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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_MISMATCH_HPP_INCLUDED
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10 #define BOOST_RANGE_ALGORITHM_MISMATCH_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/difference_type.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_detail
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22 {
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23 template< class SinglePassTraversalReadableIterator1,
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24 class SinglePassTraversalReadableIterator2 >
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25 inline std::pair<SinglePassTraversalReadableIterator1,
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26 SinglePassTraversalReadableIterator2>
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27 mismatch_impl(SinglePassTraversalReadableIterator1 first1,
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28 SinglePassTraversalReadableIterator1 last1,
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29 SinglePassTraversalReadableIterator2 first2,
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30 SinglePassTraversalReadableIterator2 last2)
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31 {
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32 while (first1 != last1 && first2 != last2 && *first1 == *first2)
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33 {
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34 ++first1;
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35 ++first2;
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36 }
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37 return std::pair<SinglePassTraversalReadableIterator1,
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38 SinglePassTraversalReadableIterator2>(first1, first2);
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39 }
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40
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41 template< class SinglePassTraversalReadableIterator1,
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42 class SinglePassTraversalReadableIterator2,
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43 class BinaryPredicate >
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44 inline std::pair<SinglePassTraversalReadableIterator1,
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45 SinglePassTraversalReadableIterator2>
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46 mismatch_impl(SinglePassTraversalReadableIterator1 first1,
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47 SinglePassTraversalReadableIterator1 last1,
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48 SinglePassTraversalReadableIterator2 first2,
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49 SinglePassTraversalReadableIterator2 last2,
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50 BinaryPredicate pred)
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51 {
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52 while (first1 != last1 && first2 != last2 && pred(*first1, *first2))
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53 {
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54 ++first1;
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55 ++first2;
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56 }
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57 return std::pair<SinglePassTraversalReadableIterator1,
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58 SinglePassTraversalReadableIterator2>(first1, first2);
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59 }
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60 } // namespace range_detail
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61
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62 namespace range
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63 {
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64 /// \brief template function mismatch
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65 ///
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66 /// range-based version of the mismatch std algorithm
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67 ///
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68 /// \pre SinglePassRange1 is a model of the SinglePassRangeConcept
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69 /// \pre SinglePassRange2 is a model of the SinglePassRangeConcept
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70 /// \pre BinaryPredicate is a model of the BinaryPredicateConcept
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71 template< class SinglePassRange1, class SinglePassRange2 >
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72 inline std::pair<
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73 BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange1>::type,
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74 BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange2>::type >
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75 mismatch(SinglePassRange1& rng1, const SinglePassRange2 & rng2)
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76 {
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77 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange1> ));
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78 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange2> ));
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79
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80 return ::boost::range_detail::mismatch_impl(
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81 ::boost::begin(rng1), ::boost::end(rng1),
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82 ::boost::begin(rng2), ::boost::end(rng2));
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83 }
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84
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85 /// \overload
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86 template< class SinglePassRange1, class SinglePassRange2 >
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87 inline std::pair<
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88 BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange1>::type,
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89 BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange2>::type >
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90 mismatch(const SinglePassRange1& rng1, const SinglePassRange2& rng2)
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91 {
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92 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange1> ));
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93 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange2> ));
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94
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95 return ::boost::range_detail::mismatch_impl(
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96 ::boost::begin(rng1), ::boost::end(rng1),
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97 ::boost::begin(rng2), ::boost::end(rng2));
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98 }
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99
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100 /// \overload
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101 template< class SinglePassRange1, class SinglePassRange2 >
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102 inline std::pair<
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103 BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange1>::type,
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104 BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange2>::type >
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105 mismatch(SinglePassRange1& rng1, SinglePassRange2 & rng2)
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106 {
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107 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange1> ));
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108 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange2> ));
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109
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110 return ::boost::range_detail::mismatch_impl(
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111 ::boost::begin(rng1), ::boost::end(rng1),
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112 ::boost::begin(rng2), ::boost::end(rng2));
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113 }
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114
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115 /// \overload
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116 template< class SinglePassRange1, class SinglePassRange2 >
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117 inline std::pair<
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118 BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange1>::type,
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119 BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange2>::type >
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120 mismatch(const SinglePassRange1& rng1, SinglePassRange2& rng2)
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121 {
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122 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange1> ));
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123 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange2> ));
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124
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125 return ::boost::range_detail::mismatch_impl(
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126 ::boost::begin(rng1), ::boost::end(rng1),
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127 ::boost::begin(rng2), ::boost::end(rng2));
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128 }
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129
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130
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131 /// \overload
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132 template< class SinglePassRange1, class SinglePassRange2, class BinaryPredicate >
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133 inline std::pair<
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134 BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange1>::type,
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135 BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange2>::type >
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136 mismatch(SinglePassRange1& rng1, const SinglePassRange2& rng2, BinaryPredicate pred)
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137 {
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138 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange1> ));
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139 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange2> ));
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140
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141 return ::boost::range_detail::mismatch_impl(
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142 ::boost::begin(rng1), ::boost::end(rng1),
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143 ::boost::begin(rng2), ::boost::end(rng2), pred);
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144 }
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145
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146 /// \overload
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147 template< class SinglePassRange1, class SinglePassRange2, class BinaryPredicate >
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148 inline std::pair<
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149 BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange1>::type,
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150 BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange2>::type >
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151 mismatch(const SinglePassRange1& rng1, const SinglePassRange2& rng2, BinaryPredicate pred)
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152 {
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153 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange1> ));
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154 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange2> ));
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155
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156 return ::boost::range_detail::mismatch_impl(
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157 ::boost::begin(rng1), ::boost::end(rng1),
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158 ::boost::begin(rng2), ::boost::end(rng2), pred);
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159 }
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160
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161 /// \overload
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162 template< class SinglePassRange1, class SinglePassRange2, class BinaryPredicate >
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163 inline std::pair<
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164 BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange1>::type,
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165 BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange2>::type >
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166 mismatch(SinglePassRange1& rng1, SinglePassRange2& rng2, BinaryPredicate pred)
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167 {
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168 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange1> ));
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169 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange2> ));
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170
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171 return ::boost::range_detail::mismatch_impl(
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172 ::boost::begin(rng1), ::boost::end(rng1),
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173 ::boost::begin(rng2), ::boost::end(rng2), pred);
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174 }
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175
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176 /// \overload
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177 template< class SinglePassRange1, class SinglePassRange2, class BinaryPredicate >
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178 inline std::pair<
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179 BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange1>::type,
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180 BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange2>::type >
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181 mismatch(const SinglePassRange1& rng1, SinglePassRange2& rng2, BinaryPredicate pred)
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182 {
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183 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange1> ));
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184 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange2> ));
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185
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186 return ::boost::range_detail::mismatch_impl(
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187 ::boost::begin(rng1), ::boost::end(rng1),
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188 ::boost::begin(rng2), ::boost::end(rng2), pred);
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189 }
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190
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191 } // namespace range
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192 using range::mismatch;
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193 } // namespace boost
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194
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195 #endif // include guard
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