::remove_member_pointer

#include <type_traits>
#include <utility>

namespace details {

  template<typename Type>
  struct remove_member_pointer {
    using type = Type;
  };

  template<typename Member, typename Class>
  struct remove_member_pointer<Member Class::*> {
    using type = Member;
  };

}

template<typename Type>
struct remove_member_pointer {
  using type = typename details::remove_member_pointer<Type>::type;
};

template<typename Type>
using remove_member_pointer_t = typename remove_member_pointer<Type>::type;