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- /*=============================================================================
- Copyright (c) 2001-2011 Joel de Guzman
- Copyright (c) 2005-2006 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(BOOST_FUSION_VALUE_AT_KEY_IMPL_20060223_2025)
- #define BOOST_FUSION_VALUE_AT_KEY_IMPL_20060223_2025
- namespace fields
- {
- struct name;
- struct age;
- }
- namespace example
- {
- struct example_sequence_tag;
- }
- namespace boost { namespace fusion {
- namespace extension
- {
- template<typename Tag>
- struct value_at_key_impl;
- template<>
- struct value_at_key_impl<example::example_sequence_tag>
- {
- template<typename Sequence, typename N>
- struct apply;
- template<typename Sequence>
- struct apply<Sequence, fields::name>
- {
- typedef std::string type;
- };
- template<typename Sequence>
- struct apply<Sequence, fields::age>
- {
- typedef int type;
- };
- };
- }
- }}
- #endif
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