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Re: Quick pcase question
From: |
Eric Abrahamsen |
Subject: |
Re: Quick pcase question |
Date: |
Wed, 02 Mar 2016 19:18:54 +0800 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux) |
Michael Heerdegen <michael_heerdegen@web.de> writes:
> Eric Abrahamsen <eric@ericabrahamsen.net> writes:
>
>> (pcase tst
>> (`(symbolla . ,(and x (pred stringp)))
>> (message "cdr is a string: %s" x)))
>>
>> Is the ",(and x (pred stringp))" part really the simplest way of doing
>> that?
>
> Yes, I think so.
>
> How could it be much simpler (there is not much redundancy in that
> expression)?
It's not so much the simplicity, I guess, as the intuitiveness -- "(and x"
looks like a test to me, not an assignment. My brain would prefer:
(,x (pred stringp))
But there's no reason to listen to my brain :)
Thanks,
Eric
- Quick pcase question, Eric Abrahamsen, 2016/03/02
- Re: Quick pcase question, Michael Heerdegen, 2016/03/02
- Re: Quick pcase question,
Eric Abrahamsen <=
- Re: Quick pcase question, Michael Heerdegen, 2016/03/02
- Re: Quick pcase question, Eric Abrahamsen, 2016/03/02
- Re: Quick pcase question, Michael Heerdegen, 2016/03/02
- Re: Quick pcase question, Phillip Lord, 2016/03/02
- Re: Quick pcase question, Eric Abrahamsen, 2016/03/02
- Re: Quick pcase question, Stefan Monnier, 2016/03/02
- Re: Quick pcase question, Phillip Lord, 2016/03/02
- Re: Quick pcase question, Eric Abrahamsen, 2016/03/02
- Re: Quick pcase question, Phillip Lord, 2016/03/03
Re: Quick pcase question, Phillip Lord, 2016/03/02