Class test_visitor_two

test_visit_struct.cpp:103–110

using ppair = std::pair<const char * , const void *>;

struct test_visitor_two {
  std::vector<ppair> result;

  template <typename T>
  void operator()(const char * name, const T & t) {
    result.emplace_back(ppair{name, static_cast<const void *>(&t)});
  }
};