add the property size to CudaNdarray object to have more similar interface then numpy.ndarray

theano/sandbox/cuda/cuda_ndarray.cu

@@ -1503,6 +1503,12 @@ static PyGetSetDef CudaNdarray_getset[] = {
         NULL,
         "The dtype of the element. Now always float32",
         NULL},
+    {"size",
+        (getter)CudaNdarray_SIZE_Object,
+        NULL,
+        "Return the number of element in this objects.",
+        NULL},
+
     {NULL, NULL, NULL, NULL}  /* Sentinel */
 };
 

theano/sandbox/cuda/cuda_ndarray.cuh

@@ -286,7 +286,11 @@ CudaNdarray_SIZE(const CudaNdarray *self)
     }
     return size;
 }
-
+static PyObject * 
+CudaNdarray_SIZE_Object(const CudaNdarray *self, void *closure)
+{
+    return PyInt_FromLong(CudaNdarray_SIZE(self));
+}
 
 
 /**