Why can't a Dictionary be safe

Why can't a Dictionary be safe_cast to an Object

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Dave - 16 Oct 2007 14:55 GMT

Why can't I safe_cast a Dictionary to an Object?

Generic::Dictionary<String^, String^> Dict = gcnew
Generic::Dictionary<String^, String^>();
Object^ DictObject = safe_cast<Object ^>(Dict);

Anyone know why the compiler won't handle this syntax?

Dave

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Cholo Lennon - 16 Oct 2007 16:05 GMT

> Why can't I safe_cast a Dictionary to an Object?
>
[quoted text clipped - 5 lines]
>
> Dave

You have a mistake in your 'Dict' declaration. You have to declare it like a
managed reference:

Generic::Dictionary<String^, String^>^ Dict = gcnew Generic::Dictionary<String^,
String^>();

Regards

--
Cholo Lennon
Bs.As.
ARG

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Dave - 16 Oct 2007 16:35 GMT

Thanks, that fixed it

>> Why can't I safe_cast a Dictionary to an Object?
>>
[quoted text clipped - 20 lines]
> Bs.As.
> ARG

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Ben Voigt [C++ MVP] - 16 Oct 2007 17:32 GMT

>> Why can't I safe_cast a Dictionary to an Object?
>>
[quoted text clipped - 13 lines]
> Generic::Dictionary<String^,
> String^>();

This should also work:

Generic::Dictionary<String^, String^> Dict;
Object^ DictObject = %Dict; // managed address-of -- but managed
deference is still *, not ^ if I remember right

> Regards
>
> --
> Cholo Lennon
> Bs.As.
> ARG

Reply to this Message

Why can't a Dictionary be safe_cast to an Object

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