static void Main(string[] args)
{
ConcreteList a = new ConcreteList();
a[0] = "Item A";
a[1] = "Item B";
a[2] = "Item C";
a[3] = "Item D";
// Create Iterator and provide List
BackwardIterator back = new BackwardIterator(a);
object item = null;
Console.WriteLine("Iterating over collection: with backward iterator");
item = back.First();
while (item != null)
{
Console.WriteLine(item);
item = back.Next();
}
Console.WriteLine("");
// Create Iterator and provide List
ForwardIterator forward = new ForwardIterator(a);
Console.WriteLine("Iterating over collection: with forward iterator");
item = forward.First();
while (item != null)
{
Console.WriteLine(item);
item = forward.Next();
}
// Wait for user
Console.Read();
}
private void PatternStart()
{
Iterator iterator;
List <int> _list = new List <int> ();
_list.Add(2);
_list.Add(3);
_list.Add(5);
IListCollection list = new ConcreteList(_list);
iterator = list.GetIterator();
while (iterator.MoveNext())
{
int i = (int)iterator.GetCurrent();
Log.Print(i.ToString());
iterator.Next();
}
}
// Constructor
public BackwardIterator(ConcreteList aggregate)
{
this.aggregate = aggregate;
this.current = aggregate.Count - 1;
}
// Constructor
public ForwardIterator(ConcreteList aggregate)
{
this.aggregate = aggregate;
}
public ConcreteIterator(ConcreteList list)
{
_list = list;
_index = 0;
}
