Wise and prudent use of private inheritance

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• Wise and prudent use of private inheritance (use private inheritance judicious .)

1. Wise and prudent use of private inheritance (use private inheritance judicious .)
2. Two rules inherited by private:
3. 1. the compiler will not convert a derived class to baseclass, but it can display the conversion. That is, the relationship between them is not-.
4. 2. All members and methods inherited from the base class will be changed to private attributes. That is, it only inherits the implementation and does not integrate interfaces.
5. Private inheritance means "Implement Based on something". It conflicts with compound and uses compound as much as possible.
6. Remember:
7. 1. Private inheritance means "Implement Based on something", which is generally lower than the combination level. However, this design is reasonable only when the derived class needs to access the protected member of baseclass, or when it needs to redefine the inherited virtual function. Otherwise, use compound as much as possible.
8. 2. Unlike composite, private inheritance can be used to find out the empty base optimization. This is intended for "minimal object size"ProgramLibrary developers may be important.