| /*============================================================================= |
| Copyright (c) 2001-2006 Joel de Guzman |
| Copyright (c) 2006 Dan Marsden |
| |
| 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(FUSION_VALUE_AT_KEY_IMPL_05222005_0325) |
| #define FUSION_VALUE_AT_KEY_IMPL_05222005_0325 |
| |
| namespace boost { namespace fusion |
| { |
| struct map_tag; |
| |
| namespace extension |
| { |
| template <typename Tag> |
| struct value_at_key_impl; |
| |
| template <> |
| struct value_at_key_impl<map_tag> |
| { |
| template <typename Sequence, typename Key> |
| struct apply |
| { |
| typedef typename Sequence:: |
| template meta_at_impl<Key>::type type; |
| }; |
| }; |
| } |
| }} |
| |
| #endif |