Advanced Swift Cover advanced swift, third edition – ole begemann - advanced swift 3 - Advanced Swift, third edition – Ole Begemann

Today we’re releasing the third of our book Advanced Swift, updated for 4.

Swift is the book for people who have read Apple’s The Swift Programming Language and/or have been using Swift for some time and now want to dig deeper and really understand how everything works. It’s a book about Swift the language, not about iOS or macOS programming (though we do use Apple’s frameworks in some examples).

The new edition has been thoroughly updated and expanded for Swift 4. The highlights:

  • An entire new chapter on encoding and decoding.
  • The Functions chapter has a brand-new section on key paths, plus more about subscripts, property observers, lazy properties, and escaping vs. non-escaping closures.
  • The Strings chapter grew by more than 40%, with lots of new examples and more in-depth explanations.
  • The Collection Protocols chapter is easier to follow now.
  • We explain partial ranges in Built-in Collections (though not all ranges are collections).
  • The Interoperability chapter now includes a step-by-step guide how to set up a C library for use with the Swift Package Manager.

Plus a ton of small revisions and additions throughout the book. All in all, the book is approximately 20% longer than last year’s edition (from 376 to 458 pages for the paperback).

The e-book download of Advanced Swift also includes the full text of the book in the form of Xcode playgrounds (one playground per chapter). This you can read the book on your Mac and with the sample code directly inline.


Screenshot of the Strings chapter of Advanced Swift in an Xcode 9.1 playground advanced swift, third edition – ole begemann - advanced swift playground screenshot xcode 2212px - Advanced Swift, third edition – Ole Begemann
Advanced Swift in an Xcode playground.

Last year, we only offered a playground for the Swift Playgrounds app on iOS because the iOS app’s playground book file format allowed us to hide helper code that didn’t appear in the book but was necessary to run the examples. Xcode’s playground file format doesn’t support this — at least not in a way that’s easy for us to adopt. As a consequence, you’ll come across blocks of utility code (marked as hidden with comments but fully visible). Feel free to ignore these.

Ultimately, while the iPad is a great match for reading a book, we feel that having the code available on your Mac is worth the slight inconvenience. And you can still use the playgrounds on your iPad if you wish. Just copy the .playground files to iCloud Drive and open them in the Swift Playgrounds app.

You can buy the e-book at objc.io. The e-book download includes PDF, ePub, and Mobi (Kindle) files, all DRM-free. This version also includes the Xcode playgrounds. If you have bought any of the previous editions of the e-book, this is a free update for you.

If you prefer a printed book, you can order the paperback on Amazon (amazon.com, amazon.de, amazon.co.uk).


Working on Advanced Swift has become an annual highlight for me. I enjoy the work very much, and while there’s obviously never enough time to make everything perfect, I’m very proud of the result. If you decide to buy the book, thank you! I hope you enjoy it.



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