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65 lines
2.6 KiB
C++
65 lines
2.6 KiB
C++
/*
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Copyright (c) Marshall Clow 2008-2012.
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE10.txt or copy at http://www.boost.org/LICENSE10.txt)
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*/
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/// \file mismatch.hpp
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/// \brief Find the first mismatched element in a sequence
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/// \author Marshall Clow
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#ifndef BOOST_ALGORITHM_MISMATCH_HPP
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#define BOOST_ALGORITHM_MISMATCH_HPP
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#include <utility> // for std::pair
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namespace boost { namespace algorithm {
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/// \fn mismatch ( InputIterator1 first1, InputIterator1 last1,
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/// InputIterator2 first2, InputIterator2 last2,
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/// BinaryPredicate pred )
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/// \return a pair of iterators pointing to the first elements in the sequence that do not match
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///
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/// \param first1 The start of the first range.
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/// \param last1 One past the end of the first range.
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/// \param first2 The start of the second range.
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/// \param last2 One past the end of the second range.
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/// \param pred A predicate for comparing the elements of the ranges
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template <class InputIterator1, class InputIterator2, class BinaryPredicate>
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std::pair<InputIterator1, InputIterator2> mismatch (
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InputIterator1 first1, InputIterator1 last1,
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InputIterator2 first2, InputIterator2 last2,
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BinaryPredicate pred )
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{
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for (; first1 != last1 && first2 != last2; ++first1, ++first2)
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if ( !pred ( *first1, *first2 ))
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break;
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return std::pair<InputIterator1, InputIterator2>(first1, first2);
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}
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/// \fn mismatch ( InputIterator1 first1, InputIterator1 last1,
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/// InputIterator2 first2, InputIterator2 last2 )
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/// \return a pair of iterators pointing to the first elements in the sequence that do not match
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///
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/// \param first1 The start of the first range.
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/// \param last1 One past the end of the first range.
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/// \param first2 The start of the second range.
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/// \param last2 One past the end of the second range.
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template <class InputIterator1, class InputIterator2>
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std::pair<InputIterator1, InputIterator2> mismatch (
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InputIterator1 first1, InputIterator1 last1,
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InputIterator2 first2, InputIterator2 last2 )
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{
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for (; first1 != last1 && first2 != last2; ++first1, ++first2)
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if ( *first1 != *first2 )
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break;
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return std::pair<InputIterator1, InputIterator2>(first1, first2);
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}
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// There are already range-based versions of these.
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}} // namespace boost and algorithm
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#endif // BOOST_ALGORITHM_MISMATCH_HPP
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