Re: How do you say "ignore"?

[whutt!davel%att.att.com@RELAY.CS.NET]

	From arpa!ads.com!rshu Tue Dec 12 00:57:00 1989
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	From: rshu@ads.com (Richard Shu)
	Newsgroups: mail.info-slug
	Subject: Re: How do you say "ignore"?
	Message-Id: <10034@zodiac.ADS.COM>
	Date: 12 Dec 89 05:47:01 GMT
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	Reply-To: rshu@ads.com (Richard Shu)
	Organization: Advanced Decision Systems, Mt. View, CA (415) 960-7300
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	In article <8912120405.AA01120@diamond.STC.LOCKHEED.COM> "RDP%ALAN.LAAC-AI.Dialnet.Symbolics.COM"%ALAN.kahuna.DECNET.LOCKHEED.COM@WARBUCKS.AI.SRI.COM writes:
	
	>
	>Does anyone have a standard idiom that they use when ignoring variables
	>in a destructuring pattern in LOOP?
	>
	>For example:
	>
	>(DEFUN IGNORE-TEST ()
	>  (LOOP FOR (X IGNORE) IN '((A B) (C D))
	>	COLLECT X))
	>
	>The way this is currently written the compiler will complain:
	>
	>For Function IGNORE-TEST
	>  While compiling (SETQ IGNORE (CAR #:TEMP)):
	>    The variable IGNORE is unknown and has been assumed SPECIAL
	>
	
	
	(DEFUN IGNORE-TEST ()
	  (LOOP FOR (X NIL) IN '((A B) (C D))
		COLLECT X))
	
	does the trick.

But
(DEFUN Ignore-Test ()
   (LOOP for (x) in '((a b) (c d))
         collect x))
will also work.

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   {backbone!}att!whutt!davel which is davel@whutt.att.com