On Aug 9, 2010, at 21:18, charlie wrote:
> NSString * string = [[NSString allocWithZone:zone] initWithFormat:@"abc!!!"];
> As you can see, the c string is successfully allocated from space in the
> custom zone. But the NSString object is allocated from the default zone,
> despite having called +[NSObject allocWithZone:].
Well, the first result from googling "nsstring allocwithzone" is this:
http://www.cocoabuilder.com/archive/cocoa/52643-allocwithzone-not-working-with-class-clusters.html
which is pretty old but is still a valid reason why the specified zone might
not be honored.
A second possibility is that the initializer you chose to use makes a decision
where to put the NSString object based on where the format string is.
Whatever the reason, you don't have absolute control over the zone an object is
allocated in, and I believe that specifying a zone at all is currently regarded
as undesirable, if not yet actually deprecated.
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