Dr Racket
Somewhere around Chapter 2 of the book, I got tired of flipping back and forth between emacs, mit-scheme repl in the terminal, and repl.it. So I decided to download Dr. Racket instead and work with the sicp packages available within Racket.
Ubuntu already comes with a version of Racket installed. But just to make sure we're all up to date:
- Add the Racket ppa:
sudo add-apt-repository ppa:plt/racket
- Update and install Racket:
sudo apt update && sudo apt install racket
For details on the SICP collection within Racket, see https://docs.racket-lang.org/sicp-manual/
Getting Scheme Running Locally
- install the MIT Scheme interpreter from the MIT website
- once installed, enter the REPL to test out code snippets by typing
mit-scheme - I decided I wanted to write scheme outside of the recommended Edwin or Emacs, so I wanted to know how to load definitions from a text file and then just use Atom to edit my code
- to do this, enter the mit-scheme REPL and type
(load "example.scm")to load in your definitions - note that
example.scmneeds to be in your current working directory - now any procedures you've defined in
Running Scheme on the Net
- I use repl.it as my scratch pad for testing small snippets of Scheme code