Monoidal Parsing-Edward Kmett

[@gustavodemendoncafreire4005]

Wow, the 24:28 concept of holding a delta that forms a group with the container just helped me solve Advent of Code 2020 day 15! I was thinking about how to make it fast enough to be able to compute the 30,000,000th element when I remembered this idea from the talk.

[@andmal8]

Great speech