std::is_member_object_pointer
Min standard notice:
Header: <type_traits>
std::is_member_object_pointer is a UnaryTypeTrait.
# Declarations
template< class T >
struct is_member_object_pointer;
(since C++11)
# Example
#include <iostream>
#include <type_traits>
int main()
{
class C {};
std::cout << "Is member object pointer?\n" << std::boolalpha
<< std::is_member_object_pointer_v<int(C::*)>
<< ": int(C::*)\n"
<< std::is_member_object_pointer_v<int(C::*)()>
<< ": int(C::*)()\n";
}