MaterializeStreamTransformer<S> class

Converts the onData, on Done, and onError events into StreamNotification objects that are passed into the downstream onData listener.

The StreamNotification object contains the NotificationKind of event (OnData, onDone, or OnError), and the item or error that was emitted. In the case of onDone, no data is emitted as part of the StreamNotification.

Example

Stream<int>.fromIterable([1])
    .transform(MaterializeStreamTransformer())
    .listen(print); // Prints DataNotification{value: 1}, DoneNotification{}

Inheritance

• Object
• StreamTransformerBase<S, StreamNotification<S>>
• MaterializeStreamTransformer

Constructors

MaterializeStreamTransformer()

Constructs a StreamTransformer which transforms the onData, on Done, and onError events into StreamNotification objects.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

bind(Stream<S> stream) → Stream<StreamNotification<S>>

Transforms the provided stream.

override

cast<RS, RT>() → StreamTransformer<RS, RT>

Provides a StreamTransformer<RS, RT> view of this stream transformer.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited