来自MSDN的一个示例
public struct Complex
{
double re, im;
public override bool Equals(Object obj)
{
return obj is Complex c && this == c;
}
public override int GetHashCode()
{
return re.GetHashCode() ^ im.GetHashCode();
}
public static bool operator ==(Complex x, Complex y)
{
return x.re == y.re && x.im == y.im;
}
public static bool operator !=(Complex x, Complex y)
{
return !(x == y);
}
}