From: "Jonathan Roewen" <jonathan.roewen@gmail.com>
To: "Oliver Bandel" <oliver@first.in-berlin.de>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] sprintf-Bug?
Date: Sun, 4 Feb 2007 14:55:32 +1300 [thread overview]
Message-ID: <ad8cfe7e0702031755o1b3bf460sc25fee8ae62463f3@mail.gmail.com> (raw)
In-Reply-To: <20070204015122.GA3882@first.in-berlin.de>
I gave the example :P "%02X" prints a number as hex, 2 chars in length
(assuming no more than 2 chars wide), padded with zeroes. Same as
you'd do in any other lang with C-style printf.
On 2/4/07, Oliver Bandel <oliver@first.in-berlin.de> wrote:
> On Sun, Feb 04, 2007 at 02:11:43PM +1300, Jonathan Roewen wrote:
> > Don't think so. I'm pretty sure padding of strings is only with
> > spaces.
>
> The format-string "%02s" should make a '0' instead of ' '
> as filling, IMHO.
>
>
> > Padding of numbers has to be specified for a number format.
>
> IMHO "%2s" should make a string of at least two chars
> length, fillingup with ' ' on the left side.
>
> And "%0s" should make it with a filling-char '0'
> instead of filling-chars ' '.
>
>
>
> >
> > let hex_of_byte b = Printf.sprintf "%02X" b;;
> >
> > Why you'd use two sprintfs is the real oddity =P
>
> The inner sprintf makes hex from int and the outer
> makes two-char-string instead of one-char-string.
>
> Or how to make hex-output with filling '0' instead
> of ' ' for two-char length strings?
>
> Would a "%00X" work?!
>
>
> Ciao,
> Oliver
>
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next prev parent reply other threads:[~2007-02-04 1:55 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-04 1:00 sprintf-Bug? Oliver Bandel
2007-02-04 1:11 ` [Caml-list] sprintf-Bug? Jonathan Roewen
2007-02-04 1:51 ` Oliver Bandel
2007-02-04 1:55 ` Jonathan Roewen [this message]
[not found] ` <45C53E45.1080109@rftp.com>
2007-02-04 2:08 ` Oliver Bandel
2007-02-04 2:11 ` Jonathan Roewen
2007-02-04 12:43 ` Oliver Bandel
2007-02-04 10:41 ` Christophe TROESTLER
[not found] <20070204020819.B999DBC6F@yquem.inria.fr>
2007-02-04 10:04 ` David Allsopp
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