SICP Support for Racket | Hacker News Reader

SICP Support for Racket

neilvandyke.org

48 pointssteve195 comments

This seems obvious, but it's important that you follow the directions when installing it. I tried using it a couple weeks ago, but it didn't work. Turns out the last sentence of the last step (restarting DrRacket) is important to make it work.

but what does it do? racket is a scheme, so should already work with sicp. what does this add?

There are some differences between Racket and the Scheme in SICP, for instance SICP Scheme is a little bit more "vanilla", and uses set-car!, set-cdr! instead of the set-mcar!, set-mcdr! and other mutable pairs stuff in Racket (disclaimer: I don't know Racket, I just fumble with it occasionally while reading Scheme books that use other dialects).

The best thing it adds though is full support for the picture language.

http://mitpress.mit.edu/sicp/full-text/book/book-Z-H-15.html...

You can do things like

    > (right-split rogers 4)

And get the resulting image right there in the DrRacket REPL.

fwiw, that's another package it just provides (according to what i read on the linked page): http://planet.plt-scheme.org/display.ss?package=sicp.plt&...

MIT Scheme is not standard Scheme - for example the concurrency constructs in MIT Scheme.

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