It's fun to create your first toy iOS or Mac app in Swift. Writing secure, reliable, professional-grade software is a different animal altogether. The Swift language includes an amazing set of high-powered features, and it supports a wide range of programming styles and techniques. You just have to roll up your sleeves and learn Swift in depth. "Swift in depth" guides you concept by concept through the skills you need to build professional software for Apple platforms, such as iOS and Mac; also on the server with Linux. By following the numerous concrete examples, enlightening explanations, and engaging exercises, you'll finally grow powerful techniques like generics, efficent error handling, protocol-oriented programming, and advanced Swift patterns. Author Tjeerd in 't Veen reveals the high-value, difficult-to-discover Swift techniques he's learned through his own hard-won experience.

Includes index.

Introducing Swift in depth -- Modeling data with enums -- Writing cleaner properties -- Making optionals second nature -- Demystifying initializers -- Effortless error handling -- Generics -- Putting the pro in protocol-oriented programming -- Iterators, sequences, and collections -- Understanding map, flatMap, and compactMap -- Asynchronous error handling with Result -- Protocol extensions -- Swift patterns -- Delivering quality Swift code -- Where to Swift from here.