Re: [Caml-list] [Question] Loading .ml in memory to interact with them.

["Kim Nguyễn" <Kim.Nguyen@lri.fr>]

On Thu, Mar 23, 2017 at 10:37 AM,  <paul.lachat@edu.univ-fcomte.fr> wrote:
> Hello,
>
>
> But when I send the first instruction (ex : #use "file.ml";;\n), the ocaml
> process send back the response and stop.
>

The problem here is that echo (or printf) closes the pipe_in fifo,
hence sending EOF to the ocaml toplevel. You need to force the fifo to
somehow remain open.

tail -f /tmp/pipe_in | ocaml > /tmp/pipe_out

in another terminal, echo to /tmp/pipe_in, and tail -f /tmp/pipe_out
to see the result.

Or a small ocaml program that open_out /tmp/pipe_in and copies its
standard input without closing /tmp/pipe_in (but flushing it
explicitely to be sure each line is sent as soon as possible) :

let () =
  let oc = open_out "/tmp/pipe_in" in
  while true do
    let s = read_line () in
    output_string oc s;
    output_char oc '\n';
    flush oc
  done

(catch exceptions where appropriate !).



Hope this helps,

-- 
Kim