public _(TakeLast <TSource> parent, IObserver <TSource> observer, IDisposable cancel)
: base(observer, cancel)
{
_parent = parent;
_queue = new Queue <TSource>();
}
public τ(TakeLast <TSource> parent, IObserver <TSource> observer, IDisposable cancel)
: base(observer, cancel)
{
_parent = parent;
_queue = new Queue <System.Reactive.TimeInterval <TSource> >();
}