Sublist

Mix.install([
  {:jason, "~> 1.4"},
  {:kino, "~> 0.9", override: true},
  {:youtube, github: "brooklinjazz/youtube"},
  {:hidden_cell, github: "brooklinjazz/hidden_cell"}
])

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Sublist

We are given a list of numbers and we need to return all consecutive sublists of a given size.

iex(1)> list = [1, 1, 2, 3, 1, 4, 2]
[1, 1, 2, 3, 1, 4, 2]
iex(2)> Sublist.sublists(list, 3)
[[1, 1, 2], [1, 2, 3], [2, 3, 1], [3, 1, 4], [1, 4, 2]]

Implementation

defmodule Sublist do
  @doc ~S"""
  Returns all consecutive sublists of `list` of the given `size`.

  ## Examples

      iex> Sublist.sublists([1, 1, 2, 3, 1, 4, 2], 3)
      [[1, 1, 2], [1, 2, 3], [2, 3, 1], [3, 1, 4], [1, 4, 2]]

  """
  def sublists(list, size) do
  end
end

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Mark As Completed

file_name = Path.basename(Regex.replace(~r/#.+/, __ENV__.file, ""), ".livemd")

progress_path = __DIR__ <> "/../progress.json"
existing_progress = File.read!(progress_path) |> Jason.decode!()

default = Map.get(existing_progress, file_name, false)

form =
  Kino.Control.form(
    [
      completed: input = Kino.Input.checkbox("Mark As Completed", default: default)
    ],
    report_changes: true
  )

Task.async(fn ->
  for %{data: %{completed: completed}} <- Kino.Control.stream(form) do
    File.write!(progress_path, Jason.encode!(Map.put(existing_progress, file_name, completed)))
  end
end)

form

Commit Your Progress

Run the following in your command line from the curriculum folder to track and save your progress in a Git commit. Ensure that you do not already have undesired or unrelated changes by running git status or by checking the source control tab in Visual Studio Code.

$ git checkout solutions
$ git checkout -b sublist-exercise
$ git add .
$ git commit -m "finish sublist exercise"
$ git push origin sublist-exercise

Create a pull request from your sublist-exercise branch to your solutions branch. Please do not create a pull request to the DockYard Academy repository as this will spam our PR tracker.

DockYard Academy Students Only:

Notify your instructor by including @BrooklinJazz in your PR description to get feedback. You (or your instructor) may merge your PR into your solutions branch after review.

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