public IOrderedEnumerable <TElement> CreateOrderedEnumerable <TKey>(
Func <TElement, TKey> keySelector,
IComparer <TKey> comparer, bool @descending)
{
var oe = new HeapOrderedEnumerable <TElement, TKey>(
_source, _numItems, keySelector, comparer, descending)
{
_parent = this
};
return(oe);
}
private IEnumerable <HeapOrderedEnumerable <TElement> > GetCriteria()
{
var keys = new Stack <HeapOrderedEnumerable <TElement> >();
HeapOrderedEnumerable <TElement> current = this;
while (current != null)
{
keys.Push(current);
current = current._parent;
}
return(keys);
}