design patterns elements of reusable object oriented software

derived class. p103(53) Do not confuse the optional inclusion with the need for inheritance. Modeling an optional inclusion into a class where inheritance can lead to flooding. p108(54) When creating an inheritance hierarchy, try creating a reusable framework, rather than a reusable component. p112(55) If you use multiple inheritance in your design, let's say yo

(that is, a method that does nothing) in a derived class. (53) Do not confuse the optional inclusion with the need for inheritance. Modeling an optional inclusion into a class where inheritance can lead to flooding. (54) When creating an inheritance hierarchy, try creating a reusable framework, rather than a reusable component. (55) If you use multiple inheritance in your

61 military rules of PHP object-oriented analysis design. (1) all data should be hidden inside the class. (2) a class user must depend on the common interfaces of the class, but the class cannot depend on its users. (3) minimize the elimination in the class protocol (1) all data should be hidden inside the class. (2) a class user must depend on the common interfa

Object-oriented design principlesBorn to support maintainability multiplexing, these principles are embedded in many design patterns, which are the guiding principles that are summarized in many design scenarios, and understand

I went home yesterday. By the way, I brought back a lot of webcast and stayed in bed for an afternoon. Because there are a lot of design patterns in the Enterprise Library, I listened to Microsoft's lecturers for an afternoon. Alas! The quality of webcast is really junk. When I heard it, I found out that I suddenly couldn't think of the four principles of object-

Document directory Advantages and disadvantages of Combination Inheritance Inheritance/combination Example 1 Inheritance/combination Example 2 Rule 1: Prioritize (object) combinations, rather than (class) Inheritance [Favor composition over inheritance] Combination1. (object) combination is a method of reusing new functions by creating an object that comb

Seven Principles of object-oriented design and seven Today we will talk about seven principles, namely: single responsibility, Lishi replacement, dimit law, dependency reversal, interface isolation, synthesis/aggregation principle, and openness-closure. 1. Open and Close principles(Open-Closed Principle, OCP) Definition:The software entity shall be open to extens

inheritance in the design, first assume that you have made a mistake. If you do not make a mistake, try to prove it. (56) as long as inheritance is used in object-oriented design, I have two questions: (1) is the derived class a special type of the thing it inherits? (2) is the base class part of the derived class? (5

overwrite the methods in the base class by using an empty method (that is, a method that does not do anything) in the derived class. P103 (53)Do not confuse optional items with the need for inheritance. Model the optional include into a class that inherits and can cause flooding. P108 (54)When creating an inheritance layer, try to create reusable frameworks instead of

software development efficiency, improving software quality, saving development costs, and improving system maintainability. The purpose of object-oriented design reuse is to enable maintainability reuse. In the object-oriented de