Ocsigen Server

Ocsigen Js_of_ocaml 1.1 has been released. It contains several bugfixes and a binding for WebGL (3D graphics, for compatible browsers).

We are happy to announce release 2.1 of Ocsigen Eliom. With Eliom, you can implement client-server Web applications fully in OCaml. Client parts, delimited by a syntax extension, are automatically extracted from ... [More] the application source code and compiled to Javascript using the Js_of_ocaml compiler. Eliom also provides very powerful tools to implement classical Web sites, and makes it possible to mix usual Web interactions with advanced client side features. Links: Main changes in this version Eliom project's page Ocsigen tutorial The example of the tutorial Ocsigen project Vincent Balat [for the Ocsigen team] [Less]

Version 2.2 of the OCaml Web framework Ocsigen Eliom has just been released. Ocsigen Eliom makes it possible to write client/server Web applications fully in OCaml. This release is mainly a simplification of the module structure. An update ... [More] of Js_of_ocaml, Server and TyXML has also been released. More information and download from http://ocsigen.org. The main features of the Ocsigen suite are: Powerful mechanisms to implement traditional Web interaction very easily (links, forms, bookmarks, back button ...). A compiler from OCaml to Javascript to write the client side parts of your programs in OCaml. Integrated client/server programming in one single program, with automatic communication between server and client. Validation of HTML at compile time. Powerful session mechanism Persistant client side programs: you can mix client side features with traditional Web interaction. The program does not stop when you press a link! The Ocsigen framework combines many software projects (all open source), that can be used independently: Ocsigen server: an extensible Web server Eliom: a framework for Web programming in OCaml Js_of_ocaml: a compiler from OCaml bytecode to Javascript Lwt: a cooperative threading library Macaque: a library for type safe database queries O'Closure: a binding for the Google closure widget library etc. The full list of our projects is available here. Links: Main changes in this version The full changelog A map of Eliom's modules Eliom project's page Ocsigen tutorial The example of the tutorial Ocsigen project [Less]

The Ocsigen cheatsheet is available here. It summarizes the main notions you need to remember when writing an application with Eliom and the structure of modules. Keep it within reach while coding! Writing a client server Web application ... [More] with Eliom is not difficult: The powerful service identification mechanism makes straightforward to program traditional Web interaction (links, forms, back button, bookmarks). It provides a fine control on the shape of your URLs, and makes possible to create dynamically new services dedicated to one user. Session data is saved on server side in a special kind of references with limited scope (whose value is different for each browser). And it is also possible to limit the scope to one tab of a browser, or to group together several browser session (for example all the sessions for one user). Eliom makes possible to write client-server Web applications in one piece of code. As you have only one program, the communication between the browser and the server is very easy: for example you can just use server side variables in your client code! This makes possible to write complex distributed programs in very few lines of code. Eliom applications are fully compatible with traditional Web interaction: the client side program does not stop when you navigate on the Web site! More information on Ocsigen's Web site. [Less]

A short HOWTO on binding JS libraries for Js_of_ocaml is available here. To get more frequent annoucements about Ocsigen, follow us on Twitter, Google+, or Facebook.

[Announcement for the french speaking Ocsigen Day dedicated to OCaml programmers. December 14 at IRILL. English version below] JFLO’12 Journée Francophone de Leçons sur Ocsigen — Développement d'applications Web en OCaml Nous organisons ... [More] une journée didactique autour d'Ocsigen dédiée aux programmeurs OCaml. Cette journée aura lieu le 14 décembre à l'IRILL (cf infos pratiques plus bas). Vous êtes invités à vous inscrire en ici : Inscription Au programme, des cours et tutoriels sur les principaux composants du projet Ocsigen : Programmation concurrente avec Lwt ; Programmation côté client avec le compilateur Js_of_ocaml ; Programmation d'applications Web client-server avec Eliom. Informations pratiques : LIEU : Salle ORANGE, 5e étage, Inria, 23, avenue d'Italie,75013 Paris DATE : Vendredi 14 Décembre de 10h00 à 18h00. les cours seront en français ; il est fortement conseillé de venir muni de son ordinateur portable ; si possible avec une version récente d'Eliom installée. To get more frequent annoucements about Ocsigen, follow us on Twitter, Google+, or Facebook. [Less]

I'm happy to announce release 1.3 of Js_of_ocaml, a compiler from OCaml bytecode to Javascript. This release is compatible with OCaml 4.x. It adds WebSocket bindings and fixes a number of bugs. Links Project home page Download Get source ... [More] code: darcs get http://ocsigen.org/darcs/js_of_ocaml/ Documentation Changes Features/Changes Runtime and toplevel updates to support OCaml 4.0 Add WebSocket bindings Added -debuginfo option to output source code location information (patch by Kensuke Matsuzaki) Dom_html: added change, input and hashChange event bindings Bugfixes Fix array and string blitting with overlapping regions Url module: fix encoding of '+' Library: use 'this' instead of 'window' for better portability Dom_html: fix creation of elements with type or name attribute under IE 9 Compiler: small fix to bytecode parsing that could result in incorrect generated code Dom_html: fix mouse wheel event bindings Dom: fix the type of item methods Deriving_json: tail-recursive serialisation of lists (by Hugo Heuzard) Deriving_json: fix parsing of float arrays and polymorphic variants (by Hugo Heuzard) -- Jérôme Vouillon To get more frequent annoucements about Ocsigen, follow us on Twitter, Google+, or Facebook. [Less]

we are celebrating Ada's birthday by bringing out a major update of Eliom - the advanced framework for client/server web applications in OCaml - and some minor updates for Ocsigenserver and Tyxml. Here is a list of major new features (and ... [More] short code snippets can be found at the end of this email): The tightest integration of client value within the server code ever made possible in a major statically typed programming language [1] Easy access to top-level server values - and (Lwt-)functions - from within the client code [2] Access to other users' states of Eliom references Improved support of Eliom's source files in the compilation tools eliom{c,opt,dep} A new tool, eliom-destillery, for creating basic projects fast & easy The manual, a cheat-sheet, a comprehensive tutorial, and the API-documentation of the various Ocsigen projects are available on http://ocsigen.org. The probably simplest and most generic way to install Eliom is by using OPAM. But also Debian packages are already available (in experimental, thanks Stéphane!), Gentoo-ebuilds are on their way, the Ocsigen-bundle is still at hand, and the archives can be found at http://ocsigen.org/eliom/install. And maybe you may want to become social with us on Twitter Google + Facebook Enjoy! -- The Ocsigen-team [1] {server{ (* This marks server-side code *) let value_history_on_client = {ref string{ ref [] }} (* A client value within the server code *) let _ = My_app.register_service ~path ~get_params (fun value () -> (* Push the GET parameter to the client's history a side effect *) ignore {unit{ %value_history_on_client := %value :: ! %value_history_on_client }}; Lwt.return html) }} [2] {server{ let f = server_function Json.t [Less]

A beta version of Besport is available for testing. Besport is a social network developed using Ocsigen Eliom in California. Besport helps you connect and share sport with the world. Links: Besport A video presenting Besport

[Reposting here the message posted on the Ocsigen list in January] Small report on the activity of the Ocsigen project in 2013 and forecasts for 2014. In 2013, Ocsigen has grown a lot, with 5 new projects: Goji: an OCaml bindings ... [More] generator for JS libraries Ojwidgets: native OCaml widgets for js_of_ocaml Eliom-widgets: client-server widgets for Eliom Ojquery: a binding for JQuery, JQuery mobile, and JQuery UI Eliom Base App: A higher level library for Eliom and a template for Eliom distillery for building applications with user management (registration, pre- registration, activation links) in 5 seconds. These projects are still in development and will probably be released in 2014. In the next few weeks, we will release new major versions of Js_of_ocaml and Eliom, which will include many contributions from besport.com. Many thanks to them, and to all other contributors! Among new features: A first version of Eliom mobile (writing mobile applications with Eliom and Apache Cordova) Reactive DOM (automatic update of the user interface using React) Reduction of the size of the JS generated by Js_of_ocaml A few surprises are also coming in the next few weeks. Keep in touch! [Less]