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What is the result of the following?
NSString *myStr = [[[NSString alloc] initWithString:@"Hello World."] autorelease];
myStr = [NSString stringWithString:@"Hello Again."];
Does myStr get correctly released or does this crash, since we would call autorelease on myStr which is now set to a string that is already autoreleased?
Your code example works the way you would expect.
autoreleasecan’t somehow change what object it refers to after you send the message. The@"Hello World."and@"Hello Again."objects are different objects, even though your example uses the same pointer variable to refer to them.