Ray Dillinger scripsit:

> That said, I strongly suspect most implementations concerned with
> speed will prefer to have them be defined as machine-code vectors,

What do you mean by "machine-code vectors"?  If you mean compiled code,
then compiling (define (cddr x) (cdr (cdr x))) should produce the
obvious compiled code.

--
But you, Wormtongue, you have done what you could for your true master.  Some
reward you have earned at least.  Yet Saruman is apt to overlook his bargains.
I should advise you to go quickly and remind him, lest he forget your faithful
service.  --Gandalf             John Cowan <cowan@ccil.org>

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