diff --git a/static_assert_example_2.cpp b/static_assert_example_2.cpp
new file mode 100644
index 0000000..a32b79d
--- /dev/null
+++ b/static_assert_example_2.cpp
@@ -0,0 +1,40 @@
+//  (C) Copyright John Maddock 2000.
+//  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 for most recent version including documentation.
+
+#include <iterator>
+#include <list>
+#include <deque>
+#include <boost/static_assert.hpp>
+#include <boost/type_traits.hpp>
+
+template <class RandomAccessIterator >
+RandomAccessIterator foo(RandomAccessIterator from, RandomAccessIterator /*to*/)
+{
+   // this template can only be used with
+   // random access iterators...
+   typedef typename std::iterator_traits< RandomAccessIterator >::iterator_category cat;
+   BOOST_STATIC_ASSERT((boost::is_convertible<cat, const std::random_access_iterator_tag&>::value));
+   //
+   // detail goes here...
+   return from;
+}
+
+int main()
+{
+   std::deque<int> d;
+   std::list<int> l;
+   foo(d.begin(), d.end()); // OK
+   //foo(l.begin(), l.end()); // error
+   return 0;
+}
+
+
+
+
+
+
+