Racket

Racket is

• a programming language—a dialect of Lisp and a descendant of Scheme;
• a family of programming languages—variants of Racket, and more; or
• a set of tools—for using a family of programming languages.

References

• Racket Guide
• Quick - an introduction to Racket with pictures
• How to design programs

A text-book that introduces to programming and computing using Racket.

Some posts on Racket:

• Why Racket? Why Lisp?

Nine reasons of why to learn Lisp and Racket

• Why language-oriented programming? Why Racket?

Install

On ubuntu:

sudo add-apt-repository ppa:plt/racket
sudo apt update
sudo apt install racket

To start DrRacket:

drracket