POSIXct()
mirrors primitive contructors in base R (double()
,
character()
etc.)
is.POSIXt(x)
is.POSIXlt(x)
is.POSIXct(x)
POSIXct(length = 0L, tz = "UTC")
NA_POSIXct_
An object of class POSIXct
(inherits from POSIXt
) of length 1.
an R object
A non-negative number specifying the desired length. Supplying an argument of length other than one is an error.
a timezone (defaults to "utc")
TRUE if x is a POSIXct or POSIXlt object, FALSE otherwise.
is.POSIXt(as.Date("2009-08-03"))
#> [1] FALSE
is.POSIXt(as.POSIXct("2009-08-03"))
#> [1] TRUE