69 lines
2.2 KiB
Plaintext
69 lines
2.2 KiB
Plaintext
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// 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_RANDOM_SHUFFLE_HPP_INCLUDED
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#define BOOST_RANGE_ALGORITHM_RANDOM_SHUFFLE_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 random_shuffle
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///
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/// range-based version of the random_shuffle std algorithm
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///
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/// \pre RandomAccessRange is a model of the RandomAccessRangeConcept
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/// \pre Generator is a model of the UnaryFunctionConcept
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template<class RandomAccessRange>
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inline RandomAccessRange& random_shuffle(RandomAccessRange& rng)
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{
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BOOST_RANGE_CONCEPT_ASSERT(( RandomAccessRangeConcept<RandomAccessRange> ));
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std::random_shuffle(boost::begin(rng), boost::end(rng));
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return rng;
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}
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/// \overload
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template<class RandomAccessRange>
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inline const RandomAccessRange& random_shuffle(const RandomAccessRange& rng)
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{
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BOOST_RANGE_CONCEPT_ASSERT(( RandomAccessRangeConcept<const RandomAccessRange> ));
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std::random_shuffle(boost::begin(rng), boost::end(rng));
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return rng;
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}
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/// \overload
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template<class RandomAccessRange, class Generator>
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inline RandomAccessRange& random_shuffle(RandomAccessRange& rng, Generator& gen)
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{
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BOOST_RANGE_CONCEPT_ASSERT(( RandomAccessRangeConcept<RandomAccessRange> ));
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std::random_shuffle(boost::begin(rng), boost::end(rng), gen);
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return rng;
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}
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/// \overload
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template<class RandomAccessRange, class Generator>
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inline const RandomAccessRange& random_shuffle(const RandomAccessRange& rng, Generator& gen)
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{
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BOOST_RANGE_CONCEPT_ASSERT(( RandomAccessRangeConcept<const RandomAccessRange> ));
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std::random_shuffle(boost::begin(rng), boost::end(rng), gen);
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return rng;
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}
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} // namespace range
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using range::random_shuffle;
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} // namespace boost
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#endif // include guard
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