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tweaked the models section of counting_iterator

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[SVN r21678]
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Jeremy Siek
2004-01-13 14:22:39 +00:00
parent d70b0d3f05
commit 6cf1230c13
3 changed files with 30 additions and 17 deletions
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15
doc/counting_iterator_ref.rst
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@ -35,8 +35,7 @@ If ``CategoryOrTraversal`` is not ``use_default`` then the member
``numeric_limits<Incrementable>::is_specialized``, then
``iterator_category`` is a type convertible to
``random_access_iterator_tag``. Otherwise, ``iterator_category`` is
unspecified, and the ``counting_iterator`` specialization models the
same iterator traversal concepts modeled by ``Incrementable``.
unspecified.
[*Note:* implementers are encouraged to provide an implementation of
``operator-`` and a ``difference_type`` that avoids overflows in
@ -75,9 +74,15 @@ the following must must also be valid::
Specializations of ``counting_iterator`` model Readable Lvalue
Iterator. In addition, they model the concepts corresponding to the
iterator tags to which their ``iterator_category`` is convertible and
also corresponding to ``CategoryOrTraversal`` when
``CategoryOrTraversal`` is an iterator tag (and not ``use_default``).
iterator tags to which their ``iterator_category`` is convertible.
Also, if ``CategoryOrTraversal`` is not ``use_default`` then
``counting_iterator`` models the concept corresponding to the iterator
tag ``CategoryOrTraversal``. Otherwise, if
``numeric_limits<Incrementable>::is_specialized``, then
``counting_iterator`` models Random Access Traversal Iterator.
Otherwise, ``counting_iterator`` models the same iterator traversal
concepts modeled by ``Incrementable``.
``counting_iterator`` operations