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https://issues.apache.org/jira/browse/ARROW-14168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17452577#comment-17452577
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Ian Cook commented on ARROW-14168:
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[~dragosmg] yes, now that {{{}if_else{}}}, {{{}case_when{}}}, and {{coalesce}}
all natively support factors/dictionaries now, I believe this is now only
applicable to the aggregate functions. In the future there might be other
functions that it applies to.
> [R] Warn only once about arrow function differences
> ---------------------------------------------------
>
> Key: ARROW-14168
> URL: https://issues.apache.org/jira/browse/ARROW-14168
> Project: Apache Arrow
> Issue Type: Improvement
> Components: R
> Reporter: Neal Richardson
> Assignee: Dragoș Moldovan-Grünfeld
> Priority: Major
> Labels: good-first-issue
> Fix For: 7.0.0
>
>
> When someone calls median or quantile, we warn them that it is approximate.
> -When someone calls if_else, case_when, or coalesce on a dictionary array, we
> warn them that it will be converted to string type.- (if_else, case_when, and
> coalesce now have native support for dictionary arrays.) We probably only
> need to warn the first time. (This will also solve the issue of uncaught
> duplicate warnings in our tests, which the testthat 3e upgrade exposes.)
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