solution_sequences:order

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Predicate order_by/2

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swipl
- library

order_by(+Spec, :Goal)

Order solutions according to Spec. Spec is a list of terms, where each element is one of. The ordering of solutions of Goal that only differ in variables that are not shared with Spec is not changed.

asc(Term): Order solution according to ascending Term
desc(Term): Order solution according to descending Term

This predicate is based on findall/3 and (thus) variables in answers are copied.