[rkido]

Example of OCaml's object system in use by the creator of OCaml: https://github.com/xavierleroy/cryptokit/blob/master/src/cry...

OCaml's object and class systems are excellent; I prefer them to just about anything else. They rarely get used for the simple reason that algebraic types, functors, and first-class modules are better suited to modeling almost any kind of domain logic.

Also, I like OCaml's extremely simple and direct syntax. I'm fine with F#'s implicit `in`, though it requires whitespace-sensitivity. I think ReasonML went in the wrong direction, cluttering it up with curly braces and ubiquitous tuple-like syntax for function arguments.

OCaml actually has excellent tooling — among the best — and some (but not many) great libraries. What it lacks most is great documentation...

[plinkplonk]

>OCaml actually has excellent tooling — among the best

I don't think even the core OCaml devs would claim this. Rust (and Java and Microsoft) toolchains are examples of excellent tooling. OCaml, not so much.

That said, the tooling situation today in OCaml is much better than it was a few years ago, which is real progress.

[rkido]

Yes and no. OCaml already has one of the fastest production compilers in the world, acceptable error messages (better than Haskell's, anyway), a great REPL (utop), a high-quality and well-documented build system (dune), a powerful package manager (opam), and a very good language server for IDE integration (merlin).

What it's sorely missing right now is higher quality documentation output. Currently, it's hard to navigate the generated documentation (e.g., no search bar), it's not held in a centralized online location, and it doesn't do a great job dealing with complex module/functor hierarchies (especially in the presence of destructive substitution).

Unfortunately, much of what I described above doesn't come out of the box. To fix this, the OCaml community is seeking to emulate Rust's cargo tool via the development of the ocaml-platform: http://ocamllabs.io/doc/platform.html

An aside: I didn't know Java had good tooling. I know it recently gained a good REPL. But what is the official package manager, and where is the centralized repository for packages?

[atombender]

I believe Maven is Java's package manager these days.

[atombender]

Thanks for the example. That's a very nice use of OO, I like it!