What is NSDiffableDataSourceSnapshot `reloadItems` for?

Question

I\'m having difficulty finding the use of NSDiffableDataSourceSnapshot reloadItems(_:):

• If the item I ask to reload is not equatable to an item that is already p

Answer 1

I posted the same question, not realising. I got this working by firstly converting my model to classes. Then calling 'applySnapshot' after calling 'reloadItems'.

func toggleSelectedStateForItem(at indexPath: IndexPath, animate: Bool = true) {
    let item = dataSource.itemIdentifier(for: indexPath)!
    var snapshot = dataSource.snapshot()
    item.isSelected = !item.isSelected
    snapshot.reloadItems([item])
    dataSource.apply(snapshot)
}