Do instance references really work in Swift?

Question

I wrote the Objective-C code first

NSMutableString *aStrValue = [NSMutableString stringWithString:@\"Hello\"];
NSMutableDictionary *aMutDict = [NSMutableDict         


        

Answer 1

In swift, String is a Struct. Structs are not reference types in Swift, thus it's copied when you setting it to a dictionary.