Stack

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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Stack

Test and implement a Stack process.

The Stack process should store a list as state and push/2 elements onto the stack, and pop/2 elements off of the stack like so.

{:ok, pid} = Stack.start_link([])
[:one] = Stack.push(pid, :one)
[:two, :one] = Stack.push(pid, :two)
:two = Stack.pop(pid)
:one = Stack.pop(pid)
# return no value when the stack is empty
nil = Stack.pop(pid)

Implement and test the Stack module. Ensure you have at least one test each for the push/2 function and the pop/1 function.

defmodule Stack do
  use GenServer
end

defmodule StackTests do
  use ExUnit.Case
end

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 stack exercise"