using System;

​

namespace Example

{

    class Program

    {

        static void Main()

        {

            ƒor (10..5)

            (

                Console.WriteLine

            );

​

            ƒor (5..10, Console.WriteLine);

        }

​

        public static Action<Action<int>> ƒor(Range range) =>

            x =>

            {

                int a = range.Start.Value;

                int b = range.End.Value;

                if (a > b) for (int i = a; i >= b; i--) x(i);

                else for (int i = a; i <= b; i++) x(i);

            };

​

        public static void ƒor(Range range, Action<int> action)

        {

            int a = range.Start.Value;

            int b = range.End.Value;

            if (a > b) for (int i = a; i >= b; i--) action(i);

            else for (int i = a; i <= b; i++) action(i);

        }

    }

}

​