Nicola Crane created ARROW-17948:
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Summary: [R] arrow_eval user-defined generic functions
Key: ARROW-17948
URL: https://issues.apache.org/jira/browse/ARROW-17948
Project: Apache Arrow
Issue Type: Improvement
Components: R
Reporter: Nicola Crane
ARROW-14071 covers evaluating user-defined functions, but once this is
implemented, would it be possible to evaluate generics? Here's an example of
how that works in dplyr from a [Stack Overflow
question|https://stackoverflow.com/questions/73950714/is-it-possible-to-use-generics-in-apache-arrow]:
{code:r}
library(dplyr)
df <- data.frame(a = c("these", "are", "some", "strings"),
b = 1:4)
boop <- function(x, ...) UseMethod("boop", x)
boop.numeric <- function(x) mean(x, na.rm = TRUE)
boop.character <- function(x) mean(nchar(x), na.rm =TRUE )
df %>% summarise(across(everything(), boop))
{code}
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