public _(SelectMany <TSource, TCollection, TResult> parent, IObserver <TResult> observer, IDisposable cancel)
: base(observer, cancel)
{
_parent = parent;
_indexInSource = -1;
}
public SelectManyImpl(SelectMany <TSource, TCollection, TResult> parent, IObserver <TResult> observer, IDisposable cancel)
: base(observer, cancel)
{
_parent = parent;
}