dart:isolate
ReceivePort 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.
- Implemented types
-
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
- The first element of this 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
- Whether this stream contains any elements. [...]
- last → Future
read-only, inherited
- The last element of this stream. [...]
- length → Future<int>
read-only, inherited
- The number of elements in this stream. [...]
- runtimeType → Type
read-only, inherited
- A representation of the runtime type of the object.
- single → Future
read-only, inherited
- The single element of this stream. [...]
Methods
- close() → void
- Closes
this. [...] - listen(void onData(dynamic message), { Function onError, void onDone(), bool cancelOnError }) → StreamSubscription
override
- 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
- Transforms each element into a sequence of asynchronous events. [...]
- asyncMap<E>(FutureOr<E> convert(T event)) → Stream<E>
inherited
- Creates a new stream with each data event of this stream asynchronously mapped to a new event. [...]
- cast<R>() → Stream<R>
inherited
- Adapt this stream to be a
Stream<R>. [...] - contains(Object needle) → Future<bool>
inherited
- Returns 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 this stream, but signals when it is 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 element)) → Stream<S>
inherited
- Transforms each element of this stream into a sequence of elements. [...]
- firstWhere(bool test(T element), { dynamic orElse() }) → Future
inherited
- Finds the first element of this stream matching
test. [...] - fold<S>(S initialValue, S combine(S previous, T element)) → Future<S>
inherited
- Combines a sequence of values by repeatedly applying
combine. [...] - forEach(void action(T element)) → Future
inherited
- Executes
action on each element of this stream. [...] - handleError(Function onError, { bool test(dynamic error) }) → Stream
inherited
- Creates a wrapper Stream that intercepts some errors from this stream. [...]
- join([String separator = "" ]) → Future<String>
inherited
- Combines the string representation of elements into a single string. [...]
- lastWhere(bool test(T element), { dynamic orElse() }) → Future
inherited
- Finds the last element in this stream matching
test. [...] - map<S>(S convert(T event)) → Stream<S>
inherited
- Transforms each element of this stream into a new stream event. [...]
- noSuchMethod(Invocation invocation) → dynamic
inherited
- Invoked when a non-existent method or property is accessed. [...]
- pipe(StreamConsumer streamConsumer) → Future
inherited
- Pipes the events of this stream into
streamConsumer. [...] - reduce(dynamic combine(T previous, T element)) → Future
inherited
- Combines a sequence of values by repeatedly applying
combine. [...] - singleWhere(bool test(T element), { dynamic orElse() }) → 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 all elements 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
- Applies
streamTransformer to this stream. [...] - where(bool test(T event)) → Stream
inherited
- Creates a new stream from this stream that discards some elements. [...]
Operators
- operator ==(dynamic other) → bool
inherited
- The equality operator. [...]