core
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core/io.laminext/io.laminext.core/TeeObserver

TeeObserver

io.laminext.core.TeeObserver
class TeeObserver[T](observers: Seq[Observer[T]]) extends Observer[T]

Attributes

Graph
Supertypes
trait Observer[T]
trait Named
trait Sink[T]
class Object
trait Matchable
class Any
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Members list

Value members

Concrete methods

override def onError(err: Throwable): Unit

Note: must not throw!

Note: must not throw!

Attributes

Definition Classes
Observer
override def onNext(nextValue: T): Unit

Note: must not throw!

Note: must not throw!

Attributes

Definition Classes
Observer
override def onTry(nextValue: Try[T]): Unit

Note: must not throw!

Note: must not throw!

Attributes

Definition Classes
Observer

Inherited methods

def contracollect[B](pf: PartialFunction[B, T]): Observer[B]

Like contramap but with collect semantics: not calling the original observer when pf is not defined

Like contramap but with collect semantics: not calling the original observer when pf is not defined

Value parameters

pf

Note: guarded against exceptions

Attributes

Inherited from:
Observer
def contracollectOpt[B](project: B => Option[T]): Observer[B]

Like contramap, but original observer only fires if project returns Some(value)

Like contramap, but original observer only fires if project returns Some(value)

So, similar to contracollect but optimized for APIs like NonEmptyList.fromList that return an Option.

Value parameters

project

Note: guarded against exceptions

Attributes

Inherited from:
Observer
def contramap[B](project: B => T): Observer[B]

Creates another Observer such that calling its onNext will call this observer's onNext with the value processed by the project function.

Creates another Observer such that calling its onNext will call this observer's onNext with the value processed by the project function.

This is useful when you need to pass down an Observer[A] to a child component which should not know anything about the type A, but both child and parent know about type B, and the parent knows how to translate B into A.

Value parameters

project

Note: guarded against exceptions

Attributes

Inherited from:
Observer
def contramapSome[V](implicit evidence: Option[V] <:< T): Observer[V]

Available only on Observers of Option, this is a shortcut for contramapB

Available only on Observers of Option, this is a shortcut for contramapB

Attributes

Inherited from:
Observer
def contramapTry[B](project: Try[B] => Try[T]): Observer[B]

Value parameters

project

must not throw!

Attributes

Inherited from:
Observer
protected def defaultDisplayName: String

This is the method that subclasses override to preserve the user's ability to set custom display names.

This is the method that subclasses override to preserve the user's ability to set custom display names.

Attributes

Inherited from:
Named
def delay(ms: Int): Observer[A]

Creates another Observer such that calling it calls the original observer after the specified delay.

Creates another Observer such that calling it calls the original observer after the specified delay.

Note: unlike Observable operators, Observer operators are not ownership-aware, so this can fire the observer even after the subscription that bound this observer to the observable has been killed. So in Laminar for example, it's possible for such a delayed observer to fire even after the element that owns this subscription was unmounted. Use the Observable delay operator to avoid that.

Of course, whether anything happens if the observer is fired is a separate issue altogether. For example, if the observer is an EventBus writer, firing into it won't do anything if the EventBus stream is stopped.

Attributes

Inherited from:
Observer
final def displayName: String

Attributes

Inherited from:
Named
def filter[B <: T](passes: B => Boolean): Observer[B]

Creates another Observer such that calling its onNext will call this observer's onNext with the same value, but only if it passes the test.

Creates another Observer such that calling its onNext will call this observer's onNext with the same value, but only if it passes the test.

Value parameters

passes

Note: guarded against exceptions

Attributes

Inherited from:
Observer
def setDisplayName(name: String): Named.this.type

Set the display name for this instance (observable or observer).

Set the display name for this instance (observable or observer).

  • This method modifies the instance and returns this. It does not create a new instance.
  • New name you set will override the previous name, if any. This might change in the future. For the sake of sanity, don't call this more than once for the same instance.
  • If display name is set, toString will output it instead of the standard type@hashcode string

Attributes

Inherited from:
Named
override def toObserver: Observer[A]

Attributes

Definition Classes
Observer -> Sink
Inherited from:
Observer
final override def toString: String

Override defaultDisplayName instead of this, if you need to.

Override defaultDisplayName instead of this, if you need to.

Attributes

Definition Classes
Named -> Any
Inherited from:
Named

Inherited fields

lazy val toJsFn1: Function1[T, Unit]

Attributes

Inherited from:
Observer
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