title: Right multiplication of a dense array with a sparse matrix
body: <p>If I have a <code>numpy.ndarray</code> <code>A</code> and a <code>scipy.sparse.csc_matrix</code> <code>B</code>, how do I take <code>A</code> dot <code>B</code>? I can do <code>B</code> dot <code>A</code> by saying <code>B.dot(A)</code>, but the other way I can only think of this:</p>
  
  <pre><code>B.T.dot(A.T).T
  </code></pre>
  
  <p>Is there a more direct method to do this? </p>