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// Copyright Neil Groves 2009. Use, modification and // distribution is subject to 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) // // // For more information, see http://www.boost.org/libs/range/ // #ifndef BOOST_RANGE_ALGORITHM_FOR_EACH_HPP_INCLUDED #define BOOST_RANGE_ALGORITHM_FOR_EACH_HPP_INCLUDED #include <boost/concept_check.hpp> #include <boost/range/begin.hpp> #include <boost/range/end.hpp> #include <boost/range/concepts.hpp> #include <boost/utility/enable_if.hpp> #include <boost/ref.hpp> #include <algorithm> #if BOOST_WORKAROUND(BOOST_MSVC, == 1600) #include <xutility> #endif namespace boost { namespace range { #if BOOST_WORKAROUND(BOOST_MSVC, == 1600) namespace for_each_detail { template<typename Iterator, typename UnaryFunction> inline UnaryFunction for_each_impl(Iterator first, Iterator last, UnaryFunction fun, typename ::boost::enable_if< is_reference_wrapper<UnaryFunction>, void >::type* = 0) { typedef typename std::_Get_unchecked_type<Iterator>::type unchecked_iterator; unchecked_iterator unchecked_last = std::_Unchecked(last); for (unchecked_iterator unchecked_first = std::_Unchecked(first); first != last; ++first) fun.get()(*unchecked_first); return fun; } template<typename Iterator, typename UnaryFunction> inline UnaryFunction for_each_impl(Iterator first, Iterator last, UnaryFunction fn, typename disable_if< is_reference_wrapper<UnaryFunction>, void >::type* = 0) { return std::for_each<Iterator, UnaryFunction>(first, last, fn); } } #endif /// \brief template function for_each /// /// range-based version of the for_each std algorithm /// /// \pre SinglePassRange is a model of the SinglePassRangeConcept /// \pre UnaryFunction is a model of the UnaryFunctionConcept template< class SinglePassRange, class UnaryFunction > inline UnaryFunction for_each(SinglePassRange & rng, UnaryFunction fun) { BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange> )); #if BOOST_WORKAROUND(BOOST_MSVC, == 1600) return for_each_detail::for_each_impl< typename range_iterator<SinglePassRange>::type, UnaryFunction >(boost::begin(rng), boost::end(rng), fun); #else return std::for_each< BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange>::type, UnaryFunction >(boost::begin(rng),boost::end(rng),fun); #endif } /// \overload template< class SinglePassRange, class UnaryFunction > inline UnaryFunction for_each(const SinglePassRange& rng, UnaryFunction fun) { BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange> )); #if BOOST_WORKAROUND(BOOST_MSVC, == 1600) return for_each_detail::for_each_impl< typename range_iterator<const SinglePassRange>::type, UnaryFunction >(boost::begin(rng), boost::end(rng), fun); #else return std::for_each< BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange>::type, UnaryFunction >(boost::begin(rng), boost::end(rng), fun); #endif } } // namespace range using range::for_each; } // namespace boost #endif // include guard