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how to make an object with a single unique instance like NSNull?

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how to make an object with a single unique instance like NSNull?

Subject: how to make an object with a single unique instance like NSNull?
From: Johnny Deadman <email@hidden>
Date: Tue, 29 Mar 2005 09:42:22 -0500

I need to make a version of NSNull for my own purposes (it has to be a coredata* object so NSNull won't suffice) but I can't figure out NSNull's trick of only having a single unique instance. In other words

[NSNull null]

always returns the same instance of NSNull no matter how many times you call it.

How do I do this?

thanks,

JB

*I think we are allowed to say the word without breaking NDA, niet?


--
John Brownlow
Deep Fried Films, Inc

http://www.johnbrownlow.com
http://www.pinkheadedbug.com

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