std::hash< _Tp > - Primary class template hash.

       Generated automatically by Doxygen for libstdc++ from the source code.

                                                    libstdc++                             std::hash<_Tp>(3cxx)

template<typename_Tp>
       struct std::hash< _Tp >"Primary class template hash.

       Primary class template hash, usable for enum types only.

       std::hash< _Tp > - Primary class template hash.

       #include <functional>

       Inherits std::__hash_enum< _Tp, bool >.