Tag: Design Pattern 2014 Utility Classes Are Evil Sep 18 2014 2012 [六大设计原则] 6. Open Closed Principle Dec 31 2012 [六大设计原则] 5. Least Knowledge Principle Dec 31 2012 [六大设计原则] 4. Interface Segrefation Principle Dec 31 2012 [六大设计原则] 3. Dependence Inversion Principle Dec 30 2012 [六大设计原则] 2. Liskov Substitution Principle Dec 29 2012 [六大设计原则] 1. Single Responsibility Principle Dec 29 2012