using System;
using System.Collections.Generic;
 
namespace Karmian.Framework.Helpers
{
    public class LambdaComparer<T> : IEqualityComparer<T>
    {
        public LambdaComparer(Func<T, T, bool> equals, Func<T, int> getHashCode)
        {
            _equals = equals;
            _getHashCode = getHashCode;
        }
 
        readonly Func<T, T, bool> _equals;
        public bool Equals(T x, T y)
        {
            return _equals(x, y);
        }
 
        readonly Func<T, int> _getHashCode;
        public int GetHashCode(T obj)
        {
            return _getHashCode(obj);
        }
    } 
}

using System;
using System.IO;
using System.Reflection;
 
namespace ExecutableMemoryStream
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                if (args.Length == 0)
                    throw new TargetParameterCountException(
                             "Expected at least one parameter containing executable path.");
 
                using (FileStream fileStream = new FileStream(args[0], FileMode.Open))
                using (BinaryReader reader = new BinaryReader(fileStream))
                {
                    byte[] bin = reader.ReadBytes(Convert.ToInt32(fileStream.Length));
                    Assembly assembly = Assembly.Load(bin);
                    MethodInfo method = assembly.EntryPoint;
                    if (method != null)
                    {
                        object o = assembly.CreateInstance(method.ReflectedType.Name);
                        if (method.GetParameters().Length == 0)
                            method.Invoke(o, new object[0]);
                        else
                        {
                            string[] parameters = new string[args.Length - 1];
                            for (int i = 1; i < args.Length; i++)
                                parameters[i - 1] = args[i];
                            method.Invoke(o, new[] { parameters });
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                Console.BackgroundColor = ConsoleColor.Red;
                Console.ForegroundColor = ConsoleColor.White;
                Console.WriteLine();
                Console.WriteLine(ex.Message.PadRight(80));
                Console.BackgroundColor = ConsoleColor.Black;
                Console.ForegroundColor = ConsoleColor.Yellow;
                Console.WriteLine("Hit 'd' for details. Any other key will terminate application.");
                if (Console.ReadKey(true).KeyChar == 'd')
                {
                    Console.ForegroundColor = ConsoleColor.Gray;
                    Console.WriteLine();
                    Console.WriteLine(ex.StackTrace);
                    Console.ReadKey();
                }
            }
        }
    }
}