Tagged unions / enums with data on them

[esthedebeste]

enum Tagged<T> : uint8 {
    A: uint32,
    B,
    C: double,
    D: SomeStruct<T>,
    E,
    F: uint32,
}

Default representation should probably be uint64 because big

[esthedebeste]

Correction: default representation should probably be uint32 because big enough and normal