Heh your OCaml example is why I adore Nim, and any other languages that "expression all the things!" -- even modern JavaScript is decent on this front with 'ramda' and my favourite helper library @unction: https://github.com/krainboltgreene/unction.js/blob/core/READ...

Between those two, consise readable functional JS code based entirely around expressions is simple to achieve. It's genuinely made me happy to be back in JS land