- 2011-07-14 [Cocoa Design Pattern] 24.Bundle
- 2011-07-13 [Cocoa Design pattern] 23. Decorator
- 2011-07-12 [Cocoa Design Pattern] 22. Flyweight pattern
- 2011-06-17 [Cocoa Design Pattern]18ch. Responder Chain
- 2011-06-11 [Cocoa Design Pattern] 17ch. Outlet, Target, Action