Developing

To add your answers, simply open up the file for the Day you're working on, for example src/Day01.elm for the Day 1 Problem.

There are two methods in there. To solve part one, implment the method partOne. When Every answer should return a type of Answer (see src/Answer.elm). This can be Solved "answer string" for when you have a solution, or Unsolved if you haven't figured it out yet. Also, if you find a solution that just takes too long to calculate, feel free to mark it as Faked "abc" so that you know that the answer isn't being calculated from scratch each time.

{-| Calculate the answer (integer) and convert it to an Answer type (Solved String).
partOne =
    input
        |> calculateTheAnswer
        |> Answer.fromInt

{-| faked with the solution so it doesn't slow down the website or tests -}
partTwo =
    "12345"
        |> Faked

Testing

Once you've confirmed the answer to a problem, you can add a test for that answer in the tests/Example.elm file. Then if you change anything you can verify that it still returns the right answer by running the tests.

# This is the same as `yarn elm-test`
yarn test

Running

To see the output, run the elm make command below and then open the index.html.

# This is the same as `yarn elm make src/Answers.elm --output=elm.js`
yarn make

Even faster, you can run yarn launch which will open index.html for you after it has finished building.