is_date: Utility functions for checking if date or datetime
Description
Utility functions for checking if date or datetime
Usage
is_date(x)is_datetime(x)
is_time(x)
is_time_or_num(x)
Arguments
- x
Time variable.
Can be a Date
, POSIXt
, numeric
, integer
,
yearmon
, yearqtr
, year_month
or year_quarter
.