Let’s say I have a higher order function that repeats a function twice:
const twice = f => x => f(f(x))
Is there any way I can write a function where I input the result of an instance of evaluation of twice, and it can return f?
const find_f (twice, result) => f
I have experimented with a lot of versions but can’t seem to find a way to “extract” f from the twice function.