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swift-concurrency-6-2

Swift 6.2 可接近的并发性 — 默认单线程，@concurrent 用于显式后台卸载，隔离一致性用于主 actor 类型。

docs/zh-CN/skills/swift-concurrency-6-2/SKILL.md

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# Swift 6.2 可接近的并发

采用 Swift 6.2 并发模型的模式，其中代码默认在单线程上运行，并发是显式引入的。在无需牺牲性能的情况下消除常见的数据竞争错误。

## 何时启用

* 将 Swift 5.x 或 6.0/6.1 项目迁移到 Swift 6.2
* 解决数据竞争安全编译器错误
* 设计基于 MainActor 的应用架构
* 将 CPU 密集型工作卸载到后台线程
* 在 MainActor 隔离的类型上实现协议一致性
* 在 Xcode 26 中启用“可接近的并发”构建设置

## 核心问题：隐式的后台卸载