Ian Cook created ARROW-12292:
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Summary: [R] Reconsider behavior of as.<type>.ArrowDatum functions
Key: ARROW-12292
URL: https://issues.apache.org/jira/browse/ARROW-12292
Project: Apache Arrow
Issue Type: Improvement
Components: R
Reporter: Ian Cook
Assignee: Ian Cook
As discussed at
[https://github.com/apache/arrow/pull/9942#issuecomment-815315840,] the
{{as.double()}}, {{as.integer()}}, and {{as.character()}} methods for
{{ArrowDatum}} return R vectors of the specified R types, whereas in dplyr,
these same functions perform casts to the analogous Arrow types
Compare the definitions:
* {{ArrowDatum}} methods:
[https://github.com/apache/arrow/blob/ace2bfc160e049b4edc7ffb55081cfb7210d6e43/r/R/arrow-datum.R#L139-L145]
* dplyr functions:
[https://github.com/apache/arrow/blob/f2db785c24015b102db9b268c67a6ea73c5d7e93/r/R/dplyr.R#L399-L432]
Consider whether the {{ArrowDatum}} methods should instead perform casts but
keep the data in Arrow so that the user would have to also call {{as.vector()}}
to return the data as an R vector.
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