Provided by: libstdc++-8-doc_8.4.0-1ubuntu1~18.04_all 

NAME
std::_Placeholder< _Num > - The type of placeholder objects defined by libstdc++.
SYNOPSIS
Detailed Description
template<int _Num>
struct std::_Placeholder< _Num >" The type of placeholder objects defined by libstdc++.
Definition at line 199 of file functional.
Author
Generated automatically by Doxygen for libstdc++ from the source code.
libstdc++ Tue Mar 10 2020 std::_Placeholder< _Num >(3cxx)