Check if an Object is a Call in R Programming – is.call() Function

is.call() function in R Language is used to determine whether x is a call or not.

Syntax: is.call(x)

Parameters:
x: an arbitrary R object

Example 1:

# R program to illustrate
# is.call function

# Calling is.call() function
is.call(call)

Output:

[1] FALSE

Example 2:

# R program to illustrate
# is.call function

# Calling is.call() function
is.call(call("sin", 23))

Output:

[1] TRUE