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From: devinney@sunybcs.UUCP (George DeVinney)
Newsgroups: comp.lang.prolog
Subject: Re: OK, so what Prolog is good?
Message-ID: <2610@sunybcs.UUCP>
Date: Tue, 17-Mar-87 10:18:18 EST
Article-I.D.: sunybcs.2610
Posted: Tue Mar 17 10:18:18 1987
Date-Received: Thu, 19-Mar-87 06:52:31 EST
References: <473@thumper.UUCP> <473@iscuva.UUCP> <2578@sunybcs.UUCP> <382@uhccux.UUCP>
Reply-To: devinney@gort.UUCP (George DeVinney)
Distribution: na
Organization: SUNY/Buffalo Computer Science
Lines: 47
Keywords: prolog Arity Turbo

In article <382@uhccux.UUCP> todd@uhccux.UUCP (The Perplexed Wiz) writes:
>In article <2578@sunybcs.UUCP> devinney@gort.UUCP (George DeVinney) writes:
>>And you can start with the basic Arity Interpreter (I think as
>>cheap as turbo) and add other things in the ARITY package
>>if/when you need them: 
>
>The list price for the Arity Prolog Interpreter (API) is
around $400.

  $350 from ARITY but I've seen it for $309 from mail order
houses. (Check AI Expert Mag).

>not seen this student version....todd

ARITY sells what they call 'Standard Prolog' for $95 - $79
from mail order. I have not seen it either but the info 
with the full interpreter looks like it (standard) has most of the
Clocksin/Mellish predicates - at least it has the ones
for manipulating clauses (arg, functor, clause) which
are needed for serious symbolic manipulations. I believe
TURBO does not have these. (And ARITY has no typing
requirements). 

I don't think you need to be a
student to buy it but it seems aimed at someone who wants to
learn PROLOG before deciding if they want to invest more. I
don't imagine you can distribute applications you develop
with the standard or interpreter only since it would need
the interpreter to run.

ARITY has a BBS at: 617-369-5622 for ordering, questions or
to try an on-line PROLOG demo. 
They can be called voice at  617-371-1243. 

Opinion: If you're interested in learning REAL PROLOG and
 having a lot of utility at your disposal by spending a few
 bucks more later, go with ARITY. 

Disclaimer: No affiliation with anybody except myself. I
  wish that were not true as I will be graduating soon.


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