mapTo<T> method
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
Implementation
Stream<T> mapTo<T>(T value) => MapToStreamTransformer<S, T>(value).bind(this);