C#: 关于struct 和 class 的试验

  class Try_StructClass
    {
        public void Test()
        {
 
            Number a = 1;
            Number b = a;
            a = 2;
            WriteLine($"a={a}, b={b}"); //a=2, b=1
            Text A = 1;
            Text B = A;
            A = 2;
            WriteLine($"A={A}, B={B}"); //A=2, B=1

            var arrA = new Number[] { 1, 2, 3 };
            var arrB = arrA;
            arrA[1] = 10;
            WriteLine($"arrA={string.Join(",", arrA)}, arrB={string.Join(",", arrB)}"); //arrA=1,10,3, arrB=1,10,3
            var arrC = new Text[] { 1, 2, 3 };
            var arrD = arrC;
            arrC[1] = 10;
            WriteLine($"arrC[1]={arrC[1]}, arrD[1]={arrD[1]}"); //arrC[1]=10, arrD[1]=10
            var arrE = new double[] { 1, 2, 3 };
            var arrF = arrE;
            arrE[1] = 10;
            WriteLine($"arrE[1]={arrE[1]}, arrF[1]={arrF[1]}"); //arrE[1]=10, arrF[1]=10
            ReadKey();
        }
        struct Number
        {
            double Value;
            private Number(double Val)
            {
                this.Value = Val;
            }
            public static implicit operator double(Number number)
            {
                return number.Value;
            }
            public static implicit operator Number(double Value)
            {
                return new Number(Value);
            }

            public override string ToString()
            {
                return this.Value.ToString();
            }
        }
        class Text
        {
            double Value;
            private Text(double val)
            {
                this.Value = val;
            }
            public static implicit operator double(Text text)
            {
                return text.Value;
            }
            public static implicit operator Text(double val)
            {
                return new Text(val);
            }
            public override string ToString()
            {
                return this.Value.ToString();
            }
        }
    }