Re: [Vala] casting out parameters

[pancake <pancake youterm com>]

And if it's a subclass? Which is what 'as' does.

----- Original message -----
> On Wed, 2010-05-26 at 15:41 +0200, pancake wrote:
> > Would love to see this dynamic casting supported by the language..
> > Should I open a bug?
>
> As Nor Jaidi Tuah wrote, the declaration of the method `test` does not
> guarantee that `foo` is set to an instance of `Bar`. The method could
> also be implemented as follows:
>
> void test(out Foo foo) {
>         foo = new Foo ();
> }
>
> If the compiler accepted your `main` method, you'd have a variable of
> type Bar pointing to an object of type Foo, and this should never
> happen. The compile error you get is intentional and not a bug.
>
> Jürg