Andy Matuschak on Twitter: "@jmfd You have to keep an unsafe reference around. c.f. https://t.co/cpdZ5T309x" / Twitter

So are KVO and ARC's zeroing weak refs incompatible? Obj gets dealloc, ref is nilled, then removing observer fails, exception raised.

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You have to keep an unsafe reference around. c.f. github.com/ReactiveCocoa/

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well that defeats the point of moving to ARC :-p. I assume the rationale for zeroing before a dealloc is to be "safer?"

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I don't know the rationale.

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