block_retain.m
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block_retain.m
runtime_swap.m
kvo_observe.m
gcd_barrier.m
associated_obj.m
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block_retain.m
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__weak typeof(self) weakSelf = self;↵
self.handler = ^(NSData *data) {↵
__strong typeof(weakSelf) strongSelf = weakSelf;↵
if (!strongSelf) return;↵
dispatch_async(dispatch_get_main_queue(), ^{↵
[strongSelf updateUI:data];↵
});↵
};↵
[self.task setCompletionHandler:self.handler];
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