description

# StreamView<T> class Null safety

Stream wrapper that only exposes the Stream interface.

Inheritance
  - Object
  - Stream<T>
  - StreamView

## Constructors

StreamView(Stream<T> stream)
  const

## Properties

first → Future<T>
  The first element of this 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, override
isEmpty → Future<bool>
  Whether this stream contains any elements. [...]
  read-only, inherited
last → Future<T>
  The last element of this stream. [...]
  read-only, inherited
length → Future<int>
  The number of elements in this stream. [...]
  read-only, inherited
runtimeType → Type
  A representation of the runtime type of the object.
  read-only, inherited
single → Future<T>
  The single element of this stream. [...]
  read-only, inherited

## Methods

any(bool test(T element)) → Future<bool>
  Checks whether `test` accepts any element provided by this stream. [...]
  inherited
asBroadcastStream({void onListen(StreamSubscription<T> subscription), void onCancel(StreamSubscription<T> subscription)}) → Stream<T>
  Returns a multi-subscription stream that produces the same events as this. [...]
  override
asyncExpand<E>(Stream<E>? convert(T event)) → Stream<E>
  Transforms each element into a sequence of asynchronous events. [...]
  inherited
asyncMap<E>(FutureOr<E> convert(T event)) → Stream<E>
  Creates a new stream with each data event of this stream asynchronously mapped to a new event. [...]
  inherited
cast<R>() → Stream<R>
  Adapt this stream to be a `Stream<R>`. [...]
  inherited
contains(Object? needle) → Future<bool>
  Returns whether `needle` occurs in the elements provided by this stream. [...]
  inherited
distinct([bool equals(T previous, T next)]) → Stream<T>
  Skips data events if they are equal to the previous data event. [...]
  inherited
drain<E>([E? futureValue]) → Future<E>
  Discards all data on this stream, but signals when it is done or an error occurred. [...]
  inherited
elementAt(int index) → Future<T>
  Returns the value of the `index`th data event of this stream. [...]
  inherited
every(bool test(T element)) → Future<bool>
  Checks whether `test` accepts all elements provided by this stream. [...]
  inherited
expand<S>(Iterable<S> convert(T element)) → Stream<S>
  Transforms each element of this stream into a sequence of elements. [...]
  inherited
firstWhere(bool test(T element), {T orElse()}) → Future<T>
  Finds the first element of this stream matching `test`. [...]
  inherited
fold<S>(S initialValue, S combine(S previous, T element)) → Future<S>
  Combines a sequence of values by repeatedly applying `combine`. [...]
  inherited
forEach(void action(T element)) → Future
  Executes `action` on each element of this stream. [...]
  inherited
handleError(Function onError, {bool test(dynamic error)}) → Stream<T>
  Creates a wrapper Stream that intercepts some errors from this stream. [...]
  inherited
join([String separator = ""]) → Future<String>
  Combines the string representation of elements into a single string. [...]
  inherited
lastWhere(bool test(T element), {T orElse()}) → Future<T>
  Finds the last element in this stream matching `test`. [...]
  inherited
listen(void onData(T value), {Function? onError, void onDone(), bool? cancelOnError}) → StreamSubscription<T>
  Adds a subscription to this stream. [...]
  override
map<S>(S convert(T event)) → Stream<S>
  Transforms each element of this stream into a new stream event. [...]
  inherited
noSuchMethod(Invocation invocation) → dynamic
  Invoked when a non-existent method or property is accessed. [...]
  inherited
pipe(StreamConsumer<T> streamConsumer) → Future
  Pipes the events of this stream into `streamConsumer`. [...]
  inherited
reduce(T combine(T previous, T element)) → Future<T>
  Combines a sequence of values by repeatedly applying `combine`. [...]
  inherited
singleWhere(bool test(T element), {T orElse()}) → Future<T>
  Finds the single element in this stream matching `test`. [...]
  inherited
skip(int count) → Stream<T>
  Skips the first `count` data events from this stream. [...]
  inherited
skipWhile(bool test(T element)) → Stream<T>
  Skip data events from this stream while they are matched by `test`. [...]
  inherited
take(int count) → Stream<T>
  Provides at most the first `count` data events of this stream. [...]
  inherited
takeWhile(bool test(T element)) → Stream<T>
  Forwards data events while `test` is successful. [...]
  inherited
timeout(Duration timeLimit, {void onTimeout(EventSink<T> sink)}) → Stream<T>
  Creates a new stream with the same events as this stream. [...]
  inherited
toList() → Future<List<T>>
  Collects all elements of this stream in a List. [...]
  inherited
toSet() → Future<Set<T>>
  Collects the data of this stream in a Set. [...]
  inherited
toString() → String
  Returns a string representation of this object.
  inherited
transform<S>(StreamTransformer<T, S> streamTransformer) → Stream<S>
  Applies `streamTransformer` to this stream. [...]
  inherited
where(bool test(T event)) → Stream<T>
  Creates a new stream from this stream that discards some elements. [...]
  inherited

## Operators

operator ==(Object other) → bool
  The equality operator. [...]
  inherited