Swift简介

Swift is
a new programming language for iOS and OS X apps that 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 imagine how software development
works.

Swift is
the first industrial-quality systems programming language that is as expressive
and enjoyable as a scripting language.

简单的说：

1. Swift
   用来写 iOS 和 OS X 程序。


2. Swift
   吸取了C和 Objective-C 的优点，且更加强大易用。


3. Swift
   可以使用现有的 Cocoa 和 Cocoa Touch 框架。


4. Swift
   兼具编译语言的高性能（Performance）和脚本语言的交互性（Interactive）。