wesm commented on PR #13557:
URL: https://github.com/apache/arrow/pull/13557#issuecomment-1179428442
I added some checks to prevent the filter implementations from running in
the 0-length chunked array cases, and a different filter test started failing:
```R
test_that("[ accepts Arrays and otherwise handles bad input", {
vec <- 11:20
a <- Array$create(vec)
ind <- c(9, 3, 5)
expect_error(
a[Array$create(ind)],
"Cannot extract rows with an Array of type double"
)
expect_as_vector(a[Array$create(ind - 1, type = int8())], vec[ind])
expect_as_vector(a[Array$create(ind - 1, type = uint8())], vec[ind])
expect_as_vector(a[ChunkedArray$create(8, 2, 4, type = uint8())], vec[ind])
filt <- seq_along(vec) %in% ind
expect_as_vector(a[Array$create(filt)], vec[filt])
expect_error(
a["string"],
"Cannot extract rows with an object of class character"
)
})
```
This is good because it's a normal array being filtered, but I'm still
perplexed why #13521 would have caused this.
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