CallbackOption

Callback that can short-circuit along the way when conditions you specify, aren't met.

Especially useful for event handlers such as key handlers, drag-and-drop handlers, etc, where you check a condition, perform an effect, check another condition, perform another effect, etc.

This is meant to be lightweight, and be immediately useful without the typical pain of imports, implicit conversions and extension methods then normally accompany monad transforms in Scala.

For a more generic (i.e. beyond Option) or comprehensive monad transformer use Scalaz or similar.

Linear Supertypes

AnyVal, Any

Instance Constructors

new CallbackOption(cbfn: () ⇒ Option[A])

Value Members

final def !=(arg0: Any): Boolean

Definition Classes
Any
final def ##(): Int

Definition Classes
Any
def &&[B](b: CallbackOption[B]): CallbackOption[Unit]
def *>[B](next: CallbackOption[B]): CallbackOption[B]

Alias for >>.
Alias for >>.
Where >> is often associated with Monads, *> is often associated with Applicatives.

Annotations
@inline()
def <*[B](next: CallbackOption[B]): CallbackOption[A]

Sequence actions, discarding the value of the second argument.
def <<[B](prev: CallbackOption[B]): CallbackOption[A]

Sequence a callback to run before this, discarding any value produced by it.
final def ==(arg0: Any): Boolean

Definition Classes
Any
def >>[B](next: CallbackOption[B]): CallbackOption[B]

Sequence a callback to run after this, discarding any value produced by this.
def >>=[B](f: (A) ⇒ CallbackOption[B]): CallbackOption[B]

Alias for flatMap.
Alias for flatMap.

Annotations
@inline()
final def asInstanceOf[T0]: T0

Definition Classes
Any
def filter(condition: (A) ⇒ Boolean): CallbackOption[A]
def flatMap[B](f: (A) ⇒ CallbackOption[B]): CallbackOption[B]
def flatMapOption[B](f: (A) ⇒ Option[B]): CallbackOption[B]
def get: CallbackTo[Option[A]]
def getClass(): Class[_ <: AnyVal]

Definition Classes
AnyVal → Any
def getOrElse(default: ⇒ A): CallbackTo[A]
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
def map[B](f: (A) ⇒ B): CallbackOption[B]
def orElse(tryNext: CallbackOption[A]): CallbackOption[A]
def toCallback(implicit ev: =:=[A, Unit]): Callback
def toCallbackB: CallbackB
def toString(): String

Definition Classes
Any
def unary_!(implicit ev: =:=[A, Unit]): CallbackOption[Unit]
def void: CallbackOption[Unit]

Discard the value produced by this callback.
def withFilter(condition: (A) ⇒ Boolean): CallbackOption[A]
def zip[B](cb: CallbackOption[B]): CallbackOption[(A, B)]
def |(tryNext: CallbackOption[A]): CallbackOption[A]

Alias for orElse.
Alias for orElse.

Annotations
@inline()
def |>[B](f: (A) ⇒ B): CallbackOption[B]

Alias for map.
Alias for map.

Annotations
@inline()
def ||[B](b: CallbackOption[B]): CallbackOption[Unit]

Related Docs: object CallbackOption | package react

final class CallbackOption[A] extends AnyVal

Instance Constructors

new CallbackOption(cbfn: () ⇒ Option[A])

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

def &&[B](b: CallbackOption[B]): CallbackOption[Unit]

def *>[B](next: CallbackOption[B]): CallbackOption[B]

def <*[B](next: CallbackOption[B]): CallbackOption[A]

def <<[B](prev: CallbackOption[B]): CallbackOption[A]

final def ==(arg0: Any): Boolean

def >>[B](next: CallbackOption[B]): CallbackOption[B]

def >>=[B](f: (A) ⇒ CallbackOption[B]): CallbackOption[B]

final def asInstanceOf[T0]: T0

def filter(condition: (A) ⇒ Boolean): CallbackOption[A]

def flatMap[B](f: (A) ⇒ CallbackOption[B]): CallbackOption[B]

def flatMapOption[B](f: (A) ⇒ Option[B]): CallbackOption[B]

def get: CallbackTo[Option[A]]

def getClass(): Class[_ <: AnyVal]

def getOrElse(default: ⇒ A): CallbackTo[A]

final def isInstanceOf[T0]: Boolean

def map[B](f: (A) ⇒ B): CallbackOption[B]

def orElse(tryNext: CallbackOption[A]): CallbackOption[A]

def toCallback(implicit ev: =:=[A, Unit]): Callback

def toCallbackB: CallbackB

def toString(): String

def unary_!(implicit ev: =:=[A, Unit]): CallbackOption[Unit]

def void: CallbackOption[Unit]

def withFilter(condition: (A) ⇒ Boolean): CallbackOption[A]

def zip[B](cb: CallbackOption[B]): CallbackOption[(A, B)]

def |(tryNext: CallbackOption[A]): CallbackOption[A]

def |>[B](f: (A) ⇒ B): CallbackOption[B]

def ||[B](b: CallbackOption[B]): CallbackOption[Unit]

Inherited from AnyVal

Inherited from Any

Ungrouped