The book isn’t meant to be an introduction to Swift it assumes you’re familiar with the syntax and structure of the language. Additionally, it’s suitable for new programmers who started on Swift, have grown familiar with the basics, and are looking to take things to the next level. It’s also for those coming from other languages such as Java or C++ who want to bring their knowledge of Swift to the same level as that of their “go-to” language. This book targets experienced (though not necessarily expert) programmers, such as existing Apple-platform developers. Being familiar with the material presented is probably necessary, if not sufficient, for calling yourself an advanced Swift programmer. Hopefully, once you’ve read our book, you’ll have gone from being aware of the basics of the language to knowing about many advanced features and having a much better understanding of how Swift works. We intend to answer many of the “How do I do this?” or “Why does Swift behave like that?” questions we’ve seen come up again and again. Learning more about these features is what this book is about. But after a while, we think you’ll find it necessary to know about these things - whether to improve your code’s performance, or to make it more elegant or expressive, or just to get certain things done. You can certainly use Swift without ever calling into a C library or writing your own collection type. ![]() You can get up and running developing apps in Swift without needing to know about generics or overloading or how copy-on-write works under the hood. Swift is a complex language - most programming languages are. Advanced Swift is quite a bold title for a book, so perhaps we should start with what we mean by it.
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