Syntax sugar for {} with structs

[Nick Treleaven]

On Saturday, 2 July 2022 at 16:15:13 UTC, Ola Fosheim Grøstad 
wrote:
>> ```d
>> struct S{}
>>
>> void f();
>> void f(S s);
>>
>> f({}); // which gets called?
>> ```
>
> It is a parameter list for the constructor of S, so `F(S s)` 
> gets called.

So in D we would need a new type for a constructor parameter 
list. We already have parameter lists which have a type, but we 
can't use that because it would call `f()`, not `f(S)`.