On Tue, Jul 19, 2011 at 4:37 PM, Greg Parker <email@hidden> wrote:
> On Jul 19, 2011, at 4:19 PM, Kyle Sluder wrote:
>> On Tue, Jul 19, 2011 at 3:57 PM, Greg Parker <email@hidden> wrote:
>>> ARC fixes this. It will copy the block unless the optimizer determines that it is safe not to.
>> This intrigues me. When would it be unsafe to copy the block?
> Other way around. It is always safe to copy the block object. The optimization is not copying if the copy is not required.
Oops. I misread "safe not to" as "not safe to." That makes a lot more sense.
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