摘要：
Bob大叔提出并发扬了S.O.L.I.D五大原则，用来更好地进行面向对象编程，五大原则分别是：The Single Responsibility Principle（单一职责SRP）The Open/Closed Principle（开闭原则OCP）The Liskov Substitution Principle（里氏替换原则LSP）The Interface Segregation Principle（接口分离原则ISP）The Dependency Inversion Principle（依赖反转原则DIP）单一职责SRP:单一职责的描述如下：A class should have on 阅读全文
