运行以下代码时，我在结果中的某些地方不断重复#<procedure:me>，我不知道为什么。
测试：运行(match-make men women)
这是代码：
;;球拍的兼容性
(define (write-line x)
(display x)
(newline))
(define (append! a b)
(if (null? (cdr a))
(set-cdr! a b)
(append! (cdr a) b)))
; 这将启动配对程序并接受 ; 初始提议者和提议者，重置他们的状态和；将他们送至求爱程序；提案将开始
(define (match-make proposers proposees)
(send proposers 'reset)
(send proposees 'reset)
(courtship proposers proposers)
(zip-together (send proposers 'name)
(send (send proposers 'intended) 'name)))
; 每个未参与的提议者提议，直到没有 ; 更多未参与的提议者
(define (courtship unengaged-proposers proposers)
(if (null? unengaged-proposers)
(display "match-make complete")
(begin ((car unengaged-proposers) 'propose)
(courtship (currently-unengaged unengaged-proposers) proposers))))
; 获取当前未参与人数
(define (currently-unengaged list-of-people)
(filter unengaged list-of-people))
; 检查一个人是否未参与
(define (unengaged person)
(if (null? (person 'intended))
#t
#f))
; 将给定的消息发送给每个人；在给定的人员列表中
(define (send list-of-people message)
(if (null? list-of-people)
'()
(begin ((car list-of-people) message)
(send (cdr list-of-people) message))))
; 检查两个给定的人；是一对
(define (couple? person1 person2)
(if ((eq? (person1 'intended) person2) #t)
#t
#f))
; 结合两个给定的列表
(define (zip-together list1 list2)
(if (null? list1)
'()
(cons (list (car list1) (car list2))
(zip-together (cdr list1) (cdr list2)))))
; 组合每个为 true 的元素；对于给定的谓词
(define (filter pred lst)
(cond ((null? lst) '())
((pred (car lst)) (cons (car lst) (filter pred (cdr lst))))
(else (filter pred (cdr lst)))))
; 获取两个 (list1) 和另一个的列表；任何长度的列表（list2）并返回；list1 中的两者中的哪一个先出现；在列表 2 中
(define (preference list1 list2)
(write (list list1 list2))
(cond ((eq? (car list1) (car list2)) (car list1))
((eq? (cadr list1) (car list2)) (cadr list1))
(else (preference list1 (cdr list2)))))
; 创建具有某些状态的人；以及某些可以调用的消息；在那个人身上。我标记了那些；为问题 1 添加，问题 2 是；任何显示显示和换行符的地方
(define (make-person my-name)
(let ((preference-list '())
(possible-mates '())
(current-intended '()))
(define (i-like-more person1 person2) ;Problem 1
(preference (list person1 person2) preference-list)
(cond ((eq? (car (me 'loves)) person1) #t)
((eq? (car (me 'loves)) person2) #f)
(else (preference (list person1 person2) (cdr preference-list)))))
(define (me message)
(cond ((eq? message 'name) my-name)
((eq? message 'intended) current-intended)
((eq? message 'loves) preference-list)
((eq? message 'possible) possible-mates)
((eq? message 'reset)
(set! current-intended '())
(set! possible-mates preference-list)
'reset-done)
((eq? message 'load-preferences)
(lambda (plist)
(set! preference-list plist)
(set! possible-mates plist)
(set! current-intended '())
'preferences-loaded))
((eq? message 'propose)
(let ((beloved (car possible-mates)))
(begin
(set! possible-mates (cdr possible-mates))
(begin
(display (me 'name))
(display " proposed to ")
(display (beloved 'name))
(newline))
(if (eq? ((beloved 'i-love-you) me)
'i-love-you-too)
(begin
(display (me 'name))
(display " and ")
(display (beloved 'name))
(display " are engaged ")
(newline)
(set! current-intended beloved)
'we-are-engaged)
(begin
(display "no one loves me")
'no-one-loves-me)))))
((eq? message 'i-love-you) ;Problem 1
(lambda (proposer)
(cond
((null? (me 'intended))
(begin
(set! current-intended proposer)
(display (me 'intended))
(display " says i love you too")
(newline)
'i-love-you-too))
((i-like-more proposer (me 'intended))
(begin
(set! current-intended proposer)
(display (me 'intended))
(display " dumped ")
(display (me 'intended))
(newline)
(((me 'intended) 'i-changed-my-mind) me)
'i-love-you-too))
(else (begin
(display (me 'intended))
(display " rejected ")
(display (me 'name))
'buzz-off-creep)))))
((eq? message 'i-changed-my-mind)
(lambda (lost-love)
(cond ((eq? current-intended lost-love)
(set! current-intended '())
'dumped!)
(else
'there-must-be-some-misunderstanding))))
(else
(display "Bad message to a person")
(newline)
(list my-name message))))
me))
;; 这是一个测试文件
(define alan (make-person 'Alan))
(define bob (make-person 'Bob))
(define charles (make-person 'Chuck))
(define david (make-person 'Dave))
(define ernest (make-person 'Ernie))
(define franklin (make-person 'Frank))
(define agnes (make-person 'Agnes))
(define bertha (make-person 'Bertha))
(define carol (make-person 'Carol))
(define deborah (make-person 'Debbie))
(define ellen (make-person 'Ellen))
(define francine (make-person 'Fran))
((alan 'load-preferences)
(list agnes carol francine bertha deborah ellen))
((bob 'load-preferences)
(list carol francine bertha deborah agnes ellen))
((charles 'load-preferences)
(list agnes francine carol deborah bertha ellen))
((david 'load-preferences)
(list francine ellen deborah agnes carol bertha))
((ernest 'load-preferences)
(list ellen carol francine agnes deborah bertha))
((franklin 'load-preferences)
(list ellen carol francine bertha agnes deborah))
((agnes 'load-preferences)
(list charles alan bob david ernest franklin))
((bertha 'load-preferences)
(list charles alan bob david ernest franklin))
((carol 'load-preferences)
(list franklin charles bob alan ernest david))
((deborah 'load-preferences)
(list bob alan charles franklin david ernest))
((ellen 'load-preferences)
(list franklin charles bob alan ernest david))
((francine 'load-preferences)
(list alan bob charles david franklin ernest))
(define men (list alan bob charles david ernest franklin))
(define women (list agnes bertha carol deborah ellen francine))