That's the end of our tour around the Swift programming language. I haven't tried to cover everything in the language, but that's OK because you have all the important stuff, all the sometimes-important stuff, and all the nice-to-know stuff – the many other features you'll either come across in a later project or through extended experience with the language.
From here on, we’re going to focus primarily on building apps. If you want to learn more about the Swift language itself, you might want to consider my Pro Swift book.
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Paul Hudson is the creator of Hacking with Swift, the most comprehensive series of Swift books in the world. He's also the editor of Swift Developer News, the maintainer of the Swift Knowledge Base, and Mario Kart world champion. OK, so that last part isn't true. If you're curious you can learn more here.
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