Re: Another pcase-lambda

[Michael Heerdegen <michael_heerdegen@web.de>]

Mark Oteiza <mvoteiza@udel.edu> writes:

> (defmacro case-lambda (&rest spec)
>   "Return an arbitrary arity function."
>   (declare (indent 0) (debug (&rest (pcase-QPAT body))))
>   (let ((args (make-symbol "args")))
>    `(lambda (&rest ,args)
>       (pcase-exhaustive ,args ,@spec))))

I think I would prefer to spell it out and use the expanded form
instead.  It's nice, but I'm not convinced it would be worth adding.

OTOH, as an occasional user of `pcase-lambda' I know that it's a bit
cumbersome to use.  But `case-lambda' defers all calculation into the
argument list - I'm not sure if this is so useful all the time.

BTW, what I sometimes do miss is `pcase-defun'.


Michael.