Function format

include/fmt/format.h:4064–4066

template <typename Locale, typename... T, FMT_ENABLE_IF(detail::is_locale<Locale>::value)>
inline auto format(const Locale& loc, format_string<T...> fmt, T&&... args) -> std::string {
    return fmt::vformat(loc, string_view(fmt), fmt::make_format_args(args...));
}

template <typename OutputIt, typename Locale,
          FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value&& detail::is_locale<Locale>::value)>