//Ensure that OrderBy returns the right type.
//There are other variants of OrderBy extension methods you'll have to short-circuit
public MyOrderedEnumerable <T> OrderBy <TKey>(Func <T, TKey> keySelector)
{
Console.WriteLine("Ordering");
var newSorted = new MyOrderedEnumerable <T>(Original);
newSorted.Sorted = (Sorted != null ? Sorted : Original).OrderBy(keySelector);
return(newSorted);
}
public IOrderedEnumerable <T> CreateOrderedEnumerable <TKey>(
Func <T, TKey> keySelector,
IComparer <TKey> comparer,
bool descending)
{
var newSorted = new MyOrderedEnumerable <T>(Original);
newSorted.ApplyOrder(keySelector, comparer, descending);
return(newSorted);
}
public static void Test()
{
var nums = new MyOrderedEnumerable <int>(Enumerable.Range(0, 10).ToList());
var nums2 = nums.OrderBy(x => - x);
var z = nums.Count() + nums2.Count();
}
