Content of a "lightning talk" given at "La Tech Amiénoise".
The "no-slide" idea is stolen to both Josh Long, Venkat Subramaniam and André Staltz. Thanks to them.
"Imperative code is not just easy to write, it is too easy to write" https://staltz.com/its-easy-to-write-imperative.html
https://www.youtube.com/watch?v=6mTbuzafcII
https://medium.com/@roman01la/understanding-transducers-in-javascript-3500d3bd9624