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- Herausgeber: Packt Publishing
- Kategorie: Wissenschaft und neue Technologien
- Sprache: Englisch
Build fast and powerful applications by exploiting the power of protocol-oriented programming in Swift
About This Book
- The only book that shows how to harness the power of Protocol-Oriented Programming in Swift to build real-world applications,
- Get familiar with the protocol focused approach of application development,
- Increase the overall productivity and performance of applications with Protocol Oriented Programming.
Who This Book Is For
This book is for Swift developers who want to learn and implement protocol oriented programming in their real world applications.
What You Will Learn
- The difference between Object-Oriented programming and Protocol-Oriented programming
- The difference between reference and value types and when to use each
- How we can leverage tuples to reduce the complexity of our code
- What are protocols and how to use them
- How to implement protocol extensions to create a very flexible code base
- How to implement several design patterns in a Protocol-Oriented approach
- How to solve real world design issue with protocol oriented programming
In Detail
At the heart of Swift's design is an incredibly powerful idea: protocol-oriented programming. Its many benefits include better code maintainability, increased developer productivity and superior application performance. The book will teach the reader how to apply the ideas behind the protocol oriented programing paradigm to improve the code they write.
This book will introduce the readers to the world of protocol-oriented programming in Swift and will demonstrate the ideas behind this new programming paradigm with real world examples. In addition to learning the concepts of Protocol Oriented programming, it also shows the reader how to reduce the complexity of their codebase using protocol extensions. Beginning with how to create simple protocols, readers will learn how to extend protocols and also to assign behaviors to them.
By the end of this book readers will be able to harness the power of protocol-oriented programming to build real world applications.
Style and approach
In its latest release of Swift, Apple has introduced Protocol Extensions as a new feature at the heart of Swifts design making Swift 2 a protocol-oriented language. Protocol oriented programming being a less explored OOP paradigm, there is little guidance on hot to take advantage of protocol extensions in real-world applications. In addition to offering an in-depth coverage of protocol oriented programming and its concepts, this book also explains how a developer can leverage these features to build powerful, real-world applications
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Seitenzahl: 293
Veröffentlichungsjahr: 2016
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Table of Contents
Protocol-Oriented Programming with Swift
Protocol-Oriented Programming with Swift
Copyright © 2016 Packt Publishing
All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.
Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.
Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.
First published: February 2016
Production reference: 1190216
Published by Packt Publishing Ltd.
Livery Place
35 Livery Street
Birmingham B3 2PB, UK.
ISBN 978-1-78588-294-4
www.packtpub.com
Credits
Author
Jon Hoffman
Reviewer
Chuck Gaffney
Commissioning Editor
Wilson D'souza
Acquisition Editor
Tushar Gupta
Content Development Editor
Sumeet Sawant
Technical Editor
Jayesh Sonawane
Copy Editors
Stephen Copestake
Akshata Lobo
Project Coordinator
Dinesh Rathe
Proofreader
Safis Editing
Indexer
Monica Ajmera Mehta
Graphics
Disha Haria
Production Coordinator
Nilesh Mohite
Cover Work
Nilesh Mohite
About the Author
Jon Hoffman has over 20 years of experience in the field of information technology. Over these 20 years, Jon has worked in the areas of system administration, network administration, network security, application development, and architecture. Currently, Jon works as a senior software engineer for Syn-Tech Systems.
Jon has been developing extensively for the iOS platform since 2008. This includes several apps that he has published in the app store—apps that he wrote for third parties and numerous enterprise applications.
Packt Publishing published Jon's first book, iOS and OS X Network Programming, in January 2014.
What really drives Jon is the challenges in the Information Technology field and there is nothing more exhilarating to him than overcoming a challenge. Some of Jon's other interests are watching baseball (go Sox) and basketball (go Celtics). Jon also really enjoys tae kwon do where he and his oldest daughter Kailey earned their black belts together early in 2014. Kim (his wife) earned her black belt in December 2014 and his youngest daughter is currently working towards her black belt.
I would like to thank my wonderful wife Kim, without whose support, encouragement, patience, and understanding, this book would never have been written. I would also like to thank my two wonderful daughters Kailey and Kara who have both been my inspiration and driving force since the days they were born.
About the Reviewer
Chuck Gaffney is the owner of the website/store and indie studio Chuck's Anime Shrine as well as Anime.FM. He is a programmer by trade, ranging from games, non-games, VR, AR, and mobile applications. He has worked with iOS native (Swift/Objective-C/XCode) code, Flash animation, and game development as well as web design. Recently, he has been working almost exclusively in Unity/C#, making mobile applications that work with games, non-games, AR, VR, and third-party API integrations.
Interestingly, he is also a professional voice actor with work in games, museum experiences, movie dubs, and more. He is the owner of the long running fan site, store, and indie game studio Chuck's Anime Shrine. He recently worked with two major NYC studios and with clients that include some financial giants and the Late Show with Steven Colbert. He is currently developing an app for a major beer company.
I would like to thank my fiancée Danielle for putting up with the late nights and all nighters that come with the territory of being a programmer, voice actor, and business owner.
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Preface
This book is about protocol-oriented programming. When Apple announced Swift 2 at the World Wide Developers Conference (WWDC) in 2015, they also declared that Swift was the world's first protocol-oriented programming language. By its name, we may assume that protocol-oriented programming is all about the protocol; however, that would be wrong assumption. Protocol-oriented programming is about so much more than just the protocol; it is actually a new way of not only writing applications, but thinking about programming as well.
One of the biggest misconceptions about protocol-oriented programming is that it is just another name for object-oriented programming. Chapter 1, Object-Oriented and Protocol-Oriented Programming, immediately takes on this myth by comparing protocol-oriented programming to object-oriented programming to see what is similar and what the differences are. We will also discuss the advantages and disadvantages of both programming paradigms.
From Chapter 2, Our Type Choices, to Chapter 5, Let's Extend Some Types, we will take an in-depth look at each of the components of the protocol-oriented programming paradigm. These chapters are designed to give the reader a solid understanding of the different components of protocol-oriented programming, so users will understand how they can use these components in their applications.
The last two chapters are written to help the reader understand how they can design their application in a protocol-oriented programming way. Chapter 6, Adopting Design Patterns in Swift, looks at how we would implement several design patterns in a protocol-oriented way and Chapter 7, Case Studies, looks at three real-world case studies to reinforce everything previously discussed in the book.
What this book covers
Chapter 1, Object-Oriented and Protocol-Oriented Programming, will show the differences between object-oriented programming and protocol-oriented programming, giving the reader a good understanding of the different paradigms. By the end of the chapter, the reader should have a basic understanding of protocol-oriented programming and what it offers.
Chapter 2, Our Type Choices, will look at the different types that Swift offers (structs, classes, enums, and tuples). We will show several examples of when to use the various types and when not to.
Chapter 3, Catching Our Errors, will look at the various ways we can catch and report errors. This chapter will not only cover the new Swift 2 do-try-catch blocks, but also the older error handling patterns.
Chapter 4, All about the Protocol, will be all about the protocol. We will show the advantages of using protocols and why, in our design, we should start with the protocol.
Chapter 5, Let's Extend Some Types, will cover extensions in great detail. We will look at how to extend standard Swift types, such as structures and classes. We will also look at protocol extensions and discuss why they are so important in protocol-oriented programming.
Chapter 6, Adopting Design Patterns in Swift, will be implementing several design patterns using protocol-oriented programming. For each of the design patterns, we will look at the problem they are designed to solve and how to implement the pattern.
Chapter 7, Case Studies, will explore three case studies. This chapter is designed to pull everything from the first six chapters together to show the reader how to use protocol-oriented programming with design patterns in real-world situations.
What you need for this book
To follow along with the examples in this book, the reader will need to have an Apple computer with OS X 10.10 or higher installed. They will also need to install Xcode version 7.0 or higher with Swift version 2 or higher and have at least basic knowledge of the Swift programming language.
The examples, as they are shown in this book, should work with the Linux port of the Swift language however the downloadable code for this book requires Xcode which is only available on the Apple platform.
Who this book is for
This book is for Swift developers who have at least an introductory knowledge of the Swift programming language, who want to learn and implement protocol-oriented programming in their real-world applications. It is also for developers who not only want to understand protocol-oriented programming, but also want to fully understand the different components of the programming paradigm. This book is written for developers who learn best by looking at and working with code, because every concept covered in the book is backed by example code written to give the reader a solid understanding of the current topic and to demonstrate how to properly implement it.
Conventions
In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.
Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "We can include other contexts through the use of the include directive."
A block of code is set as follows:
New terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "The answer to this question is polymorphism.".
Note
Warnings or important notes appear in a box like this.
Tip
Tips and tricks appear like this.
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Errata
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Questions
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