Fix zero sections issue

Amir Khorsandi · Amir Khorsandi · commit 1a74ed4adec1 · 2020-07-04T16:04:04.000+02:00
diff --git a/Lib/CollectionViewPagingLayout.swift b/Lib/CollectionViewPagingLayout.swift
@@ -61,7 +61,10 @@ public class CollectionViewPagingLayout: UICollectionViewLayout {
     }
     
     private var numberOfItems: Int {
-        (0..<(collectionView?.numberOfSections ?? 0))
+        guard let numberOfSections = collectionView?.numberOfSections, numberOfSections > 0 else {
+            return 0
+        }
+        return (0..<numberOfSections)
         .compactMap { collectionView?.numberOfItems(inSection: $0) }
         .reduce(0, +)
     }

Original file line number	Diff line number	Diff line change
`@@ -61,7 +61,10 @@ public class CollectionViewPagingLayout: UICollectionViewLayout {`
`61`	`61`	`}`
`62`	`62`
`63`	`63`	`private var numberOfItems: Int {`
`64`		`- (0..<(collectionView?.numberOfSections ?? 0))`
	`64`	`+ guard let numberOfSections = collectionView?.numberOfSections, numberOfSections > 0 else {`
	`65`	`+ return 0`
	`66`	`+ }`
	`67`	`+ return (0..<numberOfSections)`
`65`	`68`	`.compactMap { collectionView?.numberOfItems(inSection: $0) }`
`66`	`69`	`.reduce(0, +)`
`67`	`70`	`}`