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kotlinlang

Are there interfaces associated with overloadable operators? E.g. a `Plus` for the `plus()` method. It would be great to be able to define `sum()` on an `Iterable&lt;Plus&gt;`, for instance.

There is no such thing, as far as I know. Of course, you could make it yourself and define an extension method for `Iterable&lt;Plus&gt;`, but it wouldn't support types you don't create yourself. There is a proposal right now to add the ability to extend existing classes, which would allow what you're looking for

easiest way to do that is using ad-hoc polymorphism <http://beust.com/weblog/2016/06/20/ad-hoc-polymorphism-in-kotlin/>

I’ll take a look, thanks. I’m spoiled by Rust…

<@U0B8FU678> sadly the java-interop made things abit harder as they should be