Actegories

ibobev 48 points 9 comments July 14, 2026
bartoszmilewski.com · View on Hacker News

Discussion Highlights (4 comments)

ultimatefan1

this has a real "a monad is a monoid in the category of endofunctors" energy to it

lyall

If you saw TFA and thought "hmmm yes, I know some of those words", then I can recommend the author's own lecture series on YouTube [0]. It's an intro to and overview of category theory aimed at programmers, with the requisite context and motivation for why anyone should care. It's long but worth the time investment IMHO. 0: http://www.youtube.com/playlist?list=PLbgaMIhjbmEnaH_LTkxLI7...

speed_spread

Uh thanks but I'm gonna stick with Scattergories for now.

xqb64

I'd like to understand how and why this stuff is useful for programmers.

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