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added requirement to Forward Traversal Iterator concerning a == b iff *a == *b

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[SVN r23513]
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Jeremy Siek
2004-07-13 20:19:56 +00:00
parent aa62f4f9c7
commit 254186d6bd
1 changed files with 8 additions and 1 deletions
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9
doc/new-iter-concepts.rst
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@ -521,7 +521,12 @@ Forward Traversal Iterators [lib.forward.traversal.iterators]
A class or built-in type ``X`` models the *Forward Traversal Iterator*
concept if, in addition to ``X`` meeting the requirements of Default
Constructible and Single Pass Iterator, the following expressions are
valid and respect the stated semantics.
valid and respect the stated semantics. Also, if ``X`` is a *Readable
Iterator* with ``a`` and ``b`` dereferenceable, then ``a == b`` if and
only if ``*a`` and ``*b`` are the same object. If ``X`` is a
*Writable Iterator*, then ``a == b`` if and only if ``*a = o`` and
``*b = o`` write ``o`` to the same location.
+--------------------------------------------------------------------------------------------------------+
|Forward Traversal Iterator Requirements (in addition to Default Constructible and Single Pass Iterator) |
@ -543,6 +548,8 @@ valid and respect the stated semantics.
| |``forward_traversal_tag`` | |
+---------------------------------------+-----------------------------------+----------------------------+
.. TR1: forward_traversal_iterator_tag changed to
forward_traversal_tag for consistency