Re: Inheritance versus Generics

[Lionel Draghi <LioDraghi@filnet.fr>]

Craig Smith wrote:
> 
> Generics were a very power feature of Ada-83.  With the OO features
> introduced into Ada-95 (in particuliar, the tagged record and ability to
> inherit), are Generics obsolute? 
...

Clearly not, generics are even used by Ada 95 to provide certain kind of
inheritance :-)

I think this is a design issue : Inheritance and genericity have
different use,
and this justify existence of both :
- when you need to factorize common "properties" between related object,
you
should use inheritance, and build classes.
- when you need to factorize some algorythm between object possibly
without any
relation, you should use genericity.

Inheritance imply the "is a kind of" relation, Genericity do not.

D'accord ou pas? :-)

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