ianmcook commented on a change in pull request #11156:
URL: https://github.com/apache/arrow/pull/11156#discussion_r708615330
##########
File path: r/R/util.R
##########
@@ -58,10 +58,22 @@ r_symbolic_constants <- c(
"NA_integer_", "NA_real_", "NA_complex_", "NA_character_"
)
+is_function <- function(expr, name) {
+ if (!is.call(expr)) {
+ return(FALSE)
+ } else {
+ if (deparse(expr[[1]]) == name) {
+ return(TRUE)
+ }
+ out <- lapply(expr, is_function, name)
+ }
+ any(vapply(out, isTRUE, TRUE))
+}
+
all_funs <- function(expr) {
# Don't use setdiff so that we preserve duplicates
Review comment:
IIRC there was some other reason that we didn't want to dedupe the names
in this
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