Rehabilitating packs using functors and recursivity, part 2.
This blog post and the previous one about functor packs covers two RFCs currently developed by OCamlPro and Jane Street. We previously introduced functor packs, a new feature adding the possiblity to compile packs as functors, allowing the user to implement functors as multiple source files or even parameterized libraries. In this blog post, we … Rehabilitating packs using functors and recursivity, part 2.
Rehabilitating Packs using Functors and Recursivity, part 1.
OCamlPro has a long history of dedicated efforts to support the development of the OCaml compiler, through sponsorship or direct contributions from Flambda Team. An important one is the Flambda intermediate representation designed for optimizations, and in the future its next iteration Flambda 2. This work is funded by JaneStreet. Packs in the OCaml ecosystem … Rehabilitating Packs using Functors and Recursivity, part 1.
A Dune Love story: From Liquidity to Love
By OCamlPro & Origin Labs Writing smart contacts may often be a burdensome task, as you need to learn a new language for each blockchain you target. In the Dune Network team, we are willing to provide as many possibilities as possible for developers to thrive in an accessible and secure framework. There are two … A Dune Love story: From Liquidity to Love
[Interview] Sylvain Conchon joins OCamlPro
On April 2020, Sylvain Conchon joined the OCamlPro team as our Chief Scientific Officer on Formal Methods. Sylvain is a professor at University Paris-Saclay, he has also been teaching OCaml in universities for about 20 years. He is the co-author of Apprendre à programmer avec OCaml with Jean-Christophe Filliâtre, a book for students in French … [Interview] Sylvain Conchon joins OCamlPro
A Solidity parser in OCaml with Menhir
This article is cross-posted on Origin Labs’ Dune Network blog. We are happy to announce the first release of our Solidity parser, written in OCaml using Menhir. This is a joint effort with Origin Labs, the company dedicated to blockchain challenges, to implement a full interpreter for the Solidity language directly in a blockchain. Solidity … A Solidity parser in OCaml with Menhir
opam 2.0.7 release
We are pleased to announce the minor release of opam 2.0.7. This new version contains backported small fixes: – Escape Windows paths on manpages [#4129 @AltGr @rjbou]– Fix opam installer opam file [#4058 @rjbou]– Fix various warnings [#4132 @rjbou @AltGr – fix #4100]– Fix dune 2.5.0 promote-install-files duplication [#4132 @rjbou] Note: To homogenise macOS name … opam 2.0.7 release
opam 2.1.0 alpha is here!
We are happy to announce the alpha release of Opam 2.1.0, one year and a half after Opam 2.0.0. Many new features made it in (see the complete changelog or release note for the details), but here are a few highlights of this release. Release highlights The two following features have been around for a … opam 2.1.0 alpha is here!
An in-depth Look at OCaml’s new “Best-fit” Garbage Collector Strategy
The Garbage Collector probably is OCaml’s greatest unsung hero. Its pragmatic approach allows us to allocate without much fear of efficiency loss. In a way, the fact that most OCaml hackers know little about it is a good sign: you want a runtime to gracefully do its job without having to mind it all the … An in-depth Look at OCaml’s new “Best-fit” Garbage Collector Strategy
New version of TryOCaml in beta!
We are happy to announce that our venerable “TryOCaml” service is being retired and replaced by a new, modern version based upon our work on Learn-OCaml. → Try it here ← The new interface provides an editor panel besides the familiar top-level, error and warning positions highlighting, the latest OCaml release (4.10.0), local storage of … New version of TryOCaml in beta!
Alt-Ergo Users’ Club Annual Meeting
The second annual meeting of the Alt-Ergo Users’ Club was held in mid-February. Our annual meeting is the perfect place to review each partner’s needs regarding Alt-Ergo. This year, we had the pleasure of receiving our partners to discuss the roadmap for future Alt-Ergo developments and enhancements. Alt-Ergo is an automatic mathematical formula checker, jointly … Alt-Ergo Users’ Club Annual Meeting
2019 at OCamlPro
OCamlPro was created to help OCaml and formal methods spread into the industry. We grew from 1 to 21 engineers, still strongly sharing this ambitious goal! The year 2019 at OCamlPro was very lively, with fantastic accomplishments all along! Let’s quickly review the past years’ works, first in the world of OCaml (flambda2 & compiler optimisations, … 2019 at OCamlPro
opam 2.0.6 release
We are pleased to announce the minor release of opam 2.0.6. This new version contains some small backported fixes and build update: Don’t remove git cache objects that may be used [#3831 @AltGr] Don’t include .gitattributes in index.tar.gz [#3873 @dra27] Update FAQ uri [#3941 @dra27] Lock: add warning in case of missing locked file [#3939 … opam 2.0.6 release
The Opam 2.0 cheatsheet, with a new theme!
Earlier, we dusted-off our Language and Stdlib cheatsheets, for teachers and students. With more time, we managed to design an Opam 2.0 cheat-sheet we are proud of. It is organized into two pages: The everyday average Opam use: Installation, Configuration, Switches, Allowed URL formats, Packages, Exploring, Package pinning, Working with local pins, Sharing a dev … The Opam 2.0 cheatsheet, with a new theme!
OCaml expert and beginner training by OCamlPro (in French): Nov. 5-6 & 7-8
In our endeavour to encourage professional programmers to understand and use OCaml, OCamlPro will be giving two training sessions, in French, in our Paris offices: OCaml Beginner course for professional programmers (5-6 Nov) OCaml Expertise (7-8 Nov). The “Expert” OCaml course is for already experienced OCaml programmers to better understand advanced type system possibilities (objects, … OCaml expert and beginner training by OCamlPro (in French): Nov. 5-6 & 7-8
A look back on OCaml since 2011
Updated Cheat Sheets: OCaml Language and OCaml Standard Library
In 2011, we shared several cheat sheets for OCaml. Cheat sheets are helpful to refer to, as an overview of the documentation when you are programming, especially when you’re starting in a new language. They are meant to be printed and pinned on your wall, or to be kept in handy on a spare screen. … Updated Cheat Sheets: OCaml Language and OCaml Standard Library
OCamlPro’s compiler team work update
The OCaml compiler team at OCamlPro is happy to present some of the work recently done jointly with JaneStreet’s team. A lot of work has been done towards a new framework for optimizations in the compiler, called Flambda2, aiming at solving the shortcomings that became apparent in the Flambda optimization framework (see below for more … OCamlPro’s compiler team work update
opam 2.0.5 release
We are pleased to announce the minor release of opam 2.0.5. This new version contains build update and small fixes: Bump src_ext Dune to 1.6.3, allows compilation with OCaml 4.08.0. [#3887 @dra27] Support Dune 1.7.0 and later [#3888 @dra27 – fix #3870] Bump the ocaml_mccs lib-ext, to include latest changes [#3896 @AltGr] Fix cppo detection … opam 2.0.5 release
The Alt-Ergo SMT Solver’s results in the SMT-COMP 2019
The results of the SMT-COMP 2019 were released a few days ago at the SMT whorkshop during the 22nd SAT conference. We were glad to participate in this competition for the second year in a row, especially as Alt-Ergo now supports the SMT-LIB 2 standard. Alt-Ergo is an open-source SAT-solver maintained and distributed by OCamlPro … The Alt-Ergo SMT Solver’s results in the SMT-COMP 2019
Blockchains @ OCamlPro: an Overview
OCamlPro started working on blockchains in 2014, when Arthur Breitman came to us with an initial idea to develop the Tezos ledger. The idea was very challenging with a lot of innovations. So, we collaborated with him to write a specification, and to turn the specification into OCaml code. Since then, we continually improved our skills … Blockchains @ OCamlPro: an Overview
opam 2.0.4 release
We are pleased to announce the release of opam 2.0.4. This new version contains some backported fixes: Sandboxing on macOS: considering the possibility that TMPDIR is unset [#3597 @herbelin – fix #3576] display: Fix opam config var display, aligned on opam config list [#3723 @rjbou – rel. #3717] pin: update source of (version) pinned directory … opam 2.0.4 release
Release : Liquidity version 1.0 !
Nous sommes fiers d’annoncer la release de la première version majeure de Liquidity, le langage de smart contracts et son outillage. Parmi les fonctions phares : multiples points d’entrée, système de contrats modulaire, polymorphisme et inférence de type, syntaxe ReasonML pour une plus grande adoption, etc. Voir http://ocamlpro.com/2019/03/08/announcing-liquidity-version-1-0/
Announcing Liquidity version 1.0
Liquidity version 1.0 We are pleased to announce the release of the first major version of the Liquidity smart-contract language and associated tools. Some of the highlights of this version are detailed below. Multiple Entry Points In the previous versions of Liquidity, smart contracts were limited to a single entry point (named main). But traditionally … Announcing Liquidity version 1.0
Techelson, a test execution engine for Michelson
We are pleased to announce the first release of Techelson, available here. Techelson is a Test Execution Engine for Michelson. It aims at testing functional properties of Michelson smart contracts. Make sure to check the user documentation to get a sense of Techelson’s workflow and features. For Liquidity programmers interested in Techelson, take a look at … Techelson, a test execution engine for Michelson
Signing Data for Smart Contracts
Smart contracts calls already provide a built-in authentication mechanism as transactions (i.e. call operations) are cryptographically signed by the sender of the transaction. This is a guarantee on which programs can rely. However, sometimes you may want more involved or flexible authentication schemes. The ones that rely on signature validity checking can be implemented in … Signing Data for Smart Contracts
What’s new for Alt-Ergo in 2018? Here is a recap!
After the hard work done on the integration of floating-point arithmetic reasoning two years ago, 2018 is the year of polymorphic SMT2 support and efficient SAT solving for Alt-Ergo. In this post, we recap the main novelties last year, and we announce the first Alt-Ergo Users’ Club meeting. An SMT2 front-end with prenex polymorphism As … What’s new for Alt-Ergo in 2018? Here is a recap!
Improving Tezos Storage : Gitlab branch for testers
This article is the third post of a series of posts on improving Tezos storage. In our previous post, we announced the availability of a docker image for beta testers, wanting to test our storage and garbage collector. Today, we are glad to announce that we rebased our code on the latest version of mainnet-staging, … Improving Tezos Storage : Gitlab branch for testers
Improving Tezos Storage : update and beta-testing
In a previous post, we presented some work that we did to improve the quantity of storage used by the Tezos node. Our post generated a lot of comments, in which upcoming features such as garbage collection and pruning were introduced. It also motivated us to keep working on this (hot) topic, and we present … Improving Tezos Storage : update and beta-testing
Tezos and OCamlPro
A reflection on the new year… Today, Tezos is a global network and an open source project with developers spanning over five continents. In the inception of this project, the French company OCamlPro which, to this day, stills develops numerous projects around Tezos, played a particularly important role. Indeed, they were the first home of … Tezos and OCamlPro