Provides the complete content of 'The Swift Programming Language (6.2.3)' book by Apple. Use this skill when you need to verify Swift syntax, look up language features, understand concurrency, resolve compiler errors, or consult the formal language reference.
Install
npx skills add kylehughes/the-unofficial-swift-programming-language-skill --skill programming-swiftnpx skills add kylehughes/the-unofficial-swift-programming-language-skill --skill programming-swift -a claude-code -gnpx skills add kylehughes/the-unofficial-swift-programming-language-skill --skill programming-swift -a codex -ggemini skills install https://github.com/kylehughes/the-unofficial-swift-programming-language-skill.git --path programming-swiftgh skill install kylehughes/the-unofficial-swift-programming-language-skill programming-swiftgit clone --depth 1 https://github.com/kylehughes/the-unofficial-swift-programming-language-skill /tmp/kylehughes__the-unofficial-swift-programming-language-skill
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/kylehughes__the-unofficial-swift-programming-language-skill/programming-swift ~/.claude/skills/programming-swift # Claude Code
cp -R /tmp/kylehughes__the-unofficial-swift-programming-language-skill/programming-swift ~/.agents/skills/programming-swift # Codex, Cursor, Gemini CLI, Copilot, OpenCode