Csharp/CSharp Tutorial/Class/Hash Code

Override the GetHashCode method from object

using System;
public sealed class ComplexNumber
{
    public ComplexNumber( double real, double imaginary ) {
        this.real = real;
        this.imaginary = imaginary;
    }
    public override int GetHashCode() {
        return (int) Math.Sqrt( Math.Pow(this.real, 2) * Math.Pow(this.imaginary, 2) );
    }
    private readonly double real;
    private readonly double imaginary;
}