[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: pcase-dolist

From: Thierry Volpiatto
Subject: Re: pcase-dolist
Date: Thu, 09 Jul 2015 15:40:05 +0200

Tassilo Horn <address@hidden> writes:

> Thierry Volpiatto <address@hidden> writes:
>>> As I've said, you can use cdr-matching with a don't-care-pattern,
>>> e.g.,
>>>   (pcase-let ((`(,a ,b . ,_) (file-attributes "~/.emacs")))
>>>     (list a b))
>>> which clearly states that you know that the list returned by
>>> `file-attributes' has more than two elements but you are only interested
>>> in the first two.
>> Ah! Ok so the dont-care-pattern handle all the remaining elements.
> No, the crucial part is the dot separating the front from the rest of
> the list.  With `(,a ,b . ,r) the list of the 8 remaining file
> attributes would be bound to r.  When you don't need those, you can omit
> the binding with the don't care pattern.

Yes it's what I understood.


Get my Gnupg key:
gpg --keyserver pgp.mit.edu --recv-keys 59F29997 

reply via email to

[Prev in Thread] Current Thread [Next in Thread]