Important note: this article is outdated! Go to http://zsiciarz.github.io/24daysofrust/ for a recent version of all of 24 days of Rust articles. The blogpost here is kept as it is for historical reasons.
A few days ago the Rust subreddit got excited about the rebirth of rusti - an interactive shell for Rust. Such interpreters (sometimes called REPLs - read-eval-print loop) are the bread and butter of dynamic languages like Lisp, Python or Ruby. But that is not a requirement - as Haskell demonstrates with its GHCi, you can have a REPL for a statically typed, compiled language too.
rusti is an attempt to build such an interpreter for Rust.