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OCaml 2016

The OCaml Users and Developers Workshop: Nara, Japan, Friday 23rd September 2016.

Colocated with ICFP 2016, the day after the ML family workshop.

The OCaml Users and Developers Workshop brings together industrial users of OCaml with academics and hackers who are working on extending the language, type system and tools. Previous editions have been colocated with ICFP 2012 in Copenhagen, ICFP 2013 in Boston, ICFP 2014 in Gothenburg, ICFP 2015 in Vancouver, following the OCaml Meetings that ran until 2011.


OCaml 2016 will open with an invited talk by Damien Doligez.

The following works will be presented as 20 minute talks.

  • Conex - establishing trust into data repositories -- Abstract
    Hannes Mehnert and Louis Gesbert

  • Generic Programming in OCaml -- Abstract
    Florent Balestrieri and Michel Mauny

  • Improving the OCaml Web Stack: Motivations and Progress
    Spiridon Eliopoulos

  • Learn OCaml: An Online Learning Center for OCaml -- Abstract
    Benjamin Canou, Grégoire Henry, Çagdas Bozman and Fabrice Le Fessant

  • Lock-free programming for the masses -- Abstract
    Kc Sivaramakrishnan and Theo Laurent

  • OCaml inside: a drop-in replacement for libtls -- Abstract, Implementation
    Enguerrand Decorne, Jeremy Yallop and David Kaloper Meršinjak

  • OPAM-builder: Continuous Monitoring of OPAM Repositories -- Abstract, Build results
    Fabrice Le Fessant

  • Semantics of the Lambda intermediate language
    Pierre Chambart

  • Statistically profiling memory in OCaml -- Abstract
    Jacques-Henri Jourdan

  • Sundials/ML: interfacing with numerical solvers
    Timothy Bourke, Jun Inoue, Marc Pouzet

  • The State of the OCaml Platform: September 2016 -- Abstract
    Louis Gesbert, on behalf of the OCaml Platform team

  • Who's got your Mail? Mr. Mime! -- Abstract, Implementation
    Romain Calascibetta

The following works will be presented as posters during a dedicated poster session:

  • Inuit library: from printf to interactive user-interfaces
    Frédéric Bour

  • ocp-lint, A Plugin-based Style-Checker with Semantic Patches -- Abstract
    Çagdas Bozman, Théophane Hufschmitt, Michael Laporte and Fabrice Le Fessant

  • Partial evaluation and metaprogramming
    Pierre Chambart

Call for papers (past)


Discussions will focus on the practical aspects of OCaml programming and the nitty gritty of the tool-chain and upcoming improvements and changes. Thus, we aim to solicit talks on all aspects related to improving the use or development of the language and of its programming environment, including, for example:

  • compiler developments, new backends, runtime and architectures

  • practical type system improvements, such as (but not limited to) GADTs, first-class modules, generic programming, or dependent types

  • new library or application releases, and their design rationales

  • tools and infrastructure services, and their enhancements

  • prominent industrial uses of OCaml, or deployments in unusual situations.


It will be an informal meeting, with an online scribe report of the meeting, but no formal proceedings. Slides of presentations will be available online from the workshop homepage. The presentations will likely be recorded, and made available at a later time.

To submit a talk, please register a description of the talk (about 2 pages long) by following this link, providing a clear statement of what will be provided by the talk: the problems that are addressed, the technical solutions or methods that are proposed. If you wish to perform a demo or require any special setup, we will do our best to accommodate you.


  • Monday 20th June 2016 (any time zone): Talk proposal submission deadline
  • Monday 18th July 2016: Author notification
  • Friday 23rd September 2016: OCaml workshop

ML family workshop and post-proceedings

The ML family workshop, held on the previous day, deals with general issues of the ML-style programming and type systems, and is seen as more research-oriented. Yet there is an overlap with the OCaml workshop, which we are keen to explore, for instance by having a common session. The authors who feel their submission fits both workshops are encouraged to mention it at submission time and/or contact the Program Chairs.

There may be a combined post-conference proceedings of selected papers from the two workshops.

Program committee

  • Kenichi Asai, Ochanomizu University, Japan
  • Oleg Kiselyov, Tohoku University, Japan
  • Igor Pikovets, Ahrefs Research, USA
  • Mindy Preston, Docker, UK
  • Gabriel Scherer, Northeastern University, USA
  • Mark Shinwell, Jane Street Europe, UK (chair)
  • KC Sivaramakrishnan, University of Cambridge, UK
  • Jerome Vouillon, PPS, France
  • Jordan Walke, Facebook, USA

Please send any questions to the chair: mshinwell -at-