NULL null as.null(x) is.null(x)
NULL and null represent the null object in R. as.null ignores its argument and returns the value null. is.null returns true if its argument is null and false otherwise.
null represent the null object in R. as.null ignores its argument and returns the value null. is.null returns true if its argument is null and false otherwise.
as.null ignores its argument and returns the value null. is.null returns true if its argument is null and false otherwise.
null. is.null returns true if its argument is null and false otherwise.
is.null returns true if its argument is null and false otherwise.
true if its argument is null and false otherwise.
null and false otherwise.
false otherwise.