending 'self' risks causing data races" errors
- Making types conform to
Sendable
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