to use inheritance

Easy introduction to UML (3)-SRP cook well, let others program, uml-srpA cook can make a good dish. Maybe he graduated from New Oriental or the secret recipe of his family. It is simple, happy, and efficient for you to let him cook a table of food.

CEN Advanced Technology Training Center (www.itisedu.com) Generalization is a classification relationship between a general element and a specific element. The specific element is exactly the same as the general element, but it contains some

Decorator decoration mode: it is mainly used to dynamically add some additional responsibilities to an object. The extended function is more flexible than the subclass generation method.First go to our example: ProgramFor example Define abstract

Design principles are basic tools. applying these rules can enable yourCodeIt is more flexible, easier to maintain, and easier to expand. Basic Principles (OO design princples) Closed change encapsulate what varies. Code to an interface rather

CopyCode The Code is as follows: isadmin (); Because the master page was not used at the time, the master page cannot be used to determine the permissions in a unified manner. At that time, I was limited to my own level, the method of inheriting

This design document was written in March to attend the company's R & D summit. I was confident, but I was not shortlisted. Now I think it is useless, so I will post it and look forward to communicating with park friends. The document is a little

Agile design is designed to solve complex software and increase and change requirements in the development process. By the way, it seems that every time I say agile, I will improve my changes. Yes, I think this term is one of the important reasons

1. Can I use typedefs in C #? No, C # has no direct equivalent of the C ++ typedef. C # does allow an alias to be specified viaUsingKeyword: using IntList = System.Collections.Generic.List; But the alias only applies in the file in which it is

  1Abstract classes and interfaces cannot be directly instantiated. to instantiate an abstract class, the variable must point to the subclass object that implements all abstract methods, and the interface variable must point to the class object that

#!/usr/bin/python# Filename: inherit.py class SchoolMember:    '''Represents any school member.'''    def __init__(self, name, age):        self.name = name        self.age = age        print'(Initialized SchoolMember: %s)'% self.name     def

What is the basic object-oriented principle?Design principles are basic tools. applying these rules can enable yourCodeIt is more flexible, easier to maintain, and easier to expand. C # basic object-oriented principles 1. Compile APIs instead of

1. inheritance: Write a parent class (base class/superclass) that contains common attributes and Methods. Write a subclass (Category class/derived class) that can inherit the attributes of the parent class (extends ), it also contains its own unique

This article mainly introduces a deep understanding of the JavaScript series (26): Detailed description of the constructor mode of the design pattern. This article explains the basic usage, constructor and prototype, and can only use new? Mandatory

About the class, crossing must already have a feeling, look at the code below, please read it carefully and see if you can find something wrong? Copy CodeThe code is as follows: #!/usr/bin/env python #coding: Utf-8 Class Person:def __init__ (self,

This article mainly introduces a deep understanding of the JavaScript series (26): detailed description of the constructor mode of the design pattern. This article explains the basic usage, constructor and prototype, and can only use new? Mandatory

Chapter VI Packages Many languages specialize in providing a mechanism for naming global variables, such as Modula's Modules,java and Perl's packages,c++ namespaces. Each mechanism has different rules for the visibility of the elements declared in

General principles of design pattern adherence:1. Open-Close principle (open-closed Principle, OCP): a software entity should be developed for expansion and closed for modifications. The point is that when designing a module, the module should be

1. OriginImagine that if you want to draw a rectangle, circle, ellipse, square, we need at least 4 shape classes, but if the drawing needs to have a different color, such as red, green, blue, etc., at this time at least the following two design

Reference: http://www.cnblogs.com/beijiguangyong/archive/2010/11/15/2302807.html#_Toc281750445Http://baike.baidu.com/link?url=OhPS9yyf4pqRbfzFkEusLhNVbyEtnmuuAJCfms-26pXHfHh80zRdiVbByBUSz1Xgv3yt7eNaoyXu7h0_vHt8_KBaidu Encyclopedia on the definition

In addition to the core principles of the previous study, there are some derivative principles to master them, and you will be better oriented towards the object. Call them "extension principles".Dimitri rule: Try not to have sex with unrelated