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Re: Is dealloc called for an object instantiated with IB?
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Re: Is dealloc called for an object instantiated with IB?


  • Subject: Re: Is dealloc called for an object instantiated with IB?
  • From: Bill Bumgarner <email@hidden>
  • Date: Sat, 29 Sep 2007 08:56:25 -0700

On Sep 29, 2007, at 7:56 AM, John Stiles wrote:
On Sep 29, 2007, at 5:46 AM, Finlay Dobbie wrote:
On 29/09/2007, Bob Ueland <email@hidden> wrote:
In Hillegass book chapter 4, there is a class called AppController instantiated with IB. In the file AppController.m there is the following method:

- (void)dealloc
{
    NSLog(@"dealloc");
    [speechSynth release];
    [super dealloc];
}
@end


However when I run the application and quit it, I never see the text "dealloc" appear in the log window. Does this mean that this method is never called?

Correct. There is no point individually freeing the memory for every object at application quit time, because the OS will automatically reclaim all the memory in one big chunk.
That's true, of course, but the counterpoint is that dealloc can be used for more than just strictly freeing memory, and these behaviors will be lost at shutdown time.

Yes -- it can be used for more than just freeing memory.

Don't do that.

Overloading the Cocoa reference counting mechanism to manage more than memory leads to all kinds of hard to debug problems and instabilities. And it simply doesn't work under a garbage collected Objective-C, coming in Leopard.

From the archives:

http://lists.apple.com/archives/cocoa-dev/2007/Jul/msg01220.html

b.bum




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References: 
 >Is dealloc called for an object instantiated with IB? (From: Bob Ueland <email@hidden>)
 >Re: Is dealloc called for an object instantiated with IB? (From: "Finlay Dobbie" <email@hidden>)
 >Re: Is dealloc called for an object instantiated with IB? (From: John Stiles <email@hidden>)

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