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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))).
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 , …
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 -- tuples_in/2. Availability::- use_module(library(clpfd)). 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.
Compared to SimpleScala, Prolog structures behave like a combination of a constructor and a tuple. To illustrate this, the code snippet below shows a structure named foo which contains the
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.
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.
