title: boost::unordered_map maintains order of insertion?
body: <p>I am looking for a container which provides std::map like interface but maintains the order in which elements are inserted. Since there will not be too many elements in the map, the lookup performance is not a big issue. Will <a href="http://www.boost.org/doc/libs/1_36_0/doc/html/boost/unordered_map.html" rel="nofollow noreferrer">boost::unordered_map</a>  work in this case? i.e. does it maintain the order of insertion. I am new to boost library and hence want to know what exactly meant by 'unordered' ?</p>