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more work on the specification of iterator_category
[SVN r21662]
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@ -33,9 +33,8 @@ integral type. Otherwise ``difference_type`` is ``Difference``.
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If ``CategoryOrTraversal`` is not ``use_default`` then the member
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``iterator_category`` is ``CategoryOrTraversal``. Otherwise, if
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``Incrementable`` is a numeric type then ``iterator_category`` is a
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type convertible to ``random_access_traversal_tag`` and
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``random_access_iterator_tag``. If ``Incrementable`` is not a numeric
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type then ``iterator_category`` is
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type convertible to ``random_access_iterator_tag``. If
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``Incrementable`` is not a numeric type then ``iterator_category`` is
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``iterator_traversal<Incrementable>::type``.
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