Mercurial > hg > vamp-build-and-test
diff DEPENDENCIES/generic/include/boost/fusion/sequence/intrinsic/front.hpp @ 16:2665513ce2d3
Add boost headers
author | Chris Cannam |
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date | Tue, 05 Aug 2014 11:11:38 +0100 |
parents | |
children | c530137014c0 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DEPENDENCIES/generic/include/boost/fusion/sequence/intrinsic/front.hpp Tue Aug 05 11:11:38 2014 +0100 @@ -0,0 +1,42 @@ +/*============================================================================= + Copyright (c) 2001-2011 Joel de Guzman + + 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_FRONT_09162005_0343) +#define FUSION_FRONT_09162005_0343 + +#include <boost/fusion/sequence/intrinsic_fwd.hpp> +#include <boost/fusion/sequence/intrinsic/begin.hpp> +#include <boost/fusion/iterator/deref.hpp> +#include <boost/mpl/bool.hpp> + +namespace boost { namespace fusion +{ + struct fusion_sequence_tag; + + namespace result_of + { + template <typename Sequence> + struct front + : result_of::deref<typename result_of::begin<Sequence>::type> + {}; + } + + template <typename Sequence> + inline typename result_of::front<Sequence>::type + front(Sequence& seq) + { + return *fusion::begin(seq); + } + + template <typename Sequence> + inline typename result_of::front<Sequence const>::type + front(Sequence const& seq) + { + return *fusion::begin(seq); + } +}} + +#endif