Book excerpt: A comprehensive guide for programming enthusiasts who wish to gain a firm command of the fundamentals and advanced Swift concepts Key FeaturesSixth edition of this bestselling book, improved and updated to cover the latest version of the Swift 5.3 programming languageGet to grips with popular and modern design techniques to write easy-to-manage Swift codeUse core Swift features such as concurrency, generics, and copy-on-write in your codeBook Description Over the years, Mastering Swift has proven itself among developers as a popular choice for an in-depth and practical guide to the Swift programming language. This sixth edition comes with the latest features, an overall revision to align with Swift 5.3, and two new chapters on building swift from source and advanced operators. From the basics of the language to popular features such as concurrency, generics, and memory management, this in-depth guide will help you develop your expertise and mastery of the language. As you progress, you will gain practical insights into some of the most sophisticated elements in Swift development, including protocol extensions, error handling, and closures. The book will also show you how to use and apply them in your own projects. In later chapters, you will understand how to use the power of protocol-oriented programming to write flexible and easier-to-manage code in Swift. Finally, you will learn how to add the copy-on-write feature to your custom value types, along with understanding how to avoid memory management issues caused by strong reference cycles. By the end of this Swift book, you will have mastered the Swift 5.3 language and developed the skills you need to effectively use its features to build robust applications. What you will learnUnderstand core Swift components, such as operators, collections, control flows, and functionsIdentify how and when to use classes, structures, and enumerationsUse protocol-oriented design with extensions to write easy-to-manage codeLeverage design patterns with Swift to solve commonly occurring design problemsApply copy-on-write for your custom value types to improve performanceAdd concurrency to your applications using Grand Central Dispatch and operation queuesImplement generics to write flexible and reusable codeWho this book is for This book is for beginners with a basic understanding of programming and experienced developers looking to learn Swift programming. Familiarity with Apple's tools will be beneficial but not mandatory. All examples should also work on the Linux and Windows platforms