From 9c70cec8d88a0436f17cad7927e1d06682da4dcf Mon Sep 17 00:00:00 2001
From: Adlai Holler <adlai@pinterest.com>
Date: Thu, 23 Jun 2016 16:58:23 -0700
Subject: [PATCH] Improve update handling more

---
 AsyncDisplayKit/ASCollectionView.mm | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/AsyncDisplayKit/ASCollectionView.mm b/AsyncDisplayKit/ASCollectionView.mm
index 68031f464a..63bbefc603 100644
--- a/AsyncDisplayKit/ASCollectionView.mm
+++ b/AsyncDisplayKit/ASCollectionView.mm
@@ -498,18 +498,21 @@ static NSString * const kCellReuseIdentifier = @"_ASCollectionViewCell";
 - (void)insertSections:(NSIndexSet *)sections
 {
   ASDisplayNodeAssertMainThread();
+  if (sections.count == 0) { return; }
   [_dataController insertSections:sections withAnimationOptions:kASCollectionViewAnimationNone];
 }
 
 - (void)deleteSections:(NSIndexSet *)sections
 {
   ASDisplayNodeAssertMainThread();
+  if (sections.count == 0) { return; }
   [_dataController deleteSections:sections withAnimationOptions:kASCollectionViewAnimationNone];
 }
 
 - (void)reloadSections:(NSIndexSet *)sections
 {
   ASDisplayNodeAssertMainThread();
+  if (sections.count == 0) { return; }
   [_dataController reloadSections:sections withAnimationOptions:kASCollectionViewAnimationNone];
 }
 
@@ -522,18 +525,21 @@ static NSString * const kCellReuseIdentifier = @"_ASCollectionViewCell";
 - (void)insertItemsAtIndexPaths:(NSArray *)indexPaths
 {
   ASDisplayNodeAssertMainThread();
+  if (indexPaths.count == 0) { return; }
   [_dataController insertRowsAtIndexPaths:indexPaths withAnimationOptions:kASCollectionViewAnimationNone];
 }
 
 - (void)deleteItemsAtIndexPaths:(NSArray *)indexPaths
 {
   ASDisplayNodeAssertMainThread();
+  if (indexPaths.count == 0) { return; }
   [_dataController deleteRowsAtIndexPaths:indexPaths withAnimationOptions:kASCollectionViewAnimationNone];
 }
 
 - (void)reloadItemsAtIndexPaths:(NSArray *)indexPaths
 {
   ASDisplayNodeAssertMainThread();
+  if (indexPaths.count == 0) { return; }
   [_dataController reloadRowsAtIndexPaths:indexPaths withAnimationOptions:kASCollectionViewAnimationNone];
 }