More With Haskell and GTK (Refactoring Our First App)

In a previous video, I created a very simple GTK app using Haskell. The app (which I named "byebye") was created in 30 minutes and I wrote it in such a way as to be as "gentle" an introduction to Haskell and GTK as I could be. Now, let's dive a bit deeper. Let's discuss functions in Haskell, especially recursive functions. And let's refactor our "byebye" app using Haskell functions.

REFERENCED: ► https://www.youtube.com/watch?v=ViW-bcNQ6Lc - First Video (Creating "byebye") ► https://gitlab.com/dwt1/byebye

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