Hi,

I am familiar with the concept of nesting classes and modules within another module and grouping them in a namespace. What is the idea / purpose behind

1. Nesting classes within another class

class A
  class B
    def method_B
      ...
    end
  end
end

2.Nesting modules within another class

class A
     module c
       def method_c
         ...
       end
     end
   end

thanks, ash