Some guys asked me how-to rush into development of Objective-c 2.0.

Honestly speaking, I don’t like and don’t believe that there is some highway for programming. Deep understanding and mastering toolkit, is not just to avoid issues , but also a kind of respect of masters of great toolkit and language.

Compared with, will be better choice to give you a first sight for objective-c.

It’s already a long history for Mac [NextStep]… Coding with respects, I think I need to change my signatures like this.