how can I get type safety on a `sealed class` `whe...

# announcements

[zak.taccardi]

how can I get type safety on a sealed class when statement, when used within an rx stream?

ex:

private val handleDealOperation: (DealOperation) -> State.Change = {
            operation ->
            when (operation) {
                //how to enforce type safety? `DealOperation` is a sealed class
            }
        }

Trying to be typesafe in the context of an rx stream.

source.map(handleDealOperation)

[Paul Woitaschek]

zak.taccardi: what's the issue? You should be able to add sth like:
is DealOp.abc -> Change.A
...

[zak.taccardi]

yeah, I can manually add it. but I want the compiler to force me with that when

[Paul Woitaschek]

I don't get it. What is not typesafe about your solution?