Re: core.logic, goals and facts
Basic follow up question. I assumed that all facts must be grounded, but I never really found the answer to this. Is it true? -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: core.logic, goals and facts
They probably should though I don't think that's a hard requirement. In Prolog you can write a fact that looks like this: likes(X,X). To say that everyone likes themselves. This is probably better expressed as a regular relation in core.logic and not as a fact. (defn likes [x y] (== x y)) David On Sat, May 19, 2012 at 1:01 PM, Brent Millare brent.mill...@gmail.comwrote: Basic follow up question. I assumed that all facts must be grounded, but I never really found the answer to this. Is it true? -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: core.logic, goals and facts
On Thu, May 17, 2012 at 7:19 PM, Brent Millare brent.mill...@gmail.comwrote: I'm taking a more serious dive into logic programming and I have a question about facts. *Is it true that that goals and facts are the same in that you can use unification and conde to get the same effect? So querying a conde of multiple unifications is like stating a bunch of facts of a relation, and then querying that relation?* That's how I conceptualise it. I think the similarities between the two are pretty cool :) * * *Also then if this is true, is it also true that the reason we have facts is that they can be indexed and thus be more efficient?* Facts are also a convenient way of incrementally adding to a relation, but certainly IMO their primary purpose in core.logic is efficiency. Thanks, Ambrose -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
