是一款Mac上实用的Objective-C转换 代码工具，可以方便的将Objective-C代码转换为 代码，修复了大量问题，增加了Core Foundation等库， 支持直接拖拽文件，简单易用，很实用的一款 工具。
ifor Mac 4.0 介绍
iSwift is the easiest way to convert your Objective-C code to Swift.
- Ultra fast: Automatic as-you-type conversion, so that you don't lose even a single second. Yep, instantly.
- Drag-and-drop: Drop your Objective-C source onto the app icon, import the file and have it instantly converted. Yep, just like that.
- Smart: Syntax highlighting, autocompletion, live syntax checking and error reporting, and lots of advanced editing options. (Powered by Peppermint)
- Friendly UI: A neat editor, your sources side-by-side and all that packed in a beautiful easy-to-use User interface. What more can you need?
- Sophisticated: iSwift tries to recognize, parse and convert all Objective-C code (2.0 too!) to valid Swift code.
- Added support for Swift 4
- Minor bug fixes and enhancements