整理

include/boost/mpl/aux_/apply_1st.hpp

@@ -0,0 +1,35 @@
+
+#ifndef BOOST_MPL_AUX_APPLY_1ST_HPP_INCLUDED
+#define BOOST_MPL_AUX_APPLY_1ST_HPP_INCLUDED
+
+// Copyright Aleksey Gurtovoy 2002-2004
+//
+// 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)
+//
+// See http://www.boost.org/libs/mpl for documentation.
+
+// $Id$
+// $Date$
+// $Revision$
+
+#include <boost/mpl/apply.hpp>
+
+namespace boost { namespace mpl { namespace aux {
+
+struct apply_1st
+{
+    template< typename Pair, typename T > struct apply
+        : apply2<
+              typename Pair::first
+            , typename Pair::second
+            , T
+            >
+    {
+    };
+};
+
+}}}
+
+#endif // BOOST_MPL_AUX_APPLY_1ST_HPP_INCLUDED