FlatMapStreamTransformer<T, S> class

Converts each emitted item into a new Stream using the given mapper function. The newly created Stream will be listened to and begin emitting items downstream.

The items emitted by each of the new Streams are emitted downstream in the same order they arrive. In other words, the sequences are merged together.


  new Stream.fromIterable([4, 3, 2, 1])
    .transform(new FlatMapStreamTransformer((i) =>
      new Stream.fromFuture(
        new Future.delayed(new Duration(minutes: i), () => i))
    .listen(print); // prints 1, 2, 3, 4


FlatMapStreamTransformer(Stream<S> mapper(T value))
Constructs a StreamTransformer which emits events from the source Stream using the given mapper. The mapped Stream will be listened to and begin emitting items downstream.


hashCode → int
The hash code for this object.
read-only, inherited
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited


bind(Stream<T> stream) → Stream<S>
Transforms the provided stream. [...]
cast<RS, RT>() → StreamTransformer<RS, RT>
Provides a StreamTransformer<RS, RT> view of this stream transformer.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
toString() → String
Returns a string representation of this object.


operator ==(dynamic other) → bool
The equality operator.