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Implementation of a Diffable Data Source in iOS.

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Diffable Data Source, is a new data source introduced in iOS 13 that provides a new way of working with table and collection views. It allows you to manage data in a more efficient and flexible way, by using a declarative approach and snapshot-based updates. The implementation of a Diffable Data Source in iOS can be done in several steps: Create an instance of UITableViewDiffableDataSource: You need to create an instance of the UITableViewDiffableDataSource class, which is the class that provides the implementation of the Diffable Data Source. You can do this by initializing the data source with a table view and a cell provider block. The cell provider block is a closure that is called to configure the cells in the table view. let  dataSource  =   UITableViewDiffableDataSource < Section ,  Item >(tableView: tableView) { (tableView, indexPath, item) ->  UITableViewCell ?  in   let  cell  = tableView.dequeueReusableCell(withIdentifier:...