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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 , …
27 Σεπ 2016 · What I want to do is a translator in Prolog. I've done something like this to translate one word: traducir(X,Y) :- traduccion( X, Y ). traduccion(gato,cat).
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Prolog is a logic programming language developed in the early 1970s that is about objects and relationships between objects. It aims to be a declarative programming language, i.e. Prolog programs often just say what they will do without specifying exactly how they will do it.
2 Μαΐ 1997 · The members of a relation are called tuples. In relational databases, a relation is viewed as a table. The Prolog view of a relation is that of a set of named tuples. For example, in Prolog form, here are some unexpected entries in a city-state-population relation.
threepath(A, D, Ps) :- Ps = [[A,B,_T0,T1],[B,C,T2,T3],[C,D,T4,_T5]], T2 #> T1, T4 #> T3, trains(Ts), tuples_in(Ps, Ts). In this example, the unique solution is found without labeling: ?- threepath(1, 4, Ps).
