Some solutions for Advent of Code, 2023.

The current ambitions are:

• Have some fun
• Keep pace, solve both parts of the daily puzzle on the day it is posted.
• Set a time box of max 2 hours per day.

Other self-imposed rules:

• Leave my first solutions as they where during the event (some light clean up is allowed). However, it is still allowed to add alternative solutions or implementations in different languages.
• The solution for each day should be self-contained. That is, it is OK to use extra packages for a given language, but I don't want to make my own AoC library or framework used across all days.

See my notes for a log of reflections for the daily puzzles (contains spoilers).

(Notes mostly for my future self.)

Use the scripts from https://github.com/kfl/adventofcode_utils for the daily housekeeping chores.

Remember to encrypt input.txt so that they are not put in a public repository by accident. That is:

• Use git-crypt to enable transparent file encryption in git.

  brew install git-crypt
  

• Add aoc-gitcrypt.key file (and add it to .gitignore)

• Specify that input.txt files should be encrypted in the .gitattributes file:

  # .gitattributes
  **/input.txt filter=git-crypt diff=git-crypt

• Finish setting git-crypt up (not sure these are needed, but I once saw good thing happening when I did them):

  git-crypt unlock ./aoc-gitcrypt.key
  git-crypt status -f