RE: [External] : Re: function arguments optional default values

[Drew Adams <drew.adams@oracle.com>]

> > Does elisp support function arguments optional default values ?
> 
> I solve that problem with following:
> 
> (defun my-function (arg &optional other-arg)
>   (let* ((other-arg (or other-arg my-default)))
>     other-arg))

Simpler - no reason for another binding,
just change the value (it's a local var).

(defun my-function (arg &optional other-arg)
  (setq other-arg  (or other-arg my-default))
  ...)

or

(defun my-function (arg &optional other-arg)
  (unless other-arg (setq other-arg  my-default))
  ...)