public override int Compare(T x, T y)
{
TKey xKey = _keySelector(x);
TKey yKey = _keySelector(y);
return(NullFilter.Filter(xKey, yKey) ?? Comparer.Compare(x, y));
}
public override int Compare(T x, T y)
{
return(NullFilter.Filter(x, y) ?? Comparer.Compare(x, y));
}