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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))).
14 Μαΐ 2018 · I haven't found how I can get the first/second element of a tuple in Prolog, I tried arg, but it only works on predicates. My list looks like this: Pairs = [ (pos(1, 2), pos(1, 3)), (pos(1,...
SWI-Prolog aims at providing a rich development environment, including extensive ed-itor support, graphical source-level debugger, autoloading, a ‘make’ facility to reload edited files and much more. GNU-Emacs, SWI-Prolog editor for Windows, the PDT plu-gin for Eclipse or a Visual Studio Code plugin provide alternative environments.SWISH
9 Μαΐ 2022 · Which functor should I use to express Pair and Tuples? (x,y) or x-y? (x,y,z) or x-y-z? In the The Power of Prolog, the author says that Pairs are terms with principal functor (-)/2. I have some confusion because , seems more natural. Thanks.
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.
28 Φεβ 2024 · Only first element of tuple matches. Icon4026 February 28, 2024, 8:26pm 1. I have the following rule and query: rule_path(myRelation, [relation1-EntityType1, relation2-EntityType2, relation3-EntityType3, relation4-EntityType4]). next_step(QueryRelation, [], NextRelation, NextEntity) :- rule_path(QueryRelation, [NextRelation-NextEntity|_]). % Query:
17 Ιουν 2023 · Correct Prolog evaluation depends on subquery modes in two ways: 1) subqueries must have only finitely many answers, and 2) Prolog’s predefined predicates (like is/2) often work only for particular modes and so the modes for calls to those predicates must be acceptable.
