Re: [PATCH v2 27/28] rust: types: add `Either` type

[Josh Triplett]

On Fri, Dec 02, 2022 at 05:14:58PM +0100, ojeda@xxxxxxxxxx wrote:
> From: Wedson Almeida Filho <wedsonaf@xxxxxxxxx>
> 
> Introduce the new `types` module of the `kernel` crate with
> `Either` as its first type.
> 
> `Either<L, R>` is a sum type that always holds either a value
> of type `L` (`Left` variant) or `R` (`Right` variant).
> 
> For instance:
> 
>     struct Executor {
>         queue: Either<BoxedQueue, &'static Queue>,
>     }

This specific example seems like it would be better served by the
existing `Cow` type.