New-style classes questions
skromta at gmail.com
Sun Sep 25 10:15:18 CEST 2005
I'm confused by the concepts of old-style vs new-style classes, I've read
most of the documents I found about this but it doesn't "click". Probably
because I wasn't around before 2.2.
Anyway, the reason for new style classes are to make the whole type/object
thing work better together. There are a number of new features etc.
I think my problem is when new-style classes are used, at first I thought
that all classes become new-style classes when I was using 2.4, but if I
understand things correctly I need to subclass an existing class (assuming
that this class does the same) for it to become a new-style class.
Have I understood this correctly?
If I have, then I've got the following question:
Then I could write:
class Foo( Object )
to make a new-style class, and
to make an old-style class.
What is the reason for allowing both styles? (backwards compatibility??)
When I make my own classes should they always be new-style objects or are
there reasons for using old-style object?
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