Mihai Fonoage -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of Vladimir Mihailenko Sent: Wednesday, October 28, 2009 11:38 AM To: [hidden email] Subject: Re: [SWIPL] Newbie: common Syntax error: I suspect that it's an editor problem, people pressing the right key and getting the wrong character. Good for it! > > > But there is nothing "smart" about it, just a couple of 100s of LOC to > implement some obvious source to source transformations. Mihai Fonoage -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Vladimir Mihailenko Sent: Wednesday, October 28, 2009 11:38 AM To: [email protected] Subject: Re: [SWIPL] Newbie: common Syntax error: Operator expected Thank useful reference
Thu, 29 Sep 2005 17:42:06 GMT Joost Kremer#7 / 7 operator expected problem Quote: >> > I save the rule and fact in a file: >> > rev(,). >> > is_faster(F,S,[F,S,[_|Rest]]):- is_faster[F,S,Rest). Mihai Fonoage 2009-10-28 15:59:43 UTC PermalinkRaw Message It should be X =< Y.Mihai Fonoage-----Original Message-----From: email@example.com[mailto:firstname.lastname@example.org] On Behalf Of Vladimir MihailenkoSent: Wednesday, October 28, 2009 11:38 AMTo: email@example.comSubject: Re: [SWIPL] Newbie: of Computer Science, University of Beira Interior 6201-001 Covilhã, Portugal Office 3.18 Ext. 3276 Phone: +351 275319891 Fax: +351 275319899 Email:
Fuchs Institut fr Informatik Universit?t Zrich Mon, 26 Sep 2005 00:34:39 GMT Martin Sondergaar#3 / 7 operator expected problem Quote:> I save the rule and fact in a file: > of Computer Science, University of Beira Interior 6201-001 Covilhã, Portugal Office 3.18 Ext. 3276 Phone: +351 275319891 Fax: +351 275319899 Email:
Here is an example: kb.clauses_not_together.pl. Norbert E. Next, it should be ableto reclaim the local space (not yet possible, but I see no good reasonwhy this cannot be done). Arguments Are Not Sufficiently Instantiated What should I fix to run under SWI-Prolog?
And you cancombine it with giving advice to the application programmer.Runtime optimizations slow down another phase in the developmentcycle, and you might discover late a performance problem, because itwas not covered Alas, not in SWI. –false Apr 29 '12 at 22:14 SWI is fine: ?- compare(X,3.0,1). conc([H|T], L, [H|T1]):–conc(T,L,T1). Check This Out If you are compiling static predicates, where the entire predicate has to be removed and replaced as a whole, then predicate-at-a-time makes sense.
Cheers Bart Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm_______________________________________________ SWI-Prolog mailing list [hidden email] https://mailbox.iai.uni-bonn.de/mailman/listinfo.cgi/swi-prolog Richard A. Prolog Not Operator You have not showed us your implementation of append/3. What is the possible impact of dirtyc0w a.k.a. "dirty cow" bug? I've gone through the ordinary steps of removing all spaces, but still I keep getting the same error every time.
Prolog is a typeless language. Not the answer you're looking for? Syntax Error: , Or ) Expected Prolog Nested apply function at a list Story about crystal flowers that stop time? Warning Singleton Variables Prolog definition_clear_path1( Node , J , Var , L):- edge ( Node , N1 ) , not(def( Var , N1 )) , not(use( Var , N1 )) , definition_clear_path1( N1 , J
But Prolog doesn't know that. (I _think_ XSB Prologdoes or did know that; I know there was one Prolog that was smartenough to notice complementary goals.) So it is necessary to see here min(X, Y, Z) :- X > Y, !, Z = Y. _______________________________________________ SWI-Prolog mailing list [hidden email] https://mailbox.iai.uni-bonn.de/mailman/listinfo.cgi/swi-prolog Richard A. Also, check out more convenient list syntax: You can write the penultimate clause equivalently as is_faster(F, S, [F,S,_]). (again, just considering syntax, and leaving the semantics unchanged). –mat Sep 15 '15 In arithmetic comparison when comparing an integer and a float, the integer is first widened to a float. Syntax Error Operator Expected Ocaml
And here, as another issue, you might want to cut (!) at the final of the predicate, otherwise Prolog because of backtracking will try the second go when it succeeds this There's nothing wrong with that. (Except that it's pointless, because append/3 is built in.) More precisely, it's ugly not to put spaces around ":-" and it's inconsistent to put spaces after Editeur ● Markdown Vous pouvez rédiger votre message en Markdown ou en HTML uniquement. × × Supprimer Vous n'avez pas les droits suffisant pour supprimer ce sujet ! × × Modérer http://bsdupdates.com/syntax-error/prolog-error-operator-expected.php f(X, 2) :- X>=3, X<6, !.
solve_puzzle(Swimmers):- Swimmers=[_Girl1,_Girl2,_Girl3], [girl(_,_,_,first),girl(_,_,_,second),girl(_,_,_,third)]=Swimmers, is_faster(girl(claudia,_,_,_),(_,_,cheltenham_girls,_),Swimmers), is_faster(girl(mary,_,_,_),girl(_,table_tennis,_,_),Swimmers), member(girl(_,weightlifting,_,first),Swimmers), member(girl(mary,_,sydney_girls_high_school,_),Swimmers), member(girl(claudia,ballroom_dancing,_,_),Swimmers), member(girl(_,_,hornsby_girls_high_school,_),Swimmers). Prolog Write Inscrivez-vous gratuitement en 30s. share|improve this answer answered Mar 11 '14 at 13:38 Javier 958 add a comment| up vote 1 down vote The code you provide is invalid SWI-Prolog code because of several reasons.
def(t,4). ERROR: c:/users/admin/documents/q.pl:2:4: Syntax error: Operator expected % q compiled 0.00 sec, 1,136 bytes true. You should instead use the character "-" (Unicode's HYPHEN-MINUS, U+002D) there. _______________________________________________ SWI-Prolog mailing list [hidden email] https://mailbox.iai.uni-bonn.de/mailman/listinfo.cgi/swi-prolog Mihai Fonoage Reply | Threaded Open this post in threaded view ♦ ♦ Prolog Lists Prolog is a typeless language.
If Six Is Easy, Is Ten So Hard? What you probably want to do is an arithmetic comparison. Browse other questions tagged swi-prolog visual-prolog or ask your own question. Get More Info exists(Person) :- family(_, _, _, Children), member(Person, Children).
ERROR: c:/users/admin/documents/q.pl:2:4: Syntax error: Operator expected % q compiled 0.00 sec, 1,136 bytes true. What should I fix to run under SWI-Prolog? -- View this message in context: http://www.nabble.com/Newbie%3A-common-Syntax-error%3A-Operator-expected-tp26095829p26095829.html Sent from the SWI Prolog mailing list archive at Nabble.com. _______________________________________________ SWI-Prolog mailing list [hidden email] What does that mean? From then on the SWI-prolog manual gives you the specifics and between that and experimenting you can get nice and far.
PS. hProlog has no dynamic predicates. def(e,1). more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed
When I try to run it in SWI-Prolog I get error: 1 ?- consult(q). It never got implemented, because Quintus Prolog wasclearly better. Vladimir Mihailenko 2009-10-28 16:59:16 UTC PermalinkRaw Message Ooh...