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duplicate entries and NSArrayController

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duplicate entries and NSArrayController

Subject: duplicate entries and NSArrayController
From: "Joe Roback" <email@hidden>
Date: Thu, 8 Jun 2006 02:57:31 -0700

How to do prevent duplicate entries when using an NSArrayController.

I have an NSArrayController bound to a NSMutableArray in my controller
class. I connected insert: to an "add" button on my view and I have a
NSString key-value property which is loaded in a NSTableView.

When i click on the add button, I can add many entries which the same
NSString value. I need these to be unique.

thanks.
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