4 ms·
Do you know any situations where implementation inheritance is the best tool?
by cousin_it 10y ago
Do you know any situations where implementation inheritance is the best tool?
- biocomputation 10y agoYeah, inheritance is the best tool when I want a derived class to implement all the behavior of the super class.
- mjevans 10y agoI mentioned one such example about 6 hours before your post. As the other reply stated, when you mostly want to keep the base class but over-ride a small specific subset of what it does. E.G. The base class uses class member functions to do save/load records from a store. You want to implement a variant of that class which instead works well with a database engine you like. You can then derive a class and define JUST the storage and recall functions, and inherit everything else.
- cousin_it 10y agoInterfaces are a better tool for that case IMO. One small utility interface (save/load) and two implementations would be easier to test in isolation and wouldn't suffer from the fragile base class problem.