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OCaml's module language is the perfect fit for agentic programming

Write interfaces first, statically type check the design, then hand each module to an agent one at a time. OCaml's module language makes this a natural workflow for future formal methods too.

09 Oct 2026

Anil Madhavapeddy's Blog

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What if writing tests was a joyful experience?

At Jane Street we use a pattern/library called “expect tests” thatmakes test-writing feel like a REPL session, or like exploratoryprogramming in a Jupyter no...

09 Jan 2023

Jane Street Tech Blog

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Real World OCaml Book Giveaway!

Real World OCaml is a fantastic book on OCaml and functional programming – a great resource for beginners and experienced users alike. At…

14 Oct 2022

Tarides

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OCaml from the Very Beginning now free in HTML and PDF formats

Thanks to a grant from the OCaml Software Foundation ( ocaml-sf.org ), I am able to release my 2013 book OCaml from the Very Beginning free-of-charge in the existing PDF format, and in a new HTML format: https://johnwhitington.net/ocamlfromtheverybeginning/ The book continues to be available in

18 Feb 2022

OCaml Book

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"More OCaml" updated to support OCaml 4.06 immutable strings

OCaml 4.06 has, by default, immutable strings. This necessitates some changes to "More OCaml" ("OCaml from the Very Beginning" is unaffected). The paper and kindle books (on Amazon), as well as the PDF e-book here, have been updated, together with the online resources. 

14 Oct 2017

OCaml Book

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Reprinting of "OCaml from the Very Beginning"

Owing to the print-on-demand process we're using, it's simple to update the book to fix the few errata which have been pointed out by kind readers since publication. The new text is now live on Amazon , the Kindle Store , and our website .  To update the Kindle copy, go to "Manage

15 Oct 2013

OCaml Book

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OCaml tutorial videos now available

I've made a few little tutorial videos to go with the book. Just seven for now, covering the first four chapters, but more to come: Evaluating an expression True and false Making decisions Names and functions Patterns Lists Take and drop Appending two lists They're not really a substitute

27 Sep 2013

OCaml Book

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