structs inheriting from and implementing interfaces

[flamencofantasy]

On Saturday, 30 December 2017 at 16:23:05 UTC, Steven 
Schveighoffer wrote:
> On 12/29/17 7:03 AM, Mike Franklin wrote:
>
>> 
>> Is that simply because it hasn't been implemented or suggested 
>> yet for D, or was there a deliberate design decision?
> It was deliberate, but nothing says it can't actually be done. 
> All an interface call is, is a thunk to grab the actual object, 
> and then a call to the appropriate function from a static 
> vtable. It's pretty doable to make a fake interface. In fact, 
> I'm pretty sure someone did just this, I have no idea how far 
> back in the forums to search, but you can probably find it.
>
> Now, it would be nicer if the language itself supported it. And 
> I don't see any reason why it couldn't be supported. The only 
> issue I think could be an ABI difference between member calls 
> of structs and classes, but I think they are the same.
>
> -Steve

Don't forget to implement boxing/unboxing and then write a long 
blog post on all the dangers and negative effects of using 
interfaces with structs.