Install rust and just.
Login to AoC and retrieve your session cookie. Add it to .env as.
This allows us to fetch puzzle input.
SESSION="..."
Run tests, benchmark, fetch input, run puzzle:
# Scaffold new example file for Day 2
just scaffold 2
# Watch: recompile & retest Day 2 solution after every change
just watch 2
# Run tests for Day 2
just test 2
# Download puzzle input for day 2 (requires setting SESSION)
just fetch 2
# Run benchmarks for Day 2
just bench 2
# Run Day 2, Part 1 using the downloaded input
just run 2 1
# Run Day 2, Part 2 using the downloaded input
just run 1 2