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some fixes to writable iterators

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[SVN r19609]
This commit is contained in:
Jeremy Siek
2003-08-14 20:05:44 +00:00
parent 36feca8a52
commit f325582c40
1 changed files with 7 additions and 14 deletions
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21
doc/new-iter-concepts.rst
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@ -350,17 +350,9 @@ Writable Iterators [lib.writable.iterators]
A class or built-in type ``X`` models the *Writable Iterator* concept
if the following expressions are valid and respect the stated
semantics.
.. A type ``T`` belongs to the *set of value types* of ``X``
if, for an object ``v`` of type ``T``, ``*a = v`` is valid.
** This appears to be a mutual recursion which ends up meaning
nothing. Kill the assertion column?
Separate but related question: Is a writable iterator required
to have a meaningful value_type? If not, we need to use a
different name from ``v`` in this table -DWA
semantics. In addition, a model of *Writable Iterator* must include
in its documentation the *set of value types* that it allows for
output.
+---------------------------------------------------------------------------------------------+
|Writable Iterator Requirements (in addition to CopyConstructible) |
@ -370,11 +362,12 @@ semantics.
|``access_category<X>::type`` |Convertible to | |
| |``writable_iterator_tag``| |
+--------------------------------------+-------------------------+----------------------------+
|``*a = v`` | |.. ** pre: The type of ``v``|
| | | is in the set |
| | | of value types of ``X`` |
|``*a = o`` | | pre: The type of ``o`` |
| | | is in the set of |
| | | value types of ``X`` |
+--------------------------------------+-------------------------+----------------------------+
Swappable Iterators [lib.swappable.iterators]
---------------------------------------------