is_iso_year_week_day {clock} | R Documentation |
x
a iso-year-week-day?Check if x
is a iso-year-week-day.
is_iso_year_week_day(x)
x |
An object. |
Returns TRUE
if x
inherits from "clock_iso_year_week_day"
,
otherwise returns FALSE
.
is_iso_year_week_day(iso_year_week_day(2019))