jdarais commented on issue #365:
URL: https://github.com/apache/avro-rs/issues/365#issuecomment-3695033828
@antonsmetanin @Kriskras99 regarding mixing of unit variants with struct
variants in rust enum types, it should work if you treat the rust unit type as
avro null. I think this is also the mapping used for `serialize_unit` in the
`Serializer` implementation in both `ser.rs` and `ser_schema.rs`.
With this, having a rust enum type with two unit variants and a struct
variant (e.g. `enum MyEnum { A, B, C {} }` would be invalid since both A and B
would be mapped to null, and avro union can't have duplicate types, but having
a single unit variant combined with struct variants would be valid. This also
works with rust's `Option` type without modification, which would map `None` to
null.
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