Visual Haskell Debugger (part 2)

The idea from the previous article received a lot of feedback both in the form of comments to the article or on reddit or on Haskell-Cafe (though, not on a dedicated topic).

For another proof of the idea, I will draw some diagrams by hand for the following suggested pieces of code. As you will see in this article, the drawing will evolve as I will tackle with more complex examples (and there are still pieces of code that I cannot render right now).

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