"Terje Slettebų" <[EMAIL PROTECTED]> wrote in message 05e001c2c7b8$ebb14b50$cb6c6f50@pc">news:05e001c2c7b8$ebb14b50$cb6c6f50@pc... > > template<typename B, typename D> > struct helper > { > template<typename T> > static char check(D const volatile &, T); > static char (& check(B const volatile &, int))[2]; > > struct C > { > operator B const volatile &() const; > operator D const volatile &(); > }; > > static C getC(); > }; > > template<typename B, typename D> > struct is_base_and_derived > { > static const bool result = > sizeof(helper<B,D>::check(helper<B,D>::getC(), 0)) == 1; > }; > > // If strict interpretation, i.e. not its own base class > > template<typename T> > struct is_base_and_derived<T, T> > { > static const bool result = false; > }; >
Ironically this specialization has the same behavior as the primary template. Rani _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
