Here are some of my latest thoughts on ruby… 
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💐 Making VSCode itself a Java REPL 🔁
VSCode evaluates Java code wherever it sees it, by sending it to a JShell in the background, and echos the results in a friendly way!
This is achieved with a meta-extension for VSCode that makes VSCode into a living, breathing, JS interpreter: It can execute arbitrary JS that alters VSCode on-the-fly. (Inspired by using Emacs and Lisp!)
The relevant docs show how to make a similar REPL for Python, Ruby, Clojure, Common Lisp, JavaScript, Typescript, Haskell, and of-course Java.
Life & Computing Science by Musa Al-hassy is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License