make blazing fast lists and collectionview
Asked on 03/03/2025
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To create blazing fast lists and collection views, you can leverage the updates and features introduced in both UIKit and SwiftUI at WWDC 2024.
UIKit Enhancements
In UIKit, the session What’s new in UIKit introduces several improvements to collection and table view APIs. These updates make it easier to update your cells and ensure they are styled appropriately using the new list environment trait. This trait helps in automatically adjusting the appearance of cells, headers, and footers based on the list's style, which simplifies your code and enhances performance.
SwiftUI Enhancements
For SwiftUI, the session SwiftUI essentials highlights the power of view composition with lists. SwiftUI's list initializer with a collection parameter allows for efficient creation of views for each element in a collection. This is further enhanced by the use of view modifiers to customize lists, such as adding swipe actions to rows, which can help in building performant and interactive lists.
Additionally, the session Demystify SwiftUI containers discusses the flexibility of SwiftUI containers, allowing for more advanced compositions and the use of sections to organize data efficiently.
By utilizing these features, you can create fast and efficient lists and collection views in your apps.
Demystify SwiftUI containers
Learn about the capabilities of SwiftUI container views and build a mental model for how subviews are managed by their containers. Leverage new APIs to build your own custom containers, create modifiers to customize container content, and give your containers that extra polish that helps your apps stand out.
SwiftUI essentials
Join us on a tour of SwiftUI, Apple’s declarative user interface framework. Learn essential concepts for building apps in SwiftUI, like views, state variables, and layout. Discover the breadth of APIs for building fully featured experiences and crafting unique custom components. Whether you’re brand new to SwiftUI or an experienced developer, you’ll learn how to take advantage of what SwiftUI has to offer when building great apps.
What’s new in SwiftData
SwiftData makes it easy to add persistence to your app with its expressive, declarative API. Learn about refinements to SwiftData, including compound uniqueness constraints, faster queries with #Index, queries in Xcode previews, and rich predicate expressions. Join us to explore how you can use all of these features to express richer models and improve performance in your app. To discover how to build a custom data store or use the history API in SwiftData, watch “Create a custom data store with SwiftData” and “Track model changes with SwiftData history”.