__unsafe_unretained NSString struct var(__unsafe_unretained NSString struct var)

 我正在尝试创建一个结构，其中包含几个不同类型的变量。 
 
 有几种类型是NSString，但是尝试这样做会导致错误 
 
 ARC forbids Objective-C objects in structs or unions 
 
 因此阅读了我认为合理的补充错误 
 
__unsafe_unretained
 
 在NSString声明之前，我不知道这会产生什么后果，我已经快速浏览过并且发现了这篇详细的文章 ， 
 
 
 
 __强大 
 
 
 __弱 
 
 
 __unsafe_unretained 
 
 
 然而它对于NSString是怎么回事还是模糊不清，它们在结构中以__unsafe_unretained表示它，并且希望有人能告诉我发生了什么以及将来我需要考虑的关于内存和停止泄漏的内容。 
 
 任何帮助，将不胜感激。 

I am trying to create a structure that has several different variable of different types in it. 
 
several of the types are of NSString, but trying to do this was causing an error 
 
ARC forbids Objective-C objects in structs or unions 
 
so having read about the error I see its sensible to add 
 
__unsafe_unretained
 
before the NSString declaration, However I have no idea what the ramifications of this will be, I have had a quick read around and found this detailed post about the differences of 
 
 
 
__strong
 
 
__weak
 
 
__unsafe_unretained
 
 
however it was still abit vague about whats going on with a NSString thats in a struct with __unsafe_unretained infront of it and was hoping someone can tell me whats going on and what I need to think about in the future regarding memory and stopping any leaks.
 
any help would be appreciated.

原文：https://stackoverflow.com/questions/11857117