May 2017
Intermediate to advanced
590 pages
17h 18m
English
Content preview from Modern C++ Programming Cookbook
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How it works...
The NVI idiom uses the template method design pattern that allows derived classes to customize parts (that is, steps) of a base class functionality (that is, algorithm). This is done by splitting the overall algorithm into smaller parts, each of them implemented by a virtual function. The base class may provide, or not, a default implementation, and the derived classes could override them while maintaining the overall structure and meaning of the algorithm.
The core principles of the NVI idiom is that virtual functions should not be public; they should be either private or protected, in case the base class implementation could be called from a derived class. The interface of a class, the public part accessible to its clients, ...
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