Book Image

Hands-On Design Patterns with Swift

By : Florent Vilmart, Giordano Scalzo, Sergio De Simone
Book Image

Hands-On Design Patterns with Swift

By: Florent Vilmart, Giordano Scalzo, Sergio De Simone

Overview of this book

Swift keeps gaining traction not only amongst Apple developers but also as a server-side language. This book demonstrates how to apply design patterns and best practices in real-life situations, whether that's for new or already existing projects. You’ll begin with a quick refresher on Swift, the compiler, the standard library, and the foundation, followed by the Cocoa design patterns – the ones at the core of many cocoa libraries – to follow up with the creational, structural, and behavioral patterns as defined by the GoF. You'll get acquainted with application architecture, as well as the most popular architectural design patterns, such as MVC and MVVM, and learn to use them in the context of Swift. In addition, you’ll walk through dependency injection and functional reactive programming. Special emphasis will be given to techniques to handle concurrency, including callbacks, futures and promises, and reactive programming. These techniques will help you adopt a test-driven approach to your workflow in order to use Swift Package Manager and integrate the framework into the original code base, along with Unit and UI testing. By the end of the book, you'll be able to build applications that are scalable, faster, and easier to maintain.
Table of Contents (22 chapters)
Title Page
Copyright and Credits
About Packt
Contributors
Preface
Index

Chapter 8. Swift-Oriented Patterns

Swift is a modern language and, coming from a purely object-oriented language background, can feel overwhelming. With its strong functional capabilities as well as extensive generics support, Swift is an expressive language that generalizes an interesting programming paradigm: protocol-oriented programming.

Protocol-oriented programming doesn't replace object-oriented programming or functional programming—it's another tool that helps you elevate your code bases to new heights. It doesn't magically transform poorly written code into unicorns and rainbows.

Alongside powerful protocols come generics-oriented programming. Generics let you write functions with protocols instead of concrete types. When programming with concrete types, only children of this type, through inheritance, can be used in place of the parent type. With protocols and generics, any type that conforms to, or adopts, the protocol can be used. This leads to a slew of unprecedented capabilities...