interface function member declarations needing parameter attributes ?

[someone]

On Saturday, 17 July 2021 at 21:01:00 UTC, Adam Ruppe wrote:

> No, they are very different.

So the lesson learned is that interfaces can also mandate member 
function's parameter attributes then ... right ?

> But you also don't gain much from const here and that ref is 
> probably actively harmful so i wouldn't use them here.

ref is gone.