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jao.io | ||
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www.jeremykun.com
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| | | | | Last time we worked through some basic examples of universal properties, specifically singling out quotients, products, and coproducts. There are many many more universal properties that we will mention as we encounter them, but there is one crucial topic in category theory that we have only hinted at: functoriality. As we've repeatedly stressed, the meat of category theory is in the morphisms. One natural question one might ask is, what notion of morphism is there between categories themselves? | |
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degoes.net
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| | | | | Functional programming has a bit of jargon, but that doesn't have to stop you from understanding core concepts | |
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www.chriswarbo.net
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www.williamyaoh.com
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| | | [AI summary] A technical tutorial guides readers through deriving the State monad in Haskell from first principles to handle input/output and mutable state using pure functions. | ||
