Αποτελέσματα Αναζήτησης
25 Μαΐ 2010 · Tuple term construction with the ,/2 operator is generally right-associative in PROLOG (typically referred to as a sequence), so your input of a, b(c), d(e(f)), g might well actually be the term (a, (b(c), (d(e(f)), g))).
9 Μαΐ 2022 · The Prolog equivalent is not (a,b,c), but [a,b,c]. In addition though, Prolog has compound terms that are more convenient and efficient than lists for representing tuples. When dealing with exactly two arguments and no need for a particular name, A-B represents an pair and library
?- tuples_in([[X,Y]], [[1,2],[1,5],[4,0],[4,3]]), X = 4. X = 4, Y in 0\/3. As another example, consider a train schedule represented as a list of quadruples, denoting departure and arrival places and times for each train.
17 Απρ 2019 · fact1(1,1). fact1(1,6). fact2(3,a,b) fact2(2,c,d) fact2(1,e,f) That list needs to contain tuples with each containing the second and third Value of fact2, and the added numbers of fact2, whenever the first value of fact1 and fact2 match up.
26 Απρ 2019 · A query sets up a goal: prove that the query is true, by unifying it with something known. If it is shown to be true, then it succeeds; otherwise, it fails. If goal processing involves attempted unification with the head of a rule, then each term in the body of the rule forms a subgoal.
tuples_in(+Tuples, +Relation) True iff all Tuples are elements of Relation. Each element of the list Tuples is a list of integers or finite domain variables. Relation is a list of lists of integers. Arbitrary finite relations, such as compatibility tables, can be modeled in this way.
When we pose a query to Prolog, we are setting up a goal for Prolog to try to satisfy. If Prolog is able to find facts and rules that allow it to conclude that the goal is true, we say that the goal is ‘satisfied’, or ‘succeeds’; if
