Object Either.Either

object Either

Supertypes	trait Sum trait Mirror class Object trait Matchable class Any
Self type	Either.type

Classlikes

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final case class LeftProjection[+A, +B](e: Either[A, B])

Projects an Either into a Left.

See also	scala.util.Either#left

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final implicit class MergeableEither[A](x: Either[A, A]) extends AnyVal

Allows use of a merge method to extract values from Either instances regardless of whether they are Left or Right.

val l = Left(List(1)): Either[List[Int], Vector[Int]]
val r = Right(Vector(1)): Either[List[Int], Vector[Int]]
l.merge: Seq[Int] // List(1)
r.merge: Seq[Int] // Vector(1)

Inherited types

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type MirroredElemLabels <: Tuple

The names of the product elements

Inherited from	Mirror

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type MirroredLabel <: String

The name of the type

Inherited from	Mirror

Concrete methods

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def cond[A, B](test: Boolean, right: => B, left: => A): Either[A, B]

If the condition is satisfied, return the given B in Right, otherwise, return the given A in Left.

val userInput: String = readLine()
Either.cond(
  userInput.forall(_.isDigit) && userInput.size == 10,
  PhoneNumber(userInput),
  s"The input ($userInput) does not look like a phone number"

Implicits

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final implicit def MergeableEither[A](x: Either[A, A]): MergeableEither[A]

Allows use of a merge method to extract values from Either instances regardless of whether they are Left or Right.

val l = Left(List(1)): Either[List[Int], Vector[Int]]
val r = Right(Vector(1)): Either[List[Int], Vector[Int]]
l.merge: Seq[Int] // List(1)
r.merge: Seq[Int] // Vector(1)