Cover by Matthias Felleisen, Eight Students of Northeastern University, David Van Horn, Conrad Barski M.D.

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Chapter 1. (Getting Started)

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You need a Racket before you can launch a rocket, so the first thing you need to learn is how to download and install DrRacket. Once you have it on your computer, you will learn how to experiment. Racket is all about experimenting with expressions and creating your programs from these experiments. After some quick demonstrations, you’ll be ready to write a game!

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1.1 Readying Racket

Racket is a programming language. In principle, the Racket compiler is all you need to write Racket programs. You could—and die-hard Lispers would—launch the Racket compiler in an interactive mode, type in the program, and voilà, you’d have a running program. Or you’d get an error message saying that something isn’t quite right, and you’d ...

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