[swift-users] type casting for Dictionaries keys

[Adrian Zubarev]

It's because AnyHashable is not an existential like Any but a value type (I believe it was a struct) which erases the type restriction from your Hashable type. Simply look up AnyHashable.

--  
Adrian Zubarev
Sent with Airmail  

Am 23. März 2017 um 12:07:16, Седых Александр via swift-users (swift-users at swift.org(mailto:swift-users at swift.org)) schrieb:

>  
> Hello again :)
>  
> I have another question.
>  
> Why Type casting for Keys of Dictionaries don't work
>  
>  
> enum Key {
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>  
> case one
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>  
> }
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>  
>  
>  
>  
> let dict: [AnyHashable: Any] = [Key.one : "Hello"]
>  
>  
> let unwrap: [Key: Any] = dict as! [Key : Any] // error
>  
>  
>  
>  
> --
> Седых Александр _______________________________________________
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