Function flat_map

src/rpp/rpp/operators/flat_map.hpp:68–71

    template<typename Fn>
        requires (!utils::is_not_template_callable<Fn> || rpp::constraint::observable<std::invoke_result_t<Fn, rpp::utils::convertible_to_any>>)
    auto flat_map(Fn&& callable)
    {
        return details::flat_map_t<std::decay_t<Fn>>{std::forward<Fn>(callable)};
    }

} // namespace rpp::operators