18 Aug
2008
18 Aug
'08
4:51 p.m.
It has been rare in my applications to have domain models that are subclasses of something already in the image. Honestly can't think of it happening once (though I'm sure that it has).
I can only think of one time I've ever done this, my Money object subclasses Magnitude, beyond that I've never found a reason to subclass anything but Object or another one of my own domain objects.
Ramon Leon http://onsmalltalk.com