let factorial = (n) => n<=1 ? 1 : n * factorial(n-1)
factorial(20)
factorial.doc = "Fakultätsfunktion" 
factorial.created = "26.08.2021"
factorial
factorial(5, 10, 20)
let param = (a, b, c) => [a, b, c]
param(1)
param(1, 2, 3, 4)
let data = [10, 11, 12, 13, 14]
param(42, ...data)
let divmod = (m, n) => [Math.floor(m/n), m%n]
let [div, rest] = divmod(17, 7)
div + rest
const prefix = (pre) => (text) => pre + text
const mod = prefix("mod_")
mod("getData")