Re: [boost] [type_traits] is_base_of<B, D> should work when B is incomplete

Andrzej Krzemienski wrote:

This used to be an option, until we introduced the concept of Boost library dependencies.

If I include a header with an empty definition of boost::in_place_factory_base, I introduce a dependency between Boost.Optional and Boost.Utility.

This is not a problem at the moment because Optional already requires Utility: C:\Projects\boost-git\boost>dist\bin\boostdep optional Primary dependencies for optional: [...] utility: <boost/utility/compare_pointees.hpp> from <boost/optional/optional.hpp> and, besides, Utility is no longer the monster it once was.