Re: Should objects returned by indirection be autoreleased
Re: Should objects returned by indirection be autoreleased
- Subject: Re: Should objects returned by indirection be autoreleased
- From: Greg Hurrell <email@hidden>
- Date: Fri, 12 May 2006 11:18:32 +0200
El 12/05/2006, a las 2:15, Eric escribió:
For example, this NSFormatter method:
- (BOOL)getObjectValue:(id *)anObject forString:(NSString *)string
errorDescription:(NSString **)error
Should the two indirectly returned objects (anObject and error) be
autoreleased? In other word, if I get an object from any method
other than
alloc, etc., no matter how it's returned, it should be autoreleased,
correct?
In all cases that I am aware of, objects that are returned by
indirection are autoreleased *unless otherwise documented*.
In the case of the example you cite
(getObjectValue:forString:errorDescription:) the docs *don't* say "it
is the responsibility of the caller to free/release the returned
objects" therefore you can assume that they are autoreleased. And in
fact if you look at the example code for such a method you'll see
that the returned object and the error are indeed autoreleased.
Cheers,
Greg
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