title: MVC / MVP / MVVM What the Heck?
body: <p>I recently worked on a .Net WPF project to build a retail point of sale system where I used the MVP pattern for the first time. It took me a little while to wrap my head around the change of approach but once I did that I thought that the concept rocked!</p>
  
  <p>My question is this: what is the distinction between MVC, MVP and MVVM? If there is a clear distinction, are there guidelines as to when you should use one pattern over another?</p>
  
  <p>If anyone can offer guidance on this, or point to article that explains the differences I'd very much appreciate it.</p>