Carp

WARNING! This is a research project and a lot of information here might become outdated and misleading without any explanation. Don't use it for anything important!

Update (June 26, 2017): The total rewrite is now live, if you want to look at the old version it's under the branch named "c" in this repository.

About

Carp is a small programming language designed to work well for interactive and performance sensitive use cases like games, sound synthesis and visualizations.

The key features of Carp are the following:

Automatic and deterministic memory management (no garbage collector or VM)
Inferred static types for great speed and reliability
Ownership tracking enables a functional programming style while still using mutation of cache friendly data structures under the hood
No hidden performance penalties – allocation and copying is explicit
Straight-forward integration with existing C code

Learn more

Installation - how to build the Carp compiler
The Compiler Manual - how to compile code and configure your projects
Carp Language Guide - syntax and semantics of the language
Libraries - the various libraries that come built-in to Carp
Game Example - an example of how to use SDL with Carp

The Carp REPL has built in documentation, run (help) to access it!

A Small Example

(import IO)
(import Int)
(import String)

(defn main []
  (do (println &"~ The number guessing game ~")
      (print &"Please enter a number between 1 - 99: ")
      (let [play true
            answer (random-between 1 100)]
        (while play
          (let [guess (get-line)
                num (from-string guess)]
            (if (= &guess &"q\n")
              (do
                (println &"Good bye...")
                (set! play false))
              (do
                (if (< num answer)
                  (println &"Too low.")
                  (if (> num answer)
                    (println &"Too high.")
                    (println &"Correct!")))
                (print &"Please guess again: "))))))))

To build this example, save it to a file called 'example.carp' and load it with (load "example.carp"), then execute (build) to build an executable.

Contributors

Erik Svedäng @e_svedang
Markus Gustavsson
Fyodor Shchukin
Anes Lihovac
Chris Hall
Tom Smeding
Dan Connolly
Reini Urban
Anes Lihovac
Jonas Granquist

License

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0