anchor.diff:  open System.IO
   
  -let ``pride and prejudice`` = __SOURCE_DIRECTORY__ + "../pride_and_prejudice.txt"
  +let ``pride and prejudice`` = __SOURCE_DIRECTORY__ + "../pride-and-prejudice.txt"
   let test = __SOURCE_DIRECTORY__ + "../test.txt"
   
   (* 
  
positive.code:             loop <| reader.ReadLine()
      loop <| reader.ReadLine()    
  
      list |> Seq.map (fun kvp -> kvp.Key, kvp.Value) |> Seq.toArray
  
  top25 |> Array.iter (fun (word, count) -> printfn "%s - %d" word count)
negative.code:                           FileMode.Create, 
                            FileAccess.ReadWrite)
  
  let input = new StreamReader(``pride and prejudice``)
  //let input = new StreamReader(test)
  let next  = input.ReadLine
  let (|IsAlnum|_|) c = if System.Char.IsLetterOrDigit c then Some () else None
  let (|Int|) input = System.Int32.Parse input
  