mleszcz

class Square < Rectangle
  def set_width(width)
    @width = width
    @height = height
    some_ui_width_related_callbacks
    some_ui_height_related_callbacks
  end

  def set_height(height)
    set_width(height)

mleszcz

class AdminUser
  def initialize(settings_array)
    settings_from_array(settings_array)
  end
  # ew. dodatkowo
  def settings=(settings_array)
    settings_from_array(settings_array)
  end
  
  def settings_from_array(settings_array)

mleszcz

class Rectangle
  attr_accessor: :width, :height

  def set_width(width)
    @width = width
    some_ui_width_related_callbacks
  end

  def set_height(height)
    @height = height

mleszcz

class User
  def active?
    if self.class == User
      @settings[:status] == :active
    elsif self.class == AdminUser
      @settings[1] == :active
    end
  end
end

mleszcz

class User
  attr_accessor :settings
  
  def active?
    @settings[:status] == :active
  end
end

class AdminUser < User
end

mleszcz

class Api
  def self.recent_orders
    Order.recent
  end
end

client1 = Api.recent_orders
client2 = Api.recent_orders
client3 = Api.recent_orders

mleszcz

class Api
  def self.recent_orders
    Order.recent
  end
end

class IngeniousClientsApi
  def self.recent_orders
    Api.recent_orders.take(10)
  end

mleszcz

class Moderator
  extend Forwardable
  def_delegators :@blog_actions :edit_post
  
  def initialize(blog_actions)
    @blog_actions = blog_actions
  end
end

mleszcz

class BlogActions
  def create_post; end
  def edit_post; end
  def delete_post; end
end

class Moderator < BlogActions
end

moderator = Moderator.new

mleszcz

class OrderRepor
  attr_accessor :attributes
  
  def initialize(various_attributes)
    @attributes = various_attributes
  end
  
  def print_out
    puts "Summary title"
    yield @attributes