| /* |
| Copyright (c) Marshall Clow 2011-2012. |
| |
| Distributed under 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) |
| */ |
| |
| /// \file copy_n.hpp |
| /// \brief Copy n items from one sequence to another |
| /// \author Marshall Clow |
| |
| #ifndef BOOST_ALGORITHM_COPY_N_HPP |
| #define BOOST_ALGORITHM_COPY_N_HPP |
| |
| #include <boost/config.hpp> |
| |
| namespace boost { namespace algorithm { |
| |
| /// \fn copy_n ( InputIterator first, Size n, OutputIterator result ) |
| /// \brief Copies exactly n (n > 0) elements from the range starting at first to |
| /// the range starting at result. |
| /// \return The updated output iterator |
| /// |
| /// \param first The start of the input sequence |
| /// \param n The number of elements to copy |
| /// \param result An output iterator to write the results into |
| /// \note This function is part of the C++2011 standard library. |
| template <typename InputIterator, typename Size, typename OutputIterator> |
| BOOST_CXX14_CONSTEXPR OutputIterator copy_n ( InputIterator first, Size n, OutputIterator result ) |
| { |
| for ( ; n > 0; --n, ++first, ++result ) |
| *result = *first; |
| return result; |
| } |
| }} // namespace boost and algorithm |
| |
| #endif // BOOST_ALGORITHM_COPY_IF_HPP |
