Provided by: libstdc++-8-doc_8.4.0-3ubuntu2_all 

NAME
std::hash< _Tp > - Primary class template hash.
SYNOPSIS
Detailed Description
template<typename _Tp> struct std::hash< _Tp >" Primary class template hash. Primary class template hash, usable for enum types only. Definition at line 142 of file system_error.
Author
Generated automatically by Doxygen for libstdc++ from the source code.