meta-serdes.cxx

#include <iostream>
#include <string>
#include <tuple>

template <typename T>
std::ostream& operator << (std::ostream& os, T const& obj) {
  using std::operator <<;

  std::apply([&os](auto const& fst, auto const&... rest) {
    os << fst;
    ((os << ", " << rest), ...);
  }, obj.members());
  return os;
}

struct employee {
  std::string name;
  int salary;

  auto members() noexcept {
    return std::forward_as_tuple(name, salary);
  }
  auto members() const noexcept {
    return std::forward_as_tuple(name, salary);
  }
};

int main(int, char**) {
    employee e{"Steve Jobs", 1};

    std::cout << e << std::endl;
}