<@U0D06TWMA> using `when` on an instance of `Speci...

# announcements

[damian]

@Andreas Sinz using when on an instance of SpecificExceptions the auto-completion for all branches at least doesn’t work

[Andreas Sinz]

@damian with all branches you mean ErrorOne and ErrorTwo?

[damian]

yes, it’s only giving me ErrorTwo as possibility

[Andreas Sinz]

if you have an instance of SpecificExcetpions, it cannot be an instance of ErrorOne?

[damian]

at least thats what the auto-completion of the when branches is telling me; also red-underine with “incompatible types”

[Andreas Sinz]

but its not possible with ordinary classes too?

[damian]

what do you mean?

[Andreas Sinz]

ErrorOne is not a subclass of SpecificExceptions, so an instance of SpecificExceptions can not be ErrorOne

[damian]

yes that is true. that’s why i was thinking / asking if there’s a way to extend sealed classes, or to inherit the collection of classes in a sealed class and add new ones in another class

[Andreas Sinz]

Extending sealed classes is not possible, because that would make sealed classes useless

[Andreas Sinz]

you could create something like class SpecificBaseException(val exception: BaseException)

[damian]

hmm. i’ll see if i can make it work for my use-case. thanks