3 Defines `boost::hana::detail::variadic::reverse_apply_flat`.
5 @copyright Louis Dionne 2013-2017
6 Distributed under the Boost Software License, Version 1.0.
7 (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
10 #ifndef BOOST_HANA_DETAIL_VARIADIC_REVERSE_APPLY_FLAT_HPP
11 #define BOOST_HANA_DETAIL_VARIADIC_REVERSE_APPLY_FLAT_HPP
13 #include <boost/hana/config.hpp>
14 #include <boost/hana/detail/variadic/at.hpp>
19 BOOST_HANA_NAMESPACE_BEGIN namespace detail { namespace variadic {
20 template <int ...i, typename F, typename ...X>
21 constexpr decltype(auto)
22 reverse_apply_flat_helper(std::integer_sequence<int, i...>, F&& f, X&& ...x)
24 return static_cast<F&&>(f)(
25 detail::variadic::at<sizeof...(x) - i - 1>(
26 static_cast<X&&>(x)...
31 template <typename F, typename ...X>
32 constexpr decltype(auto) reverse_apply_flat(F&& f, X&& ...x) {
33 return reverse_apply_flat_helper(
34 std::make_integer_sequence<int, sizeof...(x)>{},
36 static_cast<X&&>(x)...
39 }} BOOST_HANA_NAMESPACE_END
41 #endif // !BOOST_HANA_DETAIL_VARIADIC_REVERSE_APPLY_FLAT_HPP