Get the List of Arguments of a Function in R Programming – args() Function
Last Updated :
12 Jun, 2020
args()
function in R Language is used to get the required arguments by a function. It takes function name as arguments and returns the arguments that are required by that function.
Syntax: args(name)
Parameters:
name: Function name
Returns:
- For a closure: Formal Argument list but with NULL body
- For a Primitive Function: A closure with usage and a NULL body
- For a non-function: NULL in case of not a function.
Example 1:
args(append)
args(sin)
args(paste)
|
Output:
function (x, values, after = length(x))
NULL
function (x)
NULL
function (..., sep = " ", collapse = NULL)
NULL
Example 2:
Output:
NULL
NULL
The above code returns NULL because the names passed to args()
function are not actual functions.
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