AdventOfCode 2020

Solutions to adventofcode.com/2020

Solutions (Link)

PR	Problem	Solution	Specs
PR #2	Day 1: Report Repair	src/Day01/Solution.hs	test/Day01/SolutionSpec.hs
PR #4	Day 2: Password Philosophy	src/Day02/Solution.hs	test/Day02/SolutionSpec.hs
PR #5	Day 3: Toboggan Trajectory	src/Day03/Solution.hs	test/Day03/SolutionSpec.hs
PR #6	Day 4: Passport Processing	src/Day04/Solution.hs	test/Day04/SolutionSpec.hs
PR #7	Day 5: Binary Boarding	src/Day05/Solution.hs	test/Day05/SolutionSpec.hs
PR #8	Day 6: Custom Customs	src/Day06/Solution.hs	test/Day06/SolutionSpec.hs
PR #12	Day 7: Handy Haversacks	src/Day07/Solution.hs	test/Day07/SolutionSpec.hs
PR #13	Day 8: Handheld Halting	src/Day08/Solution.hs	test/Day08/SolutionSpec.hs
PR #15	Day 9: Encoding Error	src/Day09/Solution.hs	test/Day09/SolutionSpec.hs
PR #18	Day 10: Adapter Array	src/Day10/Solution.hs	test/Day10/SolutionSpec.hs
PR #19	Day 11: Seating System	src/Day11/Solution.hs	test/Day11/SolutionSpec.hs
PR #21	Day 12: Rain Risk	src/Day12/Solution.hs	test/Day12/SolutionSpec.hs
PR #23	Day 13: Shuttle Search	src/Day13/Solution.hs	test/Day13/SolutionSpec.hs
PR #24	Day 14: Docking Data	src/Day14/Solution.hs	test/Day14/SolutionSpec.hs
PR #25	Day 15: Rambunctious Recitation	[in progress, 2 stars]	[in progress]
PR #26	Day 16: Ticket Translation	src/Day16/Solution.hs	test/Day16/SolutionSpec.hs
PR #30	Day 17: Conway Cubes	src/Day17/Solution.hs	test/Day17/SolutionSpec.hs
PR #31	Day 18: Operation Order	src/Day18/Solution.hs	test/Day18/SolutionSpec.hs
PR #32	Day 19: Monster Messages	src/Day19/Solution.hs	test/Day19/SolutionSpec.hs
PR #34	Day 20: Jurassic Jigsaw	src/Day20/Solution.hs	test/Day20/SolutionSpec.hs
PR #35	Day 21: Allergen Assessment	src/Day21/Solution.hs	test/Day21/SolutionSpec.hs
PR #38	Day 22: Crab Combat	src/Day22/Solution.hs	test/Day22/SolutionSpec.hs
PR #40	Day 23: Crab Cups	[in progress, 2 stars]	[in progress]
PR #44	Day 24: Lobby Layout	src/Day24/Solution.hs	test/Day24/SolutionSpec.hs
PR #45	Day 25: Combo Breaker	[in progress, 2 star ]	[in progress]

Run tests

$ stack test --file-watch --fast

Workflow

Start a new day Part 1

$ day 1 commit

./bin/day 1 commit Creates a workspace to solve a new day's problem.

Steps

• copies the Template directories and string replaces placeholder values
• fetches input the problem input and saves it to ./test/Day01/input.txt
• fetches the problem statement, converts it to markdown, and saves it as ./src/Day01/README.md
• updates the .cabal file
• if commit is included
  • creates a branch
  • adds and commits the new files
  • pushes the branch to origin
  • opens a pull-request

Continue to Part 2

$ readme 1

./bin/readme 1 After solving part 1, get a new README with the full problem statement including part 2.

Setup

Dependencies

• direnv - used to add project specific env variables
• yarn global add @bionikspoon/html-to-md
• yarn global add prettier
• go get github.com/ericchiang/pup
• https://hub.docker.com/ API key for Circle CI
• https://codecov.io/ project token for circle CI

Getting Started

1. Create an .envrc

   $ cp .envrc.sample .envrc

2. Add a SESSION_ID to the .envrc

   • go to https://adventofcode.com/
   • login
   • Right click -> "Inspect" -> Click the "Application" tab -> Look for "Storage -> Cookies -> https://adventofcode.com/" -> Copy the "session" value
   • Save the "session" value as SESSION_ID in .envrc

3. Enable the .envrc file

   $ direnv allow

4. Add environment variables to CircleCI

   • CODECOV_TOKEN
   • DOCKERHUB_PASSWORD
   • DOCKERHUB_USERNAME

5. Setup .hspec

   $ cp .hspec.sample .hspec