ianmcook commented on a change in pull request #9805:
URL: https://github.com/apache/arrow/pull/9805#discussion_r602309944
##########
File path: r/R/dplyr.R
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@@ -279,6 +280,19 @@ arrow_eval <- function (expr, mask) {
}
invisible(structure(msg, class = "try-error", condition = e))
})
+ # Check that the evaluated expression has one of the expected classes or
types
+ if (!inherits(out, c("array_expression", "Expression", "try-error")) &&
+ !typeof(out) %in% c("logical", "integer", "double", "character",
"NULL")) {
Review comment:
I'll move these checks into a separate function and call it after
`arrow_eval()` in the relevant dplyr verb methods.
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