# frozen_string_literal: true require 'ddmemoize' DDMemoize.enable_telemetry class FibFast DDMemoize.activate(self) memoized def fib(n) case n when 0 0 when 1 1 else fib(n - 1) + fib(n - 2) end end end p FibFast.new.fib(1000) DDMemoize.print_telemetry