using System.Collections.Generic;
using System.Collections.Immutable;
public static class Program
private static readonly ImmutableDictionary<string, Action> CommandMap
= new Dictionary<string, Action>()
["help"] = () => PrintHelp(),
["quit"] = () => ExitProgram(),
["shutdown"] = () => ShutdownSystem(),
}.ToImmutableDictionary();
private static void PrintHelp() => Console.WriteLine($"{nameof(PrintHelp)}"); private static void ExitProgram() => Console.WriteLine($"{nameof(ExitProgram)}"); private static void ShutdownSystem() => Console.WriteLine($"{nameof(ShutdownSystem)}"); private static IEnumerable<string> CommandList { get; } = new[] { "help", "reboot", "shutdown" }; private static void FixMe()
.Select(n => CommandMap.TryGetValue(n, out var action)
foreach (var action in list)
public static void Main(string[] args)
