case (pointers to handles) so it's not
really useful for this.
I do agree with the rest of your points though, and it's good to have
intelligent discussion of the real issues at long last.
Rich.
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syntax, how about starting a
project to do something similar on top of lablgtk2? I for one would
welcome this since my current project uses lablgtk2 and Gtk is a pain
in the rear.
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ng for modern processors. I bet the C programs are doing
this, except that it won't obviously be called "tuning the GC"
although it amounts to precisely the same thing.
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reading the C code of the garbage collector
and sometimes the generated assembler from ocamlopt -S. It's pretty
straightforward to follow.
Rich.
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internationally standardized format for dates:
# Printer.Calendar.print "%F %T\n" (Calendar.now ()) ;;
2010-10-27 11:28:59
- : unit = ()
http://en.wikipedia.org/wiki/ISO_8601
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want to consider your whole architecture. Putting nginx or a very
cut-down Apache on the front and memcached between the webserver and
the database.
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bug reports are very
> welcome. The code lives on github (http://github.com/cyocum/OPLP).
These projects are not maintained any more but may be of
interest:
http://merjis.com/developers/weblogs
http://merjis.com/developers/hostip
Rich.
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__
On Tue, Oct 05, 2010 at 06:54:21PM +0100, Gareth Smith wrote:
> On 05/10/10 18:06, Richard Jones wrote:
> > [I'm sorry this isn't really the right place to bring this up, but
> > since I can't communicate on IRC, there wasn't much alternative]
> >
>
(and
the others).
18:03 < rwmjones> [I said something here]
18:03 -!- #ocaml Cannot send to channel
Rich.
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em is you'll be wanting to parse parameters, cookies
and the rest of it, and there it does get a little bit more
complicated.
I'm fairly sure ocamlnet can write standalone scripts like that? Gerd??
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offer both a concurrent/asynchronous and a direct-style
> interface.
Maybe I'm missing the point, but what's wrong with simply proxying the
HTTP connections through your favorite webserver to the backend
ocsigen/ocamlnet server?
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On Tue, Sep 14, 2010 at 09:46:24PM +0100, Richard Jones wrote:
> I've only used ancient to store simple arrays, and when we needed to
> do string equality I remember writing a function which was aware of
> the above issue (you can compare them byte for byte just fine, even
>
the same way. They are always compared using
pointer equality, so there's no issue.
I've only used ancient to store simple arrays, and when we needed to
do string equality I remember writing a function which was aware of
the above issue (you can compare t
: Merjis' looks outdated.
Well, Merjis's library needs some love, but it could be brought up to
date given some time and effort. If you want to access Adwords API
from OCaml I think this is your best (in fact, only) choice.
Rich.
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_
t;, $sum, $sum/1024/1024);
print " segments:\n";
foreach (@recs) {
printf ("%x-%x (%d bytes %.1f MB) %s %d\n",
$_->{start}, $_->{end}, $_->{size}, $_->{size}/1024/1024,
$_->{perms}, $_->{offset});
}
}
}
On Mon, Aug 30, 2010 at 11:02:52AM +0100, Richard Jones wrote:
> On Mon, Aug 30, 2010 at 10:43:42AM +0100, Hugo Ferreira wrote:
> > The output
> > shows memory usage below the 100M mark, however the unix command
> > "top" shows usage in the order of Gigabytes
escapes me at the moment.
Rich.
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0 > /proc/sys/kernel/randomize_va_space
> but first learn more about it.
>
> I believe recent Ocaml versions (did you try 3.12?) have GC improvements
> for that.
Would that be:
https://bugzilla.redhat.com/show_bug.cgi?id=445545
(fixed in OCaml 3.11)?
Rich.
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one potential solution to this.
> I'm using OCaml 3.11 on Fedora 12.
There are no specific issues with OCaml in Fedora 12 that I know of.
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On Sun, Jul 25, 2010 at 10:56:22PM +0100, Joel Reymont wrote:
> How does Ocsigen handle database operations?
I thought it was using PG'OCaml, but maybe I'm wrong.
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use, what to cache, optimizing HTML.
Here are a couple I like:
http://www.amazon.com/Building-Scalable-Web-Sites-Applications/dp/0596102356
http://www.amazon.com/Speed-Up-Your-Site-Optimization/dp/toc/0735713243
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On Thu, Jul 08, 2010 at 10:42:40AM -0500, Romain Beauxis wrote:
> Le jeudi 8 juillet 2010 06:44:34, Richard Jones a écrit :
> > Stdlib could bind the uname(2) syscall, but it's legendary in its
> > complexity. Seems more likely to cause problems than just calling out
> &g
On Thu, Jul 08, 2010 at 01:09:41PM +0200, Daniel Bünzli wrote:
> On Thu, Jul 8, 2010 at 12:23 PM, Richard Jones wrote:
>
> > How about running the external "uname" program.
>
> Yes, why not. I was hoping that I wouldn't have to resort to that kind
> of hacks,
X
it prints:
$ uname
Darwin
On all Linux distros it prints:
$ uname
Linux
Of course, only run external "uname" if Sys.os_type = "Unix".
Rich.
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e the values going between the
Perl and the OCaml code, and detect errors at runtime (at compile time
too in some circumstances).
http://git.annexia.org/?p=perl4caml.git;a=blob;f=perl.mli;h=64d7904eb633bcc410f796d19e289bca49931bb5;hb=HEAD#l258
Your users might not thank you for this ...
Ri
elp on the subject.
I wish you luck with this. SOAP/WSDL is a crazy non standard, and the
best thing to do is to add the bits you need to OC-SOAP to enable it
to work against the particular service you want to use.
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in all, this is not ideal for writing correct programs. Some sort
of exception analysis would be most welcome.
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ttp://oirase.annexia.org/libguestfs-1.3.13/ocaml/
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t I would add that such a thing
exists as the 'Std.dump' function in extlib.
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On Sat, Mar 13, 2010 at 06:55:37PM +, Richard Jones wrote:
> Essentially you have to register OCaml exceptions before you can call
> them from C, so it sounds like you're not calling some sort of SDL
> "init" function (or calling it too late in your program). Or poss
s like you're not calling some sort of SDL
"init" function (or calling it too late in your program). Or possibly
there is a bug in the ocaml-SDL bindings.
Rich.
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is error message.
> How should I interpret it?
Is the program linked to C code (apart from stdlib, I mean)?
AFAICT, no part of that message occurs in the OCaml codebase, although
my checked out version is a few months old now.
Rich.
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Use MPI as an easy way to spread the jobs over the nodes and for
coordinating the processes, then have each process open a shared
Ancient file (backed by NFS) for the read-only data.
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r multiple machines, then OCaml MPI
is probably the way to go.
Rich.
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any other
> way to acquire an account?
I think your email got eaten by my spam filter. I'll send an
invite in a moment.
Rich.
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e tried using SystemTap with userspace
DTrace-compatible probes to measure anything about total kernel +
userspace usage of OCaml programs? ie, this sort of thing:
http://sourceware.org/systemtap/wiki/AddingUserSpaceProbingToApps
but with OCaml programs.
Rich
hive files themselves.
http://git.annexia.org/?p=hivex.git;a=blob;f=generator/generator.ml;hb=HEAD
http://git.annexia.org/?p=hivex.git;a=tree;f=lib/tools;hb=HEAD
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# Two-elem block, second field is
# another block.
# Std.dump None ;;
- : string = "0"
# Std.dump (Some "foo") ;;
- : string = "(\"foo\")"
Rich.
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ntation used by Perl was changed to avoid this attack:
http://perl5.git.perl.org/perl.git/blob/HEAD:/perl.c#l1465
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On Tue, Feb 16, 2010 at 06:19:04PM +0100, Daniel Bünzli wrote:
> [1] http://ocamlunix.forge.ocamlcore.org/pipes.html
On a completely unrelated note, that is the best looking
hevea-translated TeX document I've ever seen. Is it all done through
choosing a good HTML stylesheet?
Rich.
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for Haskell.
http://www.annexia.org/tmp/Guestfs.hs.txt
Rich.
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On Mon, Feb 15, 2010 at 12:13:17AM +0100, Guillaume Yziquel wrote:
> Richard Jones a écrit :
> >On Sun, Feb 14, 2010 at 11:46:10PM +0100, Guillaume Yziquel wrote:
> >>Not the case.
> >[etc]
> >
> >It would help if you were to be more specific about the fu
An OCaml list is a
well-defined, well-typed version of the C ellipsis isn't it?
Rich.
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On Sun, Feb 14, 2010 at 06:06:50PM +, Richard Jones wrote:
> (3) A variant list of variants, or option labels
A comma got dropped there somehow; it should be:
A variant, list of variants, or option labels ...
which hopefully makes more sense.
Rich.
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d quite a tricky implementation in
OCaml. (Probably best to use ksprintf to convert to a string in OCaml
and then pass printw ("%s", str) in C).
In libguestfs where we autogenerate bindings we avoided varargs
altogether, because it's hard to map such a concept to a
7;ll put it up on
> github or google code. Thanks,
I think something like github / google code is a very good idea, then
someone can pick it up at a later date when they need it.
Rich.
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On Mon, Feb 01, 2010 at 11:18:07PM -0500, chaithanya kr wrote:
> Hi all. I am new to Ocaml. Just started learning recently.
There's also a beginners group for learning OCaml:
Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
Rich.
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ion
of the GC -- you can easily use one minor heap per thread, although
that is likely to just push the problem elsewhere.
Rich.
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is patch is
faulty or for some other unrelated reason, so YMMV.
Rich.
[1] http://fedoraproject.org/wiki/Architectures#Structure
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On Wed, Jan 20, 2010 at 03:21:08PM +0100, Damien Doligez wrote:
> It is our pleasure to celebrate the birthday of Andre-Marie Ampere
> by announcing the release of OCaml version 3.11.2.
Excellent news! I've built this for Fedora and RHEL 6.
Rich.
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the file or another
> implementation ?
The Internet Archive has it:
http://web.archive.org/web/*/http://www.aarg.net/~erik/ocaml/*
or:
http://www.annexia.org/tmp/stemmer-0.1.0.tar.gz
Sadly this code has no license information. You would have to contact
the original author about that.
R
or the OCaml Programming Language:
http://en.wikipedia.org/wiki/OCaml
Rich.
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On Tue, Dec 29, 2009 at 03:59:34PM +0100, Damien Doligez wrote:
> It is our pleasure to announce that the release of 3.11.2 is imminent.
Is there an ETA for 3.11.2? I'd very much like to include it in
RHEL 6.
Rich.
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On Sun, Jan 10, 2010 at 08:14:29PM +, Jon Harrop wrote:
> on a 64-bit Linux kernel running 32-bit userland
I'm assuming you mean x86 (not eg ppc64), in which case that's a very
unusual choice. Any reason for this?
Rich.
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bout this section.
> Rule 3: When I have a Abstract_tag block used to wrap a pointer in the C
> heap, it seems to me that you can just do it with a Field(v,0)=
> assignment. Do you need Store_field for that?
This is to do with the Remembered Set. See part 5 of the above
series.
Rich.
t sure about "new heap", but the way that heap pages are tracked
changed from 3.10 -> 3.11. In 3.10 a flat bitmap was used. This was
unsuitable for 64 bit address spaces[1] and in 3.11 a sparse structure
is used (a hash table).
Rich.
Home page:
http://code.google.com/p/bitstring/
API documentation:
http://people.redhat.com/~rjones/bitstring/html/Bitstring.html
Rich.
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ake[1]: *** [world] Error 10
make[1]: Leaving directory
`/home/rjones/d/fedora/cduce/devel/cduce-0.5.3/ocamlduce-3.11.2.0+rc1/ocaml-3.11.2+rc1'
error: Bad exit status from /var/tmp/rpm-tmp.tnLqgK (%build)
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On Tue, Jan 05, 2010 at 06:06:38PM +0100, Stéphane Glondu wrote:
> Richard Jones a écrit :
> > camlp5 - When you compile, it complains it doesn't know anything about
> > 3.11.2 and that this will require an upstream change.
>
> The first patch attached adds support for
On Tue, Dec 29, 2009 at 04:52:00PM +, Richard Jones wrote:
> On Tue, Dec 29, 2009 at 03:59:34PM +0100, Damien Doligez wrote:
> > The release candidate is available as source code at this address:
> > ftp://ftp.inria.fr/INRIA/Projects/cristal/ocaml/ocaml-3.11/ocaml-3.1
re's a clear chain of who
wrote what, and what was applied to what).
Rich.
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is pretty horrible compared to
tuareg-mode, which you have to install separately (albeit just a
apt-get/yum install away).
Rich.
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On Tue, Jan 05, 2010 at 12:03:39AM -0600, Grant Rettke wrote:
> What is your favorite editor for hacking with OCaml?
emacs + tuareg-mode
Rich.
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b;f=src/libvirt_private.syms;hb=HEAD
In answer to your original question, initialization of the BSS is the
job of the loader (ld-linux.so(8)). OCaml just calls dlopen(3), which
calls into some extremely well-tested code, so it was always going to
be unlikely that BSS initialization was the probl
After testing this release candidate, please send a mail to
> and tell us what you tested and whether
> it worked.
I've pushed this out to Fedora Rawhide users after some very light
testing myself. If there are any major problems we should see reports
from QA systems and users in a da
libasmrun.a for my situation?
I think you've hit this bug:
http://caml.inria.fr/mantis/view.php?id=4795
Probably would get fixed faster if someone would work out the
assembler hoops required to generate PIC code on x86-64 and then post
a patch to the bug.
Rich.
--
ested in creating a user group. Users of
> > other functional programming languages are of course also welcome.
>
> I post this here, because I would like to meet some local Ocaml users as
> well who are interested in joining such user group. Anyone?
Have a look here:
http://cocan.or
h tests are
pretty much useless.
Also - Solaris 10 ...? That boat left a long time ago. You should
really be thinking about migrating to modern operating systems run by
a company with a future.
Rich.
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Grid computing):
http://www.redhat.com/mrg/
and we're doing this in partnership with some very large banks.
None of that is really specific to OCaml. In fact the banks tend to
use Java(!)
Rich.
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e but understanding frp in general [...]
Personally I've yet to read any comprehensible introduction to FRP.
I'm interested in whether FRP can be used to write Gtk interfaces with
reduced code complexity. Apparently it can, but I've no id
lightweight -
the challenge then being to organize it, making the branches
searchable, navigable and possible to merge later).
Rich.
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sting source
tarballs. And more inclusive - it should include *every* source
tarball -- as much OCaml source as possible.
Rich.
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s.
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Bug
http://caml.inria.fr/mantis/view.php?id=3866
So I think you should open a similar bug.
Rich.
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uch be for the bytecode stub.
>
> Could someone provide me with an example somewhere?
In case you still have problems, you could look at the code we
autogenerate in libguestfs, eg: ocaml/guestfs_c_actions.c. We
generate bindings for functions that have various numbers of arguments
(up to 9).
On Wed, Nov 18, 2009 at 01:54:18AM +0100, Martin Jambon wrote:
> It is my pleasure to announce the first release of cppo, an OCaml-friendly
> equivalent of the C preprocessor (cpp).
All I need now is a camlp4-powerful macro preprocessor for my C code ...
Rich.
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use manual
memory allocation, on top of which you can write a more suitable GC in
OCaml for your long-lived rarely-changing blocks (eg. one based on
reference counting). The invariants you describe above are exactly
the ones which ocaml-ancient needs.
Rich.
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_
ed representation for that.
I guess others have pointed out why this isn't so easy.
How about a syntax extension instead to turn a vector (| a, b, c |)
into { v0 = a; v1 = b; v2 = c }, and a standard type to solve the
module communication problem? I'm not sure if camlp4 will let you
define
r one of our projects,
eg. libvirt-ocaml, to see how we do it:
http://libvirt.org/sources/ocaml/
or: http://libguestfs.org/download/
Rich.
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ticular). There are only two processor architectures
that matter in the world in any practical sense, x86-64 and ARM.
Rich.
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, then:
movl 4(%ebx),%eax ; load 4 bytes of data from address %ebx + 4, put in %eax
lea 4(%ebx),%eax ; add %ebx + 4 and put that in %eax
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ith.html
I would love to see inline assembler supported by the compiler.
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Begi
; access.
Take a close look at bitstring. In all the cases where it can
*statically* determine that accesses are on byte or larger boundaries,
it does *not* do any bitfiddling but uses the most efficient, direct C
calls possible.
We really did spend a lot of time optimizing the bitmatch case.
Rich.
necessarily think bitstring is suitable here though because
you still need to read your data into a string (or fake a string on
the C heap as Olivier Andrieu mentioned). I think in this case you'd
be better off just writing this part of the code in C.
Rich.
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a series of problems I'm intending to drop camlimages
from Fedora ... unless you can assure me that an upstream release
which comprehensively fixes the problems is going to appear soon.
Rich.
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edora#Package_status
Red Hat Enterprise Linux (RHEL) 6 is around the corner, and there is
the possibility that OCaml will be available. If you are interested
in OCaml in RHEL, or in purchasing RHEL with OCaml please talk to your
account manager or contact me at: < rjones redhat com >
Rich.
end;;
[...]
> ocamlc -c Preprocessor\Preprocessor.ml
The problem you have is the above code defines a module called
Preprocessor.Preprocessor.
Omit all the [module ... = struct] and [end;;] parts, and it will
work fine.
http://ocaml-tutorial.org/the_structure_of_ocaml_programs
Ri
g a "give_me_the_type_of (ocaml_subexpression)"
function would be awesome indeed.
Rich.
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sound enough semantics for partial application of
> > constructors, since the solution of having to write (fun x -> Bar x)
> > is much simpler.
>
> Can you not just say that Bar in an expression is a function (fun x -> Bar x)?
This is what standard ML seems to do.
Rich.
--
Ah but wait, your META file has that patch incorporated already!
I don't know -- the cygwin distribution of OCaml is broken somehow.
Rich.
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rsions of findlib include the necessary
correction).
So you could try the patch above, or try a later version of findlib.
Rich.
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a bug in the META files that are supplied with
your cygwin OCaml distribution.
Rich.
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load of dynlink, so I tried
>
>ocamlfind ocamlc -package dynlink, json-static -syntax
> camlp4o -o test test.ml -linkpkg
Is there really a space in "dynlink, json-static". You'll need to try
it without the
d distribution of such tools.
This is really a packaging issue. I believe that Debian already ship
the compiled sources to OCaml as a separate package, mostly for this
reason. (Fedora doesn't, but probably we should follow Debian in this
respect).
Rich.
--
Richard Jones
Red Hat
On Wed, Sep 30, 2009 at 04:51:01PM +0200, Alain Frisch wrote:
> Richard Jones wrote:
> > let devs = {{ map [xml] with
> >| [[[_]]]
> >| [[[_]]] ->
> >[s]
> >| _ -> [] }} in
>
> The following should work:
>
> let
27; ]
[
[ ]
[ ]
]
[
[ ]
[ ]
[ ]
]
[ [ ] [ ] ]
[
[ ]
[ ]
]
[ ]
[ ]
[ [ ] ]
]
]
and what the second prerr_endline prints:
""
Rich.
--
Richard Jones
Red Hat
_
On Wed, Sep 30, 2009 at 12:57:23PM +0100, Richard Jones wrote:
> On Wed, Sep 30, 2009 at 04:05:03AM -0700, Dario Teixeira wrote:
> > Hi,
> >
> > Ocamlduce has been mentioned before in this thread, but I didn't catch
> > the reason why it has been discarded a
docu/1.2.0/Simplexmlparser.html
Thanks - but if I understand that page correctly, then isn't it
just parsing XML into a tree?
Rich.
--
Richard Jones
Red Hat
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));
My best effort, using xml-light, is around 40 lines:
http://git.et.redhat.com/?p=libguestfs.git;a=blob;f=ocaml/examples/viewer.ml;h=ef6627b1b92a4fff7d4fa1fa4aca63eeffc05ece;hb=HEAD#l322
Rich.
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Richard Jones
Red Hat
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Caml-list mailing list. Su
alain.frisch.fr/soft.html#xpath), but unfortunately this
relies on the now obsolete wlex program.
Is there a completely alternative way to do this? Better still, in 3
lines of code??
Rich.
[1] for XML doc, see: http://libvirt.org/formatdomain.html
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Richard Jones
Red Hat
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