final class Opt[+A] extends AnyVal with Serializable

Like Option but implemented as value class (avoids boxing) and treats null as no value. Therefore, there is no equivalent for Some(null).

If you need a value-class version of Option which differentiates between no value and null value, use NOpt.

Linear Supertypes
Serializable, Serializable, AnyVal, Any
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Inherited
  1. Opt
  2. Serializable
  3. Serializable
  4. AnyVal
  5. Any
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Visibility
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Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    Any
  2. final def ##(): Int
    Definition Classes
    Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    Any
  4. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def boxed[B](implicit boxing: Boxing[A, B]): Opt[B]
    Annotations
    @inline()
  6. def boxedOrNull[B >: Null](implicit boxing: Boxing[A, B]): B
    Annotations
    @inline()
  7. def collect[B](pf: PartialFunction[A, B]): Opt[B]

    Analogous to Option.collect except that when the function returns null, empty Opt is returned as a result.

    Analogous to Option.collect except that when the function returns null, empty Opt is returned as a result.

    Annotations
    @inline()
  8. def contains[A1 >: A](elem: A1): Boolean
    Annotations
    @inline()
  9. def exists(p: (A) ⇒ Boolean): Boolean
    Annotations
    @inline()
  10. def filter(p: (A) ⇒ Boolean): Opt[A]
    Annotations
    @inline()
  11. def filterNot(p: (A) ⇒ Boolean): Opt[A]
    Annotations
    @inline()
  12. def flatMap[B](f: (A) ⇒ Opt[B]): Opt[B]
    Annotations
    @inline()
  13. def flatten[B](implicit ev: <:<[A, Opt[B]]): Opt[B]
    Annotations
    @inline()
  14. def fold[B](ifEmpty: ⇒ B)(f: (A) ⇒ B): B
    Annotations
    @inline()
  15. def forEmpty(sideEffect: ⇒ Unit): Opt[A]

    Apply side effect only if Opt is empty.

    Apply side effect only if Opt is empty. It's a bit like foreach for Opt.Empty

    sideEffect

    - code to be executed if opt is empty

    returns

    the same opt

    Annotations
    @inline()
    Example:
    1. captionOpt.forEmpty(logger.warn("caption is empty")).foreach(setCaption)
  16. def forall(p: (A) ⇒ Boolean): Boolean
    Annotations
    @inline()
  17. def foreach[U](f: (A) ⇒ U): Unit
    Annotations
    @inline()
  18. def get: A
    Annotations
    @inline()
  19. def getClass(): Class[_ <: AnyVal]
    Definition Classes
    AnyVal → Any
  20. def getOrElse[B >: A](default: ⇒ B): B
    Annotations
    @inline()
  21. def isDefined: Boolean
    Annotations
    @inline()
  22. def isEmpty: Boolean
    Annotations
    @inline()
  23. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  24. def iterator: Iterator[A]
    Annotations
    @inline()
  25. def map[B](f: (A) ⇒ B): Opt[B]

    Analogous to Option.map except that when mapping function returns null, empty Opt is returned as a result.

    Analogous to Option.map except that when mapping function returns null, empty Opt is returned as a result.

    Annotations
    @inline()
  26. def nonEmpty: Boolean
    Annotations
    @inline()
  27. def orElse[B >: A](alternative: ⇒ Opt[B]): Opt[B]
    Annotations
    @inline()
  28. def orNull[B >: A](implicit ev: <:<[Null, B]): B
    Annotations
    @inline()
  29. def toLeft[X](right: ⇒ X): Either[A, X]
    Annotations
    @inline()
  30. def toList: List[A]
    Annotations
    @inline()
  31. def toNOpt: NOpt[A]
    Annotations
    @inline()
  32. def toOptArg: OptArg[A]
    Annotations
    @inline()
  33. def toOptRef[B >: Null](implicit boxing: Boxing[A, B]): OptRef[B]
    Annotations
    @inline()
  34. def toOption: Option[A]
    Annotations
    @inline()
  35. def toRight[X](left: ⇒ X): Either[X, A]
    Annotations
    @inline()
  36. def toString(): String
    Definition Classes
    Opt → Any
  37. def unboxed[B](implicit unboxing: Unboxing[B, A]): Opt[B]
    Annotations
    @inline()
  38. def withFilter(p: (A) ⇒ Boolean): WithFilter[A]
    Annotations
    @inline()
  39. def zip[B](that: Opt[B]): Opt[(A, B)]
    Annotations
    @inline()

Inherited from Serializable

Inherited from Serializable

Inherited from AnyVal

Inherited from Any

Ungrouped