[Boost-users] Determine Parent Class from boost::any

May I know is there any way to determine parent class from boost::any? #include <iostream> #include class a { public: virtual ~a() {} }; class b : public a { }; bool is_class_a(const boost::any& any) { return boost::any_cast<a>(&any) != 0; } bool is_class_a_v2(const boost::any& any) { try { boost::any_cast<a>(any); return true; } catch(const boost::bad_any_cast &) { return false; } } int main() { std::cout<< is_class_a(b())<< std::endl; // return 0. but i wish to return 1. std::cout<< is_class_a(a())<< std::endl; // return 1. std::cout<< is_class_a_v2(b())<< std::endl; // return 0. but i wish to return 1. std::cout<< is_class_a_v2(a())<< std::endl; // return 1. }