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associative iterators & views

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[SVN r57156]
This commit is contained in:
Christopher Schmidt
2009-10-25 22:59:54 +00:00
parent 35e469e2d5
commit 9b26b4a0f7
69 changed files with 1331 additions and 942 deletions
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16
include/boost/fusion/sequence/intrinsic/has_key.hpp
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@ -7,9 +7,11 @@
#if !defined(FUSION_HAS_KEY_09232005_1454)
#define FUSION_HAS_KEY_09232005_1454
#include <boost/mpl/not.hpp>
#include <boost/fusion/support/tag_of.hpp>
#include <boost/type_traits/is_same.hpp>
#include <boost/fusion/iterator/equal_to.hpp>
#include <boost/fusion/algorithm/query/find.hpp>
#include <boost/fusion/sequence/intrinsic/end.hpp>
#include <boost/mpl/not.hpp>
namespace boost { namespace fusion
{
@ -26,10 +28,14 @@ namespace boost { namespace fusion
template <typename Tag>
struct has_key_impl
{
template <typename Sequence, typename Key>
template <typename Seq, typename Key>
struct apply
: mpl::not_<is_same<typename Sequence::
template meta_at_impl<Key>::type, void_> >
: mpl::not_<
typename result_of::equal_to<
typename result_of::find<Seq, Key>::type
, typename result_of::end<Seq>::type
>::type
>::type
{};
};