Dewey Dunnington created ARROW-16444:
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Summary: [R] Implement user-defined scalar functions in R bindings
Key: ARROW-16444
URL: https://issues.apache.org/jira/browse/ARROW-16444
Project: Apache Arrow
Issue Type: Improvement
Components: R
Reporter: Dewey Dunnington
In ARROW-15639, user-defined (scalar) functions were implemented for Python. In
ARROW-15841 and ARROW-15168 we developed some tooling and strategies for
calling into R from non-R threads, so in theory we should be able to mirror the
Python implementation (possibly with the constraint that we have to provide a
way to return a {{Table}} instead of a {{RecordBatchReader}} if there are any
user-defined functions, otherwise we can't guarantee the existence of an event
loop to do the R evaluating?).
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