Public Structure Complex
   Private m_Re As Double 
   Private m_Im As Double 

   Public Overloads Function Equals(ob As Object) As Boolean 
      If TypeOf ob Is Complex Then 
         Dim c As Complex = CType(ob, Complex)
         Return m_Re = c.m_Re And m_Im = c.m_Im
      Else 
         Return False 
      End If 
   End Function 


   Public Overloads Function GetHashCode() As Integer 
      Return m_Re.GetHashCode() ^ m_Im.GetHashCode()
   End Function 

End Structure

public struct Complex 
	{
		public double m_Re;
		public double m_Im;

		public override bool Equals( object ob ){
			if( ob is Complex ) {
				Complex c = (Complex) ob;
				return m_Re==c.m_Re && m_Im==c.m_Im;
			}
			else {
				return false;
			}
		}

		public override int GetHashCode(){
			return m_Re.GetHashCode() ^ m_Im.GetHashCode();
		}
	}

public ref struct Complex
{
public:
   double m_Re;
   double m_Im;
   virtual bool Equals( Object^ ob ) override
   {
      if ( dynamic_cast<Complex^>(ob) )
      {
         Complex^ c = dynamic_cast<Complex^>(ob);
         return m_Re == c->m_Re && m_Im == c->m_Im;
      }
      else
      {
         return false;
      }
   }

   virtual int GetHashCode() override
   {
      return m_Re.GetHashCode() ^ m_Im.GetHashCode();
   }
};