Test whether a partial_time object is incomplete
has_partial(
x,
...,
components = c("year", "month", "day", "hour", "min", "sec", "secfrac", "tzhour",
"tzmin")
)
A logical vector indicating whether each element of a partial_time
has any missing datetime fields.
a partial_time object to test for incompleteness
additional arguments unused
components to include in testing