[rust-dev] RFC: New Rust channel proposal

Eric Reed ecreed at cs.washington.edu
Tue Jan 14 21:21:37 PST 2014


fn foo<T: Trait>() -> T


On Tue, Jan 14, 2014 at 9:20 PM, Jack Moffitt <jack at metajack.im> wrote:

> You can't do `foo() -> Trait`. It would have to be `foo() -> ~Trait`.
> Well, unless DST fixes this. I assume this is the same reason we
> return specific instances of iterators instead of an Iteratable trait
> object.
>
> jack.
>
> On Tue, Jan 14, 2014 at 10:10 PM, Eric Reed <ecreed at cs.washington.edu>
> wrote:
> > How would that make us lose stack allocated return values?
> >
> >
> > On Tue, Jan 14, 2014 at 5:22 PM, Jack Moffitt <jack at metajack.im> wrote:
> >>
> >> > Good point. Make `Chan` a trait with implementers `UniqueChan` and
> >> > `SharedChan`?
> >>
> >> I suppose the main downside of that solution is that you lose stack
> >> allocated return values.
> >>
> >> jack.
> >
> >
>
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