Hi, boost::fusion::vector<int> v(1); int x = boost::fusion::at_c<0>(v); This code is giving me the error: `at_c' is not a member of `boost::fusion'| The first line compiles fine. I have all the includes that are showed in fusion::vector documentation page. Which include (or anything else) am I missing ? Thank you for your attention, -- Mauricio Gomes Pensar Digital 55-11-8319-9610 (Brazil - mobile)