This is an year-week-day method for the calendar_count_between()
generic. It counts the number of precision units between start and end
(i.e., the number of years).
# S3 method for class 'clock_year_week_day'
calendar_count_between(start, end, precision, ..., n = 1L)[clock_year_week_day]
A pair of year-week-day vectors. These will be recycled to their common size.
[character(1)]
One of:
"year"
These dots are for future extensions and must be empty.
[positive integer(1)]
A single positive integer specifying a multiple of precision to use.
An integer representing the number of precision units between
start and end.
# Compute the number of whole years between two dates
x <- year_week_day(2001, 1, 2)
y <- year_week_day(2021, 1, c(1, 3))
calendar_count_between(x, y, "year")
#> [1] 19 20