Ion Gaztañaga wrote:
2. Add reinterpret_pointer_cast to complete cast family.
Out of curiosity, why do you want it?
Well, currently I'm removing reinterpret_casts to convert void pointers with static_casts, but if there is some place where a reinterpret_cast has sense with raw pointers, I would add it to have complete family. But we can live with static_pointer_cast.
We actually do have a motivating example for reinterpret_pointer_cast: function pointer casts, where you can't use void. Something like shared_ptr<void()> get_function( char const * module, char const * name ); I think that it was Vladimir Prus that came up with this use case... Yes, it was him: http://lists.boost.org/Archives/boost/2004/08/70705.php Thanks for reminding me. Another candidate for a TR1 extension proposal.
template<class T, class U, template<class> class Sp> class pointer_to_other< Sp<T>, U > { typedef Sp<U> type; };
works with auto_ptr and all boost smart pointers. Other smart pointers may want to specialize pointer_to_other.
No problem at all. What about other overloads for 2 and 3 template parameter smart pointers, so that almost all smart pointers would be covered. Of course, we need another version for raw pointers. What about boost/utility/pointer_to_other.hpp?
No objections here, but what about documentation and tests? :-)