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7.4

Assignment 2: Racket Primer

Due: Thursday, Feb 13, 11:59PM

The goal of this assignment is to gain practice programming in Racket.

Assignment repository:

You are given a repository with a main.rkt file that contains a number of sections. In each section there are several function “stubs,” i.e. incomplete function defitions with type signatures, descriptions, and a small set of tests. Each function has a bogus (but type correct) body marked with a “TODO” comment. Your job is to replace each of these expressions with a correct implementation of the function.

The last section of problems deals with functions that operate over a representation of expressions in a lambda-calculus-like language and asks you to compute a few simple facts about the given expression.

Make sure you do not rename the file. Also make sure not to change the name or signature of any function given to you. You may add any additional functions that help you solve the overall problem you’re tackling.

Testing

You can test your code in several ways:

Note that running racket main.rkt from the command line will not run the tests.

Submitting

Pushing your local repository to github “submits” your work. We will grade the latest submission that occurs before the deadline.