On May 21, 2008, at 10:36 AM, Sherm Pendley wrote:
[Objects] are simply released when the autorelease pool they are
created in is released - which you can treat as occurring at the
end of the method in which the init occurs.
Nonsense again. The autorelease pool is emptied at the end of each
iteration through the event loop, and each iteration can encompass
any number of method calls.
Actually, the original raises a valid point. It's true that the
autorelease pool is emptied each time through the main event loop.
However, methods are free to create their own autorelease pools --
folks do this when they know they're going to create a bunch of short-
lived objects. The point is, whoever called you might pop an
autorelease pool as soon as your method returns. There's no guarantee
that autoreleased stuff will be dealloc'ed as soon as you return, but
there's also no guarantee that it won't. In other words, if you want
to keep it after you return, retain it.
--Chris N.
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