title: Reverse Iterator for List?
body: <p>Is there an efficient way to iterate through objects in the list in reverse order in dart?   I could use indices, but will that cause a performance hit (i.e. if <code>List&lt;E&gt;</code> is built internally using linked list)?</p>
  
  <p>Context: I'm drawing objects from back to front, but need to process them from front to back</p>
  
  <p>Ali</p>