snippet.rb

class Pop
  def initialize(h={}, &block)
    options(h)
    puts "indide #{self.class} #{options.inspect}"
    instance_eval &block if block
  end
  
  def self.default_options(h={})
    @default_options ||= h
  end
  
  def options(h=nil)
    if h
      @doop = self.class.default_options.merge(h)
    else
      @doop ||= self.class.default_options
    end
  end
  
  default_options :name=>'poppy'
end

class Foo < Pop
  default_options  :name=>'fooey'
end

class Pang < Pop
  default_options  :name=>'pangy'
end


pop = Pop.new #should = 
poptart =Pop.new :name=>'Cinnamon'
foo = Foo.new #should = 'fooey'
pang = Pang.new #should == 'pangy'
puts '-------- should all be true --------'
pang.options(:color=>'purple')
p pang.options[:name]=='pangy'
pang.options(:color=>'purple', :name=>'boxcar')
p pang.options[:color] =='purple'
p pang.options == {:color=>'purple', :name => 'boxcar'}
puts (Pop.new :name=>'Cinnamon').options[:name] == 'Cinnamon'


# puts pang.doop.inspect #='purple'