How to calculate the circumference of a circle based on the following Circle class?

Hi Rich,

you can do it like this with a lambda-expression:

  Circle cir = new Circle();
  double circ = cir.Calculate((radius) => 2 * Math.PI * radius);

But note that the radius-field is 0 by default. I tried it with 5 like this:

  public sealed class Circle
    {
        private double radius = 5;

        public double Calculate(Func<double, double> op)
        {
            return op(radius);
        }
    }

I got the correct result of 31.4...

Have fun.

---

Thomas Claudius Huber



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