Standard C++ Library Reference
<hash_map>
Defines the container template classes hash_map and hash_multimap and their supporting templates.
In Visual C++ .NET 2003, members of the <hash_map> and <hash_set> header files are no longer in the std namespace, but rather have been moved into the stdext namespace. See The stdext Namespace for more information.
For a list of all members of this header, see <hash_map> Members.
#include <hash_map>
See Also
Reference
Thread Safety in the Standard C++ LibraryStandard Template Library
Other Resources
<hash_map> MembersStandard C++ Library Header Files