Hey folks; here's the repo for a talk I gave about comonads at Monadic Party 2019!
You can find the Slides Here; and all the code used in examples (of varying quality and completeness) here
You can set it up to run the examples like so:
git clone git@github.com:ChrisPenner/comonads-by-example.git
cd comonads-by-example && stack build