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);
}
/// <summary> 2.1.4 </summary>
private static void TestNodeInt()
{
using (NodeInt n = new NodeInt(1, 2, 3, 4, 5))
{
Write("Collection:\t");
n.Iterate(WriteNum);
Write(Environment.NewLine);
Write("Filter (>2):\t");
n.Filter((v) => v > 2).Iterate(WriteNum);
Write(Environment.NewLine);
Write("Map (+1):\t");
n.Map((v) => v + 1).Iterate(WriteNum);
Write(Environment.NewLine);
}
}
