Is it possible to have kotlin Result be exhaustive it seems to hide Success and Failure so I want to...

# android

[David Corrado]

Is it possible to have kotlin Result be exhaustive it seems to hide Success and Failure so I want to basically do something like this within a extension function

fun <T> Result<T>.toDataState(): DataState<T> {
    onFailure {
        return DataState.failure()
    }.onSuccess {
        return DataState.success(it)
    }
}

But you can not because onFailure and onSuccess is not exhaustive. How have you done this?

[Casey Brooks]

You can use Result<T>.fold() for this

[ephemient]

also equivalent to

return result.map {
    Data.Success(it)
}.getOrElse {
    Data.Failure()
}

which isn't the best choice for this application but you might use something similar if the transform itself can throw and you want to flatten that error (e.g. with mapCatching, recoverCatching)

[Manish Jain]

@David Corrado I have created a object class for this.Please check and let me know it would be work as you expected

ResponseHandler.kt