Method format_custom_arg

ext/include/cppformat/format.h:701–706

  // Formats an argument of a custom type, such as a user-defined class.
  template <typename T>
  static void format_custom_arg(
      void *formatter, const void *arg, void *format_str_ptr) {
    format(*static_cast<BasicFormatter<Char>*>(formatter),
           *static_cast<const Char**>(format_str_ptr),
           *static_cast<const T*>(arg));
  }

public:
  MakeValue() {}