Re: ^Block statement considered harmful for callbacks?
Re: ^Block statement considered harmful for callbacks?
- Subject: Re: ^Block statement considered harmful for callbacks?
- From: Lee Ann Rucker <email@hidden>
- Date: Thu, 25 Apr 2013 09:54:08 -0700 (PDT)
- Thread-topic: ^Block statement considered harmful for callbacks?
> My point remains: blocks are dangerous and there is no easy way to
> ensure they are safe. You can't avoid referencing "self" in blocks,
> because it is the very point of almost every callback block. So you
> have to every time to remind yourself to jump through hoops to avoid
> the retain cycles. Nah.
Yes you can.
MyWeakRef *weakRef = [MyWeakRef weakRefFromObject:self];
^() = {
Foo *wself = [weakRef originalObject];
// wself may be nil, that's cool because we only want to doStuff if 'self' is still around.
[wself doStuff];
}
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