make find and find_if algorithms segment-aware, stylistic consistency tweaks

[SVN r73892]

include/boost/fusion/algorithm/query/find_fwd.hpp

@@ -0,0 +1,34 @@
+/*=============================================================================
+    Copyright (c) 2011 Eric Niebler
+
+    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)
+==============================================================================*/
+#if !defined(BOOST_FUSION_FIND_FWD_HPP_INCLUDED)
+#define BOOST_FUSION_FIND_FWD_HPP_INCLUDED
+
+#include <boost/utility/enable_if.hpp>
+#include <boost/type_traits/is_const.hpp>
+
+namespace boost { namespace fusion
+{
+    namespace result_of
+    {
+        template <typename Sequence, typename T>
+        struct find;
+    }
+
+    template <typename T, typename Sequence>
+    inline typename 
+        lazy_disable_if<
+            is_const<Sequence>
+          , result_of::find<Sequence, T>
+        >::type const
+    find(Sequence& seq);
+
+    template <typename T, typename Sequence>
+    inline typename result_of::find<Sequence const, T>::type const
+    find(Sequence const& seq);
+}}
+
+#endif