2009/1/14 Germán Diago <germandiago@gmail.com>
What's wrong with this code? When I push_back ptr to the vector, it pushes 0 instead of the value contained in ptr (which I checked and is non-zero).
Try this: std::vector<boost::shared_ptr<BaseClass> > baseobjects = get_base_objects(path); std::vector<boost::shared_ptr<DerivedClass> > result(get_base_objects.size()); BOOST_FOREACH (boost::shared_ptr<BaseClass> en, baseobjects) { boost::shared_ptr<DerivedClass> ptr = boost::dynamic_pointer_cast<DerivedClass>(en); if (!ptr) std::cout << "Dynamic cast failed!" << std::endl; result.push_back(ptr); if (!result.back()) std::cout << "Push back failed!" << std::endl; } And check what it prints. Roman Perepelitsa.