StreamView<T> class
Stream wrapper that only exposes the Stream interface.
Constructors
- StreamView(Stream<
T> stream)const
Properties
- first → Future<
T> read-only, inherited - The first element of this stream. [...]
- hashCode → int read-only, inherited
- The hash code for this object. [...]
- isBroadcast → bool read-only, override
- Whether this stream is a broadcast stream.
- isEmpty → Future<
bool> read-only, inherited - Whether this stream contains any elements. [...]
- last → Future<
T> 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<
T> read-only, inherited - The single element of this stream. [...]
Methods
- any(
bool test(T element)) → Future< bool> inherited - Checks whether
testaccepts any element provided by this stream. [...] - asBroadcastStream(
{void onListen(StreamSubscription< T> subscription), void onCancel(StreamSubscription<T> subscription)}) → Stream<T> override - 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
needleoccurs in the elements provided by this stream. [...] - distinct(
[bool equals(T previous, T next)]) → Stream< T> 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< T> inherited - Returns the value of the
indexth data event of this stream. [...] - every(
bool test(T element)) → Future< bool> inherited - Checks whether
testaccepts 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), {T orElse()}) → Future< T> 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
actionon each element of this stream. [...] - handleError(
Function onError, {bool test(dynamic error)}) → Stream< T> 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), {T orElse()}) → Future< T> inherited - Finds the last element in this stream matching
test. [...] - listen(
void onData(T value), {Function? onError, void onDone(), bool? cancelOnError}) → StreamSubscription< T> override - Adds a subscription to this stream. [...]
- 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< T> streamConsumer) → Futureinherited - Pipes the events of this stream into
streamConsumer. [...] - reduce(
T combine(T previous, T element)) → Future< T> inherited - Combines a sequence of values by repeatedly applying
combine. [...] - singleWhere(
bool test(T element), {T orElse()}) → Future< T> inherited - Finds the single element in this stream matching
test. [...] - skip(
int count) → Stream< T> inherited - Skips the first
countdata events from this stream. [...] - skipWhile(
bool test(T element)) → Stream< T> inherited - Skip data events from this stream while they are matched by
test. [...] - take(
int count) → Stream< T> inherited - Provides at most the first
countdata events of this stream. [...] - takeWhile(
bool test(T element)) → Stream< T> inherited - Forwards data events while
testis successful. [...] - timeout(
Duration timeLimit, {void onTimeout(EventSink< T> sink)}) → Stream<T> inherited - Creates a new stream with the same events as this stream. [...]
- toList(
) → Future< List< T> >inherited - Collects all elements of this stream in a List. [...]
- toSet(
) → Future< Set< T> >inherited - Collects the data of this stream in a Set. [...]
- toString(
) → String inherited - A string representation of this object. [...]
- transform<
S> (StreamTransformer< T, S> streamTransformer) → Stream<S> inherited - Applies
streamTransformerto this stream. [...] - where(
bool test(T event)) → Stream< T> inherited - Creates a new stream from this stream that discards some elements. [...]
Operators
- operator ==(
Object other) → bool inherited - The equality operator. [...]
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dart.dev/stable/2.13.0/dart-async/StreamView-class.html