Re: Memory Management
Re: Memory Management
- Subject: Re: Memory Management
- From: Prachi Gauriar <email@hidden>
- Date: Mon, 28 Jul 2003 23:16:23 -0500
On Monday, July 28, 2003, at 8:42 PM, Bill Cheeseman wrote:
on 03-07-28 2:44 PM, Marcel Weiher at email@hidden wrote:
On Monday, Jul 28, 2003, at 01:20 Europe/London, Martin Hdcker wrote:
Question: Is there a preferred method? And does one method cause
problems is used?
Yes, their is a preferred method:
This is correct.
--- snip ---
- (NSString *)name
{
return [[_name retain] autorelease];
}
This is not. Although there has been some championing of this method
by well-placed individuals, their preference has not met with an
overwhelmingly positive response, to say the least. IMNSHO, their
case, although appealing at first, has been thoroughly debunked and is
not widely supported by the Cocoa community any longer. Of course,
you
may disagree with this view, but at the very least the statement that
this is the preferred method is highly controversial.
<snip>
As to whether it is "not widely supported by the Cocoa community any
longer," I would say it has _never_ been widely supported, mostly
because
very few people have noticed the issue. Personally, I've been using it
myself for a long time, and it hasn't caused me any problems -- though
that
is certainly faint praise. I think it is fair to say that this is the
"preferred method" at Apple, given the identity of the "well-placed
individual" of whom we speak, but I'm sure it's not currently the
preferred
method outside of Apple because of the fact that very few people seem
to
have noticed the issue.
Just to chime in, I think it's worth noting that the Project
Builder/Xcode user scripts that generate accessor methods use the
following form:
- (ClassName *)varName {
return [[[varName retain] autorelease];
}
- (void)setVarName:(ClassName *)newVarName {
if (varName != newVarName) {
[varName release];
varName = [newVarName copy];
}
}
I'd take that as a recommendation for most cases, and Ali Ozer made the
same recommendation at WWDC 2002, if I remember correctly.
-Prachi
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