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Author Re: Announcing a new release of Lisp1 #5
Stefan Ram

2008-01-29, 7:41 pm

Pascal Costanza <pc@p-cos.net> writes:
>The car position defines the meaning of a form,
>while the cdr positions don't.

The /meaning/ of, for example,

(+ 1 2)

is »The sum of 1 and 2.«. It obviously is
»defined« by both the car, cadr, and the caddr.

The /lookup/ for it is done anchored by the car.

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