public _(MinBy <TSource, TKey> parent, IObserver <IList <TSource> > observer)
: base(observer)
{
_keySelector = parent._keySelector;
_comparer = parent._comparer;
_list = new List <TSource>();
}
public _(MinBy <TSource, TKey> parent, IObserver <IList <TSource> > observer, IDisposable cancel)
: base(observer, cancel)
{
_parent = parent;
_hasValue = false;
_lastKey = default(TKey);
_list = new List <TSource>();
}