Book Image

Swift Protocol-Oriented Programming - Fourth Edition

By : Jon Hoffman
Book Image

Swift Protocol-Oriented Programming - Fourth Edition

By: Jon Hoffman

Overview of this book

Protocol-oriented programming is an incredibly powerful concept at the heart of Swift's design. Swift's standard library was developed using POP techniques, generics, and first-class value semantics; therefore, it is important for every Swift developer to understand these core concepts and take advantage of them. The fourth edition of this book is improved and updated to the latest version of the Swift programming language. This book will help you understand what protocol-oriented programming is all about and how it is different from other programming paradigms such as object-oriented programming. This book covers topics such as generics, Copy-On-Write, extensions, and of course protocols. It also demonstrates how to use protocol-oriented programming techniques via real-world use cases. By the end of this book, you will know how to use protocol-oriented programming techniques to build powerful and practical applications.
Table of Contents (11 chapters)

Implementing vehicle types

The implementations of vehicle types were slightly different between the object-oriented example and the protocol-oriented example; however, the difference is still pretty significant. We will look at the differences between these two examples, but first, let's take a look at the code again to remind us how we implemented the vehicle types. We will look at how we implemented the Tank type in the object-oriented example first:

class Tank: Vehicle {
override init() {
super.init() vehicleTypes = [.land]

vehicleAttackTypes = [.land]
vehicleMovementTypes = [.land]
landAttackRange = 5

hitPoints = 68
}
override func doLandAttack() {
print("Tank Attack")
}
override func doLandMovement() {
print("Tank Move")
}
}

This class is a subclass of the Vehicle superclass...