Unfortunately, this section is not ready yet, as I lack the necessary skills in Haskell... (Volunteer contributors are welcome!)
Checking the sample code
Well, I managed to make the puzzle work, but it is most likely a rather inferior Haskell code...
Looking at the syntax
Resources to check
Before we move on to some more serious matters, let's focus on a language, which saw an enormous growth in popularity in the past 5+ years: Python!