You probably just jest, either way fibs is not tail recursive [0], since its returning value is a list constructor, and not a call to itself. [0] : https://sta

You probably just jest, either way fibs is not tail recursive [0], since its returning value is a list constructor, and not a call to itself. [0] : https://stackoverflow.com/questions/33923/what-is-tail-recursion https://stackoverflow.com/questions/33923/what-is-tail-recur...