book
dune
book | dune | |
---|---|---|
18 | 27 | |
1,160 | 1,541 | |
0.4% | 1.3% | |
2.7 | 9.9 | |
3 months ago | 1 day ago | |
OCaml | OCaml | |
GNU General Public License v3.0 or later | MIT License |
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book
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OCaml: a Rust developer's first impressions
Some of your questions might be answered in this book (free online version): https://dev.realworldocaml.org/
- Compiler Development: Rust or OCaml?
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Nix-Powered Development with OCaml
I don't think they're wrong
the Jane Street side are quite prolific with blog posts etc
as a newcomer to OCaml one of the first, and nicer-looking, intro resources you'll likely encounter is the Real World OCaml book https://dev.realworldocaml.org/ which unfortunately does everything using Base instead of the stdlib
Personally that didn't sit right to me and I prefer to use the stdlib by default (which seems fine and not in need of a wholesale replacement)
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Comparing Objective Caml and Standard ML
This is an oldie but a goodie.
OCaml has, unlike Standard ML, grown quite a lot since this page was made.
In particular, the section "Standard libraries", I'd recommend looking at:
https://dev.realworldocaml.org/
A couple of places where the comparison is outdated:
- OCaml using Base [1] allows for result-type oriented programming
- OCaml using Base uses less language magic and more module system
While there was and is truth to the distinction that SML is for scientists and OCaml is for engineers, this dichotomy is getting dated: OCaml is under active development, which means that scientists who want better tooling will choose OCaml. For example, 1ML [2] by Andreas Rossberg was built in OCaml.
[1]: https://opensource.janestreet.com/base/
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Resource recommendations for a beginner.
Real World OCaml (version 2 is finally out) is also pretty good.
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OCAML HELP!
Real World OCaml is also a good resource, geared more towards people who already have some programming experience and want a more industry/practical focused learning experience.
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Teach Yourself Programming in Ten Years
ocaml.org’s new website is packed with lots of great early intros.
most learners eventually gravitate towards Real World OCaml https://dev.realworldocaml.org/ for additional learning.
Unfortunately, the learning resources for different domains out there isn’t as highly curated or prolific as, say, rust. If you do web dev like me, it takes a bit more work to find the tools and put them together. But the language itself lends itself well to systems level programming.
Fortunately, the forum is a great help.
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Help getting started with Ocaml
In general, better read the second edition which is updated to use current Core versions. A print version was published recently.
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learning ocaml this semester.
I recommend https://dev.realworldocaml.org/ and https://cs3110.github.io/textbook/cover.html
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Functional Reactive Programming
Elm is not dead. It just prefers a slow release schedule but is still actively worked on in the background.
That said, you might want to check out OCaml for general purpose programming. Super fast compiler, great performance, can target both native and JS.
It is easier to use than Haskell due to defaulting to eager evaluation (like most languages) strategy instead of laziness and being generally more pragmatic, offering more escape hatches into the imperative world if need be. Plus great upward trajectory with lot's of cool stuff like an effects system and multi-core support coming.
Real World Ocaml is a decent resource: https://dev.realworldocaml.org/
dune
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Tagging OCaml packages
If you are using the dune build system, add the tag(s) to your dune-project file's package stanza. E.g.:
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NextJS, the App Router and ReasonReact
One way to get around this is to modify the api/dune file with (include_subdirs qualified); this means that every subdirectory of api/ can be referenced by module namespacing and we don't have to write dune files for every route (or pages) folder. However, the OCaml LSP does not like it and red squiggles will show up in the editor (although the app with still compile without errors). Trying to develop the app knowing those red squiggles cannot be vanquished would drive me nuts, so instead of using (include_subdirs qualified) I just wrote dune files for every route (and page) which gets rid of the red squiggles.
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Generating .ml test cases from a glob of text files in a directory using dune
2) Neither would having all source/targets specified, as that would entail listing them all in the dune file as wildcard rules is apparently still not a thing: https://github.com/ocaml/dune/issues/307
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Dune build
There is a small example on the dune home page: https://dune.build/
- The YAML Document from Hell
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Ask HN: Programs that saved you 100 hours? (2022 edition)
Dune (https://dune.build/) is the preeminent build tool for OCaml development. I don't love its input syntax (s-expressions), and I sometimes miss the ability to write high-level functions to reduce boilerplate (especially for unit tests), but it always gets the dependencies right, and it's fast. This is in stark contrast to some of my experiences with various other build systems, and I am super happy that the default option for OCaml build systems is so good.
- Help getting started with Ocaml
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Faster Incremental Builds with Dune 3
It's still weird because dune's own site only makes Jane Street references: https://dune.build/.
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How to print anything in OCaml
ONE of the big benefits of OCaml is its powerful REPL (also called the toplevel), the interactive command-line utility where you can load modules, type in and execute code, and see its results. The modern REPL, utop, has powerful auto-completion and integration with the build system dune, which enables productive workflows like loading an entire project's libraries in the REPL and interactively exploring them.
- Dune 3.2.0
What are some alternatives?
swift-async-algorithms - Async Algorithms for Swift
statsd-filter-proxy-rs - A filter proxy for StatsD
awesome-ocaml - A curated collection of awesome OCaml tools, frameworks, libraries and articles.
opam - opam is a source-based package manager. It supports multiple simultaneous compiler installations, flexible package constraints, and a Git-friendly development workflow.
reason - Simple, fast & type safe code that leverages the JavaScript & OCaml ecosystems
ocaml - The core OCaml system: compilers, runtime system, base libraries
learn-you-a-haskell - “Learn You a Haskell for Great Good!” by Miran Lipovača
CorrinoEngine - CorrinoEngine is an open-source project which will recreate the Emperor : Battle for Dune
ocaml-containers - A lightweight, modular standard library extension, string library, and interfaces to various libraries (unix, threads, etc.) BSD license.
domainslib - Parallel Programming over Domains
onelinerizer - Shamelessly convert any Python 2 script into a terrible single line of code
melange - A mixture of tooling combined to produce JavaScript from OCaml & Reason