abstract class POptional[S, T, A, B] extends Serializable

A POptional can be seen as a pair of functions:

  • getOrModify: S => Either[T, A]
  • set : (B, S) => T

A POptional could also be defined as a weaker PLens and weaker PPrism

POptional stands for Polymorphic Optional as it set and modify methods change a type A to B and S to T. Optional is a type alias for POptional restricted to monomorphic updates:

type Optional[S, A] = POptional[S, S, A, A]
S

the source of a POptional

T

the modified source of a POptional

A

the target of a POptional

B

the modified target of a POptional

Self Type
POptional[S, T, A, B]
See also

monocle.law.OptionalLaws

Linear Supertypes
Serializable, Serializable, AnyRef, Any
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Inherited
  1. POptional
  2. Serializable
  3. Serializable
  4. AnyRef
  5. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new POptional()

Abstract Value Members

  1. abstract def getOption(s: S): Option[A]

    get the target of a POptional or nothing if there is no target

  2. abstract def getOrModify(s: S): Either[T, A]

    get the target of a POptional or return the original value while allowing the type to change if it does not match

  3. abstract def modify(f: (A) ⇒ B): (S) ⇒ T

    modify polymorphically the target of a POptional with a function

  4. abstract def modifyF[F[_]](f: (A) ⇒ F[B])(s: S)(implicit arg0: Applicative[F]): F[T]

    modify polymorphically the target of a POptional with an Applicative function

  5. abstract def set(b: B): (S) ⇒ T

    get the modified source of a POptional

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. final def ^<->[C, D](other: PIso[A, B, C, D]): POptional[S, T, C, D]

    alias to composeIso

    alias to composeIso

    Annotations
    @inline()
  5. final def ^<-?[C, D](other: PPrism[A, B, C, D]): POptional[S, T, C, D]

    alias to composePrism

    alias to composePrism

    Annotations
    @inline()
  6. final def ^|->[C, D](other: PLens[A, B, C, D]): POptional[S, T, C, D]

    alias to composeLens

    alias to composeLens

    Annotations
    @inline()
  7. final def ^|->>[C, D](other: PTraversal[A, B, C, D]): PTraversal[S, T, C, D]

    alias to composeTraversal

    alias to composeTraversal

    Annotations
    @inline()
  8. final def ^|-?[C, D](other: POptional[A, B, C, D]): POptional[S, T, C, D]

    alias to composeOptional

    alias to composeOptional

    Annotations
    @inline()
  9. final def all(p: (A) ⇒ Boolean): (S) ⇒ Boolean

    check if there is no target or the target satisfies the predicate

    check if there is no target or the target satisfies the predicate

    Annotations
    @inline()
  10. final def asFold: Fold[S, A]

    view a POptional as a Fold

    view a POptional as a Fold

    Annotations
    @inline()
  11. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  12. final def asSetter: PSetter[S, T, A, B]

    view a POptional as a PSetter

    view a POptional as a PSetter

    Annotations
    @inline()
  13. final def asTraversal: PTraversal[S, T, A, B]

    view a POptional as a PTraversal

    view a POptional as a PTraversal

    Annotations
    @inline()
  14. final def choice[S1, T1](other: POptional[S1, T1, A, B]): POptional[Either[S, S1], Either[T, T1], A, B]

    join two POptional with the same target

    join two POptional with the same target

    Annotations
    @inline()
  15. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  16. final def composeFold[C](other: Fold[A, C]): Fold[S, C]

    compose a POptional with a Fold

    compose a POptional with a Fold

    Annotations
    @inline()
  17. final def composeGetter[C](other: Getter[A, C]): Fold[S, C]

    compose a POptional with a Getter

    compose a POptional with a Getter

    Annotations
    @inline()
  18. final def composeIso[C, D](other: PIso[A, B, C, D]): POptional[S, T, C, D]

    compose a POptional with a PIso

    compose a POptional with a PIso

    Annotations
    @inline()
  19. final def composeLens[C, D](other: PLens[A, B, C, D]): POptional[S, T, C, D]

    compose a POptional with a PLens

    compose a POptional with a PLens

    Annotations
    @inline()
  20. final def composeOptional[C, D](other: POptional[A, B, C, D]): POptional[S, T, C, D]

    compose a POptional with a POptional

    compose a POptional with a POptional

    Annotations
    @inline()
  21. final def composePrism[C, D](other: PPrism[A, B, C, D]): POptional[S, T, C, D]

    compose a POptional with a PPrism

    compose a POptional with a PPrism

    Annotations
    @inline()
  22. final def composeSetter[C, D](other: PSetter[A, B, C, D]): PSetter[S, T, C, D]

    compose a POptional with a PSetter

    compose a POptional with a PSetter

    Annotations
    @inline()
  23. final def composeTraversal[C, D](other: PTraversal[A, B, C, D]): PTraversal[S, T, C, D]

    compose a POptional with a PTraversal

    compose a POptional with a PTraversal

    Annotations
    @inline()
  24. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  25. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  26. final def exist(p: (A) ⇒ Boolean): (S) ⇒ Boolean

    check if there is a target and it satisfies the predicate

    check if there is a target and it satisfies the predicate

    Annotations
    @inline()
  27. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  28. final def find(p: (A) ⇒ Boolean): (S) ⇒ Option[A]

    find if the target satisfies the predicate

    find if the target satisfies the predicate

    Annotations
    @inline()
  29. final def first[C]: POptional[(S, C), (T, C), (A, C), (B, C)]
    Annotations
    @inline()
  30. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  31. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  32. final def isEmpty(s: S): Boolean

    check if there is no target

    check if there is no target

    Annotations
    @inline()
  33. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  34. final def modifyOption(f: (A) ⇒ B): (S) ⇒ Option[T]

    modify polymorphically the target of a POptional with a function.

    modify polymorphically the target of a POptional with a function. return empty if the POptional is not matching

    Annotations
    @inline()
  35. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  36. final def nonEmpty(s: S): Boolean

    check if there is a target

    check if there is a target

    Annotations
    @inline()
  37. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  38. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  39. final def second[C]: POptional[(C, S), (C, T), (C, A), (C, B)]
    Annotations
    @inline()
  40. final def setOption(b: B): (S) ⇒ Option[T]

    set polymorphically the target of a POptional with a value.

    set polymorphically the target of a POptional with a value. return empty if the POptional is not matching

    Annotations
    @inline()
  41. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  42. def toString(): String
    Definition Classes
    AnyRef → Any
  43. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  44. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  45. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped