Play audio slide show -- Keyboard shortcut: 'x'  Back to notes -- Keyboard shortcut: 'u'        next -- Keyboard shortcut: 'n'  Slide program -- Keyboard shortcut: 't'      An alternative formulation of flip without use of the sugared define syntax.Lecture 4 - slide 3 : 34
Program 1
(define flip
  (lambda (f)
    (lambda (x y)
      (f y x))))


(define (flip f)
  (lambda (x y)
    (f y x)))