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O'Keefe Reply | Threaded Open this post in threaded view ♦ ♦ | Report Content as Inappropriate ♦ ♦ Re: Newbie: common Syntax error: Operator expected In reply to this current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list. I just copy/paste examples and get the > same error message (writing first post I thought that the reason is the > same, but now...): > > conc([], L, L). > I just copy/paste examples and get the same error message (writing first post I thought that the reason is the same, but now...): conc([], L, L). http://bsdupdates.com/syntax-error/prolog-error-operator-expected.php

What is summer in Spanish? "Estío" vs "verano" A simple plot returns empty, even though specific points values exist How can I get started learning Sitecore? Same error message: 6 ?- consult(q). definition_clear_path1(B , J, K , F):- edge (B , J ). I just copy/paste examples and get thesame error message (writing first post I thought that the reason is theconc([], L, L).conc([H|T], L, [H|T1]):-conc(T,L,T1).6 ?- consult(q).ERROR: c:/users/admin/documents/q.pl:2:0: Syntax error: Operator expected% q

Syntax Error: , Or ) Expected Prolog

What do your base stats do for your character other than set your modifiers? Vladimir Mihailenko 2009-10-28 16:12:20 UTC PermalinkRaw Message Ooh... 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 ♦ ♦

symptom(Patient,sore_throat) :- write("Does ",Patient," have a sore_throat (y/n) ?"), response(Reply), Reply='y'. That's necessary for answering your why. Is this a debugging technique? Syntax Error Operator Expected Ocaml The dash in your example is the problem (it seems alittle longer than the default one).Post by Vladimir MihailenkoCan you recomend some resources which explores SWI-Prolog syntax or providessome simple but

I used PREDICATES and CLAUSES, because SWI-Prolog IDE properly >> highlights it like keywords. Prolog Syntax Error Can a nuclear detonation on Moon destroy life on Earth? My point was that dynamic and static predicates might wellbenefit from different strategies.Back in 1984, before I joined Quintus, I designed a Prolog systemfor Xerox. hypothesis(Patient,measles) :- symptom(Patient,cough), symptom(Patient,sneezing), symptom(Patient,runny_nose).

But if you use Prolog terms without commas between them and they are NOT operators, then you will get the message "Error. Arguments Are Not Sufficiently Instantiated Warning: (/home/kris/lehre/esslli04/esslli04prolog/kbs/kb.singleton_vars.pl:8): Singleton variables: [X, Y] % kb.singleton_vars.pl compiled 0.00 sec, 1,520 bytes Yes Prolog tells you that X and Y are singleton variables in the clause starting at line 8. def(d,4). Can u say what is wrong with this code: min(X, Y, X) :- X <= Y.

Prolog Syntax Error

hypothesis(Patient,mumps) :- symptom(Patient,fever), symptom(Patient,swollen_glands). http://stackoverflow.com/questions/9841851/prolog-operator-expected Smartness is not a property of Prolog. > Does hProlog still insert the implicit cut when the predicate > is declared to be dynamic? Syntax Error: , Or ) Expected Prolog 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 Prolog Syntax Error . Or Operator Expected After Expression ERROR: c:/users/admin/documents/q.pl:2:0: Syntax error: Operator expected % q compiled 0.00 sec, 0 bytes true.

Browse other questions tagged swi-prolog visual-prolog or ask your own question. There is nothing ordinary in removing spaces as far as I am aware. What's the difference between `su -` and `su --login`? I also suspect that it may be Windows- related. Warning Singleton Variables Prolog

  1. hypothesis(Patient,flu) :- symptom(Patient,fever), symptom(Patient,headache), symptom(Patient,body_ache), symptom(Patient,conjunctivitis), symptom(Patient,chills), symptom(Patient,sore_throat), symptom(Patient,runny_nose), symptom(Patient,cough).
  2. true ?- 1 @=< 1.0.
  3. Not the answer you're looking for?
  4. Once again, the output unifications should be done afterwards.
  5. symptom(Patient,fever) :- write("Does ",Patient," have a fever (y/n) ?"), response(Reply), Reply='y'.
  6. Prolog warns you when it detects singleton variables, because singleton variables are often due to a typo (as in our example).
  7. What should I fix to run under SWI-Prolog?
  8. edge(3,7).
  9. How to output solution like Yes or No1how to call web service from prolog0Program Error 1010 Prolog1How can I list clauses with their original variable names? (SWI-Prolog)1Syntax error: Operator expected (do

The tutorial I used to get started was:http://www.dbnet.ece.ntua.gr/~adamo/csbooksonline/prolog-notes.pdfIt teaches you the basics. Join them; it only takes a minute: Sign up Prolog - Getting Syntax Error - Operator Expected up vote 3 down vote favorite I'm starting to learn Prolog, and I'm running 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 this page Would combining all German articles to just one article have a real negative effect on the language? "Surprising" examples of Markov chains Prove sets equality.

Browse other questions tagged prolog or ask your own question. Prolog Not Operator Solutions Another thing that you might get complaints about are singleton variables; i.e., variables which are used only once in a clause. and Thanks in advance!!! > > Check Prolog's syntax for lists, and you will see your mistake. > > Norbert E.

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pos_path(X,Y, [X,Y]):- edge(X,Y). edge(4,6). Does hProlog still insert the implicit cut when the predicate is declared to be dynamic? _______________________________________________ SWI-Prolog mailing list [hidden email] https://mailbox.iai.uni-bonn.de/mailman/listinfo.cgi/swi-prolog Bart Demoen-2 Reply | Threaded Open this post in Prolog Predicate use(c,4).

When I run this I get the following error: definition_clear_path/3: Undefined procedure: definition_clear_path1/4 However, there are definitions for: definition_clear_path/3 When I enter the rule for definition_clear_path1 from the terminal I get more hot questions question feed about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Science The first callreplaces this:?- min3(2,3,X).X = 2.5 ?- vm_list(min3).========================================================================min3/3========================================================================0 s_trustme(clause(371528))----------------------------------------S_VIRGIN is already capable of calling Prolog for dealing withautoloading, which provides another option for handling this.Ideally, I would like to keep Get More Info Why?