R: Argument List of a Function

args {base} | R Documentation

## Argument List of a Function

### Description

Displays the argument names and corresponding default values of a function or primitive.

### Usage

    args(name)

### Arguments

`name` | a function (a closure or a primitive). If `name` is a character string then the function with that name is found and used.

### Details

This function is mainly used interactively to print the argument list of a function. For programming, consider using `formals` instead.

### Value

For a closure, a closure with identical formal argument list but an empty (`NULL`) body.

For a primitive, a closure with the documented usage and `NULL` body. Note that some primitives do not make use of named arguments and match by position rather than name.

`NULL` in case of a non-function.

### References

Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.

### See Also

`formals`, `help`.

### Examples

    args(c)
    args(graphics::plot.default)

[Package base version 3.1.2 Index]