title: Using Composition in ruby
body: <p>I'm new Ruby but been a .net dev for many a year. I want to implement composition within a couple of my model to make sure they are as loosely coupled as possible but have no idea where to start, or if this is really needed and I'm still thinking to much like a .net dev.</p>
  
  <p>Can anyone give me some pointers on where to start.</p>
  
  <p>Cheers
  Colin G</p>