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
Constructors
- ReceivePort()
-
Opens a long-lived port for receiving messages.
factory - ReceivePort.fromRawReceivePort(RawReceivePort rawPort)
-
Creates a ReceivePort from a RawReceivePort.
factory
Properties
- sendPort → SendPort
-
Returns a
SendPortthat sends to this receive port.read-only - first → Future
-
Returns the first element of the stream.
read-only, inherited - hashCode → int
-
The hash code for this object.
read-only, inherited - isBroadcast → bool
-
Whether this stream is a broadcast stream.
read-only, inherited - isEmpty → Future<bool>
-
Reports whether this stream contains any elements.
read-only, inherited - last → Future
-
Returns the last element of the stream.
read-only, inherited - length → Future<int>
-
Counts the elements in the stream.
read-only, inherited - runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited - single → Future
-
Returns the single element.
read-only, inherited
Operators
-
operator ==(
other) → bool -
The equality operator.
inherited
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> -
Checks whether
testaccepts any element provided by this stream.inherited -
asBroadcastStream(
{void onListen(StreamSubscription<T> subscription), void onCancel(StreamSubscription<T> subscription) }) → Stream -
Returns a multi-subscription stream that produces the same events as this.
inherited -
asyncExpand<E>(
Stream<E> convert(T event)) → Stream<E> -
Creates a new stream with the events of a stream per original event.
inherited -
asyncMap<E>(
dynamic convert(T event)) → Stream<E> -
Creates a new stream with each data event of this stream asynchronously mapped to a new event.
inherited -
contains(
Object needle) → Future<bool> -
Checks whether
needleoccurs in the elements provided by this stream.inherited -
distinct(
[bool equals(T previous, T next) ]) → Stream -
Skips data events if they are equal to the previous data event.
inherited -
drain<E>(
[E futureValue ]) → Future<E> -
Discards all data on the stream, but signals when it's done or an error occurred.
inherited -
elementAt(
int index) → Future -
Returns the value of the
indexth data event of this stream.inherited -
every(
bool test(T element)) → Future<bool> -
Checks whether
testaccepts all elements provided by this stream.inherited -
expand<S>(
Iterable<S> convert(T value)) → Stream<S> -
Creates a new stream from this stream that converts each element into zero or more events.
inherited -
firstWhere(
bool test(T element), { Object defaultValue() }) → Future -
Finds the first element of this stream matching
test.inherited -
fold<S>(
S initialValue, S combine(S previous, T element)) → Future<S> -
Reduces a sequence of values by repeatedly applying
combine.inherited -
forEach(
void action(T element)) → Future -
Executes
actionon each data event of the stream.inherited -
handleError(
Function onError, { bool test(error) }) → Stream -
Creates a wrapper Stream that intercepts some errors from this stream.
inherited -
join(
[String separator = "" ]) → Future<String> -
Collects string of data events' string representations.
inherited -
lastWhere(
bool test(T element), { Object defaultValue() }) → Future -
Finds the last element in this stream matching
test.inherited -
map<S>(
S convert(T event)) → Stream<S> -
Creates a new stream that converts each element of this stream to a new value using the
convertfunction.inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited -
pipe(
StreamConsumer streamConsumer) → Future -
Pipe the events of this stream into
streamConsumer.inherited -
reduce(
dynamic combine(T previous, T element)) → Future -
Reduces a sequence of values by repeatedly applying
combine.inherited -
singleWhere(
bool test(T element)) → Future -
Finds the single element in this stream matching
test.inherited -
skip(
int count) → Stream -
Skips the first
countdata events from this stream.inherited -
skipWhile(
bool test(T element)) → Stream -
Skip data events from this stream while they are matched by
test.inherited -
take(
int count) → Stream -
Provides at most the first
countdata events of this stream.inherited -
takeWhile(
bool test(T element)) → Stream -
Forwards data events while
testis successful.inherited -
timeout(
Duration timeLimit, { void onTimeout(EventSink<T> sink) }) → Stream -
Creates a new stream with the same events as this stream.
inherited -
toList(
) → Future<List> -
Collects the data of this stream in a List.
inherited -
toSet(
) → Future<Set> -
Collects the data of this stream in a Set.
inherited -
toString(
) → String -
Returns a string representation of this object.
inherited -
transform<S>(
StreamTransformer<dynamic, S> streamTransformer) → Stream<S> -
Chains this stream as the input of the provided StreamTransformer.
inherited -
where(
bool test(T event)) → Stream -
Creates a new stream from this stream that discards some data events.
inherited