Re: Limiting inheritance

[Ehud Lamm <mslamm@mscc.huji.ac.il>]

On Thu, 27 Jul 2000, Matthew J Heaney wrote:

|> I can make the procedres 2 different names but if I go that route, I
|> want to NOT inherit the procedure from the parent to the child. Is
|> there a way to do this?
|
|If you don't want the derived type to inherit the operation from its
|parent, then it sounds like the (parent) operation shouldn't be
|primitive for the type.
|

In such cases I'd first think hard about the inheritance relationship
between the types. 
If this is the case now, what about operations added later (during maint.
perhaps, when it is easy to forget such design issues).
Bad inheritance hierarchies are a pain, and it is very easy to arrive at
almost unworable designs.

Unless you have really good reasons (and you really know a lot about
OO/inheritance), stick to the central uses of inheritance (e.g., subtype
inheritance).

Ehud Lamm mslamm@mscc.huji.ac.il
http://purl.oclc.org/NET/ehudlamm <== My home on the web 
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