Forward declaring standard library classes

[Paolo Carlini]

Theodore Papadopoulo wrote:

>In each container add a :
>typedef {true_type,false_type} swappable;
>
People, while working on such (very interesting!) ideas, are you
aware of the closely related proposal from Dhruv? I think this
is the latest version:

    http://gcc.gnu.org/ml/libstdc++/2004-07/msg00076.html

Paolo.

P.S. ... but I sincerely hope that you can work out something
simpler, as a start... ;)