private static void Main()
{
var a = 1;
var b = 2;
var c = a == b; //ceq
var c11 = 1 == 2; //此方法直接被优化！
b = a;
a = 3;
var z1 = new ComplexNum(100, 200);
var z2 = new ComplexNum(100, 200);
//比较引用符
Console.WriteLine(ReferenceEquals(z1, z2) ? "引用符比较：它们是同一个复数" : "引用符比较：它们不是同一个复数");
//静态版Equals()函数
Console.WriteLine(Equals(z1, z2) ? "静态版比较，两个复数相等" : "静态版比较，两个复数不相等");
//实例版Equals()函数
Console.WriteLine(z1.Equals(z2) ? "实例版比较，两个复数相等" : "实例版比较，两个复数不相等");
//“==”运算符
Console.WriteLine(z1 == z2 ? "运算符比较，两个复数相等" : "运算符比较，两个复数不相等");
z1 = z2;
Console.WriteLine("--------");
var c1 = new Complex(100.1, 200.2);
var c2 = new Complex(100.1, 200.2);
//var a = ReferenceEquals(c1, c2);//内部的 == 非下面的 == ，下面的 == 是operator重载
//var b = c1 == c2;
Console.WriteLine($"c1 is ValueType?:{c1 is ValueType isValueType}");
//比较引用符
// ReSharper disable once ReferenceEqualsWithValueType
Console.WriteLine(ReferenceEquals(c1, c2) ? "引用符比较：它们是同一个复数" : "引用符比较：它们不是同一个复数");
//静态版Equals()函数
Console.WriteLine(Equals(c1, c2) ? "静态版比较，两个复数相等" : "静态版比较，两个复数不相等");
//实例版Equals()函数
Console.WriteLine(c1.Equals(c2) ? "实例版比较，两个复数相等" : "实例版比较，两个复数不相等");
//“==”运算符
Console.WriteLine(c1 == c2 ? "运算符比较，两个复数相等" : "运算符比较，两个复数不相等");
List <ComplexNum> list = new List <ComplexNum>();
Console.ReadKey();
}
protected bool Equals(ComplexNum other)
{
return(_imaginaryPart.Equals(other._imaginaryPart) && _realPart.Equals(other._realPart));
}
