Make completion optional

Author: onmyway133

Sources/iOS/UICollectionView+Extensions.swift

@@ -19,15 +19,17 @@ public extension UICollectionView {
   public func reload<T: Hashable>(
     changes: [Change<T>],
     section: Int = 0,
-    completion: @escaping (Bool) -> Void) {
+    completion: ((Bool) -> Void)? = nil) {
 
     let changesWithIndexPath = IndexPathConverter().convert(changes: changes, section: section)
 
     // reloadRows needs to be called outside the batch
 
     performBatchUpdates({
       internalBatchUpdates(changesWithIndexPath: changesWithIndexPath)
-    }, completion: completion)
+    }, completion: { finished in
+      completion?(finished)
+    })
 
     changesWithIndexPath.replaces.executeIfPresent {
       self.reloadItems(at: $0)

Sources/iOS/UITableView+Extensions.swift

@@ -25,7 +25,7 @@ public extension UITableView {
     insertionAnimation: UITableViewRowAnimation = .automatic,
     deletionAnimation: UITableViewRowAnimation = .automatic,
     replacementAnimation: UITableViewRowAnimation = .automatic,
-    completion: @escaping (Bool) -> Void) {
+    completion: ((Bool) -> Void)? = nil) {
 
     let changesWithIndexPath = IndexPathConverter().convert(changes: changes, section: section)
 
@@ -36,7 +36,9 @@ public extension UITableView {
         internalBatchUpdates(changesWithIndexPath: changesWithIndexPath,
                              insertionAnimation: insertionAnimation,
                              deletionAnimation: deletionAnimation)
-      }, completion: completion)
+      }, completion: { finished in
+        completion?(finished)
+      })
 
       changesWithIndexPath.replaces.executeIfPresent {
         self.reloadRows(at: $0, with: replacementAnimation)
@@ -52,7 +54,7 @@ public extension UITableView {
         reloadRows(at: $0, with: replacementAnimation)
       }
 
-      completion(true)
+      completion?(true)
     }
   }