D needs a type expression syntax

[Nick Treleaven]

On Saturday, 13 May 2023 at 11:13:59 UTC, Nick Treleaven wrote:
> It seems we could add this form to *Type* for consistency with 
> function literals:
> ```
> function RefOrAutoRefopt Type ParameterWithAttributes
> ```

https://github.com/dlang/dmd/pull/15243