问题描述
我想保持这一点。我建造了一个有两个房间的HouseA，比如 BedRoom 和 StudyRoom ，两者都来自一个名为<$ c的基类$ C>间。
BedRoom 和 StudyRoom 有一个名为 House 。此外，房屋内的任何房间只能通过父母进入任何其他房间。如果 BedRoom 必须访问 StudyRoom 的任何属性，则必须通过 House （即父母），反之亦然。
I would like to keep this one short. I build a HouseA that has two rooms, say BedRoom and StudyRoom, both deriving from a base class called Room.BedRoom and StudyRoom have a same parent called House. Also, any room in a house can access any other rooms only through the parent. If BedRoom has to access any attribute of StudyRoom, it has to go only via House (i.e. parent) and vice-versa.
HouseA ISA House
HouseA HAS BedRoom and StudyRoom.
BedRoom ISA Room
StudyRoom ISA Room
现在问题：我们说，我建立了另一个家（比如说 HouseB ），这与上面完全相同，但只做了一次改动。我不想要两个单独的房间（即 BedRoom 和 StudyRoom ），而是一个房间（<$ c） $ c> MasterRoom ）具有这两种设施。
为了代码可重用性，我可以考虑以下设计选项：
Now the Problem: Let's say, I build another home (say HouseB), which is a exactly the same as the above, but with one change. I don't want two separate rooms (i.e. BedRoom and StudyRoom), but instead a single room (MasterRoom) which has both these facilities.For the sake of code reusability, I could think of the following design options:
Option-1:
HouseB ISA House
HouseB HAS MasterRoom
MasterRoom ISA Room
这里我失去重用我为 HouseA创建的。请注意， BedRoom 和 StudyRoom 属性的能力 BedRoom 和 StudyRoom 的大部分属性需要在 MasterRoom中重新实现无论如何，从而导致代码重复。
Here I lose the ability to reuse the attributes of BedRoom and StudyRoom that I created for HouseA. Note that most of the attributes of BedRoom and StudyRoom need to be reimplemented in MasterRoom anyway, thereby resulting in code duplication.
Option-2:
HouseB ISA House
HouseB HAS MasterRoom
MasterRoom ISA Room
MasterRoom HAS LogicalBedroom
MasterRoom HAS LogicalStudyRoom
LogicalBedroom ISA BedRoom
LogicalStudyRoom ISA StudyRoom
这样，我使用组合使我可以重用我的大部分代码（我有几千行代码可以重复使用），但是问题是 BedRoom 是一个具体的类， logicalBedRoom 可能会发现某些属性不合适，可能会被强制覆盖方法他们什么都不做例如， Bedroom-> noOfSides（）= 4 和 logicalBedRoom-> noOfSides（）= ?? 。这是继承的好用吗？
This way, I use composition so that I could reuse most of my code (I have several thousand lines of code that I could reuse), but the problem is that BedRoom is a concrete class and logicalBedRoom may find certain attributes not suitable and may be forced to override methods so that they do nothing. For example, Bedroom->noOfSides() = 4 and logicalBedRoom->noOfSides() = ??. Is this a good use of inheritance?
我的实际设计是针对一个复杂的芯片，结合了两个芯片的功能（我使用了House（主板）和Room（芯片） ） 比喻）。我在Object Oriented Perl中编码，我非常感谢任何其他设计建议。
My actual design is for a complex chip that combines the functionality of two individual chips (I used House (motherboard) and Room (chip) analogy). I code in Object Oriented Perl and I would really appreciate any alternate design suggestions.
谢谢
推荐答案
为什么不使用角色来实现这个目标：
Why not use roles to achieve this:
House A has a Bedroom
Bedroom does SleepingArea
House has a Studyroom
Studyroom does ComfyArea
House B has a MasterRoom
MasterRoom does SleepingArea and ComfyArea
获得是使用。
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