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trait Lens[Container, A] extends Any

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Abstract Value Members

  1. abstract def get(c: Container): A

    get knows how to extract some field of type A from a container

  2. abstract def getClass(): Class[_]
    Definition Classes
    Any
  3. abstract def set(a: A): Mutation[Container]

    Represents an assignment operator.

    Represents an assignment operator.

    Given a value of type A, sets knows how to transform a container such that a is assigned to the field.

    We must have get(set(a)(c)) == a

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    Any
  2. final def ##(): Int
    Definition Classes
    Any
  3. def :=(a: A): Mutation[Container]

    alias to set

  4. final def ==(arg0: Any): Boolean
    Definition Classes
    Any
  5. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  6. def compose[B](other: Lens[A, B]): Lens[Container, B]

    Composes two lenses, this enables nesting.

    Composes two lenses, this enables nesting.

    If our field of type A has a sub-field of type B, then given a lens for it (other: Lens[A, B]) we can create a single lens from Container to B.

  7. def equals(arg0: Any): Boolean
    Definition Classes
    Any
  8. def hashCode(): Int
    Definition Classes
    Any
  9. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  10. def modify(f: (A) ⇒ A): Mutation[Container]

    Represent an update operator (like x.y += 1 )

  11. def setIfDefined(aOpt: Option[A]): Mutation[Container]

    Optional assignment.

    Optional assignment.

    Given a Some[A], assign the Some's value to the field. Given None, the container is unchanged.

  12. def toString(): String
    Definition Classes
    Any
  13. def zip[B](other: Lens[Container, B]): Lens[Container, (A, B)]

    Given two lenses with the same origin, returns a new lens that can mutate both values represented by both lenses through a tuple.

Inherited from Any

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