On Mar 2, 2009, at 4:09 AM, Ricardo Aráoz wrote:
> The suggested way,
> and I guess this is just a matter of personal taste, feels to me like
> over-subclassing.
That's what I meant by the VFP mindset. Because of the way that VFP
works, creating a subclass for a single instance is inefficient and
should be avoided. But Python is very different, and a class is just
another object; in fact, a class is an instance of a metaclass.
Look at some of the self-test programs at the bottom of the files in
the /ui/uiwx directory: most define particular subclasses of the main
class defined in that file, and pass the class to the test program.
Think about that in VFP terms for a second: how would you pass a class
as a parameter? You can't, and as a result a lot of programming goes
into implementing factory patterns in VFP that is trivial in Python.
-- Ed Leafe
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