// 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_COUNT_HPP_INCLUDED #define BOOST_RANGE_ALGORITHM_COUNT_HPP_INCLUDED #include <boost/concept_check.hpp> #include <boost/range/begin.hpp> #include <boost/range/end.hpp> #include <boost/range/concepts.hpp> #include <boost/range/difference_type.hpp> #include <algorithm> namespace boost { namespace range { /// \brief template function count /// /// range-based version of the count std algorithm /// /// \pre SinglePassRange is a model of the SinglePassRangeConcept template< class SinglePassRange, class Value > inline BOOST_DEDUCED_TYPENAME range_difference<SinglePassRange>::type count(SinglePassRange& rng, const Value& val) { BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange> )); return std::count(boost::begin(rng), boost::end(rng), val); } /// \overload template< class SinglePassRange, class Value > inline BOOST_DEDUCED_TYPENAME range_difference<SinglePassRange const>::type count(const SinglePassRange& rng, const Value& val) { BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange> )); return std::count(boost::begin(rng), boost::end(rng), val); } } // namespace range using range::count; } // namespace boost #endif // include guard