摘要：SOLID 软件设计原则InitialStands for (acronym)ConceptSSRPSingle responsibility principle The notion that an object should have only a single responsibility. OOCPOpen/closed principle The notion that “software entities … should be open for extension, but closed for modification”. LLSPLiskov substitution pri 阅读全文

摘要：来个绘图经典的例子吧。基类是Shape，子类是Circle，Triangle等等。肯定有人写过这样的代码：enum SHAPE_DEFINE{CIRCLE, TRIANGLE, RECTANGLE };someFunction(){ SHAPE_DEFINE shape_variable; ……Shape * shap; switch(shape_variable) { case CIRCLE: shape = new Circle; break; case TRIANGLE: shape = new Trigangle; break; ..... } //do something with 阅读全文