About the authors

Florent Vilmart, M.Sc., is a full stack engineer in Montreal. Born in France, he moved to Montreal shortly before graduating, seeking exciting opportunities in the francophone metropole of North America. He honed his skills with Objective-C before jumping to Swift when it was released. He is a polyglot, and you can find his open source work on the parse community GitHub project, where he is one of the core maintainers. He has spoken at conferences, including the GitHub CodeConf in 2016 and, most recently, the 2017 Swift Summit in San Francisco. Currently, he is working full-time with BusBud in Montreal, using mainly TypeScript alongside Swift.

Writing a first book is a daunting challenge, even more so when you have three children to take care of at the same time. I want to start by thanking Elodie, my life partner, without whom writing this book would never have been possible. She has provided both support and encouragement during the process. Elodie, thank you many times over.

Many thanks to Francis at Packt Publishing for keeping my spirits up in the darkest days, always encouraging and looking forward.

I also wish to thank all the leaders and makers of the Swift community that I had the chance to meet in person or online, many of whom are a source of inspiration through their open source work, blogs, and conferences. Without such a vibrant community, this book would not have been possible.

Many thanks are due to my mom and dad. They both taught me that anything and everything is possible in this world, and my brothers, with whom I had the best time and who helped me to disconnect and take a step back when I needed it the most.

Giordano Scalzo is a developer with 20 years of programming experience, since the days of the ZX-Spectrum. He has worked in C++, Java, .NET, Ruby, Python, and in a multitude of other languages. After years of backend development, Giordano has developed extensively for iOS, releasing more than 20 apps which he wrote for clients, enterprise applications, or for his own benefit. Currently, he is a contractor in London where, through his company, Effective Code Ltd., he delivers code for iOS. For Packt, he has written two books on Swift, Swift by Example and Swift 2 by Example, and has reviewed a number of Swift books and videos, including Learn Swift by Building Applications, Introduction to Server-Side Swift, and Swift Functional Programming.

I'd like to thank my better half, Valentina, who lovingly supports me in everything I do: without you, none of this would have been possible. Thanks to my bright future, Mattia and Luca, for giving me lots of smiles and hugs when I needed them. Thanks to Francis, for making this book better. Finally, my gratitude goes to my mom and my dad, who piqued my curiosity and supported me in the pursuit of my passions, which begun one day when they bought me a ZX-Spectrum.

Sergio De Simone has been working as a software engineer for over twenty years across a range of different projects and companies, including work environments such as Siemens, HP, and small start-ups. For the last few years, his focus has been on developing mobile platforms and related technologies. He is currently working for BigML, Inc., where he leads iOS and OS X development. Additionally, he likes writing about technology, as well as programming tools, techniques, and languages, with a special focus on Swift evolution, for InfoQ.

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