pachamaltese commented on a change in pull request #9591:
URL: https://github.com/apache/arrow/pull/9591#discussion_r584784120
##########
File path: r/R/dataset-write.R
##########
@@ -53,6 +53,17 @@
#' - `codec`: A [Codec] which will be used to compress body buffers of written
#' files. Default (NULL) will not compress body buffers.
#' @return The input `dataset`, invisibly
+#' @examples
+#' \donttest{
+#' # we can group by cyl, cyl and gear or even more variables
+#' write_dataset(mtcars, tempdir(), "feather", partitioning = "cyl"))
Review comment:
sure, I' m using "parquet", because if I leave it blank I see
```
Error in if (format %in% c("csv", "text") || any(opt_names %in% c("delim",
:
missing value where TRUE/FALSE needed
```
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