title: How do you copy a CALayer?
body: <p>How can you make an NSArray full of multiple instances of a CALayer (all with the same frame, contents etc)?</p>
  <p>Background: CALayer takes a bit of overhead to create, so I would like to create a number of CALayers (all sharing the same properties) in the init method of a class (to be used later on in that class.)</p>