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Article <NIL-20240127140420@ram.dialup.fu-berlin.de>
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From: ram@zedat.fu-berlin.de (Stefan Ram)
Newsgroups: comp.lang.lisp
Subject: Re: NIL cons cell
Date: 27 Jan 2024 13:04:38 GMT
Organization: Stefan Ram
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Daniel Cerqueira <dan.list@brilhante.top> writes:
>Notice on the representation of NIL. Is this always an empty cons cell?

  NIL is a special value that is /not/ the same as `(NIL . NIL),
  which is a dotted pair ("cell") with its CAR and CDR being NIL.

  The notation `() for NIL does /not/ mean that NIL is represented
  by an empty cons cell.

  `(1 2) is `( 1 . ( 2 . NIL )).