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_MAX_ELEMENT_HPP_INCLUDED |
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10 | #define BOOST_RANGE_ALGORITHM_MAX_ELEMENT_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 max_element |
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25 | /// |
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26 | /// range-based version of the max_element std algorithm |
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27 | /// |
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28 | /// \pre ForwardRange is a model of the ForwardRangeConcept |
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29 | /// \pre BinaryPredicate is a model of the BinaryPredicateConcept |
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30 | template<class ForwardRange> |
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31 | inline BOOST_DEDUCED_TYPENAME range_iterator<ForwardRange>::type |
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32 | max_element(ForwardRange& rng) |
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33 | { |
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34 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> )); |
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35 | return std::max_element(boost::begin(rng), boost::end(rng)); |
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36 | } |
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37 | |
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38 | /// \overload |
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39 | template<class ForwardRange> |
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40 | inline BOOST_DEDUCED_TYPENAME range_iterator<const ForwardRange>::type |
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41 | max_element(const ForwardRange& rng) |
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42 | { |
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43 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> )); |
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44 | return std::max_element(boost::begin(rng), boost::end(rng)); |
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45 | } |
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46 | |
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47 | /// \overload |
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48 | template<class ForwardRange, class BinaryPredicate> |
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49 | inline BOOST_DEDUCED_TYPENAME range_iterator<ForwardRange>::type |
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50 | max_element(ForwardRange& rng, BinaryPredicate pred) |
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51 | { |
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52 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> )); |
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53 | return std::max_element(boost::begin(rng), boost::end(rng), pred); |
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54 | } |
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55 | |
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56 | /// \overload |
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57 | template<class ForwardRange, class BinaryPredicate> |
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58 | inline BOOST_DEDUCED_TYPENAME range_iterator<const ForwardRange>::type |
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59 | max_element(const ForwardRange& rng, BinaryPredicate pred) |
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60 | { |
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61 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> )); |
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62 | return std::max_element(boost::begin(rng), boost::end(rng), pred); |
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63 | } |
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64 | |
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65 | // range_return overloads |
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66 | |
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67 | /// \overload |
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68 | template<range_return_value re, class ForwardRange> |
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69 | inline BOOST_DEDUCED_TYPENAME range_return<ForwardRange,re>::type |
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70 | max_element(ForwardRange& rng) |
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71 | { |
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72 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> )); |
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73 | return range_return<ForwardRange,re>::pack( |
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74 | std::max_element(boost::begin(rng), boost::end(rng)), |
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75 | rng); |
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76 | } |
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77 | |
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78 | /// \overload |
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79 | template<range_return_value re, class ForwardRange> |
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80 | inline BOOST_DEDUCED_TYPENAME range_return<const ForwardRange,re>::type |
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81 | max_element(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 range_return<const ForwardRange,re>::pack( |
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85 | std::max_element(boost::begin(rng), boost::end(rng)), |
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86 | rng); |
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87 | } |
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88 | |
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89 | /// \overload |
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90 | template<range_return_value re, class ForwardRange, class BinaryPredicate> |
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91 | inline BOOST_DEDUCED_TYPENAME range_return<ForwardRange,re>::type |
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92 | max_element(ForwardRange& rng, BinaryPredicate pred) |
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93 | { |
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94 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> )); |
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95 | return range_return<ForwardRange,re>::pack( |
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96 | std::max_element(boost::begin(rng), boost::end(rng), pred), |
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97 | rng); |
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98 | } |
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99 | |
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100 | /// \overload |
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101 | template<range_return_value re, class ForwardRange, class BinaryPredicate> |
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102 | inline BOOST_DEDUCED_TYPENAME range_return<const ForwardRange,re>::type |
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103 | max_element(const ForwardRange& rng, BinaryPredicate pred) |
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104 | { |
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105 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> )); |
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106 | return range_return<const ForwardRange,re>::pack( |
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107 | std::max_element(boost::begin(rng), boost::end(rng), pred), |
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108 | rng); |
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109 | } |
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110 | |
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111 | } // namespace range |
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112 | using range::max_element; |
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113 | } // namespace boost |
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114 | |
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115 | #endif // include guard |
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