#lang racket
(provide hello)
(define (hello [name "World"])
(string-append "Hello, " name "!"))
"Racket (formerly named PLT Scheme) is a general purpose, multi-paradigm programming language in the Lisp/Scheme family. One of its design goals is to serve as a platform for language creation, design, and implementation. The language is used in a variety of contexts such as scripting, general-purpose programming, computer science education, and research." - Wikipedia
You can learn the basics of Racket through a coule of books. Start by checking out How to Design Programs or the slightly less formal but enjoyable Realm of Racket.
The official language website can be found at http://racket-lang.org/ and the source code is at https://github.com/racket/racket/. You can find the community on twitter, email or slack.
Join the Racket trackThe reviews are incredibly helpful because they help me see things that I missed, learn about new ways and sometimes interesting discussions that can add a fun twist to maybe a simple problem.
Once you join the Racket language track, you will receive support and feedback from our team of mentors. Here are the bios of a few of the mentors of this track.
These are a few of the 33 exercises on the Racket track. You can see all the exercises here.