DIP66 - Multiple alias this

[IGotD-]

On Sunday, 27 September 2020 at 23:34:31 UTC, 12345swordy wrote:
>
> What do you need multi alias this for anyway? Composite 
> programming can already do what alias this can do expect 
> implicit conversion.
>
> -Alex

Yes, exactly that, creating multiple composites. I know that you 
can do it with mixin templates but kind of ugly. So if I have an 
implementation, I need a struct with that implementation in it's 
pure form and also structs where the implementation is inserted. 
Now you have a disconnected implementation and then a base struct 
to begin with. So if you want to reuse your code you basically 
have to make mixin templates of everything. Was it that solution 
you were referring to?