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Remove unnecessary specialization

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Signed-off-by: Kohei Takahashi <flast@flast.jp>
This commit is contained in:
Kohei Takahashi
2014-06-14 15:58:52 +09:00
parent c040d4c38b
commit 782313db8c
1 changed files with 3 additions and 27 deletions
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30
include/boost/iterator/zip_iterator.hpp
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@ -14,7 +14,6 @@
#include <boost/iterator/iterator_facade.hpp>
#include <boost/iterator/iterator_adaptor.hpp> // for enable_if_convertible
#include <boost/iterator/iterator_categories.hpp>
#include <boost/detail/iterator.hpp>
#include <boost/iterator/detail/minimum_category.hpp>
@ -28,7 +27,6 @@
#include <boost/mpl/fold.hpp>
#include <boost/mpl/transform.hpp>
#include <boost/mpl/placeholders.hpp>
#include <boost/mpl/aux_/lambda_support.hpp>
#include <boost/fusion/algorithm/iteration/for_each.hpp>
#include <boost/fusion/algorithm/transformation/transform.hpp>
@ -88,9 +86,7 @@ namespace boost {
remove_reference<typename remove_cv<Iterator>::type>::type
iterator;
typedef typename
iterator_traits<iterator>::reference
type;
typedef typename iterator_reference<iterator>::type type;
};
template<typename Iterator>
@ -99,26 +95,6 @@ namespace boost {
{ return *it; }
};
template<typename Iterator>
struct iterator_reference
{
typedef typename iterator_traits<Iterator>::reference type;
};
#ifdef BOOST_MPL_CFG_NO_FULL_LAMBDA_SUPPORT
// Hack because BOOST_MPL_AUX_LAMBDA_SUPPORT doesn't seem to work
// out well. Instantiating the nested apply template also
// requires instantiating iterator_traits on the
// placeholder. Instead we just specialize it as a metafunction
// class.
template<>
struct iterator_reference<mpl::_1>
{
template <class T>
struct apply : iterator_reference<T> {};
};
#endif
// Metafunction to obtain the type of the tuple whose element types
// are the reference types of an iterator tuple.
//
@ -198,9 +174,9 @@ namespace boost {
typedef reference value_type;
// Difference type is the first iterator's difference type
typedef typename iterator_traits<
typedef typename iterator_difference<
typename mpl::at_c<IteratorTuple, 0>::type
>::difference_type difference_type;
>::type difference_type;
// Traversal catetgory is the minimum traversal category in the
// iterator tuple.