Despite the fact that it's not official STL, it is included with gcc. If you look in the standard spot (..../include/g++-v3), you won't find them, but if you look in (..../include/g++-v3/ext), you'll find them. Brian On Thu, 10 Mar 2005 07:06:45 -0600, Eljay Love-Jensen <eljay@xxxxxxxxx> wrote: > Hi Xiaoshan, > > >I'am doing some work that equires me to use the stl's hash_map and hash_set > > There is no STL hash_map and hash_set. > > I recommend using BOOST <www.boost.org>, which is a group working to expand > STL and other general purpose tools for C++2008 (or thereabouts). Without > looking, I'm guessing they have a hash_map and hash_set you could use. > > Quite a few of the BOOST contributors are also C++ committee members. > > HTH, > --Eljay > >