[boost] Re: GUI/GDI template library

From: David Abrahams (dave_at_[hidden])
Date: 2003-08-01 09:04:27

"Douglas Gregor" <gregod_at_[hidden]> writes:

>     3) There is an alternative solution: Boost.Threads presents a single,
> non-template interface to the user and hides all of the platform-specific
> details using the pImpl idiom. The same approach can be applied here, and I
> think we'll find that it has all of the same advantages.

Not quite.  pImpl is really bad when you have multiple interacting
concrete types.  I think you'll find yourself doing a lot of
polymorphic_downcast<>s.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com