Measurements for SO answer with ID 32025538

32025538-measure.cs

// comment this out to see how comparatively expensive it is if all you have are properties.
#define FIELDS

using System;
using System.Diagnostics;

namespace ConsoleApplication1
{
    struct Point
    {
#if FIELDS
        internal double X;
        internal double Y;
#else
        internal double X { get; set; }
        internal double Y { get; set; }
#endif
    }

    class Program
    {
        static void Main(string[] args)
        {
            Point[] points = new Point[1000000];
            Initialize(points);

            // warm up
            TransformAllPoints(points);

            Stopwatch sw = Stopwatch.StartNew();

            for (int i = 0; i < 5000; i++)
            {
                TransformAllPoints(points);
            }

            sw.Stop();

            Console.WriteLine("Took {0} seconds.", sw.ElapsedTicks / (double)Stopwatch.Frequency);
        }

        static void TransformAllPoints(Point[] points)
        {
            for (int i = 0; i < points.Length; i++)
            {
#if FIELDS
                TransformPoint(ref points[i].X, ref points[i].Y);
#else
                double x = points[i].X;
                double y = points[i].Y;
                TransformPoint(ref x, ref y);
                points[i].X = x;
                points[i].Y = y;
#endif
            }
        }

        static void TransformPoint(ref double x, ref double y)
        {
            x++;
            y++;
        }

        static void Initialize(Point[] points)
        {
            Random rand = new Random(32025538);
            for (int i = 0; i < points.Length; i++)
            {
                points[i].X = rand.NextDouble() * 13;
                points[i].Y = rand.NextDouble() * 13;
            }
        }
    }
}