Been using Crystal on a project that would've been written in basic Ruby.. productivity is amazing. And it has generics! :D <a href="https://play.crystal-lang.org/#/r/6r3e" rel="nofollow">https://play.crystal-lang.org/#/r/6r3e</a><p>How to get Crystal 0.28.0 on macOS <i>right now!</i> :<p><pre><code> brew install https://raw.githubusercontent.com/Homebrew/homebrew-core/ca8f21cd49a936bf154235b365fa23929f9f688d/Formula/crystal.rb
# or: brew upgrade https://raw.githubusercontent.com/Homebrew/homebrew-core/ca8f21cd49a936bf154235b365fa23929f9f688d/Formula/crystal.rb
# start the local playground
crystal play &; open http://127.0.0.1:8080</code></pre>