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Validate NSPredicate format

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In my app user can create NSPredicates by using NSPredicateEditor. I want to validate that user entered correct RegEx in NSPredicateEditorRow by testing NSPredicate.

@IBAction func predicateChanged(_ sender: NSPredicateEditor) {
//I want to test sender.predicate

Is that possible?

swift nspredicate nspredicateeditor nspredicateeditorrow
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