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Swift concurrency patterns including Swift 6.2 approachable concurrency, structured concurrency, actors, continuations, and migration.
Passed 23 of 24 test cases with the skill, and 22 of 24 without it.
1 fixed22 passed either way1 still failing0 broke
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A test case the skill fixed. Same model, same prompt, with and without the skill.
In a Swift 6.2 iOS codebase, I have a method on a @MainActor view model that calculates heavy statistical data. To avoid UI freezing, I am considering wrapping the work inside Task.detached. Is there a Swift 6.2 language attribute designed specifically to explicitly mark a function to run off the main thread on a background thread pool, and which file documents this?
| Checked | Without skill | With skill |
|---|---|---|
| Recommends @concurrent | Missed | Passed |
The instructions your model reads when the skill loads.
Comprehensive guide for Swift concurrency covering async/await, structured concurrency, actors, and the Swift 6.2 "Approachable Concurrency" features. Focuses on patterns that prevent data races and common mistakes that cause crashes.
What concurrency problem are you solving?
│
├─ Swift 6 compiler errors / migration
│ └─ migration-guide.md
│
├─ Swift 6.2 new features (@concurrent, isolated conformances)
│ └─ swift62-concurrency.md
│
├─ Running work in parallel (async let, TaskGroup)
│ └─ structured-concurrency.md
│
├─ Thread safety for shared mutable state
│ └─ actors-and-isolation.md
│
├─ Bridging old APIs (delegates, callbacks) to async/await
│ └─ continuations-bridging.md
│
├─ Hangs, slow parallelism, thread-pool problems, profiling
│ └─ concurrency-internals.md
│
└─ General async/await patterns
└─ See macos/coding-best-practices/modern-concurrency.md for basics
test cases passed, vs 22 / 24 without
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