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-/*
- Copyright (c) Marshall Clow 2008-2012.
-
- Distributed under the Boost Software License, Version 1.0. (See accompanying
- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-*/
-
-/// \file one_of.hpp
-/// \brief Test ranges to see if only one element matches a value or predicate.
-/// \author Marshall Clow
-
-#ifndef BOOST_ALGORITHM_ONE_OF_HPP
-#define BOOST_ALGORITHM_ONE_OF_HPP
-
-#include <algorithm> // for std::find and std::find_if
-#include <boost/algorithm/cxx11/none_of.hpp>
-
-#include <boost/range/begin.hpp>
-#include <boost/range/end.hpp>
-
-namespace boost { namespace algorithm {
-
-/// \fn one_of ( InputIterator first, InputIterator last, Predicate p )
-/// \return true if the predicate 'p' is true for exactly one item in [first, last).
-///
-/// \param first The start of the input sequence
-/// \param last One past the end of the input sequence
-/// \param p A predicate for testing the elements of the sequence
-///
-template<typename InputIterator, typename Predicate>
-bool one_of ( InputIterator first, InputIterator last, Predicate p )
-{
- InputIterator i = std::find_if (first, last, p);
- if (i == last)
- return false; // Didn't occur at all
- return boost::algorithm::none_of (++i, last, p);
-}
-
-/// \fn one_of ( const Range &r, Predicate p )
-/// \return true if the predicate 'p' is true for exactly one item in the range.
-///
-/// \param r The input range
-/// \param p A predicate for testing the elements of the range
-///
-template<typename Range, typename Predicate>
-bool one_of ( const Range &r, Predicate p )
-{
- return boost::algorithm::one_of ( boost::begin (r), boost::end (r), p );
-}
-
-
-/// \fn one_of_equal ( InputIterator first, InputIterator last, const V &val )
-/// \return true if the value 'val' exists only once in [first, last).
-///
-/// \param first The start of the input sequence
-/// \param last One past the end of the input sequence
-/// \param val A value to compare against
-///
-template<typename InputIterator, typename V>
-bool one_of_equal ( InputIterator first, InputIterator last, const V &val )
-{
- InputIterator i = std::find (first, last, val); // find first occurrence of 'val'
- if (i == last)
- return false; // Didn't occur at all
- return boost::algorithm::none_of_equal (++i, last, val);
-}
-
-/// \fn one_of_equal ( const Range &r, const V &val )
-/// \return true if the value 'val' exists only once in the range.
-///
-/// \param r The input range
-/// \param val A value to compare against
-///
-template<typename Range, typename V>
-bool one_of_equal ( const Range &r, const V &val )
-{
- return boost::algorithm::one_of_equal ( boost::begin (r), boost::end (r), val );
-}
-
-}} // namespace boost and algorithm
-
-#endif // BOOST_ALGORITHM_ALL_HPP