Concept: the use of delegation instead of inheritance in this article refers to the unreasonable use of inheritance in a class that does not have a parent-child relationship at all, and can be substituted in the form of delegation.As the following
A, object-oriented What exactly is this object? This object is not an instance of C #, C # We call an instance of a class an object, which is strictly an object in object-oriented programming implementation (OOP), object-oriented programming,
interface, inheritance, polymorphismInheritance and polymorphism are a very important part of the object-oriented development language, and if you use inheritance and polymorphism in your program, the architecture of the entire program becomes very
The definition of the policy pattern: Define the algorithm families, encapsulate each other, so that they can be replaced with each other, this pattern allows the algorithm to change independently of the customers using the algorithm. Essence:
Recommendation 103: Applications that differentiate between combinations and inheritanceThe polymorphism of inheritance is an important feature of object-oriented, but it cannot be abused in all situations. Inheritance should be used as a useful
Policy Mode Concepts
The policy pattern defines a series of algorithms, encapsulates each algorithm, and allows them to be replaced with each other. The policy pattern makes the algorithm independent of the customers who use it.
Main role
First, the PrimerThis is a very simple pattern, but it is very widely used. The simple reason is that only the inheritance relationship is used in this pattern.Due to their own shortcomings, the inheritance relationship was deducted by experts as
python polymorphic instances# Coding:utf-8"""Polymorphism (English: polymorphism), refers to object-oriented programs run, the same message may be sent to many different classes of objects,and the system can be based on the class of the object, the
A. inheritance and transmission are a feature of classes. inheritance is like the relationship between the father and the child. The son can get money from the father, which inherits the money. But now the money has become something of the son
Document directory
Gof Definition
Motivation
Key points of the decorator Mode
Gof Definition
Dynamically add some additional responsibilities to an object. The decorator mode is more flexible than the subclass generation function.
Let's take a
Document directory
Source code
Source code
Decoration mode, also known as wrapper mode. The decoration mode extends the object functions in a transparent way to the client. It is an alternative to the inheritance relationship.
Decoration mode
From http://hi.baidu.com/gezhou/item/f386e6273a90fb8f9d63d175
A good article to understand object-oriented again. To improve everyone's Object-Oriented Programming capabilities, you can often hear the word "Object-Oriented" from the developer's
2006.2.27 Li Jianzhong
How many child classes exist?
If we need to develop a tank for the game, in addition to a variety of different models of tanks, we also hope to add one or more of the following features for it in different occasions: for
Http://publish.it168.com/2005/0820/20050820006201.shtml
Most people think that the meaning of an interface is to replace multiple inheritance. As we all know, Java does not have the multi-Inheritance Mechanism like C ++, but it can implement
Http://yangyubo.com/unit-testing-guidelines/.Source: http://geosoft.no/development/unittesting.htmlTranslator (yospaly:If no detailed specification proved by practice is provided during the implementation of unit tests, it is difficult to grasp the "
I. Strategy ModeThe rule mode is intended for a group of algorithms,Encapsulate each algorithm into an independent class with a common interfaceSo that they can be replaced with each other. The policy mode allows the algorithm to change without
Read the Chinese version of objective Java (15)
Article 21: combination takes precedence over inheritanceInheritance is implementationCodePowerful means of reuse, But improper use of inheritance can lead to vulnerable software.
It is safe
1. Adapter Mode
IntentionConverts an interface of a class to another interface that the customer wants. The adapter mode enables the classes that cannot work together due to incompatibility of the interface to work together.
Preface
Blog is based on. NetAs the main melodyCommunityHowever, in its "Iceberg ",WebThe design leads the world with unique characteristics. The representative figures include,Cat ChenAh I, Ding Xue, teeth blast, Li Zhan, etc. They are
ViewArticleIndex Via http://www.cnblogs.com/seesea125/archive/2012/04/17/2453256.html
I. Object-oriented. What is this object?
This object is not an example in C #. in C #, we call an instance of a class as an object. Such an object
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