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https://issues.apache.org/jira/browse/ARROW-5508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16867492#comment-16867492
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Liya Fan commented on ARROW-5508:
---------------------------------
I still have not figured out how to check the end of the iterator by the Next
method:
# If it is through the return value, this could be inefficient - Status is a
class, and there can be object copy when returning an Status object.
# If it is through the method parameter, I think the parameter type should be
T*& or T** ?
> [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
> Priority: Major
>
> 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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