public NodeInt Map(Func <int, int> func)
{
NodeInt result = new NodeInt();
Iterate((v) => result.Add(func(v)));
return(result);
}
public ListInt Filter(Func <int, bool> func)
{
NodeInt result = new NodeInt();
Iterate((v) => { if (func(v))
{
result.Add(v);
}
});
return(result.IsEmpty ? (ListInt) new EmptyInt() : result);
}