Swift 更新内容
Generated on 8/3/2024
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在 WWDC 2024 上，Swift 进行了多项更新，以下是一些主要内容：
-
Swift 6 语言模式：
- Swift 6 引入了新的语言模式，提供了编译时的数据竞争安全性。你可以逐个模块地采用新模式，并与尚未迁移到 Swift 6 语言模式的依赖项互操作。
- 数据竞争检查得到了显著改进，确保了安全性。Swift 5.10 完成了并发检查，Swift 6 可以识别在某些场景下传递非可发送值是安全的。
-
Swift Data：
- Swift Data 现在支持自定义数据存储，允许你使用替代的后端存储数据，如 SQLite、远程 Web 服务或 JSON 文件集合。
- 新的历史 API 使你可以跟踪数据存储中的所有更改，这对于需要同步到远程 Web 服务的本地更改非常有用。
- 引入了
index和unique宏，index使查询更高效，unique确保属性集没有重复条目。
-
SwiftUI：
- SwiftUI 现在支持更多的滚动视图控制和动画功能。你可以使用 SwiftUI 动画类型来动画化 UIKit 视图，并且可以在滚动时检测视图的可见性变化。
- SwiftUI 视图协议现在标记为
@MainActor，这意味着所有符合视图的类型默认隔离到主 actor。
-
Xcode 16：
- Xcode 16 提供了对 Swift 6 数据竞争安全性的支持，并改进了预览功能，使其更易于编写、可重用性更高，并与模型更好地集成。
有关这些更新的更多详细信息，你可以查看以下相关的 WWDC 2024 会话：
- Platforms State of the Union
- What’s new in Swift
- What’s new in SwiftData
- What’s new in SwiftUI
- What’s new in Xcode 16
这些更新将帮助开发者更高效地编写代码，并提高应用程序的性能和安全性。
Platforms State of the Union 5-Minute Recap
Watch a quick recap of the newest advancements on Apple platforms.
Platforms State of the Union
Discover the newest advancements on Apple platforms.
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”.
What’s new in SwiftUI
Learn how you can use SwiftUI to build great apps for any Apple platform. Explore a fresh new look and feel for tabs and documents on iPadOS. Improve your window management with new windowing APIs, and gain more control over immersive spaces and volumes in your visionOS apps. We’ll also take you through other exciting refinements that help you make expressive charts, customize and layout text, and so much more.
What’s new in Swift
Join us for an update on Swift. We’ll briefly go through a history of Swift over the past decade, and show you how the community has grown through workgroups, expanded the package ecosystem, and increased platform support. We’ll introduce you to a new language mode that achieves data-race safety by default, and a language subset that lets you run Swift on highly constrained systems. We’ll also explore some language updates including noncopyable types, typed throws, and improved C++ interoperability.
What’s new in UIKit
Explore everything new in UIKit, including tab and document launch experiences, transitions, and text and input changes. We’ll also discuss better-than-ever interoperability between UIKit and SwiftUI animations and gestures, as well as general improvements throughout UIKit.
What’s new in Xcode 16
Discover the latest productivity and performance improvements in Xcode 16. Learn about enhancements to code completion, diagnostics, and Xcode Previews. Find out more about updates in builds and explore improvements in debugging and Instruments.