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iosswiftuicollectionviewuicollectionviewcellfast-enumeration

Fast Enumeration through UICollectionView Cells - Swift

I am trying to fast enumerate through all of my collection view cells, however this implementation below is giving me a warning.

for cell in self.collectionView?.visibleCells() as [UICollectionViewCell] {

    // Do Stuff
}

Error below appears on first line:

Operand of postfix '?' should have optional type; type is '(UICollectionView, cellForItemAtIndexPath: NSIndexPath) -> UICollectionViewCell'

I've tried messing around with optionals and had this working in Xcode 6 Beta 6, but to no avail in "Beta 7"

How do i get rid of this error? / Write a loop that goes through all my CollectionView Cells ?

Solution

  • The collectionView property is now an optional UICollectionView?, so you have to unwrap it:

    for cell in self.collectionView!.visibleCells() as [UICollectionViewCell] { ... }