Preface
About a year ago, noticing that Apple had not updated Objective-C much over the past few years, I got intimations that they were working on a new language or framework for iOS development, and even suggested it to my friends at work. They laughed and said, “Then you will have to write your book from scratch.” They were right; this edition is almost a whole new book.
The previous edition of the book had already seemed like a very big job because I added so many recipes as well as updated all the Objective-C code for iOS 7. But the task was dwarfed by this edition, where everything had to be rewritten in Swift. Furthermore, so many recipes are new that I have lost count. I can affirm that this edition of the book is the most extensive effort since my initial effort to write the first edition. All the code has been written in Swift. Not just translated line by line, but rewritten to take advantage of awesome features in Swift, like extensions.
None of us quite expected Swift to come out from Apple’s Worldwide Developers Conference (WWDC) 2014. We thought it would be a normal WWDC with tons of new APIs and just some additions to Objective-C like previous years at WWDC. But we were all surprised. At least I was.
I think Swift is a great language and has been needed for iOS development for a long time. Those of us who grew up with the first iOS SDK or—as it was called back then—the iPhone SDK, know how painful it was to do reference counting manually. Explaining those concepts in ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access