is.null.na: Function to check whether an object is NA or NULL
Usage
is.null.na(x, negating = FALSE)
Value
Logical, depending on negating:
if negating is FALSE, it returns TRUE if x is NA or NULL;
if negating is TRUE, it returns TRUE if x is neither NA nor NULL.
Arguments
- x
Object on which to operate
- negating
Whether to return the negation of the result
Author
Telarico, Fabio Ashtar