There is a cool website useful for the Scala community called Scastie. It provides a web based interface to talk about small Scala programs, and the user can select from many different versions of the compiler. The user can compile and execute the code and talk about different versions of the small code snippets using the URL like https://scastie.scala-lang.org/fWWaC8ugTsWlRp7EvmQdoQ
Anybody can edit and save the code of anybody else as long as he has the cryptic URL.
Does something like this exist for Clojure?