This is the third of my Engineering Notebook columns for The C++ Report. The articles that will appear in this column will focus on the use of C++ and OOD, and will address issues of software engineering.
依赖倒置原则（Dependence Inversion Principle，简称DIP）这个名字看着有点别扭，“依赖”还“倒置”，这到底是什么意思？依赖倒置原则的原始定义是：High level modules should not depend upon low level modules. Both should depend upon abstractions. Abstractions should not depend upon details. Details should dep
