Improves collection view partial updates throttling logic.

Author: kzaher

Podfile.lock

@@ -17,10 +17,10 @@ EXTERNAL SOURCES:
 
 CHECKOUT OPTIONS:
   RxCocoa:
-    :commit: 979f3723e43cf5e340818142baca15b3b37ec351
+    :commit: 4a36de8a2452b2cee62bc5cb8a5376e755f2d8e7
     :git: [email protected]:ReactiveX/RxSwift.git
   RxSwift:
-    :commit: 979f3723e43cf5e340818142baca15b3b37ec351
+    :commit: 4a36de8a2452b2cee62bc5cb8a5376e755f2d8e7
     :git: [email protected]:ReactiveX/RxSwift.git
 
 SPEC CHECKSUMS:

Sources/DataSources+Rx/RxCollectionViewSectionedAnimatedDataSource.swift

@@ -29,12 +29,19 @@ public class RxCollectionViewSectionedAnimatedDataSource<S: AnimatableSectionMod
 
     private let disposeBag = DisposeBag()
 
+    // This subject and throttle are here
+    // because collection view has problems processing animated updates fast.
+    // This should somewhat help to alleviate the problem.
     private let partialUpdateEvent = PublishSubject<(UICollectionView, Event<Element>)>()
 
     public override init() {
         super.init()
 
         self.partialUpdateEvent
+            // so in case it does produce a crash, it will be after the data has changed
+            .observeOn(MainScheduler.asyncInstance)
+            // Collection view has issues digesting fast updates, this should
+            // help to alleviate the issues with them.
             .throttle(0.5, scheduler: MainScheduler.instance)
             .subscribe(onNext: { [weak self] event in
                 self?.collectionView(event.0, observedPartialUpdateEvent: event.1)