Leisure is a lazy, untyped, functional language that supports metaprogramming. It aims to be comfortable, easy to customize, and fun to use.

Here is a more complete readme and demo.

Leisure provides a convenient syntax and powerful tools to help people try things out quickly, be productive, and customize the language to suit their needs. Leisure's syntax is based on Lambda Calculus and borrows things from Haskell and other languages while still remaining very small. It also includes metaprogramming facilities to allow powerful customization.

For decades, programming has been done primarily in glorified text editors. Some great strides have been made in various IDEs, but typically the programmer is still burdened with a neverending "write, compile, debug, test, repeat" development cycle. Why do you keep settling for this when clearly we can do better?

LISP programmers know the REPL -- the command line interactive programming interface. While still heavily under development, Leisure is meant to push this envelope and provide a fully interactive, document-based development environment where your code is executed, errors show when you make them, tests execute as you write your code, and documentation is rich and interactive, as well. Functional programming is quite foreign to newcomers, but what if you could instantly view the parse tree of the code you wrote? Or specify test arguments to your function and see the results live as you make changes to your code in real time? Our goal is to show programmers there has to be a better way, and we've settled for the status quo for far too long.

If you want to get in touch, you can email me at bill dot burdick at gmail dot com.