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Posted to jira@arrow.apache.org by "Andrew Lamb (Jira)" <ji...@apache.org> on 2020/12/13 12:11:00 UTC

[jira] [Commented] (ARROW-10892) [Rust] Introduce iterators over elements of arrays

    [ https://issues.apache.org/jira/browse/ARROW-10892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17248566#comment-17248566 ] 

Andrew Lamb commented on ARROW-10892:
-------------------------------------

Related discussion: https://github.com/apache/arrow/pull/8900#discussion_r541727214

> [Rust] Introduce iterators over elements of arrays
> --------------------------------------------------
>
>                 Key: ARROW-10892
>                 URL: https://issues.apache.org/jira/browse/ARROW-10892
>             Project: Apache Arrow
>          Issue Type: Bug
>            Reporter: Daniël Heres
>            Priority: Minor
>
> The value functions in the primitive / string / etc arrays are often used to get elements at i in a loop.  Some of them don't have boundary checks for performance reasons, so usage of them is unsafe.
> We should introduce a safe iterator over the elements (T instead of Option<T>) that doesn't do boundary checks and can be used to iterate over the elements of the array. Maybe values_iter would be a good name?



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