elle

# config/staging.rb
Rails.application.configure do
  config.middleware.use "::Rack::Auth::Basic" do |u, p|
    [u, p] == [ENV["BASIC_AUTH_USERNAME"], ENV["BASIC_AUTH_PASSWORD"]]
  end
end

# .env
BASIC_AUTH_USERNAME = some_value
BASIC_AUTH_PASSWORD = some_password

elle

# Ways to execute a shell script in Ruby
# Example Script - Joseph Pecoraro

cmd = "echo 'hi'" # Sample string that can be used

# 1. Kernel#` - commonly called backticks - `cmd` 
# This is like many other languages, including bash, PHP, and Perl
#  Returns the result of the shell command
#  Docs: http://ruby-doc.org/core/classes/Kernel.html#M001111

elle

class LiveCell
  TRANSITION_RULES = {
    2 => LiveCell.new,
    3 => LiveCell.new,
  }

  def next_generation(living_neighbours_count)
    TRANSITION_RULES.fetch(living_neighbours_count) { DeadCell.new }
  end
end