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/// \file
// Range v3 library
//
// Copyright Eric Niebler 2013-present
//
// Use, modification and distribution is subject to the
// Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// Project home: https://github.com/ericniebler/range-v3
//
#ifndef RANGES_V3_ACTION_TRANSFORM_HPP
#define RANGES_V3_ACTION_TRANSFORM_HPP
#include <range/v3/range_fwd.hpp>
#include <range/v3/action/action.hpp>
#include <range/v3/algorithm/transform.hpp>
#include <range/v3/functional/bind_back.hpp>
#include <range/v3/functional/identity.hpp>
#include <range/v3/iterator/concepts.hpp>
#include <range/v3/iterator/traits.hpp>
#include <range/v3/utility/static_const.hpp>
#include <range/v3/detail/prologue.hpp>
namespace ranges
{
/// \addtogroup group-actions
/// @{
namespace actions
{
struct transform_fn
{
template(typename F, typename P = identity)(
requires (!range<F>))
constexpr auto operator()(F fun, P proj = P{}) const
{
return make_action_closure(
bind_back(transform_fn{}, std::move(fun), std::move(proj)));
}
template(typename Rng, typename F, typename P = identity)(
requires input_range<Rng> AND copy_constructible<F> AND
indirectly_writable<
iterator_t<Rng>,
indirect_result_t<F &, projected<iterator_t<Rng>, P>>>)
Rng operator()(Rng && rng, F fun, P proj = P{}) const
{
ranges::transform(rng, begin(rng), std::move(fun), std::move(proj));
return static_cast<Rng &&>(rng);
}
};
/// \relates actions::transform_fn
RANGES_INLINE_VARIABLE(transform_fn, transform)
} // namespace actions
/// @}
} // namespace ranges
#include <range/v3/detail/epilogue.hpp>
#endif
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