From: Tobias Schwinger (tschwinger_at_[hidden])
Date: 2006-12-01 10:32:18
simon.sebright_at_[hidden] wrote:
> Tobias wrote:
>
>
>>Maarten Kronenburg wrote:
>>
>>>The class represents the set, and an object of that class
>>>represents an element from that set,
>>
>>Agreed, so far.
>>
>>>whether the set is employees and secretaries, or integers
>>>and unsigned
>>>integers.
>>
>>The operations on secretaries are usually a superset of the
>>operations on employees, while the operations on unsigned
>>integers are a subset of the operations on signed integers.
>>
>>Inheritance is only applicable in the former case. The flaw
>>in the latter scenario is similar to adding operations
>>specific to secretaries, trainees or managers to the
>>interface of 'employee'.
>
> Things like secretary, manager, etc. might better be considered as
> roles, an employee might have > 1 role.
>
Sure, if that's what you are trying to model.
But what does that have to do with this discussion?
Regards,
Tobias