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