; ! CSC104 Winter 2020 —Exercise #2 — Print out and fill in by hand, then hand in to the TA at the start of your quiz. !
; UTorID (login ID) : ; Surname : ; Given Name :
; ! Part A. Show all the following steps.
;Youdonotneedtoincludethe “!Steps!”,“○”,nor“•”punctuationthatDrRacketshowswhenusing step.
; Include ALL the underlining of sub-expressions that will change.
;InDrRacket,the step operationstartsbycopyingtheexpressiongivento step sothatitcanaddtheunderlining ; for that initial expression, but you may save some effort by adding the initial underlining directly to the original
; expression inside (step ⋯ ) rather than recopying that expression.
(step (map tall (list )))
(step (map triangle (list 30 10 20)))
(step (map text-join (list “ant” “bear” “ox”)))
(step (map function? (list “ant” #true list flip )))
(step (map text? (list text-length “ant” scale
(step (map list? (list “ant” list #false – 25)))
(step (map binary? (list list? list length)))
25)))
(step (map – (map text-length (list “ant” “bear” “ox”))))
(step (map flip (map above (list ))))
(step (map clockwise (map text->image (list “ant” “bear” “ox”))))
(step (map + (map width (map wide (map solid-circle (list 30 10 20))))))
; ! Part B. Assume the following definitions have been entered/run …
(define (a b) (turn b))
(define (b c) (scale-width c 2))
(define (f c) (oval c 15))
(define (g e) (+ e 10))
(define (h f) (* f f))
(define (i g) (text-join “-” g))
(define (j g) (text-join g g “|”))
(define (c b) (turn b 45))
(define (d a) (scale-height
(define (e h) (above h
a))
))
;…andshowallthefollowingsteps(withthesameguidelinesasdescribedinPartA) …
(step (a 90))
(step (b (c )))
(step (map d (list 3 1 2)))
(step (map e (list )))
(step (map f (map g (list 0 20 10))))
(step (map square (map h (list 5 3 4))))
(step (map text-length (map i (map j (list “o” “xx”)))))