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Re: clarification of my previous ONCE-ONLY bug
- To: (BUG LISPM) at MIT-AI, DLW at MIT-AI
- Subject: Re: clarification of my previous ONCE-ONLY bug
- From: BIL@MIT-MC
- Date: Wed ,14 Jan 82 21:50:48 EDT
(defmacro pairp (x)
(once-only (x)
`(and ,x (listp ,x))))
Then, in an mexp loop,
(pairp (car x)) =>
((lambda ()
(and G0471 (listp G0471)))
)