<PackageReference Include="System.Reactive" Version="5.0.0-preview.220" />
Scan<TSource, TAccumulate>
sealed class Scan<
TSource,
TAccumulate> :
Producer<
TAccumulate,
_<
TSource,
TAccumulate>>
public Scan(
IObservable<
TSource>
source,
TAccumulate seed,
Func<
TAccumulate,
TSource,
TAccumulate>
accumulator)