private static IEnumerable <TSource> OrderByThenTakeImpl <TSource, TKey>(IEnumerable <TSource> source, int count, IHeap <TSource> heap)
{
foreach (var item in source)
{
heap.Add(item);
if (heap.Count > count)
{
// Remove minimum/maximum value
heap.Remove();
}
}
return(heap.ConsumeHeap().Reverse());
}