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Writing a method like "sharedApplication"

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Writing a method like "sharedApplication"

Subject: Writing a method like "sharedApplication"
From: Todd Yandell <email@hidden>
Date: Wed, 19 Jan 2005 21:15:20 -0600

Hi,

I have a simple question that haven't been able to find a solution for. What I would like to do is create a method that works like NSApplication's "sharedApplication" message, or NSUserDefault's "sharedUserDefaults" message. The first time you call it it should create an instance of itself and keep a reference to it somehow. After that, anytime the method is called it should simply return the the instance it created earlier. This part is easy, I can just use a static variable. The part I'm not sure on however, is how to release it when the app exits. I've considered C's "atexit" function, but I thought there may be an all-Cocoa way of doing this. Any ideas?

Thanks,
Todd Yandell

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