[boost] Re: graph visitor interface simplification

From: Dave Abrahams (abrahams_at_[hidden])
Date: 2000-01-27 21:57:10

> I think I've got a good solution for simplifying visitors.
> Instead of using inheritance to compose them, we could use
> a compile-time list. Like this:
>
> Cons<V1, Cons<V2, Nil> >
>
> Then inside the algorithms, it will run through the list and
> call process() for each visitor in the list.
>
> Of course, the user doesn't want to see Cons<...>, so
> we provide helpers for creating them, could even overload "+"
> for this purpose. Then you could write:
>
> depth_first_search(..., v1 + v2 + v3);

That's more like it ;)