The OCaml Planet RSS

When I started to play with OCaml I was kind of surprised that there was no id (identity) function that was available out-of-box (in Stdlib module, that’s auto-opened). A quick search lead me to the Fun module, which is part of the standard library and is nested under Stdlib. It was introduced in OCaml 4.08, alongside other modules such as Int, Result and Option.1 It was part of some broader efforts to slim down Stdlib and move in the direction of a more modular standard library. ↩

At Jane Street, we’ve been actively making improvements to OCaml for a long time. Over thelast few years, we’ve started to build some fairly ambitious extens...

A beginner's guide to functional programming with OCaml

These days a lot of programming languages (especially those leaning towards functional programming) offer a pipeline operator (|>), that allows you to feed some data through a “pipeline” of transformation steps.1 Here’s a trivial example in F#: Funny enough, even Ruby has a pipeline operator these days, although it’s not particularly useful there. ↩

We were present at BOBKonf 2025, as speakers and attendees! Here's a brief report on our experiences in Berlin.

Several of my colleagues and I went to FOSDEM 2025 and met many functional programming enthusiasts, sparking great conversations for next year's FOSDEM.