Hello to everybody!

As I attempt to do every year, I've put online a downloadable version
of the ML archive.
It is at http://www.connettivo.net/cntprojects/ocaml_beginners (as it's
marked in the standard message footer for this ML).

Lately I changed my private email address for administering this list
and it happens to me to miss some requests for subscribing, for some
reasons unknown to me and possibly to my mailbox. I apologise for that.

If anybody attempting to subscribe with a decent email (i.e. an email
that can be found out to be in use for legitimate, non-spamming
purposes) notices that in spite of time fleeing, the list
administrator(s) does/do not show up and the subscription does not go
on, please feel free to knock at my/our mailbox dropping a line to
ocaml_beginners-owner <at> <guess-what>.

I must also say that I do not read all the messages passing. So if you
spot a spam message, and you notice that nobody takes action against it,
that's probably because I/we missed it; dropping me/us a line, you can
help keeping the list clean.

Well, and this is the README that goes with the archive:

----------------------------------------------------------
README
----------------------------------------------------------

The anonymized html archive of the Ocaml Beginners' Mailing List up to
31/12/2011, is available in .tar.bz2 form, as a folder with all messages
exchanged in the ML so far, grouped by year.
If you can host it in extended form, that would be great (and remember
to tell the list!):
I am not doing so just because I don't have enough web space for all my
interests...

Bye!

One of the mantainers of the Ocaml Beginner's Mailing List (E.T.)

PS1: I've been stripping the domain names from the e-mails
using the following sed commands:
sed 's/\([-_\+\.0-9a-zA-Z]* <at> \)[-_\.0-9a-zA-Z]*/\1.../g'
sed 's/\([-_\+\.0-9a-zA-Z]*%40\)[-_\.0-9a-zA-Z]*/\1.../g'
and I've been checking the results quickly with
grep -rE " <at> [0-9a-zA-Z]+" *
grep -rE "%40[0-9a-zA-Z]+" *
If you detect any domain name left over, please tell the list, I'll
strip it away.
----------------------------------------------------------

Ciao !

Ernesto Torresin (acting as a list administrator)

• New Members 3

Hello,

Is there a way to determine if Random has been
initialized?

I'd like some of my functions to fail in case the RNG is used
without having been initialized previously.

Thanks,
F.

• New Members 3

Suppose that I have an OCaml program that reads from an
input channel and then writes to an output channel.

What's the easiest way of attaching this to a web page?

By that, I mean that the web page should offer the recipient
R a text box. Whatever R types into the box and submits,
should be delivered as input to the OCaml program. Its
output should then be returned to the user as a web page.

For my purposes, the html formatting etc can all be ultra
simple; I'd just like to know how to make the program's IO
behavior available over the web.

Many thanks for your help!

Joshua
--
Joshua D. Guttman
WPI, Computer Science

• New Members 5

On Sun, 2012-02-05 at 11:44 +0100, Philippe Veber wrote:

> open Batteries_uni

alright, this works. Quite confusing, though.

--
Best regards,
Boris

[Non-text portions of this message have been removed]

• New Members 5

Hello,

according to the manual, the BatArray module can be used to override the
Array module. Also, the notation Array.<function> is used in the manual.
However, I have to use the notation BatArray.<function> instead as the
module is named BatArray. Is this a flaw in the manual or is there a way
to use the Array.<function> notation?
--
Best regards,
Boris

• New Members 5

Hello,

in our project we have a lot of modules. Now, we need to include
camlimages to create jpeg-files. But now, we got a namespace conflict,
because our own modules share the same namespace with camlimages,
example: bmp, color and so on.

We need camlimages only to save a jpeg-file

There are any workaround to avoid namespace conflict without renaming
all our modules? Is it possible to decide between "local" modules within
actual dir (our project) and external ocaml dirs...

Could you help?

With best regards

Andreas
--
Andreas Romeyke
- Abteilung Blindenschrift -
Deutsche Zentralbücherei für Blinde zu Leipzig (DZB)
Gustav-Adolf-Straße 7, 04105 Leipzig
Tel: +49 341 7113-..., Fax: +49 341 7113-125
Internet: www.dzb.de
E-Mail: andreas.romeyke <at> dzb.de

[Non-text portions of this message have been removed]

• New Members 3

I'm having trouble calling read_line in a parent thread when a child thread
makes a system call:

dan$ threadtest
Press <ENTER> to stop the alarm.Fatal error: exception Sys_blocked_io

Why doesn't this work?
The sound file plays once, and the program exits immediately.

let alarm_is_on = ref false

let play_alarm () =
let rec play () =
if !alarm_is_on then begin
ignore (Sys.command "aplay -q /usr/share/sounds/Zen/login-gong.wav");
Thread.delay 5.;
play ()
end in
alarm_is_on := true;
let _ = Thread.create play () in
try
print_string "Press <ENTER> to stop the alarm.";
ignore (read_line ());
alarm_is_on := false
with
x -> alarm_is_on := false; raise x

let () = play_alarm ()

[Non-text portions of this message have been removed]

Hello,

in our project we are using the debianized version of ocaml-packages
including sexplib in version 4.2.16 (Debian Squeeze)

But in upcoming versions sexplib, pE. 7.0.4 in Debian Testing, you need
to add this line:

open Sexplib.Std;;

explicitely, see
http://article.gmane.org/gmane.comp.lang.caml.general/52962 for details.

My question is, how could we handle this problem to use *one*
source-package which could be compiled under Debian Squeeze and Testing,
too?

Any hints?
--
Andreas Romeyke
- Abteilung Blindenschrift -
Deutsche Zentralbücherei für Blinde zu Leipzig (DZB)
Gustav-Adolf-Straße 7, 04105 Leipzig
Tel: +49 341 7113-..., Fax: +49 341 7113-125
Internet: www.dzb.de
E-Mail: andreas.romeyke <at> dzb.de

[Non-text portions of this message have been removed]

Hello,

This is the error I get when I compile using the following command:

ocamlfind ocamlopt -package camlp4,batteries \
-linkpkg -o test_logger -annot -g \
-pp "camlp4o -parser Camlp4MacroParser" \
biocaml_logger.cmx test_logger.cmx test_logger_main.cmx

What am I missing in the compilation command?

Thanks a lot,
Francois.

Hello,

I can't put
type ts_formatter = float -> string
in a module signature?

Why?

Thanks,
F.

Hello,

I installed parmap in /usr/local/lib/ocaml/3.11.2/. How do I tell
ocamlopt to use it? Also, can I use parmap functions in the REPL?

Ocamlfind does find parmap, but my makefile doesn't use ocambuild. What
is the right approach when using ocamlbuild, and how is it done with Gnu
make only, ie w/o ocamlbuild?

-Boris

[Non-text portions of this message have been removed]