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https://issues.apache.org/jira/browse/ARROW-5508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16863415#comment-16863415
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Wes McKinney commented on ARROW-5508:
-------------------------------------
I added a prototype for this here, see the comment on the Next method
https://github.com/apache/arrow/blob/master/cpp/src/arrow/util/iterator.h
I notice that I missed the virtual destructor.
If this is the preferred Iterator interface, then I would suggest refactoring
one or two of our ad hoc iterator classes in the codebase to use
{{arrow::Iterator<T>}} as a path to resolving this issue. Thoughts?
> [C++] Create reusable Iterator<T> interface
> --------------------------------------------
>
> Key: ARROW-5508
> URL: https://issues.apache.org/jira/browse/ARROW-5508
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Wes McKinney
> Assignee: Wes McKinney
> Priority: Major
> Fix For: 0.14.0
>
>
> We have various iterator-like classes. I envision a reusable interface like
> {code}
> template <typename T>
> class Iterator {
> public:
> virtual ~Iterator() = default;
> virtual Status Next(T* out) = 0;
> }
> {code}
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