I can't deconstruct `Result` (<https://kotlinlang....

# getting-started

[reactormonk]

I can't deconstruct Result (https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-result/) with a when?

[Youssef Shoaib [MOD]]

Sadly, no. There's a YouTrack issue for `sealed value class`es that would fix this. Also, Refined types would fix this as well:

typealias Success<T> = Result<T> satisfies Result::isSuccess
typealias Failure = Result<Any?> satisfies Result::isFailure
val <T> Success<T>.value get() = getOrElse { error("Unexpected") }
val Failure.error get() = exceptionOrNull()!!

// Assuming that `is/as` work in the obvious way
when (result) {
  is Success -> value.doSomething()
  is Failure -> error.doSomethingElse()
}

[reactormonk]

Ah thanks. I guess that makes Result a lot less useful.

[Youssef Shoaib [MOD]]

Personally, I only use Result when dealing with low-level Coroutines code

[CLOVIS]

If you want to use functional-style result types, see #C5UPMM0A0’s Either . That's not what Result is meant for, so it won't be convenient.