Advent Of Code 2021 using Clojure

Goals and quality to expect

write a solid part-1 in the attempt to get an easier part-2
write tests for the steps explained in the story
naming is hard, but don't spend too much time
commit after part-1, refactor for part-2 (tests help with that)
re-factoring things from previous days is allowed e.g. for parts no good solution came to mind but some spark of inspiration hits later ("shower thoughts")

Run the tests

# lein kaocha

Generate a new day:

Download the input for the day and put it at /tmp/input
Run ./gen.bb # where # is the day; this moves the input at the right place and creates the source and test from the templates under ./tmpl
Start the tests for the day (the gen-script outputs this): lein kaocha --watch --focus-meta :lib --focus-meta :day-##