[Tutor] Null Object Design Pattern Question

Tim Johnson tim at johnsons-web.com
Sun Jun 13 12:59:10 EDT 2004

I have been looking at 


which has an example of using a Null() object.

Unfortunately, I'm having a problem wrapping my brain around
the usefulness of this object compared to just using None.

Does anyone have some further examples of the 'superiority'
of this approach over *None*.

Or pointers to further documentations.


Tim Johnson <tim at johnsons-web.com>

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