/// <summary>
///
/// </summary>
/// <param name="args"></param>
static void Main(string[] args)
{
#region 迭代器调用
Iterator iterator;
IListCollection list = new ConcreteList();
iterator = list.GetIterTerator();
while (iterator.MoveNext())
{
int i = (int)iterator.GetCurrent();
Console.WriteLine($"迭代到的数值：{i.ToString()}");
iterator.Next();
}
Console.Read();
#endregion
#region 题外话-测试下 yield return；
foreach (var item in GetNumbers())
{
Console.WriteLine("Main process. item = " + item);
}
#endregion
}
public ConcreteIterator(ConcreteList list)
{
_list = list;
_index = 0;
}