Question

________ function is usually used inside another function and throws a warning whenever a particular package is not found.

(a) Dplyr

(b) Require

(c) Coin

(d) Sample

I had been asked this question in an internship interview.

Question is from Functions topic in portion Control Structures, Functions, Scoping Rules, Loop Functions and Debugging of R Programming

Answer 1

Correct option is (b) Require

Easiest explanation: Require () function is usually used inside the other function and gives a warning whenever a particular package is not found. Library () function will give an error message if the desired package is not loaded.