Autorelease pool2

autorelease_pool2

        // Using auto release pools
        @autoreleasepool {
            NSMutableArray *temporaryArrayForPairs = [NSMutableArray new];
            for (int i=0; i<500000; i++) {
                Pair *pair = [Pair new];
                pair.grandParent = @"darshan was here";
                [temporaryArrayForPairs addObject:pair];
            }
        }