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Re: Side effects of `sort'
From: |
Stefan Monnier |
Subject: |
Re: Side effects of `sort' |
Date: |
Thu, 01 Mar 2012 17:25:07 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.92 (gnu/linux) |
> Lisp doesn't really have access to "the input list" in any real sense:
> (sort (identity x))
> do you expect x to be rebound?
It doesn't hav access to `x' but it has access to the list, obviously.
If the input is nil, the output is nil, and if the input is a cons, the
output could be the same cons. It just means that `sort' would have
to fiddle not only with `cdr's but also with the `car's.
Not worth the trouble, tho.
Stefan