public bool IsProperSupersetOf(IEnumerable <T> other)
{
if (other == null)
{
throw new ArgumentNullException(nameof(other));
}
if (Count == 0)
{
return(false);
}
if (this == other)
{
return(false);
}
if (other is ICollection collection && collection.Count == 0)
{
Debug.Assert(Count > 0, $"Assertion failed: {nameof(Count)} > 0");
return(true);
}
if (other is SortedTreeSet <T> sortedSet && Comparer.Equals(sortedSet.Comparer))
{
if (sortedSet.Count >= Count)
{
return(false);
}
foreach (T item in sortedSet)
{
if (!Contains(item))
{
return(false);
}
}
return(true);
}
(int uniqueCount, int unfoundCount) = SetHelper.CheckUniqueAndUnfoundElements(_sortedList, other, returnIfUnfound: true);
return(uniqueCount < Count && unfoundCount == 0);
}
public bool SetEquals(IEnumerable <T> other)
{
if (other == null)
{
throw new ArgumentNullException(nameof(other));
}
if (this == other)
{
return(true);
}
if (other is SortedTreeSet <T> sortedSet && Comparer.Equals(sortedSet.Comparer))
{
if (Count != sortedSet.Count)
{
return(false);
}
Enumerator x = GetEnumerator();
Enumerator y = sortedSet.GetEnumerator();
while (true)
{
bool hasX = x.MoveNext();
bool hasY = y.MoveNext();
Debug.Assert(hasX == hasY, $"Assertion failed: {nameof(hasX)} == {nameof(hasY)}");
if (!hasX)
{
return(true);
}
if (Comparer.Compare(x.Current, y.Current) != 0)
{
return(false);
}
}
}
(int uniqueCount, int unfoundCount) = SetHelper.CheckUniqueAndUnfoundElements(_sortedList, other, returnIfUnfound: true);
return(uniqueCount == Count && unfoundCount == 0);
}