20 General utilities library [utilities]

20.20 Formatting [format]

20.20.6 Arguments [format.arguments]

20.20.6.3 Class template basic_­format_­args [format.args]

namespace std {
  template<class Context>
  class basic_format_args {
    size_t size_;                               // exposition only
    const basic_format_arg<Context>* data_;     // exposition only

  public:
    basic_format_args() noexcept;

    template<class... Args>
      basic_format_args(const format-arg-store<Context, Args...>& store) noexcept;

    basic_format_arg<Context> get(size_t i) const noexcept;
  };
}