Swift Best Practices

When to Use This Skill

This skill should be triggered when:

• Writing or reviewing Swift code
• Setting up Swift packages or Xcode projects
• Working with iOS, macOS, watchOS, tvOS, or visionOS
• Discussing Swift patterns, concurrency, or architecture
• Configuring Package.swift or build settings

Core Capabilities

1. Package Management: Swift Package Manager (SPM) exclusively
2. Type Safety: Strict concurrency, avoid Any, leverage generics
3. Error Handling: Typed throws (Swift 6), Result types
4. State Modeling: Enums with associated values for impossible states
5. Concurrency: async/await, actors, structured concurrency