[swift-evolution] [Pitch] Add the DefaultConstructible protocol to the standard library

[Xiaodi Wu]

It's not, as far as I'm aware, working on master.

In any case, though, Box(T()) would be just as ergonomic as Box<T>() in
Swift, which I don't think is the case in Rust, and the former is already
possible without the need for conditional conformances.

On Tue, Jan 3, 2017 at 16:57 David Sweeris via swift-evolution <
swift-evolution at swift.org> wrote:

>
> > On Jan 3, 2017, at 11:31 AM, Alexis via swift-evolution <
> swift-evolution at swift.org> wrote:
> >
> > All in all, I don’t really have an opinion on whether Default makes
> sense for Swift. Haven’t thought about it all that much. Swift is still
> missing the features that make case 1 and 2 even viable motivations
> (conditional conformance and derive annotations), and I believe already
> mandates default initializers in several of the cases where 3 is relevant.
> I *think* conditional conformance has already been accepted and just
> hasn’t been implemented yet, at least not in an official “can use to
> publish to app store” toolchain release.
>
> - Dave Sweeris
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