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  1. let sierpinski =
  2.   let rec loop down space = function
  3.     0 -> down
  4.   | n ->
  5.     loop (List.map (fun x -> space + x + space) down
  6.           @ List.map (fun x -> x + " " + x) down)
  7.          (space + space)
  8.          (n - 1)
  9.   loop ["*"] " "
  10.  
  11. let input () =
  12.   match System.Console.ReadLine ()
  13.         |> System.Int32.TryParse with
  14.     n, true -> true
  15.   | _       -> 0
  16.  
  17. input ()
  18. |> sierpinski
  19. |> List.iter (printfn "%s")
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
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4
compilation info 
/home/JWGmCL/prog.fs(14,8): error FS0001: This expression was expected to have type
    int    
but here has type
    bool
stdout
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Standard output is empty
https://ideone.com/g8Lzm
language:
F# (mono 4.1)
created:
14 years ago
visibility:
public

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