Hi,
  I'm just trying to learn Ruby and am wondering what the proper way of
having a composite class (not a mixin).  I'd like to have one class be
an instance variable of another class.

Class X
  def myX
  End
End

Class Y
  myNest = X::new
 
  def myY
  end
end


myObject = Y::new

myObject::myNest.myX       #  <------  gives an error


What's the proper way of doing this in Ruby?  

Thanks,
S