jonkeane commented on a change in pull request #12707:
URL: https://github.com/apache/arrow/pull/12707#discussion_r837944089
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File path: r/R/dplyr-funcs-datetime.R
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@@ -300,6 +314,34 @@ register_bindings_duration <- function() {
build_expr("cast", x, options = cast_options(to_type = duration(unit =
"s")))
})
+ register_binding("decimal_date", function(date) {
+ y <- build_expr("year", date)
+ start <- call_binding("make_datetime", year = y, tz = "UTC")
+ sofar <- call_binding("difftime", date, start, units = "secs")
+ total <- call_binding(
+ "if_else",
+ build_expr("is_leap_year", date),
+ call_binding("as.integer64", 31622400L), # number of seconds in a leap
year (366 days)
+ call_binding("as.integer64", 31536000L) # number of seconds in a
regular year (365 days)
Review comment:
What kind of scale are those numbers on? Could you post or link to the
code you used to run that, I would be interested to see how you got there!
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