ianmcook commented on a change in pull request #10261:
URL: https://github.com/apache/arrow/pull/10261#discussion_r628235553
##########
File path: r/R/record-batch.R
##########
@@ -148,13 +148,20 @@ RecordBatch$create <- function(..., schema = NULL) {
if (length(arrays) == 1 && inherits(arrays[[1]], c("raw", "Buffer",
"InputStream", "Message"))) {
return(RecordBatch$from_message(arrays[[1]], schema))
}
+
# Else, list of arrays
# making sure there are always names
if (is.null(names(arrays))) {
names(arrays) <- rep_len("", length(arrays))
}
stopifnot(length(arrays) > 0)
+ # Preserve any grouping
Review comment:
Oh ok, understood, thanks. This is a quirk of the `count_fields`
function I guess. Thanks!
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