first crack at a caching object

GPy/core/parameterization/array_core.py

@@ -50,3 +50,7 @@ class ObservableArray(ListArray, Observable):
         return self.__getitem__(slice(start, stop))
     def __setslice__(self, start, stop, val):
         return self.__setitem__(slice(start, stop), val)  
+    def __copy__(self, *args):
+        return ObservableArray(self.base.base.copy(*args))
+    def copy(self, *args):
+        return self.__copy__(*args)

GPy/core/parameterization/parameter_core.py

@@ -14,11 +14,12 @@ class Observable(object):
     _observers_ = {}
     def add_observer(self, observer, callble):
         self._observers_[observer] = callble
-        callble(self)
+        #callble(self)
     def remove_observer(self, observer):
         del self._observers_[observer]
     def _notify_observers(self):
         [callble(self) for callble in self._observers_.itervalues()]
+
         
 class Pickleable(object):
     def _getstate(self):