Why should we release?

Question

I often see when we release ab object we immediately set it to nil. I know that release and nil both free the old value associated with object but in case of release it leav

Answer 1

It's as BJ said setting it to nil won't free up the memory, and in a non-gc collected environment would cause a memory leak. An alternative that'd possibly be valid as well would be

MyClass *obj = [[[MyClass alloc] init] autorelease];  

obj = nil;