chibi model

Big talk design model: simple factory model; big talk design model factory Chapter 1: code error-free Optimization-simple factory Mode Create a computing class Operation first Operation. h file @interface Operation : NSObject@property(nonatomic,assign)double numberA;@property(nonatomic,assign)double numberB;@end Operation. m file @implementation Operation @end

Package COM. demo_type;/*** @ author ybnew * Singleton * Application Scenario: Some objects only need one. For example, the role of Emperor: ensure that only one */public class Singleton exists for an instance in the entire application {// 1. privatize the constructor and do not allow external users to directly create the object private Singleton () {}// 2. create a unique instance of a class by yourself // 3. set it to static (if it is set to private, more encapsulation) Private Static Single

24-day design model --------- intermediary model, design model --------- Original works of Lin bingwen Evankaka. Reprinted please indicate the source http://blog.csdn.net/evankakaI. intermediary Mode 1. Definition An intermediary object is used to encapsulate a series of object interactions. The intermediary makes the objects do not need to be explicitly referenc

24-day design model-strategy model, 24-day Design Model Original works of Lin bingwen Evankaka. Reprinted please indicate the source http://blog.csdn.net/evankakaI. Stragegy Pattern 1. Introduction The Strategy Mode is also called the rule mode. It encapsulates a series of algorithms and defines an abstract algorithm interface for all algorithms, all algorithms a

("ID card verified successfully, can be boarded"); A } - Else{ -Alert ("Sorry, ID verification failed!") "); the } - } - Else{ -Alert ("Non-privileged user! "); + } - } + //Pro. Train (); Boarding Success A at varProobj =NewPerson1 (); - //alert (pro.isprototypeof (proobj)); -Proobj.idcard = "007"; -alert (Pro.idcard);//the value of the instance object is not modified -Proobj.train ();//Logon Failure - DeleteProobj.idcard;//Delete the value of an attribute inProobj.train ();//L

(According to the msdn webcast courses) This is a behavior-oriented design model that is widely used. Objects may often need different typesAlgorithm, But if the change is frequent, the type will become very fragile. As shown inCubeTake, take different cross sections, then its area calculation method will be different, need to use different algorithms. So, how can we design Algorithms Dynamically without changing the method during runtime? Deco

find a lot of problems, board rules need to build an object? Does the user interface need to build an object? Or when a property, the user is using abstract class description or entity class, the chessboard? Do you use form as a user interface? FOM program and how to design? Wait a minute..... And so we sweat the bite to finish. The next day the manager spoke. We need to add a stool to the design. That's not easy, then build a stool class, class stool. good. Who is to use the stool? Where do y

Tags: size reference theory maintenance using LAN E-r graph feature Database1. Conceptual model After understanding the user's needs, the user's business areas of work, after analysis and summary, refined to describe the user's business needs some concepts of things. such as the sales business "customer" and "order", there is "goods", "salesman". The main thing is to extract the concepts in the system (can not include attributes at this time, only ent

The Model-View-controller (Model-View-controller, MVC) mode organizes your software into three distinct roles: The model encapsulates your application data, application processes, and business logic. View obtains data from the model and formats the data for display. Controller ControlProgramProcess, recei

In terms of software testing, the V model is the most widely known model, although many experienced testers are still not familiar with the V model or other models. The V model has existed for a long time and has some common characteristics with the waterfall development model