public GroupBy(GroupByObservable <TSource, TKey, TElement> parent, IObserver <IGroupedObservable <TKey, TElement> > observer, IDisposable cancel) : base(observer, cancel)
{
this.parent = parent;
if (parent.capacity != null)
{
this.map = new Dictionary <TKey, ISubject <TElement> >(parent.capacity.Value, parent.comparer);
}
else
{
this.map = new Dictionary <TKey, ISubject <TElement> >(parent.comparer);
}
}
