RightProjection

scala.util.Either$.RightProjection
final case class RightProjection[+A, +B](e: Either[A, B])

Projects an Either into a Right.

Because Either is already right-biased, this class is not normally needed. (It is retained in the library for now for easy cross-compilation between Scala 2.11 and 2.12.)

Attributes

Deprecated
true
Source:
Either.scala
Graph
Supertypes
trait Product
trait Equals
class Object
trait Matchable
class Any

Members list

Concise view

Value members

Concrete methods

def exists(p: B => Boolean): Boolean

Returns false if Left or returns the result of the application of the given function to the Right value.

Returns false if Left or returns the result of the application of the given function to the Right value.

Right(12).right.exists(_ > 10)  // true
Right(7).right.exists(_ > 10)   // false
Left(12).right.exists(_ > 10)   // false

Attributes

Source:
Either.scala
def filterToOption[A1](p: B => Boolean): Option[Either[A1, B]]

Returns None if this is a Left or if the given predicate p does not hold for the right value, otherwise, returns a Right.

Returns None if this is a Left or if the given predicate p does not hold for the right value, otherwise, returns a Right.

Right(12).right.filterToOption(_ > 10) // Some(Right(12))
Right(7).right.filterToOption(_ > 10)  // None
Left(12).right.filterToOption(_ > 10)  // None

Attributes

Source:
Either.scala
def flatMap[A1 >: A, B1](f: B => Either[A1, B1]): Either[A1, B1]

Binds the given function across Right.

Binds the given function across Right.

Attributes

f

The function to bind across Right.

Source:
Either.scala
def forall(f: B => Boolean): Boolean

Returns true if Left or returns the result of the application of the given function to the Right value.

Returns true if Left or returns the result of the application of the given function to the Right value.

Right(12).right.forall(_ > 10) // true
Right(7).right.forall(_ > 10)  // false
Left(12).right.forall(_ > 10)  // true

Attributes

Source:
Either.scala
def foreach[U](f: B => U): Unit

Executes the given side-effecting function if this is a Right.

Executes the given side-effecting function if this is a Right.

Right(12).right.foreach(x => println(x)) // prints "12"
Left(12).right.foreach(x => println(x))  // doesn't print

Attributes

f

The side-effecting function to execute.

Source:
Either.scala
def getOrElse[B1 >: B](or: => B1): B1

Returns the value from this Right or the given argument if this is a Left.

Returns the value from this Right or the given argument if this is a Left.

Right(12).right.getOrElse(17) // 12
Left(12).right.getOrElse(17)  // 17

Attributes

Source:
Either.scala
def map[B1](f: B => B1): Either[A, B1]

The given function is applied if this is a Right.

The given function is applied if this is a Right.

Right(12).right.map(x => "flower") // Result: Right("flower")
Left(12).right.map(x => "flower")  // Result: Left(12)

Attributes

Source:
Either.scala

Returns a Some containing the Right value if it exists or a None if this is a Left.

Returns a Some containing the Right value if it exists or a None if this is a Left.

Right(12).right.toOption // Some(12)
Left(12).right.toOption // None

Attributes

Source:
Either.scala
def toSeq: Seq[B]

Returns a Seq containing the Right value if it exists or an empty Seq if this is a Left.

Returns a Seq containing the Right value if it exists or an empty Seq if this is a Left.

Right(12).right.toSeq // Seq(12)
Left(12).right.toSeq // Seq()

Attributes

Source:
Either.scala

Deprecated methods

def filter[A1](p: B => Boolean): Option[Either[A1, B]]

Returns None if this is a Left or if the given predicate p does not hold for the right value, otherwise, returns a Right.

Returns None if this is a Left or if the given predicate p does not hold for the right value, otherwise, returns a Right.

Right(12).right.filter(_ > 10) // Some(Right(12))
Right(7).right.filter(_ > 10)  // None
Left(12).right.filter(_ > 10)  // None

Attributes

Deprecated
true
Source:
Either.scala
def get: B

Returns the value from this Right or throws NoSuchElementException if this is a Left.

Returns the value from this Right or throws NoSuchElementException if this is a Left.

Right(12).right.get // 12
Left(12).right.get // NoSuchElementException

Attributes

Throws:

NoSuchElementException if the projection is Left.

Deprecated
true
Source:
Either.scala

Inherited methods

An iterator over the names of all the elements of this product.

An iterator over the names of all the elements of this product.

Attributes

Inherited from:
Product
Source:
Product.scala

An iterator over all the elements of this product.

An iterator over all the elements of this product.

Attributes

Returns:

in the default implementation, an Iterator[Any]

Inherited from:
Product
Source:
Product.scala