ReceivePort abstract class

Together with SendPort, the only means of communication between isolates.

ReceivePorts have a sendPort getter which returns a SendPort. Any message that is sent through this SendPort is delivered to the ReceivePort it has been created from. There, the message is dispatched to the ReceivePort's listener.

A ReceivePort is a non-broadcast stream. This means that it buffers incoming messages until a listener is registered. Only one listener can receive messages. See Stream.asBroadcastStream for transforming the port to a broadcast stream.

A ReceivePort may have many SendPorts.

Implements

Stream

Constructors

ReceivePort() factory: Opens a long-lived port for receiving messages.
ReceivePort.fromRawReceivePort( RawReceivePort rawPort) factory: Creates a ReceivePort from a RawReceivePort.

Properties

sendPort → SendPort read-only: Returns a SendPort that sends to this receive port.
first → Future read-only, inherited: Returns the first element of the stream.
hashCode → int read-only, inherited: The hash code for this object.
isBroadcast → bool read-only, inherited: Whether this stream is a broadcast stream.
isEmpty → Future< bool> read-only, inherited: Reports whether this stream contains any elements.
last → Future read-only, inherited: Returns the last element of the stream.
length → Future< int> read-only, inherited: Counts the elements in the stream.
runtimeType → Type read-only, inherited: A representation of the runtime type of the object.
single → Future read-only, inherited: Returns the single element.

Operators

operator ==( other) → bool inherited: The equality operator.

Methods

close( ) → void: Closes this.
listen( void onData(message), { Function onError, void onDone(), bool cancelOnError }) → StreamSubscription: Inherited from Stream.
any( bool test(T element)) → Future< bool> inherited: Checks whether test accepts any element provided by this stream.
asBroadcastStream( {void onListen( StreamSubscription<T> subscription), void onCancel( StreamSubscription<T> subscription) }) → Stream inherited: Returns a multi-subscription stream that produces the same events as this.
asyncExpand<E>( Stream<E> convert(T event)) → Stream<E> inherited: Creates a new stream with the events of a stream per original event.
asyncMap<E>( dynamic convert(T event)) → Stream<E> inherited: Creates a new stream with each data event of this stream asynchronously mapped to a new event.
contains( Object needle) → Future< bool> inherited: Checks whether needle occurs in the elements provided by this stream.
distinct( [ bool equals(T previous, T next) ]) → Stream inherited: Skips data events if they are equal to the previous data event.
drain<E>( [E futureValue ]) → Future<E> inherited: Discards all data on the stream, but signals when it's done or an error occurred.
elementAt( int index) → Future inherited: Returns the value of the indexth data event of this stream.
every( bool test(T element)) → Future< bool> inherited: Checks whether test accepts all elements provided by this stream.
expand<S>( Iterable<S> convert(T value)) → Stream<S> inherited: Creates a new stream from this stream that converts each element into zero or more events.
firstWhere( bool test(T element), { Object defaultValue() }) → Future inherited: Finds the first element of this stream matching test.
fold<S>( S initialValue, S combine(S previous, T element)) → Future<S> inherited: Reduces a sequence of values by repeatedly applying combine.
forEach( void action(T element)) → Future inherited: Executes action on each data event of the stream.
handleError( Function onError, { bool test(error) }) → Stream inherited: Creates a wrapper Stream that intercepts some errors from this stream.
join( [ String separator = "" ]) → Future< String> inherited: Collects string of data events' string representations.
lastWhere( bool test(T element), { Object defaultValue() }) → Future inherited: Finds the last element in this stream matching test.
map<S>( S convert(T event)) → Stream<S> inherited: Creates a new stream that converts each element of this stream to a new value using the convert function.
noSuchMethod( Invocation invocation) → dynamic inherited: Invoked when a non-existent method or property is accessed.
pipe( StreamConsumer streamConsumer) → Future inherited: Pipe the events of this stream into streamConsumer.
reduce( dynamic combine(T previous, T element)) → Future inherited: Reduces a sequence of values by repeatedly applying combine.
singleWhere( bool test(T element)) → Future inherited: Finds the single element in this stream matching test.
skip( int count) → Stream inherited: Skips the first count data events from this stream.
skipWhile( bool test(T element)) → Stream inherited: Skip data events from this stream while they are matched by test.
take( int count) → Stream inherited: Provides at most the first count data events of this stream.
takeWhile( bool test(T element)) → Stream inherited: Forwards data events while test is successful.
timeout( Duration timeLimit, { void onTimeout( EventSink<T> sink) }) → Stream inherited: Creates a new stream with the same events as this stream.
toList( ) → Future< List> inherited: Collects the data of this stream in a List.
toSet( ) → Future< Set> inherited: Collects the data of this stream in a Set.
toString( ) → String inherited: Returns a string representation of this object.
transform<S>( StreamTransformer<dynamic, S> streamTransformer) → Stream<S> inherited: Chains this stream as the input of the provided StreamTransformer.
where( bool test(T event)) → Stream inherited: Creates a new stream from this stream that discards some data events.

© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/1.24.3/dart-isolate/ReceivePort-class.html

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Last Updated	2018-08-06T22:29:43Z