iphone - one alloc, retainCount == 2

Question

I have a following code:

NSLog(@"%d", [chart retainCount]);

self.chart = [[BNPieChart alloc] initWithFrame:self.view.frame];
NSLog(@"%d", [chart retainCount]);

Terminal shows:

[Session started at 2011-03-28 11:09:46 +0200.]
2011-03-28 11:09:51.008 Finance[35111:207] 0

2011-03-28 11:09:51.010 Finance[35111:207] 2

As I know, retainCount should be equal to 1, not 2.

Answer 1

You chart property defined as retain or copy, so:

self.chart = [[BNPieChart alloc] initWithFrame:self.view.frame];

+1 retain at alloc ([BNPieChart alloc])
+1 retain at assignment (self.chart = )