所以你应该去[String：Any]。@H_502_2@

Type Casting for Any and AnyObject@H_502_2@

Swift provides two special types for working with nonspecific types:@H_502_2@

• Any can represent an instance of any type at all,including function
  types.
• AnyObject can represent an instance of any class type.

NOTE:@H_502_2@

Use Any and AnyObject only when you explicitly need the behavior and
capabilities they provide. It is always better to be specific about
the types you expect to work with in your code.@H_502_2@

从Swift编程语言：
https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/TypeCasting.html#//apple_ref/doc/uid/TP40014097-CH22-ID342@H_502_2@

– – @H_502_2@

还要注意，当您使用Cocoa API时，通常接收AnyObject数组，这是因为Objective-C数组不是典型的。
所以你需要将它们转换为你期望的数组类型。@H_502_2@

– – @H_502_2@

编辑：(2015年12月22日)
在最后一条语句中，注意这是随着Swift 2.0和Xcode 7而改变。
苹果在Objective-C中引入了‘Lightweight’ generics，所以很多Cocoa API现在已经返回了正确的类型。@H_502_2@

编辑：(2016年10月18日)注意，从Swift 3.0开始，Objective-C id现在被导入为Any，而不是AnyObject。@H_502_2@