MapToStreamTransformer<S, T> class Null safety

Emits the given constant value on the output Stream every time the source Stream emits a value.

Example

Stream.fromIterable([1, 2, 3, 4])
  .mapTo(true)
  .listen(print); // prints true, true, true, true
Inheritance

Constructors

MapToStreamTransformer(T value)
Constructs a StreamTransformer which always maps every event from the source Stream to a constant value.

Properties

hashCode int
The hash code for this object.
read-onlyinherited
runtimeType Type
A representation of the runtime type of the object.
read-onlyinherited
value → T
A constant value which will always be returned when using this transformer.
final

Methods

bind(Stream<S> stream) Stream<T>
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 non-existent method or property is accessed.
inherited
toString() String
A string representation of this object.
inherited

Operators

operator ==(Object other) bool
The equality operator.
inherited