• Antonio (7/7) Jul 04 2022 D offers `SumType` struct to manage tagged Union types.
• Paul Backus (11/13) Jul 04 2022 You can "inherit" from a struct using `alias this`:

Antonio <antonio abrevia.net> writes:

D offers `SumType` struct to manage tagged Union types.

But there is no support for managing it's Json 
serialization/deserialization (using vibe.d)

Is it a way to add `fromRepresentation` and `toRepresentation` to 
`SumType` (or a way for creating a custom struct "inheriting" 
SumType with serialization capabilities)?

Thank you for advanced.

Paul Backus <snarwin gmail.com> writes:

On Monday, 4 July 2022 at 11:35:24 UTC, Antonio wrote:
 (or a way for creating a custom struct "inheriting" SumType 
 with serialization capabilities)?

You can "inherit" from a struct using `alias this`:

```d
struct CustomStruct
{
     SumType!(A, B, C) unwrap;
     alias unwrap this;

     // serialization stuff here
}
```

Documentation: https://dlang.org/spec/class.html#alias-this