observer design pattern

[Remco Gerlich]

Rick Lee <rwklee at home.com> wrote in comp.lang.python:
> What Design Patterns book are you referring to?

Probably "Design Patterns: Elements of Reusable Object Oriented Software" by
Gamma, Helm, Johnson, Vlissides and Booch. A very good software engineering
book. Instant classic.

If you do any object oriented design or programming, you should read it.

-- 
Remco Gerlich