Re: discontinuous predicate warning from gnuprolog v1.3.0

Daniel Diaz <[email protected]>
Newsgroups gmane.comp.gnu.prolog.general
Message-ID <[email protected]>
Add to your prolog fial a directive

:- discontiguous(listensToMusic/1).

before the first clause.

Daniel

Bernardo Elayda a écrit :

Hello,

I'm trying to use this very simple Prolog testcase with Gnu
Prolog v1.3.0:

1 listensToMusic(mia).

2 happy(yolanda).

3 playsAirGuitar(mia) :- listensToMusic(mia).

4 playsAirGuitar(yolanda) :- listensToMusic(yolanda).

5 listensToMusic(yolanda):- happy(yolanda).

When the above code is loaded(w/o the line numbers), the
interpreter says:

| ?- [kb2].

compiling /home/captain/Junk/kb2.pl for byte code...

/home/captain/Junk/kb2.pl:5: warning: discontiguous predicate
listensToMusic/1 - clause ignored

/home/captain/Junk/kb2.pl compiled, 5 lines read - 729 bytes written, 6
ms

And if one runs the query playsAirGuitar(yolanda), the knowledge
base did ignore clause number 5. What is wrong with line number 5?

This same testcase with other versions of Prolog is processed
correctly; clause number 5 isn't ignored.

tia,

Bernie

--

Ce message a été vérifié par
MailScanner

pour des virus ou des polluriels et rien de

suspect n'a été trouvé.

----------

_______________________________________________
Users-prolog mailing list
[email protected]
http://lists.gnu.org/mailman/listinfo/users-prolog

--

Ce message a été vérifié par
MailScanner

pour des virus ou des polluriels et rien de

suspect n'a été trouvé.

_______________________________________________
Users-prolog mailing list
[email protected]
http://lists.gnu.org/mailman/listinfo/users-prolog
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.