title: Use numba on classes?
body: <p>I can found in 0.6 numba documentation some informations about how to use <a href="http://numba.pydata.org/numba-doc/0.6/doc/extension_types.html" rel="nofollow">numba on classes</a>:</p>
  
  <pre><code>from numba import jit, void, int_, double
  
  # All methods must be given signatures
  
  @jit
  class Shrubbery(object):
      @void(int_, int_)
      def __init__(self, w, h):
          # All instance attributes must be defined in the initializer
          self.width = w
          self.height = h
  
          # Types can be explicitly specified through casts
          self.some_attr = double(1.0)
  
      @int_()
      def area(self):
          return self.width * self.height
  
      @void()
      def describe(self):
          print("This shrubbery is ", self.width,
                "by", self.height, "cubits.")
  </code></pre>
  
  <p>But i don't found in <a href="http://numba.pydata.org/numba-doc/0.16.0/index.html" rel="nofollow">0.16 documentation</a>. Is it always possible to use numba on classes ?</p>