[cwn] Attn: Development Editor, Latest Caml Weekly News
Alan Schmitt
alan.schmitt at polytechnique.org
Mon Oct 23 23:41:18 PDT 2006
Hello,
Here is the latest Caml Weekly News, for the week of October 17 to
24, 2006.
There won't be a CWN next week as I will be offline the whole week.
1) SQLite 3, ocaml, mac os x
2) Looking for references to usage of ocaml in data mining,
knowleadge discovery, etc
3) Un peu de pub, lacher d'hevea
4) dypgen : a generator of dynamically extensible parsers for OCaml
5) ECMAscript, continuations and ocaml
6) New Ocaml book hits shelves on Oct 23
========================================================================
1) SQLite 3, ocaml, mac os x
Archive: <http://groups.google.com/group/fa.caml/browse_thread/thread/
15063fb3c6cb1f71/33bc6645007a9f0d#33bc6645007a9f0d>
------------------------------------------------------------------------
** Kenneth Sullivan asked and Olivier Andrieu answered:
> Does anyone know of a good SQLite 3 wrapper for ocaml, in
> particular, one they have used with mac os x? Christian Szegedy's
> wrapper (<http://metamatix.org/~ocaml/ocaml_sqlite3.html>), seems to
> fit the bill. However this was tested on linux, and I had a bear
> of a time convincing it to compile on darwin and finally got "Bus
> errors" running the test code. If anyone could point me to a
> wrapper they are currently having success with on a mac, I'd
> greatly appreciate it.
I have a sqlite3 wrapper that I use in a project. I made a standalone
release if you want to try:
<http://oandrieu.nerim.net/ocaml/mlsqlite/>
<http://oandrieu.nerim.net/ocaml/mlsqlite/doc/>
NB: It's never been tested on mac AFAIK.
========================================================================
2) Looking for references to usage of ocaml in data mining,
knowleadge discovery, etc
Archive: <http://groups.google.com/group/fa.caml/browse_thread/thread/
5c7b049efe5798f1/47b8712537052bb6#47b8712537052bb6>
------------------------------------------------------------------------
** Axel Poigné asked and Markus Mottl answered:
> I look for references to usage of ocaml in Data Mining, Knowleadge
> Discovery. Inductive Logic Programming, Vector support Machines and
> related topics. I have browsed the net but entries are sparse.
> I would like to try using Ocaml in these areas and want to avoid
> double work.
You may have already found AIFAD (Automated Induction of Functions over
Algebraic Datatypes), a symbolic machine learning program, which
generalizes
induction of decision trees to structured values, and is pretty
efficient
even on large amounts of data. You can find the sources and
documentation
here:
<http://www.ocaml.info/aifad>
It's also available as a Godi-package, which makes it easier to install,
because it depends on other libraries.
We use Lacaml, a fairly complete and convenient binding to BLAS/
LAPACK, here
at Jane Street Capital for implementing numeric algorithms to analyse
very
substantial amounts of financial data. I unfortunately cannot give you
details about this work. You can get Lacaml through Godi or download it
here:
<http://www.ocaml.info/home/ocaml_sources.html#LACAML>
========================================================================
3) Un peu de pub, lacher d'hevea
Archive: <http://groups.google.com/group/fa.caml/browse_thread/thread/
dfbaea5475bd6129/2d1addaca52d506d#2d1addaca52d506d>
------------------------------------------------------------------------
** Luc Maranget announced:
J'ai la joie d'anoncer le nouveau lacher d'HEVEA.
HEVEA, version 1.09 un traducteur rapide de LaTeX vers HTML.
HEVEA traduit un sous-ensemble quasi complet de LaTeX2e
vers HTML 4.0 transitionel.
Plus d'information en <http://hevea.inria.fr/>
QUOI DE NEUF ?
Par rapport à la version précédente, il y a, entre autres
- De nouveaux packages
ifpdf, chngcntr, inputenc (encodage latins 8bits)
eurosym (hevea passe à l'euro avec un petit retard),
textcomp, longtable, supertabular.
- Plus de liberté (au fait hevea est du logiciel libre)
Un truc bizarre a disparu. On peut maintenant mettre \title
{...}
après \bgin{document} si on a envie.
- Plus de propreté
Le HTML généré est je crois, plus propre, emploi massif
des feuilles de styles, paragraphes rendus par l'élément P.
ATTENTION
Pour compiler hevea 1.09, il faut ocaml (au moins) 3.07.
<http://caml.inria.fr/ocaml/>
Une version Windows compilée est disponible, merci Ph. Viton.
<http://facweb.knowlton.ohio-state.edu/pviton/support/winport.html>
Les packagers Linux ne tarderont pas à adopter la nouvelle version.
========================================================================
4) dypgen : a generator of dynamically extensible parsers for OCaml
Archive: <http://groups.google.com/group/fa.caml/browse_thread/thread/
eb1e3a576de51176/9b616f7a0622ab50#9b616f7a0622ab50>
------------------------------------------------------------------------
** Emmanuel Onzon announced:
dypgen is a GLR parser generator for Objective Caml. It can generate
dynamically
extensible parsers.
The program is available at :
<http://perso.ens-lyon.fr/emmanuel.onzon>
Here is are two examples of extension of a small language.
This is the example included with the program.
define
list_content := expr(x) = List(x,Nil)
and list_content := expr(x);list_content(y) = List(x,y)
and expr := [] = Nil
and expr := [list_content(x)] = x
and expr := expr(x)::expr(y) = List(x,y)
in
match [1;2;3] with
| a::[b;c] -> b
| _ -> 4
define
expr := | expr(x) | = Node(Leaf,x,Leaf)
and expr := expr(x) | expr(y) | = Node(x,y,Leaf)
and expr := | expr(x) | expr(y) = Node(Leaf,x,y)
and expr := expr(x) | expr(y) | expr(z) = Node(x,y,z)
in
match Node(Leaf,3,Node(Node(Leaf,7,Leaf),5,Node(Leaf,1,Leaf))) with
| (|3|((|7|)|a|(|1|))) -> a
| _ -> 8
========================================================================
5) ECMAscript, continuations and ocaml
Archive: <http://groups.google.com/group/fa.caml/browse_thread/thread/
b507f0be3fa2ca2e/eddf3513b5fb37f2#eddf3513b5fb37f2>
------------------------------------------------------------------------
** Jacques Carette announced:
There is an interesting discussion of definite relevance to ocaml over
at LtU:
<http://lambda-the-ultimate.org/node/1784>
One of the main threads is the issue of what kind of continuations will
be 'grafted' on to ocaml for the reference implementation of ECMAscript
4. The keepers of ocaml might want to wade in to this issue before
someone else makes a 'de facto' decision as to which type of
continuations will be part of the ``language''.
========================================================================
6) New Ocaml book hits shelves on Oct 23
Archive: <http://groups.google.com/group/fa.caml/browse_thread/thread/
3d43f961f6c7a8a3/8baede483c311439#8baede483c311439>
------------------------------------------------------------------------
** Kognate announced:
There is a new Ocaml book (Practical Ocaml, published by Apress) that
will hit the shelves on Monday, Oct 23.
<http://www.apress.com/book/bookDisplay.html?bID=10146>
There is a sample chapter online, and the source code to the book is
there (well, it might not be there just yet, but it will be real soon),
too. I'm the author, so I certainly hope people find the book useful.
The book was tech edited by Richard Jones (who is very active on
several Ocaml lists and groups).
The TOC reads like this:
CHAPTER 1 Why Objective Caml (OCaml)?
CHAPTER 2 Interacting with OCaml: The Toplevel
CHAPTER 3 Syntax and Semantics
CHAPTER 4 Understanding Functions
CHAPTER 5 Practical: Creating a Simple Database
CHAPTER 6 Primitive and Composite Types
CHAPTER 7 Practical: Simple Database Reports, Exports, and Imports
CHAPTER 8 Collections
CHAPTER 9 Files and File I/O
CHAPTER 10 Exception Handling
CHAPTER 11 Practical: A URI Library
CHAPTER 12 Using Ocamldoc
CHAPTER 13 Modules and Functors
CHAPTER 14 Practical: A Spam Filter
CHAPTER 15 Practical: A Network-Aware Scoring Function
CHAPTER 16 Ocamllex and Ocamlyacc
CHAPTER 17 Practical: Complex Log File Parsing
CHAPTER 18 The Objective Part of Caml
CHAPTER 19 Digression: OCaml Is Not Pure
CHAPTER 20 Digression: Functional Programming
CHAPTER 21 Practical: Web Programming
CHAPTER 22 Practical: A Shoutcast Server
CHAPTER 23 Using Threads
CHAPTER 24 Practical: A Concurrent Web Crawler
CHAPTER 25 Interfacing with OCaml
CHAPTER 26 Practical: Time and Logging Libraries
CHAPTER 27 Processing Binary Files
CHAPTER 28 OCaml Development Tools
CHAPTER 29 Camlp4
CHAPTER 30 Conclusion
========================================================================
Using folding to read the cwn in vim 6+
------------------------------------------------------------------------
Here is a quick trick to help you read this CWN if you are viewing it
using
vim (version 6 or greater).
:set foldmethod=expr
:set foldexpr=getline(v:lnum)=~'^=\\{78}$'?'<1':1
zM
If you know of a better way, please let me know.
========================================================================
Old cwn
------------------------------------------------------------------------
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========================================================================
--
Alan Schmitt <http://alan.petitepomme.net/>
The hacker: someone who figured things out and made something cool
happen.
.O.
..O
OOO
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