this T / variadic template and interfaces
frame86 at live.com
Mon Oct 26 12:00:47 UTC 2020
On Monday, 26 October 2020 at 11:48:48 UTC, Simen Kjærås wrote:
> This makes sense if you consider that the user of the interface
> has no knowledge of the types that implement it, and vice
> versa: the implementing class has no idea which instantiations
> to make, and the user has no idea which implementing classes to
> create instantiations for. Templates require that the user have
> full knowledge of the templates to be instantiated.
> There are some workarounds of sorts, but they depend heavily on
> what you're trying to achieve. Can you use an array of
> std.variant.Variant, for instance?
Yes, the user/coder does not know of other types by any chance.
The interface must be used.
Well I guess I let the interface do the variadic stuff and pass
the argument as Variant to the wrapper in a new interface
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