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What's the "+?" mean to a prolog predicate in manual?
From: |
Calvin Liu |
Subject: |
What's the "+?" mean to a prolog predicate in manual? |
Date: |
Sun, 09 May 2004 13:43:47 +0800 |
Hi, there,
I'm a newbie for prolog. Here's a question, should be a piece of cake
for you.
For example, in predicate "findall(?term, +callable_term, ?list)",
what's the "?+" mean?
Thanks.
Calvin
- What's the "+?" mean to a prolog predicate in manual?,
Calvin Liu <=