public SelectObserverWithIndex(Select <T, TR> parent, IObserver <TR> observer, IDisposable cancel)
: base(observer, cancel)
{
this.parent = parent;
this.index = 0;
}
public SelectObserver(Select <T, TR> parent, IObserver <TR> observer, IDisposable cancel)
: base(observer, cancel)
{
this.parent = parent;
}