static 修饰符
声明类成员属于类,而不属于类的实例。
http://msdn.microsoft.com/zh-cn/library/98f28cdx.aspx
逆序迭代器
public class Stack1 : IEnumerable
{
string[] a = { "1", "2", "3" };
public IEnumerator GetEnumerator()
{
for (int i = 0; i < a.Length; i++)
{
yield return a[a.Length-1-i];
}
}
}
protected void Page_Load(object sender, EventArgs e)
{
Stack1 stack1 = new Stack1();
foreach (string b in stack1)
{
Response.Write(b);
}
}


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