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- Newsgroups: comp.lang.prolog
- Path: sparky!uunet!mcsun!ub4b!news.cs.kuleuven.ac.be!bimbart
- From: bimbart@cs.kuleuven.ac.be (Bart Demoen)
- Subject: rational term unification and conservation of sharing
- Message-ID: <1992Dec23.164243.14195@cs.kuleuven.ac.be>
- Sender: news@cs.kuleuven.ac.be
- Nntp-Posting-Host: hera.cs.kuleuven.ac.be
- Organization: Dept. Computerwetenschappen K.U.Leuven
- Date: Wed, 23 Dec 1992 16:42:43 GMT
- Lines: 14
-
- Olivier Ridoux wrote:
- > Moral: rational term unification and conservation of sharing are
- > rather independent issues.
-
- Sure, but I didn't claim that rational term unification and conservation of
- sharing are dependent, rather that making the built-in predicates support
- cyclic terms, leads to conservation of sharing - and of course this is not
- strictly true either, because one has always the freedom to mess things up.
-
- E.g. if one makes copy_term/2 such that it can make a finite copy of a cyclic
- term, one can as well make a copy with the same internal sharing as the
- original term - and in fact I think one has messed things up if not.
-
- Bart Demoen
-