title: How to feed a TensorArray to a TensorFlow session
body: <p>One of the inputs to my TensorFlow graph is an list of variable-length arrays (e.g. <code>[[0, 1, 2], [3, 4], [5, 6, 7, 8]</code>). To represent this, I've used TensorArray in the graph.</p>
  
  <p>However, when it comes to running the graph, I can't find a way to feed in a batch of the TensorArrays, as <code>feed_dict={ some_ta: [[0, 1, 2], [3, 4], [5, 6, 7, 8]] }</code> doesn't work.</p>
  
  <p>Is there currently any workaround that allows me to directly input TensorArrays into a session?</p>