How to Apply the missing() Function in R (2 Examples)

In this tutorial, I’ll illustrate how to apply the missing function in the R programming language.

Introducing Example Data

f <- function(input) {        # Create user-defined function
  return(missing(input))
}

Example 1: Apply missing() Function without Formal Argument

f()                           # using missing function
# [1] TRUE

Example 2: Apply missing() Function with Formal Argument

f(input = 10)                 # using missing function
# [1] FALSE