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Date() mirrors primitive contructors in base R (double(), character() etc.)
Date()
double()
character()
is.Date(x)Date(length = 0L)NA_Date_
Date(length = 0L)
NA_Date_
an R object
A non-negative number specifying the desired length. Supplying an argument of length other than one is an error.
An object of class Date of length 1.
Date
is.instant(), is.timespan(), is.POSIXt(), POSIXct()
is.instant()
is.timespan()
is.POSIXt()
POSIXct()
# NOT RUN { is.Date(as.Date("2009-08-03")) # TRUE is.Date(difftime(now() + 5, now())) # FALSE # }
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