As Operator Overload

[xwu (Xiaodi Wu)]

@Jean-Daniel

This documentation is probably obsolete. I can't see how Swift String and NSString can share the same memory layout, as they don't even have the same base representation (UTF-16 vs UTF-8).

Moreover, Swift types are value types, and Obj-C type are reference, so they really can't share the same memory layout. While this comment was true for bridging between NS and CF types, this probably don't apply to Swift types.

A lot of engineering went into making sure that Swift String will continue to bridge seamlessly with UTF-16 NSString instances. The String storage class is an actual subclass of NSString at runtime.