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new files for iterator concepts

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[SVN r22004]
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Jeremy Siek
2004-01-27 17:03:46 +00:00
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doc/ReadableIterator.rst Executable file
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Readable Iterator Concept
.........................
A class or built-in type ``X`` models the *Readable Iterator* concept
for value type ``T`` if, in addition to ``X`` being Assignable and
Copy Constructible, the following expressions are valid and respect
the stated semantics. ``U`` is the type of any specified member of
type ``T``.
+-----------------------------------------------------------------------------------------------------------------------------+
|Readable Iterator Requirements (in addition to Assignable and Copy Constructible) |
+-----------------------------------+------------------------+----------------------------------------------------------------+
|Expression |Return Type |Note/Precondition |
+===================================+========================+================================================================+
|``iterator_traits<X>::value_type`` |``T`` |Any non-reference, |
| | |non-cv-qualified type |
+-----------------------------------+------------------------+----------------------------------------------------------------+
|``*a`` | Convertible to ``T`` |pre: ``a`` is dereferenceable. If ``a == b`` then ``*a`` |
| | | is equivalent to ``*b``. |
+-----------------------------------+------------------------+----------------------------------------------------------------+
|``a->m`` |``U&`` |pre: ``pre: (*a).m`` is well-defined. Equivalent to ``(*a).m``. |
+-----------------------------------+------------------------+----------------------------------------------------------------+