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Pascal J. Bourguignon  
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 More options Dec 5 2010, 5:31 pm
Newsgroups: comp.lang.lisp, comp.emacs, gnu.emacs.help
From: "Pascal J. Bourguignon" <p...@informatimago.com>
Date: Sun, 05 Dec 2010 23:31:01 +0100
Local: Sun, Dec 5 2010 5:31 pm
Subject: Re: lisp style question
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RG <rNOSPA...@flownet.com> writes:
> In article
> <6e2fe51c-ff4c-429f-b221-a3cbe23e9...@n2g2000pre.googlegroups.com>,
>  Katalin Sinkov <lispstyl...@gmail.com> wrote:

>> how to conveniently costruct the list that goes with getf ?

> You can't construct anything with GETF.  GETF is an accessor.

This is not correct.  GETF is special:

CL-USER> (let ((plist '()))
           (setf (getf plist :k1) 1
                 (getf plist :k2) 2)
           plist)
(:K2 2 :K1 1)

Setfers are able to do such things.

--
__Pascal Bourguignon__                     http://www.informatimago.com/
A bad day in () is better than a good day in {}.


 
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