public static void Transfer()
{
//使用方法给上述委托赋值，并运行该委托
Person person1 = new Person();
ProvideWater provideWater1 = new ProvideWater(UseDelegate);
Console.WriteLine("used method");
Console.WriteLine(provideWater1(person1));
//使用匿名方法给上述委托赋值，并运行该委托
ProvideWater provideWater2 = delegate(Person person)
{
return(2);
};
Console.WriteLine("used anonymous method");
Console.WriteLine(provideWater2(person1));
//使用lambda表达式给上述委托赋值，并运行该委托
ProvideWater provideWater3 = p => 3;
Console.WriteLine("used lambda");
Console.WriteLine(provideWater3(person1));
//将ProvideWater的返回值输出
ProvideWater provideWater4 = new ProvideWater(UseDelegate);
Console.WriteLine("used GetWater() get a value");
Console.WriteLine(GetWater(provideWater4));
}
public static void assginWay()
{
//使用方法给委托赋值
Person person1 = new Person();
ProvideWater provideWater1 = new ProvideWater(assignDelegate);
Console.WriteLine(provideWater1(person1));
//使用匿名方法给委托赋值
ProvideWater provideWater2 = delegate(Person person)
{
return(2);
};
Console.WriteLine(provideWater2(person1));
//使用lambda表达式给上述委托赋值，并运行该委托
ProvideWater provideWater3 = p => 3;
Console.WriteLine(provideWater3(person1));
//将ProvideWater的返回值输出
ProvideWater provideWater4 = p => 4;
Console.WriteLine(GetWater(provideWater4));
}
//声明一个方法GetWater()，该方法接受ProvideWater作为参数，并能将ProvideWater的返回值输出
public static int GetWater(ProvideWater provideWater)
{
Person person = new Person();
//provideWater = new ProvideWater(UseDelegate);
return(provideWater(person));
}
public static void ExecuteWeituo()
{
//方法给委托赋值
ProvideWater provideWater = new ProvideWater(BigFriend);
Console.WriteLine(Person.GetWater(provideWater));
ProvideWater provideWater1 = new ProvideWater(SmallFriend);
Console.WriteLine(Person.GetWater(provideWater1));
//匿名方法
ProvideWater provideWater3 = delegate(Person person)
{
Console.WriteLine("匿名方法");
return(person.waternumber += 5);
};
Console.WriteLine(Person.GetWater(provideWater3));
//lambda表达式
ProvideWater provideWater4 = (Person person) =>
{
Console.WriteLine("lambda表达式方法");
return(person.waternumber += 6);
};
Console.WriteLine(Person.GetWater(provideWater4));
}
static void Main(string[] args)
{
ProvideWater provideWater = new ProvideWater(BigFriend);
Console.WriteLine(Person.GetWater(provideWater));
ProvideWater provideWater1 = new ProvideWater(SmallFriend);
Console.WriteLine(Person.GetWater(provideWater1));
}
public static void InvokeDelegate()
{
ProvideWater provide = new ProvideWater(SetValue); //方法个委托赋值
provide += delegate(Person person) //匿名方法赋值
{
return(-1);
};
provide += person => - 1; //Lambda赋值
provide(new Person());
}
public static void Do()
{
//使用：
//1.方法
Person man = new Person();
ProvideWater provide = new ProvideWater(UseDelegate);
Console.WriteLine(provide(man));
//2.匿名方法
provide = delegate(Person person)
{
return(2);
};
Console.WriteLine(provide(man));
//3.lambda表达式
provide = p => 3;
Console.WriteLine(provide(man));
//声明一个方法GetWater()，该方法接受ProvideWater作为参数，并能将ProvideWater的返回值输出
GetWater(provide);
}
static void Main(string[] args)
{
User user = new User();
Article art = new Article();
art.Publish();
Console.WriteLine(DateTime.Now.ToString());
DLinkNode dLinkNode1 = new DLinkNode();
DLinkNode dLinkNode2 = new DLinkNode();
DLinkNode dLinkNode3 = new DLinkNode();
DLinkNode dLinkNode4 = new DLinkNode();
dLinkNode1.AddAfter(dLinkNode2);
dLinkNode2.AddAfter(dLinkNode3);
dLinkNode3.AddAfter(dLinkNode4);
foreach (DLinkNode item in dLinkNode1)
{
Console.WriteLine(item);
}
//方法给委托赋值
ProvideWater provideWater = new ProvideWater(AssignToDlg);
//匿名方法给委托赋值
ProvideWater provideWater2 = delegate(Person person)
{
return(person.weight--);
};
// lambda表达式给委托赋值
ProvideWater provideWater3 = p => p.weight--;
Console.WriteLine(GetWater(provideWater3));
///////////////////////////////////////////////////////////////////////
///构建文章，评论，评价，关键字的关系。
User lzb = new User {
Name = "李智博", Password = "******"
};
User xy = new User {
Name = "小鱼", Password = "******"
};
User fg = new User {
Name = "飞哥", Password = "******"
};
IList <User> users = new List <User> {
lzb, xy, fg
};
Comment comment1 = new Comment {
main = "你写的真不错"
};
Comment comment2 = new Comment {
main = "你的文笔真不错"
};
Comment comment3 = new Comment {
main = "写的不是很好，不符合我的价值观"
};
Comment comment4 = new Comment {
main = "写的不错，给你100分"
};
Comment comment5 = new Comment {
main = "你是我见过写的最差的"
};
Comment comment6 = new Comment {
main = "写的不是很符合我的逻辑，感觉很凌乱，继续加油哦"
};
IList <Comment> Comments = new List <Comment> {
comment1, comment2, comment3, comment4, comment5, comment6
};
Keyword <Article> java = new Keyword <Article> {
Word = "java的应用"
};
Keyword <Article> c = new Keyword <Article> {
Word = "c应用"
};
Keyword <Article> css = new Keyword <Article> {
Word = "css的应用"
};
Keyword <Article> jquery = new Keyword <Article> {
Word = "jquery的应用"
};
Keyword <Article> it = new Keyword <Article> {
Word = "编程语言"
};
Keyword <Article> csharp = new Keyword <Article> {
Word = "编程语言之csharp"
};
Keyword <Article> net = new Keyword <Article> {
Word = "编程世界之-.net"
};
IList <Keyword <Article> > keywords = new List <Keyword <Article> > {
java, c, css, jquery, it
};
Article Article1 = new Article()
{
Title = "it学习入门",
Main = "it入门需要做些什么准备呢，咱们。。。",
Author = fg,
PublishTime = new DateTime(2020, 10, 1),
keywords = new List <Keyword <Article> > {
it, csharp
},
Comment = new List <Comment> {
comment3
}
};
Article Article2 = new Article
{
Title = "高效的学习效率",
Main = "怎样提高我们的学习效率呢。。。",
Author = fg,
PublishTime = new DateTime(2019, 10, 1),
keywords = new List <Keyword <Article> >()
{
it, java, c
},
Comment = new List <Comment> {
comment4
}
};
Article Article3 = new Article
{
Title = "怎样选择编程语言",
Main = "编程语言需要结合。。。。",
Author = fg,
PublishTime = new DateTime(2019, 6, 1),
keywords = new List <Keyword <Article> >()
{
it, css
},
Comment = new List <Comment>()
{
comment5
}
};
Article article4 = new Article
{
Title = "编程语言的魅力",
Author = xy,
keywords = new List <Keyword <Article> >()
{
it, css, jquery
},
Comment = new List <Comment>()
{
comment1, comment2
},
PublishTime = new DateTime(2020, 11, 1)
};
List <Article> Articles = new List <Article> {
Article1, Article2, Article3, article4
};
Problem problem1 = new Problem
{
Author = lzb,
Reward = 13,
PublishTime = new DateTime(2020, 1, 20),
Main = "求助大佬关于c#委托方面的知识",
Title = "c#方面的求助",
comments = new List <Comment> {
comment6
},
};
IList <Problem> problems = new List <Problem> {
problem1
};
//文章文章添加评价
Appraise appraise1 = new Appraise {
Voter = lzb
};
appraise1.Agree();
Article1.appraises.Add(appraise1);
Appraise appraise2 = new Appraise {
Voter = xy
};
appraise2.Disagree();
Article1.appraises.Add(appraise2);
//一个关键字也可以对应多个文章
it.Articles = new List <Article> {
Article1, Article2, Article3
};
//文章可以有多个评论
Article1.Comment = new List <Comment> {
comment1, comment2
};
//每个评论必须有一个对应的文章
comment3.Article = Article1;
////每篇文章都对应着它的作者
Article1.Author = fg;
Article2.Author = fg;
Article3.Author = fg;
article4.Author = xy;
//ContentService kk = new ContentService();
//Article news = new Article();
//kk.Publish(news);
//Console.WriteLine(news.PublishTime);
//在之前“文章 / 评价 / 评论 / 用户 / 关键字”对象模型的基础上，添加相应的数据，然后完成以下操作：
//用linq方法改写以前的表达式
//找出“飞哥”发布的文章
var Find_dfg = Articles.Where(a => a.Author == fg);
//找出2019年1月1日以后“小鱼”发布的文章
var Find_xy = Articles.Where(a => a.Author == xy && a.PublishTime > new DateTime(2019, 1, 1));
//按发布时间升序 / 降序排列显示文章
var Ascd = Articles.OrderBy(a => a.PublishTime);
var Desc = Articles.OrderByDescending(a => a.PublishTime);
//统计每个用户各发布了多少篇文章
var Fg_article = Articles.Where(a => a.Author == fg).GroupBy(a => a.Author);
var Xy_article = Articles.Where(a => a.Author == xy).GroupBy(a => a.Author);
//找出包含关键字“C#”或“NET”的文章
var Csharp_kw = Articles.Where(a => a.keywords.Any(k => k.Word == "c#"));
var Net_kw = Articles.Where(a => a.keywords.Any(k => k.Word == ".NET"));
//找出评论数量最多的文章
var Article_Comment_Max = Articles.OrderByDescending(a => a.Comment.Count()).First();
//找出每个作者评论数最多的文章
var Fg_Comment_Max = Articles.Where(a => a.Author == fg).OrderByDescending(a => a.Comment.Count()).First();
var Xy_Comment_Max = Articles.Where(a => a.Author == xy).OrderByDescending(a => a.Comment.Count()).First();
//找出每个作者最近发布的文章
var Fg_Article_Rec = Articles.Where(a => a.Author == fg).OrderByDescending(a => a.PublishTime).First();
var Xy_Article_Rce = Articles.Where(a => a.Author == xy).OrderByDescending(a => a.PublishTime).First();
//找出每一篇求助的悬赏都大于5个帮帮币的求助作者
var resualt = problems.Where(p => p.Reward > 5).GroupBy(p => p.Author);
//Console.WriteLine(HomeWork<int>.BinarySeek(new System.Collections.Generic.List<int> { 1, 5, 76, 8, 9, 0, 43, 6, 3, 5 }, 0));
///字符串
//Console.WriteLine(mimicJoin("-", new string[] {"众所周知", "飞哥", "的", "颜值","是","一百分" }));
//Console.WriteLine(GetCount("13212*212-212", "212"));
//Console.WriteLine(GetCount("111234512", "12"));
//封装一个方法，可以修改Content的CreateTime和PublishTime
//DateTime lw = new DateTime(2023, 3, 4);
//Content article = new Content("文章");
//article.GetType()
// .GetProperty("CreateTime", BindingFlags.NonPublic | BindingFlags.Instance).SetValue(article, lw);
//Console.WriteLine();
//Console.WriteLine(Program.findPrimeNum(1, 10));
//TokenManager tokenManager = new TokenManager();
//User user = new User("lls", "1234");
//Console.WriteLine(user.ToString());
//Console.WriteLine(user);
//Article js = new Article
//{
// title = "title1",
// Author = new User("lzb", "333")
//};
//User lls = new User("lls", "123");
//js.AgreedBy(lls);
//new Article().AgreedBy(new User("lls", "1234"));
//ISendMessage lzb = new User("lzb","123");///调用显示接口
//User lls = new User("lls", "333");
//lzb.Send(lls);
//Console.WriteLine(time.GetDate(new DateTime(2020,2,27), 3));
//Console.WriteLine(time.GetDate(new DateTime(2020,2,27), 1));
//Console.WriteLine(time.GetDate(new DateTime(2020,12,30), 1));
//Console.WriteLine(time.GetDate(new DateTime(2020,1,1), 1));
//Console.WriteLine(time.GetDateofmondy(2021));
//Console.WriteLine(time.GetDateofmondy(2022));
//Console.WriteLine(time.GetDateofmondy(2023));
//Console.WriteLine(time.GetDateofmondy(2024));
//time.GetWeeks(new DateTime(2020, 1, 6));
//TokenManager lzb = new TokenManager();
//lzb._token = lzb._token | Token.Admin;///存入权限身份
//lzb._token = lzb._token ^ Token.Blogger;//剥夺权限身份
//Console.WriteLine((lzb._token & Token.Newbie) == Token.Newbie);//查看是否存在这个权限
//用代码证明struct定义的类型是值类型
//bed dream = new bed();
//dream = null;///值类型不能赋值为null
//User lzb = new User("lzb","123");
//lzb = null;///同样的由class定义的引用类型就可以赋值为null
//Suggest lzb = new Suggest();
//Console.WriteLine(lzb._kind);
//Article lz = new Article();
//Console.WriteLine(lz._kind);
// FactoryContext lzb = new FactoryContext();
//FactoryContext a = FactoryContext.foo();
//FactoryContext b = FactoryContext.foo();
//MimicStack.MimicStack.Push(123);
//MimicStack.MimicStack.Push(124);
//MimicStack.MimicStack.Push(123);
/* FactoryContext a = new FactoryContext();*////构造函数设为私有后，新new的时候就会报错
//problem lzb = new problem();
//lzb[1] = "123";
//lzb[2] = "456";
//lzb[3] = "789";
//lzb[0] = "22";
//Console.WriteLine(lzb[2]);
//problem lzb = new problem("lzb");
//problem lw = new problem("");
//User zdh = new User("空", "ki");
//Console.WriteLine(zdh.Name);
//Console.WriteLine(zdh.Password);
///调用函数
///
//string output;
//LZBC.user.Register("1234", "2345", "3456", "4567", "6789",out output);
//if (LZBC.user.Register("1234", "2345", "3456", "4567", "6789", out output))
//{
// Console.WriteLine(output);
//}
//else
//{
// Console.WriteLine(output);
//}
// string num;
// if (logOn("12", "13", "14", out num)
//)
// {
// Console.WriteLine(num);
// }
// else
// {
// Console.WriteLine(num);
// }
//Console.WriteLine(BinarySeek(new int[] { 1, 3, 5, 6, 8, 12, 24 }, 0, 7, 12));
//Console.WriteLine(BinarySeek2(new int[] { 1, 3, 5, 6, 8, 12, 24, 34,75 },75 ));
//GetArray(12, 12, 12);
//GuessMe();
//Console.WriteLine(GetAverage(new double[] { 23.45, 12.3, 34.5 }));
//findPrimeNum(10,30);//找质数
/// Console.WriteLine(getMax(new double[] { 23.1, 44, 32, 13 }));
//getMax(new double[] { 23.1, 44, 32, 13 });
//twoDimensional();//数组下标
//GetAverage(1200, 43);//平均成绩
//Console.WriteLine(GetAverage(1200, 43));
// Console.WriteLine(logOn("123", "234", "345"));//登录
//GuessMe(12);//猜数字
/// //getSum(1, 2);
//Console.WriteLine(getSum(1, 2));
//getProduct(2, 3);
//Console.WriteLine(getProduct(2, 3));
//differencing(23, 21);
//Console.WriteLine(differencing(23, 21));
//QUOTIENT(4, 3);
//Console.WriteLine(QUOTIENT(6,2.4));
}
// 声明一个方法GetWater()，该方法接受ProvideWater作为参数，
//并能将ProvideWater的返回值输出
public static int GetWater(ProvideWater Provider)
{
Person person = new Person();
return(Provider(person));
}
public int GetWater(ProvideWater provide) //GetWater()方法
{
Person person = new Person();
return(provide(person));
}
static void Main(string[] args)
{
#region ADO.NET HomeWork
// 作业：
//构建一个DBHelper，可以提供：
// 封装过后的ExecuteNonQuery() / ExecuteScalar() / ExecuteReader()方法
// 由外部控制开闭（Open() / Close()）的长连接（LongConnection）
// ExecuteNonQuery()使用长连接的重载
//使用上述DBHelper，完成以下操作：
// 将用户名和密码存入数据库：Register()
// 根据用户名和密码检查某用户能够成功登陆：Logon()
// 如果用户成功登陆，将其最后登录时间（LatestLogonTime）改成当前时间
// 批量标记若干Id的Message为已读：MarkHasRead(int[] messageIds)
// 查找出最近登录的若干个同学：IList<User> GetLatestLogon(int amount)
// 用事务完成帮帮币转移方法：void Sell(User buyer, int amount)，当前用户的帮帮币减少amount枚，买家（buyer）的帮帮币增加amount枚
#endregion
string connectionString = @"Data Source=-20191126PKLSWP;Initial Catalog=17bang;Integrated Security=True;";
using (DbConnection connection = new SqlConnection(connectionString))
{
connection.Open();
}
#region 双链foreach和max作业
DoubleLinkNode node1 = new DoubleLinkNode {
value = 1
};
DoubleLinkNode node2 = new DoubleLinkNode {
value = 2
};
DoubleLinkNode node3 = new DoubleLinkNode {
value = 3
};
DoubleLinkNode node4 = new DoubleLinkNode {
value = 4
};
DoubleLinkNode node5 = new DoubleLinkNode {
value = 5
};
node2.InsertAfter(node1);
node3.InsertAfter(node2);
node5.InsertAfter(node3);
foreach (var item in node1)
{
Console.WriteLine(((DoubleLinkNode)item).value);
}
//DoubleLink Max
DoubleLinkNode.Max(node1);
#endregion
#region 2020.4.14 5.在Main()函数调用ContentService时，捕获一切异常，并记录异常的消息和堆栈信息
User wpz = new User("wpzwpz", "1231231");
Problem problem = new Problem()
{
Reward = 2
};
Content content = new Content("王月半子")
{
Reward = problem, Author = wpz
};
try
{
ContentService contentService = new ContentService();
//我的理解，这个方法调用里已经有了各种抛异常的机制，
//那我这里就不用在写Throw了，如果有意外的异常catch就可以用了
contentService.Publish(content);
}
catch (Exception Record)
{
string path = @"C:\Users\Administrator\source\repos\luckstack3\Captcha\ForContentService.txt";
using (StreamWriter writer = File.AppendText(path))
{
DateTime date = DateTime.Now;//设置日志时间
string time = date.ToString("yyyy-mm-dd HH:mm:ss");
//日志存放
//writer = File.AppendText(path);
writer.WriteLine("异常时间" + time);
writer.WriteLine("异常对象" + Record.Source);
writer.WriteLine("调用堆栈" + Record.StackTrace.Trim());
writer.WriteLine("调用堆栈" + Record.ToString());
writer.Flush();
}
throw;
}
#endregion
#region Generic Method Homework Area
//1.声明一个委托：打水（ProvideWater），可以接受一个Person类的参数，返回值为int类型 【已完成】
ProvideWater getWater = TakeWater;
Person water = new Person();
//2-1.方法 【已完成】
getWater(water);
//2-2.匿名方法 【已完成】
ProvideOtherWater(water);
//2-3.lambda表达式
ProvideLambdaWater(water);
//3.声明一个方法GetWater()，该方法接受ProvideWater作为参数，并能将ProvideWater的返回值输出
GetWater(getWater);
#endregion
#region http://17bang.ren/Article/537 C#进阶：Linq方法 找出每个作者最近发布的一篇文章
//找出每个作者最近发布的一篇文章
LinqMethod.find_AuthorRecentlyArticle();
//为求助（Problem）添加悬赏（Reward）属性，并找出每一篇求助的悬赏都大于5个帮帮币的文章作者
LinqMethod.SearchReward();
#endregion
#region C# http://17bang.ren/Article/520 C#进阶：Linq-1：where/order/group/select
LinqMethod.Find_DFG_Article();
LinqMethod.Find_YU_Article();
LinqMethod.AscendingAndDescendingArticle();
LinqMethod.CountArticle();
LinqMethod.FindSpecefiedKeyWord();
LinqMethod.MaxCommentsOfArticle();
LinqMethod.MaxCommentsOfAuthor();
#endregion
#region 面向对象和C#基础作业（old）
#region 值的值传递和引用 之前作业完结
//int a = 18;
//HomeWork person = new HomeWork();//值的值传递
//person.ValuePass(a);
//Console.WriteLine(a);
//Console.WriteLine("------------------------");
//HomeWork otherPerson = new HomeWork();//值的引用传递
//otherPerson.ReferencePass(ref a);
//Console.WriteLine(a);
//Console.WriteLine("--------------------------");
//HomeWork name = new HomeWork { _name = "王月半子" };//引用类型的值传递
//ChangeName(name);
//Console.WriteLine(name._name);
//Console.WriteLine("--------------------------");
//HomeWork newName = new HomeWork { _name = "王月半子" };//引用类型的引用传递
//ChangeingName(ref newName);
//Console.WriteLine(newName._name);
#endregion
#region 第一天作业 观察“一起帮”的： 功能作业https://zhuanlan.zhihu.com/p/92362781
//User of class method.
//Entity.User User = new Entity.User();
//User.Register();
//User.Login();
////problem of class method ( inside null)
//Entity.Problem Problem = new Entity.Problem();
//Problem.Publish();
////HeloMoney of call method (inside null)
//Entity.HelpMoney Helomoney = new Entity.HelpMoney();
//Helomoney.BodyShow();
#endregion
#region Secend Day Homework. https://zhuanlan.zhihu.com/p/92470130
//1.user.Password在类的外部只能改不能读
//Entity.User Password = new Entity.User();
//Password.Password = "******";
//2.如果user.Name为“admin”，输入时修改为“系统管理员”
//Entity.User user = new Entity.User();
//user.UserName = "******";
//3.problem.Reward不能为负数
//Entity.Problem problem = new Entity.Problem();
//problem.Reward = -1;
//调用这些类的有参/无参构造函数，生成这些类的对象，调用他们的方法
//3. 一起帮的求助可以有多个（最多10个）关键字，请为其设置索引器，以便于我们通过其整数下标进行读写
//Entity.Problem problem = new Entity.Problem();
//Console.WriteLine(problem[52]);
//设计一种方式，保证：每一个Problem对象一定有Body赋值每一个User对象一定有Name和Password赋值
//Go to (Problem Page) OR (User Page )watch.
#endregion
#region Third Day Homework. https://zhuanlan.zhihu.com/p/95261748
//1.Publish()：发布一篇求助，并将其保存到数据库
//Entity.Problem problem = new Entity.Problem();
//problem.HelpMe();
///3.设计一个类FactoryContext，保证整个程序运行过程中，
///无论如何，外部只能获得它的唯一的一个实例化对象。（提示：设计模式之单例）
///
//new Entity.FactoryContext().Show(); // probably is private function make this red line...
///4.想一想，为什么Publish()方法不是放置在User类中呢？
///用户（user）发布（Publish）一篇文章（article）
///，不正好是user.Publish(article) 么？
///
///这里也有发布的啊，如果那里有需要发布，继承一个就好了，或者直接引用这里的方法就可以。
///如果这么说对的话，我还可以继续说，如果说的不对那就当我没说。
///5.自己实现一个模拟栈（MimicStack）类，入栈出栈数据均为int类型，包含如下功能：
///5.1出栈Pop()，弹出栈顶数据
///5.2入栈Push()，可以一次性压入多个数据
///5.3 出 / 入栈检查，
///5.4如果压入的数据已超过栈的深度（最大容量），提示“栈溢出”如果已弹出所有数据，提示“栈已空”
//MimicStack stack = new MimicStack();
//stack.push(223573);
//stack.pop();
//stack.pop();
//stack.push(123);
//stack.push(22743);
//stack.push(233);
//stack.push(22213);
//stack.pop();
//stack.push(32213);
//stack.push(52213);
//stack.push(2213);
//stack.pop();
//stack.push(22813);
//stack.push(22313);
//stack.push(224213);
//stack.push(92212463);
//stack.push(1);
//stack.push(1);
//stack.push(1);
//stack.push(1);
//stack.pop();
//stack.pop();
//stack.pop();
//stack.pop();
//stack.pop();
//stack.pop();
//stack.pop();
//stack.pop();
//stack.pop();
//stack.pop();
//stack.pop();
//stack.pop();
//3.实例化文章和意见建议，调用他们：继承自父类的属性和方法自己的属性和方法
// it's for parents
//Entity.Content content = new Article();//here is for article page.
//content.Release();
//content = new Problem();//here is for problem page.
//content.Release();
//content = new Suggest();//here is for suggest page.
//content.Release();
//Article article = new Article();
//4.再为之前所有类（含User、HelpMoney等）抽象一个基类：Entity，
//包含一个只读的Id属性。试一试，Suggest能有Id属性么？
///只是把任务要求造出来了，具体啥意思也不知道。suggest ID指的是啥？？？
///这个作业后补。
#endregion
#region Fourth Day Homework "多态" https://zhuanlan.zhihu.com/p/93053223
///1.添加一个新类ContentService，其中有一个发布（Publish()）方法：
/// 如果发布Article，需要消耗一个帮帮币
/// 如果发布Problem，需要消耗其设置悬赏数量的帮帮币
/// 如果发布Suggest，不需要消耗帮帮币
///最后将内容存到数据库中，三个类存数据库的方法是完全一样的，
///现在用Console.WriteLine()代替。根据我们学习的继承和多态知识，实现上述功能。
///
///
///maybe i made big mistake.homework write not like this.---T_T||...
//ContentService contentService = new ContentService("Article",20);
//contentService.publish();
#endregion
#region Fifth Day 思考之前的Content类，该将其抽象成抽象类还是接口？https://zhuanlan.zhihu.com/p/93224519
///1.思考之前的Content类，该将其抽象成抽象类还是接口？为什么？并按你的想法实现。
///
//思考应该用interface接口，但是一改Errors爆满，无从下手改。。。。
///2.一起帮里的求助总结、文章和意见建议，以及他们的评论，
///都有一个点赞（Agree）/踩（Disagree）的功能，赞和踩都会增减作者及评价者的帮帮点。
///能不能对其进行抽象？如何实现？
///
#endregion
#region Six Day 1.用代码证明struct定义的类型是值类型 栈的学费是按周计费的，所以请实现这两个功能：
//1.用代码证明struct定义的类型是值类型 (MyClass and MyStruct at this page.)
//MyClass myClass = new MyClass();
/*myClass._test = 23;*/ //这里的23是赋值到一个地址里面去。
//MyStruct myStruct = new MyStruct();
/*myStruct._test = 23;*/ //这里是值类型。
/// 1.函数GetDate()，能计算一个日期若干（日/周/月）后的日期
///2.给定任意一个年份，就能按周排列显示每周的起始日期，如下图所示：
//DataTimeCount.GetWeek(2000);
#endregion
#region Seven Day homework about Token
//TokenManager tokenManager = new TokenManager();
//tokenManager.Add(Token.Admin);
//tokenManager.Add(Token.Blogger);
//tokenManager.Add(Token.Registered);
//tokenManager.Remove(Token.Blogger);
//tokenManager.Has(Token.Admin);
#endregion
#region https://zhuanlan.zhihu.com/p/93458057C#-面向对象-万物皆对象：Object和装箱拆箱
///1.思考dynamic和var的区别，并用代码予以演示
///
//请忽略命名，命名采用var的第一个字母，和一个随便的i,dynamic也是一样
//var Vi = "88";
//dynamic Di = "88";
//区别在于，var是推倒类型，在使用中因为vi被推导为string类型所以无法完成表达式
//无法通过编译，所以直接报错。
//Console.WriteLine(Vi - 8);
//dynamic是动态类型，在编译时默认跳过，所以不会有报错的发生，但如果运行时候会报运行错误
//结果是一样的。
//Console.WriteLine(Di-8);
//2.构造一个能装任何数据的数组，并完成数据的读写
//我不知道还有什么类型了，字符串，数字，元组，bool,小数，数组，应该差不多了。
//object[] AnyArray = { "王胖子很帅", 26, (23, "17cm"), new Student() ,true ,888.8,new int [17,18,19,20,22]};
//for (int i = 0; i < AnyArray.Length-1; i++)
//{//想不到我现在竟然可以随手就写一个完美的循环出来。
// Console.WriteLine(AnyArray[i]);
//}
//Console.WriteLine(AnyArray);
//3.使用object改造数据结构栈（Stack），并在出栈时获得出栈元素
//都已经如此完美了，还怎么优化。。。
///
#endregion
#region https://zhuanlan.zhihu.com/p/93440022C#-面向对象-反射和特性
//2.在Content之外封装一个方法，可以修改Content的CreateTime和PublishTime
//FixTime.FixContentTime(2019, 10, 19);
///3.自定义一个特性HelpMoneyChanged（帮帮币变化）：
///1.该特性只能用于方法
///2.有一个构造函数，可以接受一个int类型的参数amount，表示帮帮币变化的数量
///3.有一个string类型的Message属性，记录帮帮币变化的原因
///
//作业在User页面
///5.用反射获取Publish()上的特性实例，输出其中包含的信息
///
//这个地方有BUG，把自己写迷糊了。歇会儿换个思路，如果换不出来就等飞哥来换。
//思路是这样的，我要使用GetHM这个函数，必须有一个参数，参数需要找Publish这个方法要
//要找publish方法首先我需要有一个contentservice这个对象，有了这个对象，还得给publish传参...我的天
//ContentService service = new ContentService();
//service = service.Publish(Article article);
//GetPublish.GetHM(service);
#endregion
#region https://zhuanlan.zhihu.com/p/93747718 C#-面向对象：string还是StringBuilder？
///确保文章（Article）的标题不能为null值，也不能为一个或多个空字符组成的字符串，
///而且如果标题前后有空格，也予以删除
///
//Article wpz1 = new Article(string.Empty);
//Article wpz2 = new Article(" ");
//Article wpz3 = new Article(null);
//Article wpz4 = new Article("");
//Article wpz5 = new Article(" ");
//Article wpz = new Article(" 王胖子比飞哥帅的多 ");
//设计一个适用的机制，能确保用户（User）的昵称（Name）不能含有admin、17bang、管理员等敏感词。
//User wpz4 = new User("qqadminw", "~qweqwe");
//User wpz5 = new User("wwadminw", "!qweqwe");
//User wpz6 = new User("adminee", "@qwe123");
//User wpz7 = new User("adminee", "@qwe123");
//User wpz8 = new User("qq17bang", "@qwe123");
//User wpz9 = new User("qq17bangww", "@qwe123");
///确保用户（User）的密码（Password）：长度不低于6
///必须由大小写英语单词、数字和特殊符号（~!@#$%^&*()_+）组成
///
//这个密码应该还差点东西没写对
//User user = new User("", "abcabc");
//User user1 = new User("", "==abcabc");
//User wpz = new User("admin", "~!@# $%^&*()_+");
//User wpz1 = new User("admin", "~qw---eqwe");
//User wpz2 = new User("admin", "!qweqwe");
//User wpz3 = new User("admin", "@qwe123");
#endregion
#endregion
#region Practies area.. Here is not homeword,just selftry.
//Self wang = new Self();
//Type typeinfo = typeof(Self);
//FieldInfo wangpz = typeinfo.GetField("_try", BindingFlags.NonPublic | BindingFlags.Instance);
//object Try = wangpz.GetValue(wang);
//Console.WriteLine(Try);
//Self yb = new Self();
//Type diyibu = typeof(Self);
//FieldInfo dierbu = diyibu.GetField("_iTry", BindingFlags.NonPublic |BindingFlags.Instance| BindingFlags.GetProperty);
//object disubu = dierbu.GetValue(yb);
//Console.WriteLine(disubu);
//disubu = 222;
//Console.WriteLine(disubu);
//Self self = new Self();
//Console.WriteLine(self);
//object tlzz = new Student();
//NowTry.Praise(tlzz);
//object wpz = new Teacher();
//NowTry.Praise(wpz);
//string name = string.Empty;
//if (student ==null)
//{
// name = "无姓名";
//}
//else
//{
// name = student.name;
//}
//string name = student == null ? "无姓名" : student.name;
//student student =null;
//Console.WriteLine(student?.IsMale);
//bool? gender = student?.IsMale;
//gender = false;
//int[] vs = new int[] { 16, 23, 25, 22 };
//List<int> ages = new List<int> {16,23,25,22 };
//IEnumerator<int> enumerator = ages.GetEnumerator();
//while (enumerator.MoveNext())
//{
// Console.WriteLine(enumerator.Current);
//}
//LinkedList
#endregion
}
public static ProvideWater GetWater(ProvideWater provide)
{
return(provide);
}
public static void GetWater(ProvideWater provideWater)
{
Console.WriteLine($"得到水{provideWater(new Person())}");
}
public int GetWater(ProvideWater providewater)
{
return(providewater(this));
}
//声明一个方法GetWater()，该方法接受ProvideWater作为参数，并能将ProvideWater的返回值输出
public static int GetWater(ProvideWater provide)
{
Person person = new Person();
return(provide(person));
}
public static void GetWater(ProvideWater provideWater, Person person)
{
Console.WriteLine(provideWater(person));
}
public static int GetWater(Person person, ProvideWater pw)
{
return(pw(person));
}
