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CoreData: predicate for empty relationship?

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CoreData: predicate for empty relationship?

Subject: CoreData: predicate for empty relationship?
From: Jim Correia <email@hidden>
Date: Wed, 16 Nov 2005 17:34:23 -0500

Say I have a Person entity, with a to-many relationship to pets.

How do I write a predicate which will select all the people who currently don't have any pets?

Thanks,
Jim
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