title: cython: how do you create an array of cdef class
body: <p>I would like to have a cython array of a cdef class:</p>
  
  <pre><code>cdef class Child:
      cdef int i
  
      def do(self):
          self.i += 1
  
  cdef class Mother:
      cdef Child[:] array_of_child
  
      def __init__(self):
          for i in range(100):
              self.array_of_child[i] = Child()
  </code></pre>