“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”
Excerpt From: Vandad Nahavandipoor. “iOS 8 Swift Programming Cookbook.” iBooks. https://itun.es/us/eAUs4.l
iOS 8 Swift Programming Cookbook
原文：http://www.cnblogs.com/521tanshijia/p/4779819.html