rok commented on code in PR #13440:
URL: https://github.com/apache/arrow/pull/13440#discussion_r923873308
##########
r/R/dplyr-funcs-datetime.R:
##########
@@ -209,6 +209,13 @@ register_bindings_datetime_components <- function() {
build_expr("month", x)
})
+ register_binding("lubridate::qday", function(x) {
+ # We calculate day of quarter by flooring timestamp to beginning of
quarter and
+ # calculating days between beginning of quarter and timestamp/date in
question.
+ floored_x <- build_expr("floor_temporal", x, options = list(unit = 9L))
+ build_expr("days_between", floored_x, x) + Expression$scalar(1L)
Review Comment:
@jonkeane that's a fair question especially since documentation on `qday` is
not really available.
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