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[Caml-list] printf hook
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Date: -- (:)
From: Remi VANICAT <vanicat@l...>
Subject: Re: [Caml-list] printf hook
"Nicolas Cannasse" <warplayer@free.fr> writes:

> Hi list !
> I would like do to something like this :
>
> let sprint msg =
>     print_endline ("BEGIN: "^(sprintf msg))
>
> without of course loosing the ability of having variable number of
> parameters in my "msg".
> Is that kind of thing possible ?

For just this, you could do :

let sprint msg =
   print_string "BEGIN: ";
   printf msg;;

But generally speaking, you need kprintf from the 
Not yet, it need kprintf that is in the development version of ocaml:

# Printf.kprintf;;
- : (string -> string) -> ('a, unit, string) format -> 'a = <fun>

so it would be something as :

let sprint msg = 
  let aux res = 
    print_endline ("BEGIN: " ^ res);
    res in
  kprintf res msg;;

-- 
Rémi Vanicat
vanicat@labri.u-bordeaux.fr
http://dept-info.labri.u-bordeaux.fr/~vanicat
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