Can ProtoBuf serialize a class with nullable properties? I try: ```fun main() { @Serializable ...

# serialization

[Ian]

Can ProtoBuf serialize a class with nullable properties?

I try:

fun main() {
    @Serializable data class Foo(val nn : Int?)

    val s = ProtoBuf.encodeToByteArray(Foo.serializer(), Foo(null))
}

But get:

Exception in thread "main" kotlinx.serialization.SerializationException:
 'null' is not supported in ProtoBuf

I've also tried using:

val s = ProtoBuf { encodeDefaults = false }.encodeToByteArray(Foo.serializer(), Foo(null))

But this doesn't help.

Any pointers appreciated.

[Vampire]

Just a wild guess from what you have shown. Maybe if you define null as default value (and if necessary define not to encode default values) it might work as then there is no need to encode the unsupported null

[Ian]

Ah, yes - thank you, that worked!