Book Image

Mastering Swift 5 - Fifth Edition

By : Jon Hoffman
Book Image

Mastering Swift 5 - Fifth Edition

By: Jon Hoffman

Overview of this book

Over the years, the Mastering Swift book has established itself amongst developers as a popular choice as an in-depth and practical guide to the Swift programming language. The latest edition is fully updated and revised to cover the new version: Swift 5. Inside this book, you'll find the key features of Swift 5 easily explained with complete sets of examples. From the basics of the language to popular features such as concurrency, generics, and memory management, this definitive guide will help you develop your expertise and mastery of the Swift language. Mastering Swift 5, Fifth Edition will give you an in-depth knowledge of some of the most sophisticated elements in Swift development, including protocol extensions, error handling, and closures. It will guide you on how to use and apply them in your own projects. Later, you'll see how to leverage the power of protocol-oriented programming to write flexible and easier-to-manage code. You will also see how to add the copy-on-write feature to your custom value types and how to avoid memory management issues caused by strong reference cycles.
Table of Contents (20 chapters)

Properties

Properties associate values with a class or a structure. There are two types of properties:

  • Stored properties: These will store variable or constant values as part of an instance of a class or structure. Stored properties can also have property observers that can monitor the property for changes and respond with custom actions when the value of the property changes.
  • Computed properties: These do not store a value themselves but instead retrieve and possibly set other properties. The value returned by a computed property can also be calculated when it is requested.

Stored properties


A stored property is a variable or constant that is stored as part of an instance of a class or structure. These are defined with...