using System;

using System.Linq;

public class Program

{

    public class WithToArray

    {

        public double[] ToArray()

        {

            return new double[] { 1, 2 , 3 };

        }

    }

    public static void Main()

    {

        // One dimentional array

        WithToArray[] weirdThings = new [] { new WithToArray(), new WithToArray() };

        // Jagged Arrays

        double[][] arr = weirdThings.Select(x => x.ToArray()).ToArray();

        Console.WriteLine("Type: {0}", arr);

        Console.WriteLine("Content of weirdThings: {0}", string.Join<WithToArray>(", ", weirdThings));

        int rows = arr.GetLength(0);

        for(int i = 0; i < rows; i++) {

            for (int j = 0; j < arr[i].Length; j++) {

                Console.WriteLine("arr[{0}][{1}]: {2}", i, j, arr[i][j]);

            }

        }

    }

}