thisisnic commented on a change in pull request #10507:
URL: https://github.com/apache/arrow/pull/10507#discussion_r657098046
##########
File path: r/R/dplyr-functions.R
##########
@@ -442,3 +442,37 @@ nse_funcs$strptime <- function(x, format = "%Y-%m-%d
%H:%M:%S", tz = NULL, unit
Expression$create("strptime", x, options = list(format = format, unit =
unit))
}
+
+nse_funcs$wday <- function(x, label = FALSE, abbr = TRUE, week_start =
getOption("lubridate.week.start", 7)) {
+ if (label) {
+ arrow_not_supported("Label argument")
+ }
+ offset <- get_date_offset(week_start)
+ Expression$create("add", Expression$create("day_of_week", x),
Expression$scalar(offset))
+}
+
+#' Get date offset
+#'
+#' Arrow's `day_of_week` kernel counts from 0 (Monday) to 6 (Sunday), whereas
+#' `lubridate::wday` counts from 1 to 7, and allows users to specify which day
+#' of the week is first (Sunday by default). This function converts the
returned
Review comment:
Done
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