Added boost header

test/external/boost/icl/concept/map_value.hpp

@@ -0,0 +1,61 @@
+/*-----------------------------------------------------------------------------+    
+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
+
+