Something like ADL from C++?

[Alexandru Ermicioi]

On Thursday, 5 December 2024 at 21:58:14 UTC, Richard (Rikki) 
Andrew Cattermole wrote:
> If you are forcing users of a parent class to add the call 
> explicitly into the parent, its a major pain that other 
> languages simply do not have. Not to mention easily forgotten.
>
> This is what my attribute that I said I'm thinking about 
> ``@reinterptAsChild`` would solve.

I'm confused for example. What is the problem you're mentioning 
here?

If it is inheritance, then you either predefine the inheritance 
structure through annotations just like Jakson lib in java 
https://www.javadoc.io/doc/com.fasterxml.jackson.core/jackson-annotations/latest/com/fasterxml/jackson/annotation/JsonTypeInfo.html, or use runtime reflection to check what child it is and use respective serializer for it that is prerecorded.