3 Defines `boost::hana::reverse_fold`.
5 @copyright Louis Dionne 2013-2016
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_REVERSE_FOLD_HPP
11 #define BOOST_HANA_REVERSE_FOLD_HPP
13 #include <boost/hana/fwd/reverse_fold.hpp>
15 #include <boost/hana/config.hpp>
16 #include <boost/hana/fold_right.hpp>
17 #include <boost/hana/functional/flip.hpp>
20 BOOST_HANA_NAMESPACE_BEGIN
22 template <typename Xs, typename S, typename F>
23 constexpr decltype(auto) reverse_fold_t::operator()(Xs&& xs, S&& s, F&& f) const {
24 return hana::fold_right(static_cast<Xs&&>(xs),
26 hana::flip(static_cast<F&&>(f)));
29 template <typename Xs, typename F>
30 constexpr decltype(auto) reverse_fold_t::operator()(Xs&& xs, F&& f) const {
31 return hana::fold_right(static_cast<Xs&&>(xs),
32 hana::flip(static_cast<F&&>(f)));
35 BOOST_HANA_NAMESPACE_END
37 #endif // !BOOST_HANA_REVERSE_FOLD_HPP