edponce commented on a change in pull request #10196:
URL: https://github.com/apache/arrow/pull/10196#discussion_r626093317
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File path: r/R/expression.R
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@@ -56,13 +56,9 @@ build_array_expression <- function(FUN,
args = list(...),
options = empty_named_list()) {
if (FUN == "-" && length(args) == 1L) {
- # Unary -, i.e. just make it negative, and somehow this works
if (inherits(args[[1]], c("ArrowObject", "array_expression"))) {
- # Make it be 0 - arg
- # TODO(ARROW-11950): do this in C++ compute
- args <- list(0L, args[[1]])
+ return(build_array_expression("negate", args[[1]]))
Review comment:
I would think that using the checked versions for language bindings is
more desirable as you want errors to be triggered ASAP. The unchecked versions
should be used knowing the wrap around behavior may occur. I think of it as
unchecked = safe math and checked = true math
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