leftExpression The left expression for the receiver. Declarationvar leftExpression: NSExpression { get } Discussionnil if there is none. See AlsoGetting Information About a Comparison PredicatecomparisonPredicateModifierNSComparisonPredicate.ModifiercustomSelectorrightExpressionoptionsNSComparisonPredicate.OptionspredicateOperatorTypeNSComparisonPredicate.Operator