cs19-stacker

Another implementation of HtDP Beginning Student with Abbreviations. This implementation can show the stack diagrams whenever function calls begin and return.

How to install, update, and uninstall

Please follow these instructions to install or update

1. Make sure you are in the DrRacket app.
2. Go to the menu File | Package Manager.... A window will pop up.
3. Make sure you are in Do What I Mean tab of the pop-up window.
4. Set the Package Source field to https://github.com/brownplt/cs19-stacker.git
5. Click the Show Details button.
6. Set the Dependencies Mode field to Auto.
7. Click the Install button. (If you have already installed, you will see "Update" instead of "Install".) Most buttons will grey out immediately (except the Abort Install).
8. After the color of those buttons come back, you can close the pop-up window. This usually takes less than 1 min.

To uninstall

1. Make sure you are in the DrRacket app.
2. Go to the menu File | Package Manager.... A window will pop up.
3. Make sure you are in Currently Installed tab of the pop-up window.
4. Set the Filter field to cs19-stacker.
5. Select the first result.
6. Click the Remove button. A confirmation window will pop up.
7. Click the Remove button in the confirmation window. Most buttons will grey out immediatel (except the Abort Install).
8. After the color of those buttons come back, you can close the pop-up window. This usually takes less than 1 min.

How to test whether an installation is successful?

First, make sure you are in the Racket language:

1. Make sure you are in the DrRacket app.
2. Go to the menu Language | Choose Language.... A window will pop up.
3. Select The Racket Language.
4. Click the OK button.

Run the following program in DrRacket

#lang cs19-stacker

(define x 2)
(define (add1 n)
  (+ n 1))
(add1 x)

You should see a screenshot like this.