[disgruntledphd2]

Ocaml was (historically, at least) used by Facebook for basically all of their linter/compiler/type checker work. The hack checker was in Ocaml, as was the JS thing (flow, maybe?).

So that does seem to be a good use-case for the language.

[zdragnar]

That was why I mentioned compilers along with HFT. Rust was originally an ocaml based compiler too.

I don't build HFTs and my compilers are just for fun. None of my day jobs have ever been a situation where the smaller ecosystem and community of ocaml was offset by anything ocaml did better than the selected options like .net, Java, go, rails, C or anything else I've touched. Heck, I've written more zig for an employer than ocaml, and that was for a toy DSL engine that we never ended up using.