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[ASDisplayNode] Order-of-magnitude speedup in handling of "disable visibility" notifications. #962
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…ations" Before, it was expensive to check this value, even though it was rarely set. Now the cost is moved to setting the value, and is made very cheap to check with _hierarchyState.
…of +sharedImageDownloader.
appleguy
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…isablement [ASDisplayNode] Order-of-magnitude speedup in handling of "disable visibility" notifications.
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Before, it was expensive to check this value, even though it was rarely set.
Now the cost is moved to setting the value, and is made very cheap to check with _hierarchyState.