C#-数组(下)——元组.比较.doc

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using Instance1;using System.Collections;namespace Instance class Program static void Main(string args) /Instance1.gram.Divide() /var result = Instance1.gram.Divide(5, 2); /Console.WriteLine(result of division: 0 / reminder1, result.Item1, result.Item2); /超过八个参数的Tuple类定义，使用模板参数TRest /Instance1.Person() var janet = new Instance1.Person FirstName = Janet, LastName = Jackson ; Person persons1 = new Person FirstName = Michael, LastName = Jackson , janet ; Person persons2 = new Person FirstName = Michael, LastName = Jacson , janet ; if (persons1 != persons2) Console.WriteLine(not the same regerence); if (persons1 as IStructuralEquatable).Equals(persons2,EqualityComparer.Default) /as强制转换为IStructuralEquatable接口 Console.WriteLine(the same content); if (persons1 as IStructuralEquatable).Equals(persons2,EqualityComparer.Default) /EqualityComparer（T）检查T是否实现IEquatable接口并调用IEquatable.Equals()方法，没有继承接口则调用object的Equals()方法 Console.WriteLine(the same content); /对元组执行相同的操作 var t1 = Tuple.Create(1, tuple); var t2 = Tuple.Create(1, stephanie); if(t1 != t2) /因为引用两个不同不同对象所以true Console.WriteLine(not the reference to the tuple); if (t1.Equals(t2) /因为值一样，所以返回true Console.WriteLine(tbe same contrnt); /使用自定义类给Tuple类的方法传递一个新实例，要调用两次TupleComparer,来检查是否相等 /if (t1.Equals(t2, new TupleComparer() / Console.WriteLine(equals using TupleComparer); Console.ReadKey(); return; namespace Instance1 public class gram public static Tuple Divide(int dividend,int divisor) int result = dividend / divisor; int reminder = dividend % divisor; return Tuple.Create (result,reminder); /元组合并不同类型的对象 public class Person:IEquatable public int Id get; set; public string FirstName get; set; public string LastName get; set; public override string ToString() return String.Format(012,Id,FirstName,LastName); public override bool Equals(object obj) if (obj = null) throw new ArgumentNullException(obj); return Equals(obj as Person); public override int GetHashCode() return Id.GetHashCode(); public bool Equals(Person other) if (other = null) throw new ArgumentNullException(other); return this.Id = other.Id & this.FirstName = other.FirstName & this.LastName = other.LastName; /创建一个自定义的IEqualityComparer class TupleComparer:IEqualityComparer public new bool Equals(object x,object y) return x.Equals(y); public int GetH