range/algorithm/unique.hpp

0001 //  Copyright Neil Groves 2009. Use, modification and
0002 //  distribution is subject to the Boost Software License, Version
0003 //  1.0. (See accompanying file LICENSE_1_0.txt or copy at
0004 //  http://www.boost.org/LICENSE_1_0.txt)
0005 //
0006 //
0007 // For more information, see http://www.boost.org/libs/range/
0008 //
0009 #ifndef BOOST_RANGE_ALGORITHM_UNIQUE_HPP_INCLUDED
0010 #define BOOST_RANGE_ALGORITHM_UNIQUE_HPP_INCLUDED
0011
0012 #include <boost/concept_check.hpp>
0013 #include <boost/range/begin.hpp>
0014 #include <boost/range/end.hpp>
0015 #include <boost/range/concepts.hpp>
0016 #include <boost/range/detail/range_return.hpp>
0017 #include <algorithm>
0018
0019 namespace boost
0020 {
0021     namespace range
0022     {
0023
0024 /// \brief template function unique
0025 ///
0026 /// range-based version of the unique std algorithm
0027 ///
0028 /// \pre Rng meets the requirements for a Forward range
0029 template< range_return_value re, class ForwardRange >
0030 inline BOOST_DEDUCED_TYPENAME range_return<ForwardRange,re>::type
0031 unique( ForwardRange& rng )
0032 {
0033     BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> ));
0034     return range_return<ForwardRange,re>::
0035         pack( std::unique( boost::begin(rng),
0036                            boost::end(rng)), rng );
0037 }
0038
0039 /// \overload
0040 template< range_return_value re, class ForwardRange >
0041 inline BOOST_DEDUCED_TYPENAME range_return<const ForwardRange,re>::type
0042 unique( const ForwardRange& rng )
0043 {
0044     BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> ));
0045     return range_return<const ForwardRange,re>::
0046         pack( std::unique( boost::begin(rng),
0047                            boost::end(rng)), rng );
0048 }
0049 /// \overload
0050 template< range_return_value re, class ForwardRange, class BinaryPredicate >
0051 inline BOOST_DEDUCED_TYPENAME range_return<ForwardRange,re>::type
0052 unique( ForwardRange& rng, BinaryPredicate pred )
0053 {
0054     BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> ));
0055     return range_return<ForwardRange,re>::
0056         pack(std::unique(boost::begin(rng), boost::end(rng), pred),
0057              rng);
0058 }
0059 /// \overload
0060 template< range_return_value re, class ForwardRange, class BinaryPredicate >
0061 inline BOOST_DEDUCED_TYPENAME range_return<const ForwardRange,re>::type
0062 unique( const ForwardRange& rng, BinaryPredicate pred )
0063 {
0064     BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> ));
0065     return range_return<const ForwardRange,re>::
0066         pack(std::unique(boost::begin(rng), boost::end(rng), pred),
0067              rng);
0068 }
0069
0070 /// \overload
0071 template< class ForwardRange >
0072 inline BOOST_DEDUCED_TYPENAME range_return<ForwardRange, return_begin_found>::type
0073 unique( ForwardRange& rng )
0074 {
0075     BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> ));
0076     return ::boost::range::unique<return_begin_found>(rng);
0077 }
0078 /// \overload
0079 template< class ForwardRange >
0080 inline BOOST_DEDUCED_TYPENAME range_return<const ForwardRange, return_begin_found>::type
0081 unique( const ForwardRange& rng )
0082 {
0083     BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> ));
0084     return ::boost::range::unique<return_begin_found>(rng);
0085 }
0086 /// \overload
0087 template< class ForwardRange, class BinaryPredicate >
0088 inline BOOST_DEDUCED_TYPENAME range_return<ForwardRange, return_begin_found>::type
0089 unique( ForwardRange& rng, BinaryPredicate pred )
0090 {
0091     BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> ));
0092     return ::boost::range::unique<return_begin_found>(rng, pred);
0093 }
0094 /// \overload
0095 template< class ForwardRange, class BinaryPredicate >
0096 inline BOOST_DEDUCED_TYPENAME range_return<const ForwardRange, return_begin_found>::type
0097 unique( const ForwardRange& rng, BinaryPredicate pred )
0098 {
0099     BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> ));
0100     return ::boost::range::unique<return_begin_found>(rng, pred);
0101 }
0102
0103     } // namespace range
0104     using range::unique;
0105 } // namespace boost
0106
0107 #endif // include guard