itemIdentifier(for:)
Returns an identifier for the item at the specified index path in the collection view.
Declaration
func itemIdentifier(for indexPath: IndexPath) -> Any?Parameters
- indexPath:
The index path of the item in the collection view.
Return Value
The item’s identifier, or nil if no item is found at the provided index path.
Discussion
This method is a constant time operation, O(1), which means you can look up an item identifier from its corresponding index path with no significant overhead.