this T / variadic template and interfaces

[frame]

On Monday, 26 October 2020 at 13:02:33 UTC, Jacob Carlborg wrote:
> On Monday, 26 October 2020 at 11:14:47 UTC, frame wrote:
>
>> Is there any way to get this working? I know, I could use a 
>> known object to feed the arguments and use that instead - but 
>> I want to keep things simple as possible.
>
> As Simen mentioned, templates cannot be virtual. But you don't 
> need to use a template, you can use a regular variadic method 
> [1]. It's a bit more clunky to work with than template variadic 
> functions. Or if all the arguments will be of the same type, 
> you can use type safe variadic functions [2], which are easier 
> to work with.
>
> [1] 
> https://dlang.org/spec/function.html#d_style_variadic_functions
> [2] 
> https://dlang.org/spec/function.html#typesafe_variadic_functions
>
> --
> /Jacob Carlborg

Hmm, a question of design. Is there also a convenient way to pass 
the arguments to a template or get a Variant[] from it?