merge from trunk

[SVN r56179]

test/compile_time/fold.cpp

@@ -0,0 +1,42 @@
+/*=============================================================================
+    Copyright (c) 2008 Dan Marsden
+  
+    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).
+==============================================================================*/
+
+#include <boost/fusion/include/fold.hpp>
+#include <boost/fusion/include/vector.hpp>
+
+namespace fusion = boost::fusion;
+
+namespace
+{
+  template<int n, int batch>
+  struct distinct
+  {};
+
+  struct f
+  {
+    typedef int result_type;
+
+    template<int n, int batch>
+    int operator()(distinct<n, batch> const& d, int state) const
+    {
+      return state + n;
+    }
+  };
+
+  template<int batch>
+  void test()
+  {
+    fusion::vector<
+      distinct<0, batch>, distinct<1, batch>, distinct<2, batch>, distinct<3, batch>, distinct<4, batch>,
+      distinct<5, batch>, distinct<6, batch>, distinct<7, batch>, distinct<8, batch>, distinct<9, batch> > v;
+
+    fusion::fold(v, 0, f());
+  }
+}
+
+#include "./driver.hpp"