[Boost-users] Key iterators

I'm just getting into boost and I really like it. I would like to iterate over keys of a multimap. so it would look like this: std::multimap::key_iterator i = map.beginkey(); i != map.endkey(); i++ at each i++ it would move to the next key. -or- for_each(map.beginkey(), map.endkey(), whatever); Is this possible with the boost iterators? Thanks, Chris