Re: [Boost-users] mpl programming task

or even more clear: #include <map> #include <set> typedef std::map CInt2IntMap; typedef std::set CIntSet; static CInt2IntMap convert(const CIntSet &_r) { CInt2IntMap s; for (CIntSet::const_iterator p = _r.begin(); p != _r.end(); ++p) s.insert(std::make_pair(*p, s.size())); return s; }