Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing


Hey guys! Can anyone tell me why this code doesn't work? I've just started using assignment. My "mover" procedure is supposed to add 1 to the variable "position" each time it's called (each calling using the newly set position). It sets it right the first time but then it doesn't changes with further calls. (define (make-mover position) (define north (begin (set! position (+ position 1)) position)) (define (dispatch direction) (cond ((eq? direction 'north) north))) dispatch) (define position1 0) (define mover ((make-mover position1) 'north))

  • one year ago
  • one year ago

  • This Question is Open
  1. Ante
    Best Response
    You've already chosen the best response.
    Medals 0

    It's weird because it works fine if "mover" has an argument like distance.

    • one year ago
  2. Ante
    Best Response
    You've already chosen the best response.
    Medals 0

    Note: it looks a bit odd because a few parts have just been deleted...

    • one year ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...


  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.