12 Jul
2005
12 Jul
'05
9:07 a.m.
From: Felipe Magno de Almeida [mailto:felipe.m.almeida@gmail.com]
What I wanted is a vector of variant<object1, object2> and I dont want object1 and object2 to be copied because it is expensive. But Im not figuring out how to do this... tried boost::ref either with no success... :/
Boost.Smart_ptr (http://www.boost.org/libs/smart_ptr/smart_ptr.htm) can help: use boost::shared_ptr, which is a reference-counted smart pointer. typedef boost::variant<object1,object2> variant_type; std::vector<boost::shared_ptr<variant_type> > vec; boost::shared_ptr<variant_type> v(new variant_type(object1())); vec.push_back(v); // No copying of the variant Bjorn Karlsson