Check of Length 0 or Missing
DESCRIPTION:
Check to see whether the input is either
NA
or a vector of length 0.
USAGE:
is.missing(x)
REQUIRED ARGUMENTS:
- x
-
input to check.
VALUE:
T if the input is a vector of length 0;
is.na(x)
otherwise.
EXAMPLES:
is.missing(numeric(0))
is.missing(NA)
is.missing(c(1,2,3,NA,5))