scala

Left

class Left[+A, +B](a: A) extends Either[A, B] with Product

The left side of the disjoint union, as opposed to the Right side.

attributes: final

Inherits

  1. Product
  2. Equals
  3. Either
  4. AnyRef
  5. Any

Value Members

  1. val a: A

  2. def canEqual(arg0: Any): Boolean

    A method that should be called from every well-designed equals method that is open to be overridden in a subclass

    A method that should be called from every well-designed equals method that is open to be overridden in a subclass. See Programming in Scala, Chapter 28 for discussion and design.

  3. def equals(arg0: Any): Boolean

    The equality method defined in AnyRef

    The equality method defined in AnyRef.

  4. def fold[X](fa: (A) ⇒ X, fb: (B) ⇒ X): X

    Deconstruction of the Either type (in contrast to pattern matching)

    Deconstruction of the Either type (in contrast to pattern matching).

    definition classes: Either
  5. def hashCode(): Int

    Returns a hash code value for the object

    Returns a hash code value for the object.

    The default hashing algorithm is platform dependent.

    Note that it is allowed for two objects to have identical hash codes (o1.hashCode.equals(o2.hashCode)) yet not be equal (o1.equals(o2) returns false). A degenerate implementation could always return 0. However, it is required that if two objects are equal (o1.equals(o2) returns true) that they have identical hash codes (o1.hashCode.equals(o2.hashCode)). Therefore, when overriding this method, be sure to verify that the behavior is consistent with the equals method.

  6. def isLeft: Boolean

    Returns true if this is a Left, false otherwise

    Returns true if this is a Left, false otherwise.

  7. def isRight: Boolean

    Returns true if this is a Right, false otherwise

    Returns true if this is a Right, false otherwise.

  8. def joinLeft[A1 >: A, B1 >: B, C](ev: <:<[A1, Either[C, B1]]): Either[C, B1]

    Joins an Either through Left

    Joins an Either through Left.

    definition classes: Either
  9. def joinRight[A1 >: A, B1 >: B, C](ev: <:<[B1, Either[A1, C]]): Either[A1, C]

    Joins an Either through Right

    Joins an Either through Right.

    definition classes: Either
  10. def left: LeftProjection[A, B]

    Projects this Either as a Left

    Projects this Either as a Left.

    definition classes: Either
  11. def productArity: Int

    return k for a product A(x_1,

    return k for a product A(x_1,...,x_k)

  12. def productElement(arg0: Int): Any

    for a product A(x_1,

    for a product A(x_1,...,x_k), returns x_(n+1) for 0 <= n < k

  13. def productElements: Iterator[Any]

  14. def productIterator: Iterator[Any]

    An iterator that returns all fields of this product

    An iterator that returns all fields of this product

    definition classes: Product
  15. def productPrefix: String

    By default the empty string

    By default the empty string. Implementations may override this method in order to prepend a string prefix to the result of the toString methods.

  16. def right: RightProjection[A, B]

    Projects this Either as a Right

    Projects this Either as a Right.

    definition classes: Either
  17. def swap: Product with Either[B, A]

    If this is a Left, then return the left value in Right or vice versa

    If this is a Left, then return the left value in Right or vice versa.

    definition classes: Either
  18. def toString(): String

    Returns a string representation of the object

    Returns a string representation of the object.

    The default representation is platform dependent.

Instance constructors

  1. new Left(a: A)

  2. new Left()