title: @property(copy) - is an entire copy being made?
body: <p>I'm getting sublayers of a CALayer with this property accessor:</p>
  
  <pre><code>// @property(copy) NSArray *sublayers
  
  NSArray* layer = mylayer.layer.sublayers;
  </code></pre>
  
  <p>Since this property uses "copy", every time I simply execute:</p>
  
  <pre><code>mylayer.layer.sublayers
  </code></pre>
  
  <p>is an entire copy of the sublayers array being made for me? If so that might be bad, because I could have one hundred+ layers, and definitely don't want to create a huge copy of them. I'm just looking to get a count and iterate through the existing layers, just a pointer to the existing layers,</p>
  
  <p>Thank you</p>