[jira] [Updated] (ARROW-15215) [C++] Consolidate kernel utilities between replace_with_mask, case_when, coalesce, choose

["David Li (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-15215?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Li updated ARROW-15215:
-----------------------------
    Labels: good-second-issue  (was: )

> [C++] Consolidate kernel utilities between replace_with_mask, case_when, coalesce, choose
> -----------------------------------------------------------------------------------------
>
>                 Key: ARROW-15215
>                 URL: https://issues.apache.org/jira/browse/ARROW-15215
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: David Li
>            Priority: Major
>              Labels: good-second-issue
>
> All four kernels (and soon to be fill_null_forward/backward) make use of a set of very similar utilities for copying data between arrays; we should consolidate those into a single set of helpers instead of duplicating them, and consider whether they could be further consolidated (e.g. making use of the FixedWidthType hierarchy instead of specializing for every type)



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