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Ludus: A friendly, dynamic, functional language
A reference implementation of an interpreter for the Ludus programming language, using Clojure as a host language.
Ludus is part of the Thinking with Computers project, run by Scott Richmond at the University of Toronto. Ludus is our research language, which aspires to be a free translation of Logo for the 2020s.
Status
Pre-alpha, still under active development. See the ludus-spec repo for progress notes and additional documentation.
Use
- Clone this repo.
git clone https://github.com/thinking-with-computers/cludus
- Have Clojure and Leiningen installed.
- On a Mac:
brew install clojure leiningen
- On a Mac:
lein run {script}, it runs your script.- Alternately, download a binary on the releases page.
Hello, world!
Ludus is a scripting language. At current it does not have a REPL (our aim is to get interactive coding absolutely correct).
Either
"Hello, world!"
=> "Hello, world!"
Ludus scripts (and blocks) simply return their last expression; this script returns the bare string (to stdout) and exits.
Or:
print ("Hello, world!")
=> Hello, world!
=> :ok
Or, you can use a the print function, which sends a string to stdout. Because print returns the keyword :ok when it completes, that is the result of the last expression in the script--and so Ludus also prints this.
More on Ludus
Most of the (very active, somewhat messy) thinking about Ludus is housed in the ludus-spec repository.