为什么关键字“强"在非ARC环境中的属性上使用? [英] Why a keyword "strong" is used on a property in non-ARC environment?

问题描述

我刚刚开始使用Xcode 4.2和iOS5进行开发.创建空的选项卡式应用程序项目后，我注意到在属性上使用了新的关键字"strong".我在这篇文章上读到有关它与在ARC环境中保留替换有关的信息，但是情况并非如此，因为我没有选中使用自动引用计数"复选框.

I just started to develop with with Xcode 4.2 and iOS5. After creating empty Tabbed application project, I have noticed that a new keyword "strong" is used on properties. I read on this post about it being related to retain replacement in ARC environment, but it's not the case because I didn't checked "Use Automatic Reference Counting" check box.

推荐答案

在非ARC环境中，关键字"Strong"是"retain"的同义词.

The keyword "Strong" is a synonym for "retain" in non-ARC environments.

对于ARC环境，请在此处阅读: http://clang. llvm.org/docs/AutomaticReferenceCounting.html#ownership.spelling.property

For ARC-envs read up here: http://clang.llvm.org/docs/AutomaticReferenceCounting.html#ownership.spelling.property

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