nealrichardson commented on a change in pull request #12432:
URL: https://github.com/apache/arrow/pull/12432#discussion_r817032092
##########
File path: r/R/arrow-datum.R
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@@ -70,13 +70,51 @@ as.vector.ArrowDatum <- function(x, mode) {
#' @export
Ops.ArrowDatum <- function(e1, e2) {
- if (.Generic == "!") {
- eval_array_expression(.Generic, e1)
- } else if (.Generic %in% names(.array_function_map)) {
- eval_array_expression(.Generic, e1, e2)
- } else {
- stop(paste0("Unsupported operation on `", class(e1)[1L], "` : "),
.Generic, call. = FALSE)
+ if (missing(e2)) {
+ switch(
+ .Generic,
+ "!" = return(eval_array_expression(.Generic, e1)),
+ "+" =, "-" = return(eval_array_expression(.Generic, 0L, e1)),
Review comment:
There is a `negate_checked` function we use elsewhere for unary `-` that
you can use here
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