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1 // Copyright Neil Groves 2009. Use, modification and
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2 // distribution is subject to the Boost Software License, Version
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3 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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4 // http://www.boost.org/LICENSE_1_0.txt)
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5 //
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6 //
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7 // For more information, see http://www.boost.org/libs/range/
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8 //
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9 #ifndef BOOST_RANGE_ALGORITHM_UNIQUE_HPP_INCLUDED
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10 #define BOOST_RANGE_ALGORITHM_UNIQUE_HPP_INCLUDED
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11
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12 #include <boost/concept_check.hpp>
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13 #include <boost/range/begin.hpp>
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14 #include <boost/range/end.hpp>
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15 #include <boost/range/concepts.hpp>
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16 #include <boost/range/detail/range_return.hpp>
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17 #include <algorithm>
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18
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19 namespace boost
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20 {
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21 namespace range
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22 {
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23
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24 /// \brief template function unique
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25 ///
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26 /// range-based version of the unique std algorithm
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27 ///
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28 /// \pre Rng meets the requirements for a Forward range
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29 template< range_return_value re, class ForwardRange >
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30 inline BOOST_DEDUCED_TYPENAME range_return<ForwardRange,re>::type
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31 unique( ForwardRange& rng )
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32 {
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33 BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> ));
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34 return range_return<ForwardRange,re>::
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35 pack( std::unique( boost::begin(rng),
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36 boost::end(rng)), rng );
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37 }
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38
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39 /// \overload
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40 template< range_return_value re, class ForwardRange >
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41 inline BOOST_DEDUCED_TYPENAME range_return<const ForwardRange,re>::type
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42 unique( const ForwardRange& rng )
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43 {
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44 BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> ));
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45 return range_return<const ForwardRange,re>::
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46 pack( std::unique( boost::begin(rng),
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47 boost::end(rng)), rng );
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48 }
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49 /// \overload
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50 template< range_return_value re, class ForwardRange, class BinaryPredicate >
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51 inline BOOST_DEDUCED_TYPENAME range_return<ForwardRange,re>::type
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52 unique( ForwardRange& rng, BinaryPredicate pred )
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53 {
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54 BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> ));
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55 return range_return<ForwardRange,re>::
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56 pack(std::unique(boost::begin(rng), boost::end(rng), pred),
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57 rng);
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58 }
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59 /// \overload
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60 template< range_return_value re, class ForwardRange, class BinaryPredicate >
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61 inline BOOST_DEDUCED_TYPENAME range_return<const ForwardRange,re>::type
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62 unique( const ForwardRange& rng, BinaryPredicate pred )
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63 {
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64 BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> ));
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65 return range_return<const ForwardRange,re>::
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66 pack(std::unique(boost::begin(rng), boost::end(rng), pred),
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67 rng);
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68 }
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69
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70 /// \overload
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71 template< class ForwardRange >
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72 inline BOOST_DEDUCED_TYPENAME range_return<ForwardRange, return_begin_found>::type
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73 unique( ForwardRange& rng )
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74 {
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75 BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> ));
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76 return ::boost::range::unique<return_begin_found>(rng);
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77 }
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78 /// \overload
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79 template< class ForwardRange >
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80 inline BOOST_DEDUCED_TYPENAME range_return<const ForwardRange, return_begin_found>::type
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81 unique( const ForwardRange& rng )
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82 {
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83 BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> ));
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84 return ::boost::range::unique<return_begin_found>(rng);
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85 }
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86 /// \overload
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87 template< class ForwardRange, class BinaryPredicate >
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88 inline BOOST_DEDUCED_TYPENAME range_return<ForwardRange, return_begin_found>::type
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89 unique( ForwardRange& rng, BinaryPredicate pred )
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90 {
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91 BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> ));
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92 return ::boost::range::unique<return_begin_found>(rng, pred);
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93 }
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94 /// \overload
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95 template< class ForwardRange, class BinaryPredicate >
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96 inline BOOST_DEDUCED_TYPENAME range_return<const ForwardRange, return_begin_found>::type
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97 unique( const ForwardRange& rng, BinaryPredicate pred )
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98 {
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99 BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> ));
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100 return ::boost::range::unique<return_begin_found>(rng, pred);
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101 }
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102
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103 } // namespace range
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104 using range::unique;
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105 } // namespace boost
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106
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107 #endif // include guard
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