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+// Copyright David Abrahams 2003.
+// Distributed under 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)
+#ifndef ITERATOR_TRAITS_DWA200347_HPP
+# define ITERATOR_TRAITS_DWA200347_HPP
+
+# include <boost/detail/iterator.hpp>
+# include <boost/detail/workaround.hpp>
+
+namespace boost {
+namespace iterators {
+
+// Macro for supporting old compilers, no longer needed but kept
+// for backwards compatibility (it was documented).
+#define BOOST_ITERATOR_CATEGORY iterator_category
+
+
+template <class Iterator>
+struct iterator_value
+{
+    typedef typename boost::detail::iterator_traits<Iterator>::value_type type;
+};
+
+template <class Iterator>
+struct iterator_reference
+{
+    typedef typename boost::detail::iterator_traits<Iterator>::reference type;
+};
+
+
+template <class Iterator>
+struct iterator_pointer
+{
+    typedef typename boost::detail::iterator_traits<Iterator>::pointer type;
+};
+
+template <class Iterator>
+struct iterator_difference
+{
+    typedef typename boost::detail::iterator_traits<Iterator>::difference_type type;
+};
+
+template <class Iterator>
+struct iterator_category
+{
+    typedef typename boost::detail::iterator_traits<Iterator>::iterator_category type;
+};
+
+} // namespace iterators
+
+using iterators::iterator_value;
+using iterators::iterator_reference;
+using iterators::iterator_pointer;
+using iterators::iterator_difference;
+using iterators::iterator_category;
+
+} // namespace boost
+
+#endif // ITERATOR_TRAITS_DWA200347_HPP