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What’s the difference between actors, classes, and structs? Actors、Classes和 Structs 之间有什么区别？
Swift provides four concrete nominal types for defining custom objects: actors, classes, structs, and enums. Each of these works a little differently from the others, but the first...
12个月前What is actor reentrancy and how can it cause problems? 什么是 actor 重入性，它如何导致问题？
Actor-isolated functions are reentrant, which means it's possible for one piece of work to begin before a previous piece of work completes. This opens the possibility of subtle bug...
12个月前
What is actor hopping and how can it cause problems? 什么是 actor 跳转，它如何导致问题？
When a thread pauses work on one actor to start work on another actor instead, we call it actor hopping, and it will happen any time one actor calls another.当线程暂停对一个 a...
12个月前
Understanding how global actor inference works 了解全局参与者推理的工作原理
Apple explicitly annotates many of its types as being @MainActor, including most UIKit types such as UIView and UIButton. However, for a while the Swift team da...
12个月前Who decides which actor code runs on? 谁决定在哪个 actor 代码上运行？
One common confusion with actors comes in deciding exactly where code runs, because just adding @MainActor and hoping for the best is rarely good enough.与 Actor 的一个常...
12个月前
How to make parts of an actor nonisolated 如何使 actor 的各个部分非隔离
All methods and mutable properties inside an actor are isolated to that actor by default, which means they cannot be accessed directly from code that’s external to the actor. Acce...
12个月前Understanding actor initialization 了解 actor 初始化
Swift's actors run on their own executor most of the time, so they manage how and where their work is done. However, during the actor's initialization its executor isn't ready to t...
12个月前Is it efficient to create many tasks? 创建许多任务是否有效？
Previously I talked about the concept of thread explosion, which is when you create many more threads than CPU cores and the system struggles to manage them effectively. Howev...
12个月前How to run tasks using SwiftUI’s task() modifier 如何使用 SwiftUI 的 task() 修饰符运行任务
SwiftUI provides a task() modifier that starts a new task as soon as a view appears, and automatically cancels the task when the view disappears. This is sort of the equi...
12个月前How to create and use task local values 如何创建和使用任务本地值
Swift lets us attach metadata to a task using task-local values, which are small pieces of information that any code inside a task can read.Swift 允许我们使用 task-local ...
12个月前