public object[] next(Table table, params object[] p)
{
object index = p.Length > 0 ? p[0] : Nil.Value;
index = table.NextKey(index);
object o = table[index];
if (o == Nil.Value) {
return new object[] { Nil.Value };
}
else if (o == null) throw new Exception("Key does not exist in the table");
else {
return new object[] {
index, o
};
}
}