Satisfying a Unary Prolog predicate -

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Satisfying a Unary Prolog predicate -

in order write procedure satisfy(p,l) returns list l of terms x such unary predicate p(x) succeeds. have attempted following:

satisfy(p,l):- findall(x,call(p(x)),l).

am on right track or have gone off?

you can using builtin predicate call/2:

satisfy(p, l):- findall(x, call(p, x), l).

prolog

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