Explanation:The value returned by the call to function is a function. 6. You can check to see whether an R object is NULL with the _________ function.
A. is.null()
B. is.nullobj()
C. null()
D. All of the mentioned
Answer:A
Explanation:The value returned by the call to function is a function. 6. You can check to see whether an R object is NULL with the _________ function.
A. is.null() B. is.nullobj() C. null() D. All of the mentioned
Explanation:It is sometimes useful to allow an argument to take the NULL value, which might indicate that the function should take some specific action. 7. Which of the following code will print NULL ?