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61 lines
1.8 KiB
61 lines
1.8 KiB
/*-----------------------------------------------------------------------------+ |
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Copyright (c) 2010-2010: Joachim Faulhaber |
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+------------------------------------------------------------------------------+ |
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Distributed under the Boost Software License, Version 1.0. |
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(See accompanying file LICENCE.txt or copy at |
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http://www.boost.org/LICENSE_1_0.txt) |
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+-----------------------------------------------------------------------------*/ |
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#ifndef BOOST_ICL_CONCEPT_MAP_VALUE_HPP_JOFA_100924 |
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#define BOOST_ICL_CONCEPT_MAP_VALUE_HPP_JOFA_100924 |
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#include <boost/icl/type_traits/predicate.hpp> |
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#include <boost/icl/type_traits/identity_element.hpp> |
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#include <boost/icl/type_traits/is_map.hpp> |
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namespace boost{ namespace icl |
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{ |
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//============================================================================== |
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//= AlgoUnifiers<Map> |
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//============================================================================== |
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template<class Type, class Iterator> |
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inline typename enable_if<is_map<Type>, const typename Type::key_type>::type& |
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key_value(Iterator it_) |
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{ |
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return (*it_).first; |
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} |
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template<class Type, class Iterator> |
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inline typename enable_if<is_map<Type>, const typename Type::codomain_type>::type& |
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co_value(Iterator it_) |
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{ |
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return (*it_).second; |
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} |
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template<class Type> |
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inline typename enable_if<is_map<Type>, typename Type::value_type>::type |
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make_value(const typename Type:: key_type& key_val, |
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const typename Type::codomain_type& co_val) |
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{ |
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return typename Type::value_type(key_val, co_val); |
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} |
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template <class Type> |
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class content_is_identity_element: public property<Type> |
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{ |
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public: |
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bool operator() (const Type& value_pair)const |
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{ |
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return value_pair.second |
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== identity_element<typename Type::second_type>::value(); |
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} |
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} ; |
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}} // namespace boost icl |
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#endif |
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