如何將NSDictionary的元素複製到swift字典？

Question

我需要在swift中變異NSDictionary。

因此，我需要將該NSDictionary的元素複製到swiftDictionary。

有點像Objective-C的等效

[[NSMutableDictionary alloc] initWithDictionary:(nonnull NSDictionary *)]; 

Answer 1

詞典的是在迅速一struct，這是一個值類型。

let firstDictionary = .... 
let copyOfirstDictionary = firstDictionary// This will copy the contents from first dictionary to another.