Chris@16: //  Copyright Neil Groves 2009. Use, modification and
Chris@16: //  distribution is subject to the Boost Software License, Version
Chris@16: //  1.0. (See accompanying file LICENSE_1_0.txt or copy at
Chris@16: //  http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: //
Chris@16: // For more information, see http://www.boost.org/libs/range/
Chris@16: //
Chris@16: #ifndef BOOST_RANGE_ALGORITHM_RANDOM_SHUFFLE_HPP_INCLUDED
Chris@16: #define BOOST_RANGE_ALGORITHM_RANDOM_SHUFFLE_HPP_INCLUDED
Chris@16: 
Chris@16: #include <boost/concept_check.hpp>
Chris@16: #include <boost/range/begin.hpp>
Chris@16: #include <boost/range/end.hpp>
Chris@16: #include <boost/range/concepts.hpp>
Chris@16: #include <algorithm>
Chris@16: 
Chris@16: namespace boost
Chris@16: {
Chris@16:     namespace range
Chris@16:     {
Chris@16: 
Chris@16: /// \brief template function random_shuffle
Chris@16: ///
Chris@16: /// range-based version of the random_shuffle std algorithm
Chris@16: ///
Chris@16: /// \pre RandomAccessRange is a model of the RandomAccessRangeConcept
Chris@16: /// \pre Generator is a model of the UnaryFunctionConcept
Chris@16: template<class RandomAccessRange>
Chris@16: inline RandomAccessRange& random_shuffle(RandomAccessRange& rng)
Chris@16: {
Chris@16:     BOOST_RANGE_CONCEPT_ASSERT(( RandomAccessRangeConcept<RandomAccessRange> ));
Chris@16:     std::random_shuffle(boost::begin(rng), boost::end(rng));
Chris@16:     return rng;
Chris@16: }
Chris@16: 
Chris@16: /// \overload
Chris@16: template<class RandomAccessRange>
Chris@16: inline const RandomAccessRange& random_shuffle(const RandomAccessRange& rng)
Chris@16: {
Chris@16:     BOOST_RANGE_CONCEPT_ASSERT(( RandomAccessRangeConcept<const RandomAccessRange> ));
Chris@16:     std::random_shuffle(boost::begin(rng), boost::end(rng));
Chris@16:     return rng;
Chris@16: }
Chris@16: 
Chris@16: /// \overload
Chris@16: template<class RandomAccessRange, class Generator>
Chris@16: inline RandomAccessRange& random_shuffle(RandomAccessRange& rng, Generator& gen)
Chris@16: {
Chris@16:     BOOST_RANGE_CONCEPT_ASSERT(( RandomAccessRangeConcept<RandomAccessRange> ));
Chris@16:     std::random_shuffle(boost::begin(rng), boost::end(rng), gen);
Chris@16:     return rng;
Chris@16: }
Chris@16: 
Chris@16: /// \overload
Chris@16: template<class RandomAccessRange, class Generator>
Chris@16: inline const RandomAccessRange& random_shuffle(const RandomAccessRange& rng, Generator& gen)
Chris@16: {
Chris@16:     BOOST_RANGE_CONCEPT_ASSERT(( RandomAccessRangeConcept<const RandomAccessRange> ));
Chris@16:     std::random_shuffle(boost::begin(rng), boost::end(rng), gen);
Chris@16:     return rng;
Chris@16: }
Chris@16: 
Chris@16:     } // namespace range
Chris@16:     using range::random_shuffle;
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #endif // include guard