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From: Mark Oteiza <mvoteiza@udel.edu>
To: Michael Heerdegen <michael_heerdegen@web.de>
Cc: Stefan Monnier <monnier@iro.umontreal.ca>, emacs-devel@gnu.org
Subject: Re: Another pcase-lambda
Date: Fri, 22 Sep 2017 17:37:07 -0400	[thread overview]
Message-ID: <20170922213707.iujgqjjrg4vxcf4w@logos.localdomain> (raw)
In-Reply-To: <87tvzwz3d2.fsf@web.de>

On 21/09/17 at 11:40am, Michael Heerdegen wrote:
> 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.

Thanks.  I just always expect pcase-lambda to behave more like pcase,
hence I wrote this.

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

Was that a thing that existed?



  reply	other threads:[~2017-09-22 21:37 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-09-19  0:56 Another pcase-lambda Mark Oteiza
2017-09-21 11:40 ` Michael Heerdegen
2017-09-22 21:37   ` Mark Oteiza [this message]
2017-09-22 21:50     ` Clément Pit-Claudel
2017-09-23 14:25     ` Michael Heerdegen
2017-09-23 14:29       ` Stefan Monnier
2017-09-23 15:31         ` Michael Heerdegen
2017-09-28 21:11         ` Ted Zlatanov
2017-10-04 11:03           ` Michael Heerdegen
2017-10-04 16:12             ` Ted Zlatanov
2017-10-05  3:13               ` Stefan Monnier

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