如何进行.NET 4新特性中的数组及元组比较

如何进行.NET 4新特性中的数组及元组比较，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。

数组自定义比较

Person.cs

 using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Collections;namespace ConsoleApplication4{    public class Person:IEquatable//继承IEquatable泛型接口    {        public int Id { get; set; }//属性id，没什么实际意义        public string FirstName { get; set; }        public string LastName { get; set; }        public override string ToString()        {            return string.Format("FirstName:{0},LastName:{1}", FirstName, LastName);        }        public override bool Equals(object obj)        {            if (obj == null) throw new ArgumentException("error");            return Equals(obj as Person);        }        public override int GetHashCode()//伴随着  重写的Equals        {            return Id.GetHashCode();        }        public bool Equals(Person other)//重要        {            return this.FirstName == other.FirstName;//自定义要比对的值（只比对FirstName）        }    }}

主程序

  Person p1 = new Person { FirstName = "曹操", LastName = "程昱" };            Person p2 = new Person { FirstName = "曹操", LastName = "荀攸" };            Person p3 = new Person { FirstName = "曹操", LastName = "关羽" };            Person p4 = new Person { FirstName = "刘备", LastName = "关羽" };            Person[] ps1 = { p1, p2 };            Person[] ps2 = { p1, p3 };            Person[] ps3 = { p3, p4 };            //            把数组强制装换成IStructuralEquatable接口              Console.WriteLine((ps1 as IStructuralEquatable).Equals(ps2, EqualityComparer.Default));//True            Console.WriteLine((ps2 as IStructuralEquatable).Equals(ps3, EqualityComparer.Default));//False            Console.ReadKey();

元组比较

            var tuple1 = Tuple.Create(1, 2);            var tuple2 = Tuple.Create(1, 2);            Console.WriteLine(tuple1.Equals(tuple2));//True            Console.WriteLine(tuple1==tuple2);//False            Console.ReadKey();

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