thisisnic commented on a change in pull request #10343:
URL: https://github.com/apache/arrow/pull/10343#discussion_r636072713
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File path: r/R/compute.R
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@@ -229,6 +233,25 @@ all.ArrowDatum <- function(..., na.rm = FALSE){
#' as `x` with the (0-based) indexes into `table`. `is_in()` returns a
#' `boolean`-type `Array` of the same length as `x` with values indicating
#' per element of `x` it it is present in `table`.
+#' @examples
+#' # note that the returned value is 0-indexed
+#' cars_tbl <- Table$create(name = rownames(mtcars), mtcars)
+#' match_arrow(Array$create("Mazda RX4 Wag"), cars_tbl$name)
Review comment:
Good catch there - this has been implemented for all ArrowDatum objects.
I also had a read of the docs for the C++ compute function and experimented
with different objects, and it appears that the output type == the x input
type, so I have documented this as well now.
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