Julie made a really great decision to explain the notion of higher-kinded types at the very beginning of this course. We have to first get a solid grasp on what type constructors *are* before we study classes of them (e.g. Monad).
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In the first lesson of the Functortown course, we look at why we want functors, what they have in common, and where the word "functor" comes from.
typeclasses.com/functortown/fu
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