public void TestCombined2()
{
OrderedSet <Int32> First = OrderedSet.SortArrayAndGetSet(new Int32[] { 0, 1, 3 });
AssertEquals(new Int32[] { 0, 1, 3 }, First.orderedSet);
OrderedSet <Int32> Second = First.Combine(OrderedSet.SortArrayAndGetSet(new Int32[] { 0, 2 }));
AssertEquals(new Int32[] { 0, 1, 2, 3 }, Second.orderedSet);
}
// NOTE: this can probably be made more efficient
public static OrderedSet <T> Combine <T>(this IEnumerable <OrderedSet <T> > sets)
{
IEnumerator <OrderedSet <T> > enumerator = sets.GetEnumerator();
if (!enumerator.MoveNext())
{
return(default(OrderedSet <T>));
}
OrderedSet <T> combined = enumerator.Current;
while (enumerator.MoveNext())
{
combined = combined.Combine(enumerator.Current);
}
return(combined);
}