Re: `append' vs. `nconc'

[Teemu Likonen]

Emanuel Berg [2015-12-31 04:50:19+01] wrote:

> Teemu Likonen <tlikonen@iki.fi> writes:
>> Don't modify a list created with '(...). Use (list ...) instead.
>
> What about the elements of the lists? If they are themselves lists,
> can they be created with ' or is this rule a "recursive descent" one?

NCONC doesn't touch the elements (i.e., CAR values of conses) so this is
fine:

    (setq foo (nconc (list '(a . 1) '(b . 2)) foo))

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