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diff --git a/ext/boost/utility/result_of.hpp b/ext/boost/utility/result_of.hpp
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+++ b/ext/boost/utility/result_of.hpp
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+// Boost result_of library
+
+//  Copyright Douglas Gregor 2004. Use, modification and
+//  distribution is 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)
+
+// For more information, see http://www.boost.org/libs/utility
+#ifndef BOOST_RESULT_OF_HPP
+#define BOOST_RESULT_OF_HPP
+
+#include <boost/config.hpp>
+#include <boost/type_traits/ice.hpp>
+#include <boost/type.hpp>
+#include <boost/preprocessor.hpp>
+#include <boost/detail/workaround.hpp>
+#include <boost/mpl/has_xxx.hpp>
+#include <boost/mpl/if.hpp>
+#include <boost/mpl/bool.hpp>
+
+#ifndef BOOST_RESULT_OF_NUM_ARGS
+#  define BOOST_RESULT_OF_NUM_ARGS 10
+#endif
+
+namespace boost {
+
+template<typename F> struct result_of;
+
+#if !defined(BOOST_NO_SFINAE) && !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+namespace detail {
+
+BOOST_MPL_HAS_XXX_TRAIT_DEF(result_type)
+
+template<typename F, typename FArgs, bool HasResultType> struct result_of_impl;
+
+template<typename F>
+struct result_of_void_impl
+{
+  typedef void type;
+};
+
+template<typename R>
+struct result_of_void_impl<R (*)(void)>
+{
+  typedef R type;
+};
+
+template<typename R>
+struct result_of_void_impl<R (&)(void)>
+{
+  typedef R type;
+};
+
+template<typename F, typename FArgs>
+struct result_of_impl<F, FArgs, true>
+{
+  typedef typename F::result_type type;
+};
+
+template<typename FArgs>
+struct is_function_with_no_args : mpl::false_ {};
+
+template<typename F>
+struct is_function_with_no_args<F(void)> : mpl::true_ {};
+
+template<typename F, typename FArgs>
+struct result_of_nested_result : F::template result<FArgs>
+{};
+
+template<typename F, typename FArgs>
+struct result_of_impl<F, FArgs, false>
+  : mpl::if_<is_function_with_no_args<FArgs>,
+             result_of_void_impl<F>,
+             result_of_nested_result<F, FArgs> >::type
+{};
+
+} // end namespace detail
+
+#define BOOST_PP_ITERATION_PARAMS_1 (3,(0,BOOST_RESULT_OF_NUM_ARGS,<boost/utility/detail/result_of_iterate.hpp>))
+#include BOOST_PP_ITERATE()
+
+#else
+#  define BOOST_NO_RESULT_OF 1
+#endif
+
+}
+
+#endif // BOOST_RESULT_OF_HPP