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POHow can I inheriting from a concrete class in Perl?
 

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  1. POHow can I inheriting from a concrete class in Perl?
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    <p>Our software represents each device as a concrete class. So let's say I have a class named <code>Cpu-Version-1</code>, which is derived from a abstract baseclass called <code>Device</code>. Now, the CPU vendor wants to release the economic version of this CPU ( <code>Cpu-Version-2</code> ), which is a feature reduced version of <code>Cpu-Version-1</code> (obviously for a lower price ). 90% code of <code>Cpu-Version-2</code> is same as of <code>Cpu-Version-1</code>, but the remaining 10% code is no longer same. i.e. these are the features that have been removed in <code>Cpu-Version-2</code> and so I should no longer represent it.</p> <p>Now what would be the best way to design this class? I could inherit <code>Cpu-Version-2</code> from <code>Cpu-Version-1</code> (even though the inheritance is imperfect, since these two devices are peers). This would force me to override a lot of methods of cpu-version-1 to do nothing ( which looks ugly and somehow doesn't feel right). Also I don't think I could change the baseclass (<code>Cpu-Version-1</code> or it's base) since the code is already in production and requires lot of approvals and justification. How would you make this design decision if you were me?</p> <p>How do we make <code>Cpu-Version-2</code> as much reusable and maintainable? Is there any OOP principles that you would follow? Or is it better tradeoff to take the easy wayout and override all the non-applicable methods of <code>Cpu-Version-1</code> to do nothing? I code in object-oriented Perl.</p>
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    1. USrajachan
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    1. COI am not sure why inheritance is involved at all.
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      1. USSinan Ünür
 

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