CODEWITHSUNDEEP
prolog
sma
sma

Reputation: 315

Prolog set a list based on query values

Is there a way to get a list by results of a query?

eg:

getPairs(x,y):-
    v1(x), v2(y);
    v11(x), v22(y).

v1(10). v2(20). v11(12). v22(22).

then how can i use getPairs to make a list of pairs that I could then feed into another query

[[10,20],[12,22]].

Upvotes: 0

Views: 48

Answers (1)

peter.cyc
peter.cyc

Reputation: 1813

You were almost there

getPairs([[X1,X2], [Y1,Y2]):-
    v1(X1), v2(X2),
    v11(Y1), v22(Y2).

v1(10). v2(20). v11(12). v22(22).

In getPairs/1, you write what pattern you want as result. Note that logic variables are written with capitals.

Upvotes: 1

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