sealed abstract case class Empty[A] extends Maybe[A] with Product with Serializable
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- Maybe.scala
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Value Members
- final def !=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def ##(): Int
- Definition Classes
- AnyRef → Any
- final def <\/[B](b: ⇒ B): \/[A, B]
alias for toLeft
- final def ==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def \/>[B](b: ⇒ B): \/[B, A]
alias for toRight
- final def asInstanceOf[T0]: T0
- Definition Classes
- Any
- final def cata[B](f: (A) ⇒ B, b: ⇒ B): B
Catamorphism.
Catamorphism. Run the given function on the underlying value if present, otherwise return the provided fallback value
- Definition Classes
- Maybe
- def clone(): AnyRef
- Attributes
- protected[java.lang]
- Definition Classes
- AnyRef
- Annotations
- @native() @throws(classOf[java.lang.CloneNotSupportedException])
- final def cobind[B](f: (Maybe[A]) ⇒ B): Maybe[B]
- Definition Classes
- Maybe
- final def cojoin: Maybe[Maybe[A]]
- Definition Classes
- Maybe
- final def eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- final def exists(f: (A) ⇒ Boolean): Boolean
Return
true
if this is a Maybe.Just and the underlying value satisfies the provided predicateReturn
true
if this is a Maybe.Just and the underlying value satisfies the provided predicate- Definition Classes
- Maybe
- final def filter(f: (A) ⇒ Boolean): Maybe[A]
- Definition Classes
- Maybe
- final def filterNot(f: (A) ⇒ Boolean): Maybe[A]
- Definition Classes
- Maybe
- def finalize(): Unit
- Attributes
- protected[java.lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.Throwable])
- final def first: FirstMaybe[A]
Tag with Tags.First
Tag with Tags.First
- Definition Classes
- Maybe
- final def flatMap[B](f: (A) ⇒ Maybe[B]): Maybe[B]
- Definition Classes
- Maybe
- final def forall(f: (A) ⇒ Boolean): Boolean
Return
true
if this is a Maybe.Empty or if this is a Maybe.Just and the underlying value satisfies the provided predicateReturn
true
if this is a Maybe.Empty or if this is a Maybe.Just and the underlying value satisfies the provided predicate- Definition Classes
- Maybe
- final def getClass(): Class[_]
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
- final def getOrElse(a: ⇒ A): A
Return the underlying value if present, otherwise the provided fallback value
Return the underlying value if present, otherwise the provided fallback value
- Definition Classes
- Maybe
- final def getOrElseF[F[_]](fa: ⇒ F[A])(implicit arg0: Applicative[F]): F[A]
- Definition Classes
- Maybe
- final def isEmpty: Boolean
True if no underlying value is present
True if no underlying value is present
- Definition Classes
- Maybe
- final def isInstanceOf[T0]: Boolean
- Definition Classes
- Any
- final def isJust: Boolean
True if an underlying value is present
True if an underlying value is present
- Definition Classes
- Maybe
- final def last: LastMaybe[A]
Tag with Tags.Last
- final def map[B](f: (A) ⇒ B): Maybe[B]
- Definition Classes
- Maybe
- final def max: MaxMaybe[A]
Tag with Tags.Max
- final def min: MinMaybe[A]
Tag with Tags.Min
- final def ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- final def notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
- final def notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
- final def orElse(oa: ⇒ Maybe[A]): Maybe[A]
Return this instance if it is a Maybe.Just, otherwise the provided fallback
Return this instance if it is a Maybe.Just, otherwise the provided fallback
- Definition Classes
- Maybe
- final def orEmpty[F[_]](implicit F: ApplicativePlus[F]): F[A]
Return the underlying value wrapped in type
F
if present, otherwise the empty value for typeF
Return the underlying value wrapped in type
F
if present, otherwise the empty value for typeF
- Definition Classes
- Maybe
- final def orError[F[_], E](e: E)(implicit F: MonadError[F, E]): F[A]
- Definition Classes
- Maybe
- final def orZero(implicit F: Monoid[A]): A
Return the underlying value if present, otherwise the monoid zero
Return the underlying value if present, otherwise the monoid zero
- Definition Classes
- Maybe
- final def synchronized[T0](arg0: ⇒ T0): T0
- Definition Classes
- AnyRef
- final def toFailure[B](b: ⇒ B): Validation[A, B]
Turn the underlying value into a failure validation if present, otherwise return a success validation with the provided fallback value
Turn the underlying value into a failure validation if present, otherwise return a success validation with the provided fallback value
- Definition Classes
- Maybe
- final def toLeft[B](b: ⇒ B): \/[A, B]
Turn the underlying value into a left disjunction if present, otherwise return a right disjunction with the provided fallback value
Turn the underlying value into a left disjunction if present, otherwise return a right disjunction with the provided fallback value
- Definition Classes
- Maybe
- final def toOption: Option[A]
Convert to a standard library
Option
Convert to a standard library
Option
- Definition Classes
- Maybe
- final def toRight[B](b: ⇒ B): \/[B, A]
Turn the underlying value into a right disjunction if present, otherwise return a left disjunction with the provided fallback value
Turn the underlying value into a right disjunction if present, otherwise return a left disjunction with the provided fallback value
- Definition Classes
- Maybe
- final def toSuccess[B](b: ⇒ B): Validation[B, A]
Turn the underlying value into a success validation if present, otherwise return a failure validation with the provided fallback value
Turn the underlying value into a success validation if present, otherwise return a failure validation with the provided fallback value
- Definition Classes
- Maybe
- final def unary_~(implicit z: Monoid[A]): A
alias for orZero
- final def wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @native() @throws(classOf[java.lang.InterruptedException])
- final def zip[B](fb: Maybe[B]): Maybe[(A, B)]
- Definition Classes
- Maybe
- final def zipWith[B, C](fb: Maybe[B])(f: (A, B) ⇒ C): Maybe[C]
- Definition Classes
- Maybe
- final def |(a: ⇒ A): A
alias for getOrElse