Don't have Telegram yet? Try it now!
https://blog.greenroots.info/build-your-javascript-muscles-with-map-reduce-filter-and-other-array-iterators-cjyo22miw000xzss1ydfqveib#cjypa7gvl007pv4s1o7j7ujs5
Maneesh Kumar's comment to Build your JavaScript Muscles with map, reduce, filter and other array iterators