;; The first three lines of this file were inserted by DrScheme. They record metadata
;; about the language level of this file in a form that our tools can easily process.
#reader(lib "htdp-intermediate-reader.ss" "lang")((modname lect04b-list-template) (read-case-sensitive #t) (teachpacks ((lib "universe.ss" "teachpack" "2htdp"))) (htdp-settings #(#t constructor repeating-decimal #f #t none #f ((lib "universe.ss" "teachpack" "2htdp")))))

;; ffln : list-of-number -> ???
;;
(define (ffln a-lon)
  (cond
    [(empty? alon) ...]
    [(cons?  alon) ...(first a-lon)
                   ...(ffln (rest  a-lon))])