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问题：当这个类与新的KeyWord实现时,这是否自动完成？ (有些事情似乎不对劲)
@H_403_13@public class EmployeeComparer : IEqualityComparer<Employee>,IComparer<Employee>
EmployeeComparer：
@H_403_13@public bool Equals(Employee x,Employee y) { return String.Equals(x.Name,y.Name); } public int GetHashCode(Employee obj) { return obj.Name.GetHashCode(); } public int Compare(Employee x,Employee y) { return String.Compare(x.Name,y.Name); }
类：
@H_403_13@using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace ConsoleApplication1 { class Program { public delegate void Del(string e); Del handler = DelegateMethod; Dictionary<string,List<Employee>> d = new Dictionary<string,List<Employee>>(); public static void DelegateMethod(string message) { System.Console.WriteLine(message); System.Console.ReadKey(); } public void testDel(Del d) { d.Invoke("L"); } static void Main(string[] args) { Program p = new Program(); //p.handler("Hello World"); //p.handler("DisneyLand"); //p.handler("Cattle Wars"); //p.testDel(p.handler); var d = new SortedDictionary<string,SortedSet<Employee>>(); //Hashset no duplicates d.Add("AA",new SortedSet<Employee>(new EmployeeComparer())); d["AA"].Add(new Employee { Name = "A" }); d["AA"].Add(new Employee { Name = "B"} ); d["AA"].Add(new Employee { Name = "C"} ); d["AA"].Add(new Employee { Name = "C" }); d["AA"].Add(new Employee { Name = "C" }); d.Add("BB",new SortedSet<Employee>(new EmployeeComparer())); d["BB"].Add(new Employee { Name = "E"} ); d["BB"].Add(new Employee { Name = "F"} ); d["BB"].Add(new Employee { Name = "A"} ); d.Add("CC",new SortedSet<Employee>(new EmployeeComparer())); d["CC"].Add(new Employee { Name = "Z"} ); d["CC"].Add(new Employee { Name = "X"} ); d["CC"].Add(new Employee { Name = "Y"} ); d.Add("DD",new SortedSet<Employee>(new EmployeeComparer())); d["DD"].Add(new Employee { Name = "Z" }); d["DD"].Add(new Employee { Name = "U" }); d["DD"].Add(new Employee { Name = "U" }); d["DD"].Add(new Employee { Name = "Q" }); d["DD"].Add(new Employee { Name = "Y" }); foreach (var a in d) { Console.WriteLine(a.Key); foreach (var e in a.Value) { Console.WriteLine("\t" + e.Name); } } Console.ReadKey(); } } public class EmployeeComparer : IEqualityComparer<Employee>,IComparer<Employee> { public EmployeeComparer() { } public bool Equals(Employee x,y.Name); } } }
SortedSet<T>的实现调用Compare(在您的示例中,没有调用GetHashCode或Equals).就像你执行以下操作一样：
@H_403_13@void Main() { MyMethod(new EmployeeComparer()); } void MyMethod(IComparer<Employee> comparer) { var emp1 = new Employee { Name = "George" }; var emp2 = new Employee { Name = "Tom" }; Console.WriteLine(comparer.Compare(emp1,emp2)); }
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