在Core Data中，应该用于NSManaged对象的URI属性类型是什么？ [英] In Core Data, what is the URI property type on the NSManaged object supposed to be used for?

问题描述

1. 为什么需要URI类型？


2. URI属性的等效Swift对象类型是什么？


3. 我是否将URL存储在此属性中？


4. 我是否曾经想过以这种方式存储另一个托管对象的URI，但是否与此有关？

此外，指向描述用法的任何Apple文档的链接也会很有帮助。

解决方案

在

为什么需要URI类型？

要存储URL。

URI属性的等效Swift对象类型是什么？

与 NSURL 等效的Swift是 URL 。

我是否将URL存储在此属性中？

我怀疑我曾经会想以这种方式存储另一个托管对象的URI，但是它是否相关？

可能，但可能不是一个好方法理念。关系会更好。尽管如此，在某些情况下这样做还是有意义的。

1. Why would you need the URI type?
2. What is the equivalent Swift object type for a URI property?
3. Would I store a URL in this property?
4. I'm doubtful that I would ever want to store the URI for another managed object in this way, but is it related?

Also, a link to any Apple docs that describe the usage would be helpful.

解决方案

In the WWDC 2017 "What's New in Core Data" session, one of the slides indicates:

Why would you need the URI type?

To store a URL.

What is the equivalent Swift object type for a URI property?

The Swift equivalent of NSURL is URL.

Would I store a URL in this property?

That is the purpose of the type.

I'm doubtful that I would ever want to store the URI for another managed object in this way, but is it related?

Possible, but probably not a good idea. A relationship would be better. Still, there might be cases where it makes sense to do this.

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