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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/IncrementableIterator.rst Executable file
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Incrementable Iterator Concept
..............................
A class or built-in type ``X`` models the *Incrementable Iterator*
concept if, in addition to ``X`` being Assignable and Copy
Constructible, the following expressions are valid and respect the
stated semantics.
+-------------------------------------------------------------------------------------+
|Incrementable Iterator Requirements (in addition to Assignable, Copy Constructible) |
| |
+--------------------------------+-------------------------------+--------------------+
|Expression |Return Type |Assertion/Semantics |
+================================+===============================+====================+
|``++r`` |``X&`` |``&r == &++r`` |
+--------------------------------+-------------------------------+--------------------+
|``r++`` |``X`` |:: |
| | | |
| | | { |
| | | X tmp = r; |
| | | ++r; |
| | | return tmp; |
| | | } |
+--------------------------------+-------------------------------+--------------------+
|``iterator_traversal<X>::type`` |Convertible to | |
| |``incrementable_traversal_tag``| |
+--------------------------------+-------------------------------+--------------------+