Watched this really nice intro to building a Parser / Parser Combinator from scratch: https://www.youtube.com/watch?v=N9RUqGYuGfw
Even if you have worked with a parser combinator before, it's amazing to see, how little "magic" there is, by "inventing/discovering" the underlying concepts along the way.
This also helps to build an intuition for `Applicative` and `Alternative` and shows how these abstractions can be practical and useful in a real-world scenario. I really enjoyed watching this :)
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