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What is NSConcreteMutableData?

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What is NSConcreteMutableData?

Subject: What is NSConcreteMutableData?
From: "Frederick C. Lee" <email@hidden>
Date: Fri, 26 Nov 2004 11:17:31 -0800

Greetings: I'm deciphering a NSArrayController example that has a NSTextView field mapped to the key 'xnotes'. The example saves/reads data just fine. So I go into the debugger to explore the data array the is read/write from disk. The following is what I've found for the 'xnotes' data key for the NSTextView:

(gdb) po [[[toDos objectAtIndex:1] objectForKey:@"xnotes"] class]
NSConcreteMutableData
(gdb)

I tried to read the data using [xnotes string] but didn't work. The object didn't recognize the method. So I asked the gdb to reveal the class to be: 'NSConcreteMutableData' which appears to be an oxymoron.

Any ideas?

Ric.

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