args                  package: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. For programming, use
     'formals' instead.

Value:

     A function with identical formal argument list but an empty body
     if given a closure.

     A function with the documented usage for a primitive: note that in
     almost all cases primitives do not make use of named arguments and
     match by position rather than name.  ('rep' and 'seq.int' are
     exceptions.)

     '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)

