Chain 2 task https://gist.github.com/Irostovsky/c7d069e9edd71511723587707fff355e

gistfile1.txt

class Developer
  def initialize
    @chain = []
  end

  def are
    @chain << "I"
    self
  end

  def crazy
    @chain << 'am crazy'
    self
  end

  def and &block
    @chain << 'and'
    instance_eval &block if block_given?
    self
  end

  def your arg=nil
    @chain << (arg || 'my')
    self
  end

  def skill_level arg
    @chain << "skill level is #{arg}"
    self
  end

  def is arg
    arg
  end

  def in arg
    @chain << "in #{arg}"
  end

  def not
    @chain << 'am not'
    self
  end

  def love *_
    @chain << "love #{_.join(', ')}"
  end

  def want *_
    @chain << "want #{_.join(', ')}"
  end

  def if arg, &block
    @chain << "if I pass"
    instance_eval &block if block_given?
  end

  def well
    "well"
  end

  def work arg
    "I work #{arg}"
  end

  def hello
    p @chain.join ' '
  end
end

class DataBase
  def find_developer(platform: :ruby, region: :london)
    all_developers(platform, region).select do |you|
      you.are.crazy
         .and { your.skill_level is :high }
         .and { you.are.not.in :plumbee }
         .and { you.love 'ruby', 'rails' }
         .and { want 'fun', 'money' }
         .and.if you do
            your work well
          end
    end
  end

private
  def all_developers(*_)
    [Developer.new]
  end
end


DataBase.new.find_developer(platform: '123').each(&:hello)

$ "I am crazy and my skill level is high and I am not in plumbee and love ruby, rails and want fun, money and if I pass I work well"