The system whisks other apps away letting people dive into the world you've created. The new ImmersiveSpace scene type lets you define immersive, spatial experiences, whether embedded in your surroundings or with full immersion. To go truly all in, add ImmersiveSpaces to your app. For dynamic, interactive models with lighting effects and more, use the new RealityView. Fill a volume with a static model using Model3D. People can use your content while they jot down thoughts in Notes or update slides in Keynote. Volumes display 3D experiences - like board games or architectural models - in a bounded space. For even more depth, apply the volumetric style to your scene. Within these containers, you can use all the usual SwiftUI controls just like on the other platforms. Within a window, choose one of the usual SwiftUI containers, like NavigationSplitView or TabView. WindowGroup scenes render as 2D windows, with delightful depth-sensitive 3D controls. On this new platform, construct windows using familiar scene types like WindowGroup. From core pieces like the Home View in Control Center to familiar apps like TV, Safari, and Freeform to all-new environments like immersive rehearsals in Keynote SwiftUI is at the heart of these user experiences. Spatial computing brings SwiftUI into a bold new future with all-new 3D capabilities like volumes rich experiences with immersive spaces new 3D gestures, effects, and layout and deep integration with RealityKit. From the headset and watchOS 10 to new widgets and cross-framework integration, SwiftUI can help you create experiences that delight the people who use your apps. I'm excited to tell you about some great new places to use SwiftUI. Across the framework, we've enhanced your ability to provide great interactions, with powerful scroll view improvements, refinements to Focus and keyboard input, and deeper customization of controls like buttons and menus. The team amped up our animation APIs, letting you create even more beautiful experiences for the people using your apps. The Inspector, plus Table improvements, provide great ways to display your data. Curt: You can now use SwiftUI in even more places, including a brand-new platform! New data flow types dramatically simplify modeling your domain, providing more power than ever before. We're happy to have the chance to share what's new in SwiftUI. I'm also an engineer on the SwiftUI team. I'm Curt and I'm an engineer on the SwiftUI team. However, the compiler is only able to infer the underlying return type when all of the code branches within a given function or computed property return the exact same type.♪ Mellow instrumental hip-hop ♪ ♪ Curt Clifton: Hello and thanks for joining us. That’s especially useful since (almost) every time that we apply a modifier to a given view, or change the contents of a container, we’re actually changing the type of view that we’ll return. When using SwiftUI to build views, we very often use the some View opaque return type to avoid having to explicitly define what exact type that we’re actually returning. So, in this article, let’s take a look at two core techniques that can help us avoid AnyView while still enabling us to work with multiple view types in very dynamic ways. That’s because SwiftUI uses a type-based algorithm to determine when a given view should be redrawn on screen, and since two AnyView-wrapped views will always look completely identical from the type system’s perspective (even if their underlying, wrapped types are different), performing this kind of type erasure significantly reduces SwiftUI’s ability to efficiently update our views. However, while there are cases in which we might need to use AnyView, it’s often best to avoid it as much as possible. SwiftUI ships with a special view called AnyView, which can be used as a type erased wrapper to enable multiple view types to be returned from a single function or computed property, or to let us reference a view without having to know its underlying type.
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