Subject: Re: novice: mapcan use?
From: (Rob Warnock)
Date: Sat, 03 Sep 2005 22:01:11 -0500
Newsgroups: comp.lang.lisp
Message-ID: <>
Pascal Costanza  <> wrote:
| It's a pity that both solutions have to do an extra pass through the 
| processed list as a last step. It would be nice if there were a way to 
| avoid that...

There is, but it involves keeping your own tail-pointer to
the list you're (manually) COLLECT'ing, and then RPLACD the
tail to point to the rest...


Rob Warnock			<>
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