Re: [boost] Re: Re: Proposal: Visitor

From: David Abrahams (david.abrahams_at_[hidden])
Date: 2002-07-09 05:20:20

From: "Itay" <itay_maman_at_[hidden]>

> Hi Mac,
>
> Templates and virtual functions do not mix. A virtual base class creates
a
> 'firewall' which, has the nice effect of allowing polymorphic objects to
> pass thru, but, on the other hands, it hides any concrete type
information.

I agree with your second statement, but not with your first. Andrei
Alexandrescu has written a pretty cool book which explores ways to mix them
effectively...

down-with-absolutism-ly y'rs,
dave