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Core Data Predicate Builder - comparing dates

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Core Data Predicate Builder - comparing dates

Subject: Core Data Predicate Builder - comparing dates
From: Steve Cronin <email@hidden>
Date: Fri, 28 Aug 2009 01:33:34 -0500

Folks;

I have a Core Data entity that has a dateCreated and a dateModified - both NSDates in the object files. I'd like to construct a predicate that will retrieve all records where a record's dateModified is greater than that record's dateCreated.

Its deceptively easy to setup something that looks like it should work using 'Control-click' and 'Key' in the predicate builder in XCode. But when I run queries it doesn't appear to yield the right results. My thinking is that the comparison operators don't properly evaluate dates (am I wrong?)

So dropping back to code - how would I write this predicate in code?

Thanks for any help!
Steve

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