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