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- Newsgroups: comp.sys.mac.system
- Path: sparky!uunet!europa.asd.contel.com!darwin.sura.net!udel!gvls1!dave
- From: dave@prc.unisys.com (David Lee Matuszek)
- Subject: Re: Prolog wanted for the Mac
- Message-ID: <1992Sep2.150849.25307@gvl.unisys.com>
- Sender: news@gvl.unisys.com (IEE news user)
- Nntp-Posting-Host: yggdrasil.prc.unisys.com
- Organization: Paoli Research Center - Paoli, PA
- References: <87589@netnews.upenn.edu>
- Date: Wed, 2 Sep 1992 15:08:49 GMT
- Lines: 56
-
- In article <87589@netnews.upenn.edu> breck@saul.cis.upenn.edu (Breck Baldwin) writes:
- >Would folks be kind enough to reccomend decent prologs for the Mac.
- >MacConnections says there are none currently available, but I hope
- >that they are just misinformed.
-
- They probably just mean that they have none available. Their
- salespersons are generally well-informed, but can't be expected to
- know a lot about products they don't carry.
-
- AAIS Prolog is excellent but expensive--I think it's currently about
- $300. (I have an older version that does not run under System 7, and
- have decided not to upgrade, since I seldom use Prolog at home any more.)
- This is available from APDA.
-
- LPA Prolog is flashier, with neat tools, but the authors really don't
- understand about large programs. We tried it here at work, and it
- couldn't handle the job we needed it for (just one example: there is
- no way to increase atom space beyond 32K). If you are only interested
- in small to medium programs, this might suit your needs. I believe
- Quintus bought this, but I'm not sure -- try sales@quintus.com or
- 415-813-3800.
-
- Open Prolog is a shareware program, still pretty much under
- development. I looked at it briefly, and it looked like a good start,
- but still had a long ways to go. Available from sumex. (Sorry, I
- don't have a full path name.)
-
- MacProlog is a commercial product, with a demo version available at
- sumex. (Again, I don't have a full path name.) I looked at it only
- briefly, and it looked somewhat confusing; but this was just a quick
- impression, not to be relied upon.
-
- There are older products called ExperProlog and Prolog II. I looked
- at these fairly carefully a couple of years ago. I thought they were
- nasty.
-
- IMPORTANT NOTE: If you are interested in using Prolog to develop
- commercial software or shareware, you MUST look into licensing a
- runtime system that you can distribute. Due to the nature of Prolog
- (which contains a full Prolog interpreter as part of the language),
- this is much trickier than with other languages, and many Prolog
- implementations will not support it. You can license such a system
- for AAIS Prolog, but it's very expensive. Unfortunately, this makes
- Prolog a very bad choice for small-scale commercial programming
- :-( :-( :-( :-( :-( :-( :-( .
-
- Anyone out there care to fill in the gaps in the above, or supply more
- recent information?
-
- -- dave
-
- --
- And the President put his hand on my shoulder and said: "Dan,
- I _knew_ Spiro Agnew. He was a friend of mine. And Dan...
- You're no Spiro Agnew!"
- -- Vice President Dan Quayle pwd
-