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Article #3220

Yet another stupid question

#3220
From: D. Ranson CNET
Date: Thu, 07 Apr 1988 07:12
7 lines
490 bytes
What is the difference between the ?- and :- operators in front of a
goal? I have seen both used in several Prolog books or manuals, with
no discernable pattern, and without any explanation.

     Daniel Ranson
     ...!mcvax!inria!crcge1!ranson
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Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!mcvax!inria!crcge1!ranson
From: ranson@crcge1.UUCP (D. Ranson CNET)
Newsgroups: comp.lang.prolog
Subject: Yet another stupid question
Message-ID: <3379@crcge1.UUCP>
Date: 7 Apr 88 07:12:48 GMT
Lines: 7