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Posted to jira@arrow.apache.org by "Weston Pace (Jira)" <ji...@apache.org> on 2022/10/12 05:00:00 UTC

[jira] [Commented] (ARROW-17820) Implement arithmetic kernels on List(number)

    [ https://issues.apache.org/jira/browse/ARROW-17820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17616184#comment-17616184 ] 

Weston Pace commented on ARROW-17820:
-------------------------------------

Could we do this by running the kernel on the child array?  For example, if we have LIST<FLOAT64> we have a parent list array with one child array.  We could run the unary kernel on the child array.  I think it would only work for unary kernels however.

> Implement arithmetic kernels on List(number)
> --------------------------------------------
>
>                 Key: ARROW-17820
>                 URL: https://issues.apache.org/jira/browse/ARROW-17820
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: C++, Python
>            Reporter: Adam Lippai
>            Priority: Major
>
> eg. rounding in list(float64()), similar to a map or foreach



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