Scala Either map Right or return Left

Question

Is it possible to handle Either in similar way to Option? In Option, I have a getOrElse function, in Either I want to return Left or process Right. I'm looking for the fastest way of doing this without any boilerplate like:

val myEither:Either[String, Object] = Right(new Object())
myEither match {
    case Left(leftValue) => value
    case Right(righValue) => 
        "Success"
}

Answer 1

In Scala 2.12,

Either is right-biased, which means that Right is assumed to be the default case to operate on. If it is Left, operations like map, flatMap, ... return the Left value unchanged

so you can do

myEither.map(_ => "Success").merge

if you find it more readable than fold.