iRust is an interactive Rust REPL, i.e. a Read Eval Print loop which lets
you type some code into a prompt and see it evaluated before your eyes:

https://github.com/tarcieri/irust

It's installable as a RubyGem. Detailed installation instructions are
provided by clicking the link.

I wrote this because I'm a REPL-lover and Rust's existing REPL is broken.
It's not meant to be a permanent REPL for Rust, but a stopgap solution for
those who want a REPL until Rust ships a working one.

Enjoy!

-- 
Tony Arcieri