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Article #1833

odd question

#1833
From: Ted Dunning
Date: Thu, 21 Feb 1991 00:24
9 lines
597 bytes
a friend was reading an article the other day and she ran into the
following

   {S:verb:head :: Vp:head}

on the right hand side of a DCG rule.

the question is, what does the :: do?
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From: ted@nmsu.edu (Ted Dunning)
Newsgroups: comp.lang.prolog
Subject: odd question
Message-ID: <TED.91Feb20172451@kythera.nmsu.edu>
Date: 21 Feb 91 00:24:51 GMT
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Organization: Computing Research Lab
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