Rust isn't very FP, even if working with a borrow checker limits sharing, thus approaching the problem from a different angle, but with similar results as refer

Rust isn't very FP, even if working with a borrow checker limits sharing, thus approaching the problem from a different angle, but with similar results as referential transparency. And TypeScript doesn't have much in common with OCaml. F# is similar with OCaml, yes, but it's missing some OCaml features such as functors and row polymorphism. It also uses .NET's OOP and introduces a couple of nice features of its own like type providers. It's a cool language, especially if you want to target .NET