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50 lines
1.5 KiB
50 lines
1.5 KiB
// Copyright Neil Groves 2009. Use, modification and |
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// distribution is subject to the Boost Software License, Version |
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// 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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// http://www.boost.org/LICENSE_1_0.txt) |
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// |
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// |
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// For more information, see http://www.boost.org/libs/range/ |
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// |
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#ifndef BOOST_RANGE_ALGORITHM_COUNT_HPP_INCLUDED |
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#define BOOST_RANGE_ALGORITHM_COUNT_HPP_INCLUDED |
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#include <boost/concept_check.hpp> |
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#include <boost/range/begin.hpp> |
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#include <boost/range/end.hpp> |
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#include <boost/range/concepts.hpp> |
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#include <boost/range/difference_type.hpp> |
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#include <algorithm> |
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namespace boost |
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{ |
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namespace range |
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{ |
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/// \brief template function count |
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/// |
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/// range-based version of the count std algorithm |
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/// |
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/// \pre SinglePassRange is a model of the SinglePassRangeConcept |
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template< class SinglePassRange, class Value > |
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inline BOOST_DEDUCED_TYPENAME range_difference<SinglePassRange>::type |
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count(SinglePassRange& rng, const Value& val) |
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{ |
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BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange> )); |
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return std::count(boost::begin(rng), boost::end(rng), val); |
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} |
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/// \overload |
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template< class SinglePassRange, class Value > |
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inline BOOST_DEDUCED_TYPENAME range_difference<SinglePassRange const>::type |
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count(const SinglePassRange& rng, const Value& val) |
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{ |
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BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange> )); |
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return std::count(boost::begin(rng), boost::end(rng), val); |
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} |
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} // namespace range |
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using range::count; |
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} // namespace boost |
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#endif // include guard
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