Alternative for Either pattern matching

Question

Is there any for the following kind of pattern matching of Either? Something like map on both Right and Left to return an Either of different type. I don't want to specify Left and Right everywhere.

val v:Either[Throwable, String] = Right("Hello")
val result: Either[Int, String] = v match {
  case Left(ex) => Left(ex.getMessage.size)
  case Right(m) => Right(m)
}

Answer 1

In the following, you don't have to use pattern matching

v.left.map(_.getMessage).right.map(_)