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