diff --git a/ndnboost/type_traits/rank.hpp b/ndnboost/type_traits/rank.hpp
new file mode 100644
index 0000000..495b91b
--- /dev/null
+++ b/ndnboost/type_traits/rank.hpp
@@ -0,0 +1,89 @@
+
+//  (C) Copyright John Maddock 2005.  
+//  Use, modification and distribution are subject to 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).
+//
+//  See http://www.boost.org/libs/type_traits for most recent version including documentation.
+
+
+#ifndef BOOST_TT_RANK_HPP_INCLUDED
+#define BOOST_TT_RANK_HPP_INCLUDED
+
+// should be the last #include
+#include <ndnboost/type_traits/detail/size_t_trait_def.hpp>
+
+namespace ndnboost {
+
+#if !defined( __CODEGEARC__ )
+
+namespace detail{
+
+template <class T, std::size_t N>
+struct rank_imp
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = N);
+};
+#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS)
+template <class T, std::size_t R, std::size_t N>
+struct rank_imp<T[R], N>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = (::ndnboost::detail::rank_imp<T, N+1>::value));
+};
+
+template <class T, std::size_t R, std::size_t N>
+struct rank_imp<T const[R], N>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = (::ndnboost::detail::rank_imp<T, N+1>::value));
+};
+
+template <class T, std::size_t R, std::size_t N>
+struct rank_imp<T volatile[R], N>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = (::ndnboost::detail::rank_imp<T, N+1>::value));
+};
+
+template <class T, std::size_t R, std::size_t N>
+struct rank_imp<T const volatile[R], N>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = (::ndnboost::detail::rank_imp<T, N+1>::value));
+};
+
+#if !BOOST_WORKAROUND(__BORLANDC__, < 0x600) && !defined(__IBMCPP__) &&  !BOOST_WORKAROUND(__DMC__, BOOST_TESTED_AT(0x840))
+template <class T, std::size_t N>
+struct rank_imp<T[], N>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = (::ndnboost::detail::rank_imp<T, N+1>::value));
+};
+template <class T, std::size_t N>
+struct rank_imp<T const[], N>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = (::ndnboost::detail::rank_imp<T, N+1>::value));
+};
+template <class T, std::size_t N>
+struct rank_imp<T volatile[], N>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = (::ndnboost::detail::rank_imp<T, N+1>::value));
+};
+template <class T, std::size_t N>
+struct rank_imp<T const volatile[], N>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = (::ndnboost::detail::rank_imp<T, N+1>::value));
+};
+#endif
+#endif
+}
+
+#endif // !defined( __CODEGEARC__ )
+
+#if defined( __CODEGEARC__ )
+BOOST_TT_AUX_SIZE_T_TRAIT_DEF1(rank,T,__array_rank(T))
+#else
+BOOST_TT_AUX_SIZE_T_TRAIT_DEF1(rank,T,(::ndnboost::detail::rank_imp<T,0>::value))
+#endif
+
+} // namespace ndnboost
+
+#include <ndnboost/type_traits/detail/size_t_trait_undef.hpp>
+
+#endif // BOOST_TT_IS_MEMBER_FUNCTION_POINTER_HPP_INCLUDED