Constraint Logic Programming

(CLP) A programming framework based (like Prolog) on LUSH (or SLD) resolution, but in which unification has been replaced by a constraint solver.

A CLP interpreter contains a Prolog-like inference engine and an incremental constraint solver.

The engine sends constraints to the solver one at a time.

If the new constraint is consistent with the collected constraints it will be added to the set. If it was inconsistent, it will cause the engine to backtrack.

CLP* is a variant.

["Constraint Logic Programming", J. Jaffar et al, 14th POPL, ACM 1987].

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constant mapping constraint constraint functional programming Constraint Handling In Prolog ConstraintLisp	CLP CLP* CLP(R) CLP(sigma*) Constraint Handling In Prolog	CONSTRAINTS constraint satisfaction constructed type constructive Constructive Cost Model