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evaluatePredicate(in:)

Returns a Boolean value indicating whether the rule’s predicate has been satisfied in the context of the specified rule system.

Declaration

func evaluatePredicate(in system: GKRuleSystem) -> Bool

Return Value

true if the rule is satisfied (and its action should be executed); otherwise, false.

Discussion

The GKNSPredicateRule class overrides this method to use its predicate property for testing the rule. Subclasses of GKNSPredicateRule do not need to override this method.

See Also

Evaluating a Rule