| .. Copyright David Abrahams 2006. Distributed under the Boost |
| .. Software License, Version 1.0. (See accompanying |
| .. file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| |
| 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``| | |
| +--------------------------------+-------------------------------+--------------------+ |
