Answer to Tuesday's in-class exercise
-------------------------------------

;; likes-same-food?:  boa boa -> boolean
;; returns true if both boas like the same food
(define (likes-same-food? boa1 boa2)
  (string=? (boa-food boa1) (boa-food boa2)))




- write the signature/purpose for a Java method likesSameFood

  ans:  
        // does this boa like the same food as the other boa?
        boolean likesSameFood (Boa other);

- write a test method to test likesSameFood

  ans:

  // trixie and billy were examples of Boas we defined in class
  boolean testLikesSameFood(Tester t){
    return
     t.checkExpect (trixie.likesSameFood(new Boa("Joe", 12, "apples")),
                    true) &&
     t.checkExpect (trixie.likesSameFood(billy), false);
  }