Object allocate and init in Objective C

Question

What is the difference between the following 2 ways to allocate and init an object?

AController *tempAController = [[AController alloc] init];
self.aControll         


        

Answer 1

Note also that your desire to cut the code down to one line is why many people use Autorelease:

self.aController = [[[AController alloc] init] autorelease];

Though in theory on the iPhone autorelease is somehow more expensive (never heard a clear explanation why) and thus you may want to explicitly release right after you assign the object elsewhere.