Don't think so. I'm pretty sure padding of strings is only with
spaces. Padding of numbers has to be specified for a number format.

let hex_of_byte b = Printf.sprintf "%02X" b;;

Why you'd use two sprintfs is the real oddity =P

Jonathan

On 2/4/07, Oliver Bandel <oliver@first.in-berlin.de> wrote:
> Hello,
>
> this I explored:
>
> # let hex_of_byte b = Printf.sprintf "%02s" (Printf.sprintf "%0X" b);;
> val hex_of_byte : int -> string = <fun>
> # hex_of_byte 12;;
> - : string = " C"
>
> Shouldn't the result be "0C" ?!
> (I'm using OCaml 3.09.3.)
>
>
> Ciao,
>  Oliver
>
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