is.empty("")
is.empty(NULL)
is.empty(NA)
is.empty(c())
is.empty("none", empty = "none")
is.empty("")
is.empty(" ")
is.empty(" something ")
is.empty(c("", "something"))
is.empty(c(NA, 1:100))
is.empty(mtcars)
Run the code above in your browser using DataLab