rok commented on a change in pull request #12097:
URL: https://github.com/apache/arrow/pull/12097#discussion_r780237616
##########
File path: r/R/dplyr-funcs-datetime.R
##########
@@ -101,6 +101,10 @@ register_bindings_datetime <- function() {
Expression$create("day_of_week", x, options = list(count_from_zero =
FALSE, week_start = week_start))
})
+ register_binding("week", function(x) {
+ (call_binding("yday", x) - 1) %/% 7 + 1
+ })
+
Review comment:
I think `lubridate::week` should match `WeekOptions::USDefaults()`. [See
here](https://github.com/apache/arrow/blob/master/cpp/src/arrow/compute/api_scalar.h#L421-L425).
If needed we cal always adjust the [week compute
function](https://github.com/apache/arrow/blob/master/cpp/src/arrow/compute/kernels/scalar_temporal_unary.cc#L413-L478)
to also match lubridate.
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