Thank you to anyone who has already donated - your generous donations helped make three months of treatment possible.

My brother Nate continues to fight stage IV Hodgkin's lymphoma. He's just 31, with a wife and baby girl. They have no active income (since he's been unable to return to work), no insurance, and cannot afford the treatment he needs. Nate and his family need your help. Please consider a donation, every dollar helps. Thanks.

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public interface IDirectoryVisitor{ 

   public void Visit(DirectoryInfo directory); 

}

public class DirectoryMiner{

    private IList _visitors = new List();

    public void Accept(IDirectoryVisitor visitor){
        _visitors.Add(visitor);
    }

    public void MineDirectory(DirectoryInfo directory){

        _visitors.Each(v => v.Visit(directory));

        directory.GetDirectories().Each(dir=>MineDirectory(dir));
    }
}

public static EachExtension
{
   public static void Each(this IEnumerable list, Action action){

       foreach( var item in list){ action(item); }

   }
}