Provided by: libstdc++-9-doc_9.5.0-6ubuntu2_all 

NAME
std::_Placeholder< _Num > - The type of placeholder objects defined by libstdc++.
SYNOPSIS
#include <functional>
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++ std::_Placeholder< _Num >(3cxx)