Talk:Decorator Pattern

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[edit] why not an interface?

The decorator uses an abstract base class - why not use an Interface instead, which would be leaner? Any good reason? Or just a preference? Tempel 08:11, 29 April 2008 (EDT)

[edit] what does the "+" and "-" mean in the graphic?

The diagram uses "+" and "-" prefixes. What do they mean? Please explain that in the article and then remove this paragraph here. Tempel 08:12, 29 April 2008 (EDT)

[edit] This is UML

The + and - stand for public and private. The third would be # which stands for protected. Perhaps I'm expecting too much but I thought that programmers should be able to read at least an uml-class diagram ;).