alloc + init with synthesized property - does it cause retain count to increase by two?

Question

I\'ve seeen the following snippet quite a bit:

In the header:

SomeClass *bla;
@property(nonatomic,retain) SomeClass *bla;

In the implem

Answer 1

Yes, you are right - using the synthesized setter of a retain property would increase the ref-count on an instance you already own (as alloc implies ownership).

Just go with the second form you mentioned in your initializers:

_bla = [[SomeClass alloc] init];

... and remember to fix the retain count otherwise, e.g.:

self.bla = [[[SomeClass alloc] init] autorelease];