rshankras/swift-development
skills/swift/SKILL.md
Swift language patterns and best practices including concurrency, performance, and modern idioms. Use for Swift language-level code review or architecture guidance.
$ install --global
skillsauthnpx skillsauth add rshankras/claude-code-apple-skills swift-developmentInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Last scanned: Jul 14, 2026, 5:49 AM132.3s11 files scanned
SKILL.md
- name:
- swift-development
- description:
- Swift language patterns and best practices including concurrency, performance, and modern idioms. Use for Swift language-level code review or architecture guidance.
- allowed-tools:
- [Read, Glob, Grep]
Swift Development
Swift language-level guidance that applies across all Apple platforms.
When This Skill Activates
Use this skill when the user:
- Asks about Swift concurrency (async/await, actors, Sendable, TaskGroup)
- Needs help with Swift 6 strict concurrency migration
- Has data race or actor isolation errors
- Asks about InlineArray, Span, or low-level memory performance
- Wants to eliminate heap allocations or replace unsafe pointers
- Asks about modern Swift patterns independent of any specific platform
Available Modules
concurrency-patterns/
Swift concurrency architecture and patterns.
- Swift 6.2 approachable concurrency features (incl.
nonisolated(nonsending), Apple's adoption doctrine) - Structured concurrency (async let, TaskGroup, .task modifier, task-local values)
- Actors, isolation, reentrancy, @MainActor, Sendable
- Runtime internals + profiling (cooperative pool, unsafe primitives, Swift Concurrency Instrument)
- Continuations for bridging legacy APIs
- Swift 6 strict concurrency migration guide
concurrency/
Swift 6.2 concurrency updates reference — the what-changed view (async-stays-on-caller, default MainActor inference, isolated conformances, @concurrent) with migration steps from 6.0/6.1 and top mistakes. Overlaps concurrency-patterns/swift62-concurrency.md by design: use this file when the question is "what changed in 6.2?", use concurrency-patterns when building or reviewing async code.
memory/
InlineArray, Span, and the Swift performance cost model.
- InlineArray: fixed-size, stack-allocated collections with zero heap overhead
- Span family: safe, non-escapable access to contiguous memory (+ OutputRawSpan, swift-binary-parsing)
- Lifetime dependencies and non-escapable type constraints
swift-performance.md: the cost model — allocation, ARC/retain-release, exclusivity checks, dispatch, generics vs existentials, closures,~Copyableownership
How to Use
- Identify user's need from their question
- Read relevant module files from subdirectories
- Apply the guidance to their specific context
- Cross-reference with platform-specific skills (ios/, macos/) as needed
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