Into the icy maw of category theory starting with Monoids! In reality we find out it's not actually all that scary and there are some really fantastic things that we gain by understanding these basic categorical concepts.

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Show Notes:

Haskell Diagrams library

http://projects.haskell.org/diagrams/doc/quickstart.html

https://vimeo.com/84104226

Chris Wilson pointed out that Haskell's Typeclassopedia has a nice chart of the relationship between Haskell's implementation of many categorical structures: https://wiki.haskell.org/wikiupload/d/df/Typeclassopedia-diagram.png