Objective-C是否具有与Swift的@escaping注释等效的功能? [英] Does Objective-C have an equivalent to Swift's @escaping annotation?

问题描述

在Swift中，转义的闭包参数用@escaping注释.在Objective-C中是否有任何等效项，以便将生成的Swift接口标记为@escaping?

解决方案

是的，但是与您在问题中的建议相反.规则是，除非明确标记(NS_NOESCAPE ^)，否则将Objective-C不可为空的块自动作为@escaping函数 转换为Swift.

In Swift, escaping closure parameters are annotated with @escaping. Is there any equivalent in Objective-C so that the generated Swift interfaces will be marked as @escaping?

解决方案

Yes, but it's backwards from what you suggest in your question. The rule is that an Objective-C nonnullable block is translated into Swift as an @escaping function automatically, unless it is explicitly marked (NS_NOESCAPE ^).

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