Awesome

AoC-rb

AoC-rb is a ruby Advent of Code command line utility. Advent of Code is a yearly programming challenge that takes place in december. It allows you to focus on solving the puzzles, not on the manual details:

• it quickly downloads the puzzles
• it bootstraps a given day, by preparing the ruby files you'll need and downloading a puzzle if necessary
• it runs a solution for the day you are working on, loads the input file and benchmark the execution time

How to use aoc-cli ?

Once you have installed the project, there are 2 main commands. The other one are utilities.

aoc boostrap YEAR DAY

aoc bootstrap is a way to get started playing a given day. It downloads the input file, creates a sample source file for that day, as well as a spec file.

Here is an example that gets started playing the first day of year 2018 : ./aoc bootstrap 2018 1 It will create the input file in the ``

aoc-cli
├── input
│   └── 2018
│       └── day-01
├── spec
│   ├── spec_helper.rb
│   └── year2018
│       └── day01_spec.rb
└── src
    └── year2018
        └── day01.rb

The src/year/2018/day01.rb is simple but it contains all you need: 2 methods, part1 and part2, that take as parameter the content of the input file, and return the expected value.

module Year2018
  class Day01
    # input is the content of the input file.
    # part1 should return the answer to the first part of that day 
    def part1(input)
      "expected_result"
    end

    def part2(input)
      nil
    end
  end
end

aoc run YEAR DAY

If you run your solution with aoc-run, aoc-cli takes care of loading the input file and measuring the execution time for you.

./aoc run 2018 1      
Result for part 1:
expected_result
(obtained in 2.1908000235271174e-05 seconds)

no result for part 2

other commands

There are 3 other commands you may want to use:

• aoc download YEAR DAY: it downloads a puzzle input file in the input directory
• aoc part2 YEAR DAY: same as aoc run, but only runs the part 1 for a given day
• aoc part2 YEAR DAY: same as aoc run, but only runs the part 2 for a given day

Installation

• clone this project
• install the dependencies by running bundle install
• login to adventofcode, and copy your session cookie. With firefox:
  • hit F12 in order to open the developper console
  • go to «Cookie»
  • Copy the «value» field of the «session» Cookie. On the screenshot, it's the part that starts with «536…»
• copy the .env.example file into .env.
• paste the cookie in the AOC_COOKIE variable. The .env file should look like this:

AOC_COOKIE="536…"
AOC_INPUT_DIRECTORY="input"

You are done ! You should now be able to download the input file by running the aoc command.