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Sprout/sprout/operation/fixed/pop_back_n.hpp

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1.3 KiB
C++

#ifndef SPROUT_OPERATION_FIXED_POP_BACK_N_HPP
#define SPROUT_OPERATION_FIXED_POP_BACK_N_HPP
#include <cstddef>
#include <sprout/config.hpp>
#include <sprout/index_tuple.hpp>
#include <sprout/container/traits.hpp>
#include <sprout/container/functions.hpp>
#include <sprout/operation/fixed/erase_n.hpp>
namespace sprout {
namespace fixed {
namespace result_of {
//
// pop_back_n
//
template<std::size_t N, typename Container>
struct pop_back_n
: public sprout::fixed::result_of::erase_n<N, Container>
{};
} // namespace result_of
//
// pop_back_n
//
template<std::size_t N, typename Container>
SPROUT_CONSTEXPR inline typename sprout::fixed::result_of::pop_back_n<N, Container>::type pop_back_n(
Container const& cont
)
{
return sprout::fixed::detail::erase_n_impl<N, typename sprout::fixed::result_of::pop_back_n<N, Container>::type>(
cont,
typename sprout::index_range<0, sprout::container_traits<typename sprout::fixed::result_of::pop_back_n<N, Container>::type>::static_size>::type(),
sprout::internal_end_offset(cont) - N
);
}
} // namespace fixed
namespace result_of {
using sprout::fixed::result_of::pop_back_n;
} // namespace result_of
using sprout::fixed::pop_back_n;
} // namespace sprout
#endif // #ifndef SPROUT_OPERATION_FIXED_POP_BACK_N_HPP