ValueType.Equals : System Object Method « Development Class « C# / C Sharp

1. C# / C Sharp
2. Development Class
3. System Object Method

ValueType.Equals

 

using System;

public struct Complex {
   public double re, im;

   public override bool Equals(Object obj) {
      return obj is Complex && this == (Complex)obj;
   }

   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);
   }
}

class MyClass {

  public static void Main() {
    Complex cmplx1, cmplx2;

    cmplx1.re = 4.0;
    cmplx1.im = 1.0;

    cmplx2.re = 2.0;
    cmplx2.im = 1.0;

    if (cmplx1 != cmplx2)
      Console.WriteLine("The two objects are not equal.");
    if (! cmplx1.Equals(cmplx2))
      Console.WriteLine("The two objects are not equal.");

    cmplx2.re = 4.0;

    if (cmplx1 == cmplx2) 
      Console.WriteLine("The two objects are now equal!");
    if (cmplx1.Equals(cmplx2)) 
      Console.WriteLine("The two objects are now equal!");
  }
}

   
  

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