I don't even

1 Aug 2014 fronx View Markdown source

As of March 2020, School of Haskell has been switched to read-only mode.

So there is this browser-based IDE for programming Haskell and you can also write posts like this one with markdown and executable code snippets:

main = do
    putStrLn "Hello world and things."

That's pretty cool, I have to say.