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change Incrementable Iterator reqs to better match those of Input/Output Iterators

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[SVN r23510]
This commit is contained in:
Jeremy Siek
2004-07-13 19:50:09 +00:00
parent 2721c3c97e
commit f0bc339d55
1 changed files with 22 additions and 22 deletions
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44
doc/new-iter-concepts.rst
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@ -433,9 +433,9 @@ iterator.
| | |where *cv* is an optional | | | |where *cv* is an optional |
| | |cv-qualification. | | | |cv-qualification. |
| | |pre: ``a`` is | | | |pre: ``a`` is |
| | |dereferenceable. If ``a | | | |dereferenceable. ``a == b`` if and |
| | |== b`` then ``*a`` is | | | |only if ``*a`` is the same object |
| | |equivalent to ``*b``. | | | |as ``*b``. |
+-------------+-----------+-----------------------------------+ +-------------+-----------+-----------------------------------+
@ -458,25 +458,25 @@ Constructible, the following expressions are valid and respect the
stated semantics. stated semantics.
+-------------------------------------------------------------------------------------+ +-----------------------------------------------------------------------------------------------------------+
|Incrementable Iterator Requirements (in addition to Assignable, Copy Constructible) | |Incrementable Iterator Requirements (in addition to Assignable, Copy Constructible) |
| | | |
+--------------------------------+-------------------------------+--------------------+ +--------------------------------+----------------------------------+---------------------------------------+
|Expression |Return Type |Assertion/Semantics | |Expression |Return Type |Assertion/Semantics |
+================================+===============================+====================+ +================================+==================================+=======================================+
|``++r`` |``X&`` |``&r == &++r`` | |``++r`` |``X&`` |``&r == &++r`` |
+--------------------------------+-------------------------------+--------------------+ +--------------------------------+----------------------------------+---------------------------------------+
|``r++`` |``X`` |:: | |``r++`` |if ``X`` is a *Writable Iterator* |if ``X`` is a *Writable Iterator* then |
| | | | | |then convertible to ``const X&`` |``X a(r++);`` is equivalent to |
| | | { | | | |``X a(r); ++r;`` |
| | | X tmp = r; | +--------------------------------+----------------------------------+---------------------------------------+
| | | ++r; | |``*r++`` |if ``X`` is a *Readable Iterator* |if ``X`` is a *Readable Iterator* then |
| | | return tmp; | | |then ``T`` |``T z(*r++);`` is equivalent to |
| | | } | | | |``T z(*r); ++r;`` |
+--------------------------------+-------------------------------+--------------------+ +--------------------------------+----------------------------------+---------------------------------------+
|``iterator_traversal<X>::type`` |Convertible to | | |``iterator_traversal<X>::type`` |Convertible to | |
| |``incrementable_traversal_tag``| | | |``incrementable_traversal_tag`` | |
+--------------------------------+-------------------------------+--------------------+ +--------------------------------+----------------------------------+---------------------------------------+
.. TR1: incrementable_iterator_tag changed to .. TR1: incrementable_iterator_tag changed to
incrementable_traversal_tag for consistency. incrementable_traversal_tag for consistency.