paleolimbot commented on code in PR #212:
URL: https://github.com/apache/arrow-nanoarrow/pull/212#discussion_r1221975382
##########
r/R/convert-array-stream.R:
##########
@@ -71,8 +71,6 @@ convert_array_stream <- function(array_stream, to = NULL,
size = NULL, n = Inf)
}
if (n_batches == 0L && is.data.frame(to)) {
- to[integer(0), , drop = FALSE]
- } else if (n_batches == 0L && is.data.frame(to)) {
Review Comment:
I wonder if what I meant here was `if (n_batches == 0L &&
!is.data.frame(to))`? I'm pretty sure the first of these two shouldn't return
`NULL`:
``` r
library(nanoarrow)
stream <- basic_array_stream(batches = list(), schema = na_int32())
convert_array_stream(stream)
#> NULL
stream <- basic_array_stream(batches = list(), schema = na_struct(list(x =
na_int32())))
convert_array_stream(stream)
#> [1] x
#> <0 rows> (or 0-length row.names)
```
<sup>Created on 2023-06-07 with [reprex
v2.0.2](https://reprex.tidyverse.org)</sup>
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