C# Either example FP

EitherExample.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using Monacs.Core;

namespace EitherExampleExceptions
{
    class Program
    {
        static void Main(string[] args)
        {
            new App().Tee(app =>
            {
                Enumerable.Range(1, 1000)
                    .Select(i => app.GetOne())
                    .Select(one => one.Match(left: ex => $"Error of type {ex.GetType()}.",
                                             right: n => $"N is: {n}"))
                    .ToList()
                    .ForEach(Console.WriteLine);
            });
        }
    }

    public class App
    {
        Random rnd = new Random(123123214);

        Processors processors = new Processors
        {
            (dividedBy2, n => Either.Left<Exception, string>(new Exception())),
            (dividedBy3, n => Either.Left<Exception, string>(new AmbiguousMatchException())),
            (dividedBy5, n => Either.Left<Exception, string>(new ArithmeticException())),
            (_ => true,  n => Either.Right<Exception, string>(n.ToString()))
        };

        public Either<Exception, string> GetOne()
        {
            var n = rnd.Next();
            return processors.Process(n);
        }

        static Func<int, int, bool> dividedBy = (x, y) => x % y == 0;
        static Func<int, bool> dividedBy2 = x => dividedBy(x, 2);
        static Func<int, bool> dividedBy3 = x => dividedBy(x, 3);
        static Func<int, bool> dividedBy5 = x => dividedBy(x, 5);


    }

    public static class AppExtensions
    {
        public static App Tee(this App app, Action<App> action)
        {
            action(app);
            return app;
        }
    }

    class Processors : List<(Func<int, bool>, Func<int, Either<Exception, string>>)>
    {
        public Either<Exception, string> Process(int n) => this.First(x => x.Item1(n)).Item2(n);
    }
}