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Posted to jira@arrow.apache.org by "Nicola Crane (Jira)" <ji...@apache.org> on 2022/10/04 18:54:00 UTC
[jira] [Updated] (ARROW-17366) [R] Support purrr-style lambda functions in .fns argument to across()
[ https://issues.apache.org/jira/browse/ARROW-17366?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Nicola Crane updated ARROW-17366:
---------------------------------
Description:
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.
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.
was:
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.
> [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
> Assignee: Nicola Crane
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h
> 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.
> 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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