On Wednesday 08 February 2006 17:41, Rene Rivera wrote:
There's no easy way for the boost.any code to work with polymorphic types as you expect since there's no current way to know what types are convertible at runtime. (Perhaps when there's a boost.reflect)
Actually you gave me the solution. It just happens that in my project there is a type registry ( a registry where different objects register information about their type, information including base types ) - not quite a complete reflection system but has the info i need. I'll have to use unsafe_any_cast witch i've seen that it's not in the public interface of boost.any but i'll just have to live with it ( and hope it will never change ). it goes something like this class A {}; //base calss class B: public A {}; // derived class int main() { B *b = new B(); //create derived class boost::any n(b); // place inside boost::any if( TypeManager::type( n.type() )->findBaseClass(a)) { A* a=unsafe_any_cast<A*>(n); } else throw ... } Thanks, Iulian -- I used to be an agnostic, but now I'm not so sure.