Jon Hoffman - Swift 4 Protocol-Oriented Programming

BIRMINGHAM - MUMBAI

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First published: February 2016

Second edition: November 2016

Third edition: October 2017

Production reference: 1031017

ISBN 978-1-78847-003-2

www.packtpub.com

Jon Hoffman has over 25 years of experience in the field of information technology. Over these 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 developed extensively for the iOS platform since 2008. This includes several apps that he has published in the App Store, apps that he has written for third parties, and numerous enterprise applications. He has also developed mobile applications for the Android and Windows platforms. What really drives Jon the challenges that the field of information technology provides and there is nothing more exhilarating to him than overcoming a challenge.

Some of Jons other interests are spending time with his family, robotic projects, and 3D printing. 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 Kara is currently working towards her black belt.

Andrea Prearo is a software engineer with over 15 years of experience. He is originally from Italy, and after a decade of writing software in C/C++ and C#, he moved to the Bay Area in 2011 to start developing mobile apps.

In the last few years, he has been focusing on Swift, Objective-C, iOS, and microservices, with some short explorations of the Android platform. Currently, he is a member of the iOS dev team at Capital One, working on the company's flagship mobile banking app.

His interests include reading books, watching movies, and hiking. From time to time, he also blogs about tech at https://medium.com/@andrea.prearo.

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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 a 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 also how we think about programming.

In the first four chapters, we 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 he/she will understand how they can use these components in their applications.
One of the biggest misconceptions about protocol-oriented programming is that it is just another name for object-oriented programming. In , Protocol-Oriented Programming we take on this myth by comparing protocol-oriented programming to object-oriented programming to see what is similar and what is different. We also discuss the advantages and disadvantages of both programming paradigms.

The last two chapters are written to help the reader understand how they can design their application in a protocol-oriented programming way. ,