thisisnic opened a new issue, #39446:
URL: https://github.com/apache/arrow/issues/39446
### Describe the enhancement requested
I was discussing an example of some code which raises an error; something
like:
``` r
library(arrow)
library(dplyr)
# convert mpg to kml and round
mpg_to_kml_rounded <- function(mpg){
round(mpg*0.425, 2)
}
InMemoryDataset$create(mtcars) %>%
mutate(kml = mpg_to_kml_rounded(mpg))
#> Error: Expression mpg_to_kml_rounded(mpg) not supported in Arrow
#> Call collect() first to pull data into R.
```
It's in some writing I'm doing about UDFs, but Neal pointed out that it
would be nice if we could support this case though without the full UDF
overhead. Like, simple_udf() takes a function and makes it evaluate in the
binding environment, so that in this example, `round()` evaluates to the
version we have in our binding environment.
### Component(s)
R
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