Those are all the same language, that are different dialects of each other. Conceptually they are all very similar, and once you know one well, you understand %90 of the other ones. Java, C & Golang are the only ones that are bit different with static typing, manual memory management (C) and language level concurrency.
Nix DSL, Haskell, OCaml, declarative UI libraries, Rx and other declarative paradigms are fairly different and do require a bit of new learning. They go way beyond functional programing basics like map and filter.
Nix DSL, Haskell, OCaml, declarative UI libraries, Rx and other declarative paradigms are fairly different and do require a bit of new learning. They go way beyond functional programing basics like map and filter.