Difference between revisions of "cpp/named req/OutputIterator"
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Revision as of 06:28, 14 January 2013
Template:cpp/concept/title Template:cpp/concept/navbar
An OutputIterator is an Template:concept that can write to the pointed-to element.
An example of a type that implements OutputIterator is std::ostream_iterator.
When Template:concept, Template:concept, or Template:concept satisfies the Template:concept requirements in addition to its own requirements, it is described as mutable.
Requirements
In addition to the above requirement, for a type It to be an OutputIterator, instances i and o of It must:
| Expression | Return | Equivalent expression | Notes |
|---|---|---|---|
| *i = o | it may not be possible to write twice in the same iterator | ||
| ++i | It& | After this, copies of i may be invalidated.Post: &r == &++r | |
| i++ | const It& | It temp = i; ++i; |
|
| *i++ = o | *i = o; ++i; |
