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https://issues.apache.org/jira/browse/ARROW-17366?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nicola Crane updated ARROW-17366:
---------------------------------
Parent: ARROW-17895
Issue Type: Sub-task (was: Bug)
> [R] Support purrr-style lambda functions in .fns argument to across()
> ---------------------------------------------------------------------
>
> Key: ARROW-17366
> URL: https://issues.apache.org/jira/browse/ARROW-17366
> Project: Apache Arrow
> Issue Type: Sub-task
> Components: R
> Reporter: Nicola Crane
> Priority: Major
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> ARROW-11699 adds support for dplyr::across inside a mutate(). The .fns
> argument does not yet support purrr-style lambda functions (e.g. {{~round(.x,
> digits = -1)}} but should be added.
> We could also support anonymous functions, e.g.
> {code:r}
> mtcars %>%
> dplyr::summarise(across(.cols = everything(),function(x){head(x,1)}))
> {code}
> As well as this, we should check the new ways in which these functions can be
> specified (n.b. using {{\x}}) as we might want to support both while the
> older way isn't fully deprecated yet.
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