How do I use diffable data sources in Swift?

Using diffable data sources in Swift is a powerful way to manage your collection views and table views efficiently. Diffable data sources allow you to handle updates and changes to your data with less complexity and boilerplate code. This makes your UI code cleaner and more maintainable.

The following example demonstrates how to implement a basic table view using a diffable data source in Swift.

import UIKit struct Item: Hashable { let identifier: UUID let title: String } class ViewController: UIViewController { var tableView: UITableView! var dataSource: UITableViewDiffableDataSource! var items: [Item] = [] override func viewDidLoad() { super.viewDidLoad() setupTableView() setupDataSource() applySnapshot() } func setupTableView() { tableView = UITableView(frame: view.bounds) view.addSubview(tableView) tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell") } func setupDataSource() { dataSource = UITableViewDiffableDataSource(tableView: tableView) { (tableView, indexPath, item) -> UITableViewCell? in let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) cell.textLabel?.text = item.title return cell } } func applySnapshot() { var snapshot = NSDiffableDataSourceSnapshot() snapshot.appendSections([0]) items = [Item(identifier: UUID(), title: "Item 1"), Item(identifier: UUID(), title: "Item 2"), Item(identifier: UUID(), title: "Item 3")] snapshot.appendItems(items) dataSource.apply(snapshot, animatingDifferences: true) } }

diffable data source Swift UICollectionView UITableView iOS development data management

Related Questions

How do I avoid rehashing overhead with std::set in multithreaded code?

How do I find elements with custom comparators with std::set for embedded targets?

How do I erase elements while iterating with std::set for embedded targets?

How do I provide stable iteration order with std::unordered_map for large datasets?

How do I reserve capacity ahead of time with std::unordered_map for large datasets?

How do I erase elements while iterating with std::unordered_map in multithreaded code?

How do I provide stable iteration order with std::map for embedded targets?

How do I provide stable iteration order with std::map in multithreaded code?

How do I avoid rehashing overhead with std::map in performance-sensitive code?

How do I merge two containers efficiently with std::map for embedded targets?