38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
|
/*!
|
||
|
|
@file
|
||
|
|
Defines `boost::hana::reverse_fold`.
|
||
|
|
|
||
|
|
@copyright Louis Dionne 2013-2016
|
||
|
|
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>
|
||
|
|
|
||
|
|
|
||
|
|
BOOST_HANA_NAMESPACE_BEGIN
|
||
|
|
//! @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
|
||
|
|
BOOST_HANA_NAMESPACE_END
|
||
|
|
|
||
|
|
#endif // !BOOST_HANA_REVERSE_FOLD_HPP
|