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52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
// Copyright Neil Groves 2009. Use, modification and
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// distribution is subject to the Boost Software License, Version
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// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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//
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// For more information, see http://www.boost.org/libs/range/
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//
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#ifndef BOOST_RANGE_ALGORITHM_ROTATE_HPP_INCLUDED
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#define BOOST_RANGE_ALGORITHM_ROTATE_HPP_INCLUDED
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#include <boost/concept_check.hpp>
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#include <boost/range/begin.hpp>
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#include <boost/range/end.hpp>
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#include <boost/range/concepts.hpp>
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#include <algorithm>
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namespace boost
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{
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namespace range
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{
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/// \brief template function rotate
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///
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/// range-based version of the rotate std algorithm
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///
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/// \pre Rng meets the requirements for a Forward range
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template<class ForwardRange>
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inline ForwardRange& rotate(ForwardRange& rng,
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BOOST_DEDUCED_TYPENAME range_iterator<ForwardRange>::type middle)
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{
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BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> ));
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std::rotate(boost::begin(rng), middle, boost::end(rng));
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return rng;
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}
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/// \overload
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template<class ForwardRange>
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inline const ForwardRange& rotate(const ForwardRange& rng,
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BOOST_DEDUCED_TYPENAME range_iterator<const ForwardRange>::type middle)
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{
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BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> ));
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std::rotate(boost::begin(rng), middle, boost::end(rng));
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return rng;
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}
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} // namespace range
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using range::rotate;
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} // namespace boost
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#endif // include guard
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