OCaml Software Foundation Releases CC BY-SA 4.0 English Translation of Conchon-Filliâtre Textbook

The French original from CNRS-affiliated authors has been rendered into English by Urmila Nair. The site at usr.lmf.cnrs.fr/lpo/ supplies both formats plus exercise code. No prior English edition existed; the license permits derivative works and classroom redistribution without fee.

OCaml adoption metrics from ocaml.org show 1.2 million monthly downloads in 2023 with heavy use at Jane Street and INRIA. Open textbook release aligns with prior patterns where CC-BY materials on functional languages increased course adoption rates by 30-40 percent within two years, per SIGCSE proceedings 2022.

The translation fills a documented gap: English-language OCaml instruction has relied on scattered lecture notes and the 2008 Minsky et al. volume. Direct PDF availability under permissive terms reduces friction for university syllabi and self-study cohorts previously blocked by commercial pricing.

Operational effect appears in 2025 course listings: at least four European institutions list the text as primary reading. Error reporting is routed through a public Git repository, creating a measurable feedback loop absent from prior static PDFs.