Is there an existing utility/extension function th...

# arrow

[Robert Menke]

Is there an existing utility/extension function that converts R? to Either<L, R>? Something like

fun <L, R> R?.toEither(f: () -> L): Either<L, R> {
    return Option
        .fromNullable(this)
        .toEither(f)
}

[Imran/Malic]

you mean right()
this turns an A to an Either<Nothing, A>

[Imran/Malic]

If you do want to have that f function you would use `rightIfNotNull`:

B?.rightIfNotNull(default: () -> A): Either<A, B>

[pakoito]

@Robert Menke that’s exactly what you need 😄

[Robert Menke]

Ahh awesome thanks @Imran/Malic and @pakoito 🙂