I was just updating my Arch linux operating system when I was prompted to replace DrScheme with something called Racket. I was curious and said yes.

It turns out that PLT Scheme is now called Racket: http://www.racket-lang.org/

I opened up the (new?) interactive utility, which, by the way, I was cautious about when I first started messing with Scheme but now I have come to enjoy working in: Instead of DrScheme I found DrRacket.

The new Racket homepage has some short code that you call play with and so I started playing. Nice! Here is a little snippet to make a Sierpinski Triangle:

I don’t have much time now to go through the new Racket documentation but I hope — AND ASSUME — that DrRacket will work will all the examples from the book How to Design Programs. By the way, they do have the book listed in the documentation section of the Racket website.

I’ll also show here a screenshot with a small temperature converter exercise from HTDP that works no problem with Racket: