using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace LambdaTest
{
  class Program
  {
    static void Main(string[] args)
    {
      List<string> foo = new List<string>()
      {
        "Hello", "World", "C# is awesome!"
      };

      foo.DoForEach(x => Console.WriteLine(x));
    }
  }

  public static class Extensions
  {
    public static void DoForEach<T>(this List<T> l, Action<T> a)
    {
      foreach (T t in l)
      {
        a(t);
      }
    }
  }
}