C# 运算符重载和 implicit关键字

运算符重载是指允许用户使用用户定义的类型编写表达式的能力。它允许用户定义的类型与预定义的类型具有相同的功能。

implicit 关键字用于声明隐式的用户定义类型转换运算符。如果转换过程可以确保不会造成数据丢失，则可使用该关键字在用户定义类型和其他类型之间进行隐式转换。

public class Student
    {
        public Student()
        {

        }
        public Student(string name)
        {
            this.Name = name;
        }
        public string Name
        {
            get;
            set;
        }
        public int Age
        {
            get;
            set;
        }
        public static Student operator &(Student s1, Student s2)
        {
            Student st = new Student();
            st.Age = s1.Age + s2.Age;
            return st;
        }
        public static implicit operator Student(string name)
        {
            return new Student(name);
        }
class Program
    {
        static void Main(string[] args)
        {
            Student s1 = new Student() { Name = "wang", Age = 11 };
            Student s2 = new Student() { Name = "Li", Age = 13 };
            Student st = s1 & s2;
            Console.WriteLine(st.Age);
            Fun("wanglijiang");
        }
        static void Fun(Student st)
        {
            Console.WriteLine(st.Name);
        }

    }