public SetCollection union(object set)
{
SetStorage items;
if (SetStorage.GetItems(set, out items))
{
items = SetStorage.Union(_items, items);
}
else
{
items.UnionUpdate(_items);
}
return(Make(items));
}
public SetCollection union(FrozenSetCollection set)
{
return(Make(SetStorage.Union(_items, set._items)));
}
public SetCollection union([NotNull] SetCollection set)
{
return(Make(SetStorage.Union(_items, set._items)));
}
