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Resolve Internal Inconsistency During Updates When Using Stable Range Controller #1060

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appleguy merged 1 commit into from
Jan 14, 2016
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Resolve Internal Inconsistency During Updates When Using Stable Range Controller #1060

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3 changes: 1 addition & 2 deletions AsyncDisplayKit/Details/ASRangeController.mm
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Original file line number Diff line number Diff line change
Expand Up @@ -156,8 +156,7 @@ - (void)_updateVisibleNodeIndexPaths
NSSet *indexPaths = [_layoutController indexPathsForScrolling:_scrollDirection rangeType:rangeType];

// Notify to remove indexpaths that are leftover that are not visible or included in the _layoutController calculated paths
// This value may be nil for the first call of this method.
NSMutableSet *removedIndexPaths = [_rangeTypeIndexPaths[rangeKey] mutableCopy];
NSMutableSet *removedIndexPaths = _rangeIsValid ? [_rangeTypeIndexPaths[rangeKey] mutableCopy] : [NSMutableSet set];
[removedIndexPaths minusSet:indexPaths];
[removedIndexPaths minusSet:visibleNodePathsSet];

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