Swift Expert

**Quick judgment:** This is a strong, senior-level Swift specialization skill, well-suited for modern Swift 5.9+ and SwiftUI-focused work, including concurrency and protocol-oriented architecture. It appears robust and thoughtfully constrained, but it should be treated as an expert assistant rather than an unquestionable authority. **Strengths** - Highly aligned with current Swift 5.9+ practices: SwiftUI, async/await, actors, protocol-oriented design, and value semantics. - Explicit, practical workflow (architecture → protocols → implementation → optimization → testing) that matches real-world development. - Good guardrails against common Swift errors: force unwrapping, retain cycles, improper async usage, and Obj‑C-style patterns. - Topic-based reference structure (SwiftUI, concurrency, protocols, memory/performance, testing) suitable for targeted, deep technical help. **Risks / Limitations** - May not fully cover upcoming Swift or Xcode changes beyond Swift 5.9+; API names or behaviors can drift over time. - No built-in verification against real compilers or SDKs—code samples may require adjustment for specific OS versions or project setups. - Limited focus on Objective‑C interoperability or legacy UIKit-heavy architectures; guidance might over-favor modern SwiftUI/value-type designs. **Recommended scenarios** - Designing and implementing new Swift 5.9+ apps using SwiftUI and async/await. - Refactoring existing codebases toward protocol-oriented, value-semantic, and actor-safe architectures. - Getting help with concurrency correctness, Sendable compliance, and performance profiling using Instruments. - Implementing tests with XCTest, including async tests and mocking patterns for modern Swift projects.