the swift programming language

苹果新发布的开发语言swift，这是最全的版本，463页，很好的资源~英文版 Swift is a new programming language for creating iOS and OS X apps. Swift builds on the best of C and Objective-C, without the constraints of C compatibility. Swift adopts safe programming patterns and adds modern features to make programming easier, more flexible, and more fun. Swift’s clean slate, backed by the mature and much-loved Cocoa and Cocoa Touch frameworks, is an opportunity to reimagine how software development works., This book provides:, - A tour of the language., - A detailed guide delving into each language feature., - A formal reference for the language.