Hi,
the document says that 'value_at_c' accepts a Forward Sequence, and
set/map, which is of Associative Sequence as well as Forward Sequence, why the following does not work?
#include <boost/fusion/include/value_at.hpp>
#include <boost/fusion/include/set.hpp>
int main()
{
namespace fs = boost::fusion;
typedef fs::result_of::value_at_c<fs::set<int>, 0> >::type type;
return 0;
}