Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!mcsun!ukc!edcastle!aiai!jeff
From: jeff@aiai.ed.ac.uk (Jeff Dalton)
Newsgroups: comp.lang.lisp
Subject: Re: Adding items to the end of a list.
Message-ID: <3372@skye.ed.ac.uk>
Date: 5 Sep 90 21:21:46 GMT
References: <1990Sep5.011910.1177@mentor.com>
Reply-To: jeff@aiai.UUCP (Jeff Dalton)
Organization: AIAI, University of Edinburgh, Scotland
Lines: 15

In article <1990Sep5.011910.1177@mentor.com> plogan@mentor.com (Patrick Logan) writes:
>I see a lot of LISP code building lists backwards and then reversing
>them. I don't know if I've ever seen any C code doing that. Is it too
>easy to write sloppy code in LISP? I don't think it is any more
>difficult to write efficient list manipulations in Scheme than it is
>in C.

How soon they forget.  What do you think `tconc' (Interlisp,
Franz Lisp, etc.) was for?

For a more modern approach, look at Appendix B, "Generators and
Gatherers" in Guy Steele Jr.'s CLtL II.  (It's similar to your
object-oriented technique.)

-- Jeff