Tally Votes

Mix.install([
  {:kino, github: "livebook-dev/kino", override: true},
  {:kino_lab, "~> 0.1.0-dev", github: "jonatanklosko/kino_lab"},
  {:vega_lite, "~> 0.1.4"},
  {:kino_vega_lite, "~> 0.1.1"},
  {:benchee, "~> 0.1"},
  {:ecto, "~> 3.7"},
  {:math, "~> 0.7.0"},
  {:faker, "~> 0.17.0"},
  {:utils, path: "#{__DIR__}/../utils"},
  {:tested_cell, git: "https://github.com/BrooklinJazz/tested_cell"}
])

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Tally Votes

In the Elixir cell below,

• Create a module VoterTally with a tally/1 function.
• The tally/1 function will accept a list of any atoms as the parameter.
• The atoms represent the votes for each party.
• Return a map with the number of votes for each party.

For example:

VoterTally.tally([:pink, :indigo, :purple, :pink])
%{pink: 2, indigo: 1, purple: 1}

defmodule VoterTally do
  def tally(votes) do
  end
end

Utils.feedback(:voter_tally, VoterTally)

Voting Power

The system changes again to allow certain individuals/groups more voting power. Votes will now come in as a keyword list with the number of votes for the tally/1 function.

VoterPower.tally([dogs: 10, dogs: 20, cats: 2])
%{dogs: 30, cats: 2}

You will also need to handle keyword list within the list.

VoterPower.tally([:dogs, :dogs, :cats, dogs: 2])
%{dogs: 4, cats: 1}

defmodule VoterPower do
  def tally(votes) do
  end
end

Utils.feedback(:voter_power, VoterPower)

Commit Your Progress

Run the following in your command line from the project folder to track and save your progress in a Git commit.

$ git add .
$ git commit -m "finish tally votes exercise"