63e88f80
 Hu Chunming
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/*!
@file
Defines `boost::hana::reverse_fold`.
Copyright Louis Dionne 2013-2022
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
*/
#ifndef BOOST_HANA_REVERSE_FOLD_HPP
#define BOOST_HANA_REVERSE_FOLD_HPP
#include <boost/hana/fwd/reverse_fold.hpp>
#include <boost/hana/config.hpp>
#include <boost/hana/fold_right.hpp>
#include <boost/hana/functional/flip.hpp>
namespace boost { namespace hana {
//! @cond
template <typename Xs, typename S, typename F>
constexpr decltype(auto) reverse_fold_t::operator()(Xs&& xs, S&& s, F&& f) const {
return hana::fold_right(static_cast<Xs&&>(xs),
static_cast<S&&>(s),
hana::flip(static_cast<F&&>(f)));
}
template <typename Xs, typename F>
constexpr decltype(auto) reverse_fold_t::operator()(Xs&& xs, F&& f) const {
return hana::fold_right(static_cast<Xs&&>(xs),
hana::flip(static_cast<F&&>(f)));
}
//! @endcond
}} // end namespace boost::hana
#endif // !BOOST_HANA_REVERSE_FOLD_HPP
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