NSDictionary与Swift中的Dictionary之间有什么区别？ [英] What is difference between NSDictionary vs Dictionary in Swift?

问题描述

我正在学习Swift，我可以看到字典。

但是有很多使用 NSDictionary 与Swift。

这两者有什么区别？

我想使用一个索引的数组Swift喜欢PHP中的一个数组。

哪个更好使用？

I'm learning Swift, and I can see Dictionary in it.
But there are lots of examples that are using NSDictionary with Swift.
What's the difference between these two?
I want to use an array with index in Swift like an array in PHP.
Which one is better to use?

推荐答案

词典是一个本机的Swift结构体。 NSDictionary是一个Cocoa类。它们相互桥接（在通常的限制内），正如文档解释非常清楚和完整的。

Dictionary is a native Swift struct. NSDictionary is a Cocoa class. They are bridged to one another (within the usual limits), as the docs explain very clearly and fully.

它与Array和NSArray完全相同。

It's exactly parallel to Array and NSArray.

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