swift-conventions

SKILL.md

Expert decision frameworks for Swift choices that require experience. Claude knows Swift syntax — this skill provides the judgment calls.

The non-obvious trade-off: Structs with reference-type properties (arrays, classes inside) lose copy-on-write benefits. A struct containing [UIImage] copies the array reference, not images — mutations affect all "copies."

When Combine still wins: Multiple publishers needing combineLatest, merge, or debounce. Converting this to pure async/await requires manual coordination that Combine handles elegantly.

Claude 不會本能地做出專家 Swift 決策：結構與類別的權衡、@MainActor 放置、async/await 與組合選擇、記憶體管理陷阱以及 iOS 特定的反模式。在為 iOS/tvOS 應用程式編寫 Swift 程式碼、審查 Swift 架構決策或偵錯記憶體/並發問題時使用。觸發關鍵字：Swift、iOS、tvOS、actor、async、Sendable、retain Cycle、記憶體洩漏、struct、class、protocol、generic 來源：kaakati/rails-enterprise-dev。

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