Join the team

team.rb

module BookingExperts
  class Team
    def initialize
      @team = []
    end

    def self.build(&block)
      new.tap do |team|
        team.instance_eval(&block)
      end
    end

    def add name, role, exp, education, tools
      @team << Member.new(name, role, exp, education, tools)
    end

    def experience
      puts "Average experience of #{@team.sum(&:exp) / @team.count} years"
    end

    def technology
      puts @team.flat_map(&:tools).uniq.join(', ')
    end

    def education
      puts @team.flat_map(&:education).uniq.join(', ')
    end

    def join; puts "Join the team, send your motivation to: [email protected]"; end
  end

  class Member < Struct.new(:name, :role, :exp, :education, :tools)
  end
end

team = BookingExperts::Team.build do
  add 'Stefan',    'Back-end',       18, 'UT',     %W(Ruby Rails Postgres React Elasticsearch)
  add 'Rob',       'Back-end',       15, 'UT',     %w(Ruby Rails AWS Elasticsearch)
  add 'Gerjan',    'Back-end',       16, 'UT',     %w(Ruby Rails Postgres)
  add 'Eelco',     'Full-stack',     17, 'Saxion', %w(Ruby Rails Postgres)
  add 'Thomas',    'Full-stack',     6,  'UT',     %w(Ruby Rails React Typescript Elixir Phoenix)
  add 'Arthur',    'DevOps',         21, 'UT',     %w(Ruby Rails AWS Docker Elasticsearch Redis Postgres)
  add 'Rob',       'Back-end',       9,  'UT',     %w(Ruby)
  add 'Rein',      'Full-stack',     19, 'UT',     %w(Ruby Rails Postgres)
  add 'Feyzullah', 'Back-end',       3,  'Saxion', %w(Ruby Rails)
  add 'Mustafa',   'Product design', 5,  'UT',     %w(Sketch Illustrator)
  add 'Ruud',      'Full-stack',     11, nil,      %W(Ruby Rails React)
end

team.source_code # => https://gist.github.com/ruuts/229c91ce40ceda3fa56fb4add1a1684f
team.experience  # => Average experience of 12 years
team.technology  # => Ruby, Rails, Postgres, React, Elasticsearch, AWS, Typescript, Elixir, Phoenix, Docker, Redis, Sketch, Illustrator
team.education   # => UT, Saxion, nil
team.join        # => Send your motivation to: [email protected]