环境 类代码 public class Person:INotifyPropertyChanged { private string name; public string Name { get { return this.name; } set { this.name = value; notifyPropertyChanged("Name"); } } private int age; public int Age { get { return this.age; } set {
转:http://stackoverflow.com/questions/11382057/declaring-a-delegate-protocol There definitely are subtle differences. If the protocol you are talking about is a delegate that is used by one particular class, for example, MySpecialViewController, and M
一.写在前面 当你看着你的博客的阅读量慢慢增加的时候,内心不禁有了些小激动,但是不得不吐槽一下--博客园并不会显示你的博客的总阅读量是多少.而这一篇博客就将教你怎么利用队列这种结构来编写爬虫,最终获取你的博客的总阅读量. 二.必备知识 队列是常用数据结构之一,在Python3中要用queue这个模块来实现.queue这个模块实现了三种队列: class queue.Queue(maxsize=0):FIFO队列(first in first out),先进先出,第一个进入队列的元素会第一个从队列
