Developer Shares Practical Racket and Functional Programming Cheat Sheet

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A developer published a comprehensive cheat sheet on Racket after exploring the Lisp-based language over a weekend. The guide covers core syntax rules, including prefix notation, parenthesis usage, and immutable global bindings created with define. It also explains conditional expressions, named and anonymous functions, and local variable scoping with let and let*. List operations are detailed using both traditional Lisp conventions like car and cdr and modern aliases such as first and rest. The cheat sheet concludes with higher-order functions including map, filter, foldl, and foldr, which replace traditional loops in functional programming.

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