Design Mode (9) --- builder mode, design mode --- Construction
I. Definition
Builder mode: separates the construction of a complex object from its representation, so that different representations can be created during the same build process.
Explanation: In the builder mode, you only need to specify the types to be constructed to obtain them, but you do not need
Builder Pattern)
Once you hear this name, you may guess one or two points. A builder simply understands that it is something to create. It is just something that the builder model creates, not something that is more complex than a hacker. It is like building a house. You need to build a foundation, build a wall, fill cement, seal the top, and tile the last wall.
1. definition of builders (builder, or generator) mode(1) Separating a complex object construct from its representation so that the same build process can create different representations.① the above mentioned " build " refers to the construction process of the algorithm (that is, the construction sequence, in the Director class), " representation " refers to the specific details of the generated parts (or called implementation, In the
Builder Builder Mode (Create-mode)The origin of builder modeSuppose you create a house facility in the game, the building is made up of several parts, and the parts are richly varied.If you use the most intuitive design method, the changes in each part of the House will lead to the re-revision of the building.Motive (motivation)In the software system, sometimes f
Flash Professional cs5 provides the workflow between flash pro and flash Builder 4.
The workflow used by the producer includes:
In flash Builder 4, compile, remove, or issue the program in the Flash pro cs5.
You can use Flash Professional to activate the event 3.0 in Flash Builder 4.
Refer to www.adobe.com/go/lrvid5303_fl_tw. Before the start
Design Mode (5) creator mode (Builder)I. Schema Definition
Builder Pattern: separates the construction of a complex object from its representation, so that different representations can be created during the same construction process.
The builder mode is used to create a complex object step by step. It allows users to build complex objects by specifying the types
The powerful functions of C ++ Builder are not covered by the author's limited introduction. If you can test it on your own, you will find that it is flexible and powerful, I believe you will be "reluctant ....
Therefore, C ++ Builder can be used for large-scale database application system development and small database management systems. C ++ Builder also provi
Builder Model Description
1. Separating the construction of a complex object from its representation allows the same creation process to be represented differently, which is called the builder pattern.2. Description in an object-oriented language, main role:
1>. Builder this interface class, defines the builder [
Mode Motive
Both in the real world and in software systems, there are complex objects that have a number of components, such as automobiles, including wheels, steering wheel, engine, and many more. For most users, it is not necessary to know the assembly details of these parts, but rather to use a complete car, which can be designed and described by the builder mode, which separates the parts from the assembly process, creating a complex object step
UI thread and Android single-thread model principles
When the application starts, the system createsMain thread).
This main thread is responsible for distributing events (including drawing events) to the UI components. In this main thread, your applications and AndroidUI components (components from the Android UI toolkit (components from the android. widget and a
Builder mode practice
Http://www.javacodegeeks.com/2013/01/the-builder-pattern-in-practice.html
Reprinted please indicate the source: http://blog.csdn.net/kingviker/article/details/27058051
I am not planning to jump into too many details of the design model, because I have already explained a lot of articles and books in detail. So I want to tell you why and when you should consider using the design pattern
Overview: Every Android application runs in a dalvik virtual machine process. When a process starts, a main thread (MainThread) is started. The main thread is responsible for processing ui-related events, therefore, the main thread is often called the UI thread. Because Android uses a single-threaded UI model, you can only operate the
Personal Understanding:
The construction of a complex object is separated from its representation, allowing the same build process to create different representations.
After searching for a number of builder models, I found that some of the builders ' goals were to encapsulate the product in different order, some of the same order of different products, the order was encapsulated in the director, and some were not encapsulated, but deferred to the
Defined(I read the book after the two version of the Chinese and English found that the builder model to understand the nine out of the box, so directly to the online search for other people's analysis, so the majority of this chapter is based on the information collected on the Internet, in addition, the code example shows that the example of this book is inappropriate, also changed, so this chapter and the )The
Problem:
If we want to write a builder class, we can write as follows:
Class Person
{
Public:
Void BuildHead ();
Void BuildBody ();
Void BuildArmLetf ();
Void BuildArmRight ();
Void BuildLegLeft ();
Void BuildLegRight ();
};
But what should we do when we want to build a thin, fat, and tall person?
Of course, we will think of defining the class of the builder above as an abstract class, and then defining t
Builder Pattern)
Once you hear this name, you may guess one or two points. The simple understanding of the builder is to create things, but the builder mode is not a simple thing, but a complicated thing. It is like building a house. You need to build a foundation, build a wall, fill cement, seal the top, and finally wall tiles.
The
definition: separates the construction of a complex object from its representation so that the same build process can create different representations.Type: Create class ModeClass Diagram:Four elements
Product class: generally is a more complex object, that is, the process of creating objects is more complex, generally there will be more code volume. In this class diagram, the product class is a concrete class, not an abstract class. In practical programming, a product class can consist
(5) Builder modedefinition: separates the construction of a complex object from its representation so that the same build process can create different representations.Type: Create class ModeClass Diagram:Four elementsL Product class: generally is a more complex object, that is, the process of creating objects is more complex, generally there will be more code volume. in this class diagram, the product class is a concrete class, not an abstract class.
Builder mode definition:Separates the construction of a complex object from its representation so that different representations can be created during the same construction process.
The builder mode is used to create complex objects step by step. It allows users to build complex objects by specifying the types and content of complex objects. the user does not know the specific internal build details. the
4.1 Related background storiesGo to the Business Hall for mobile package, there are two kinds of packages can choose:1) 20 Yuan package of 400 SMS packages;2) 30 yuan package of 600 SMS packages.And both types of packages must be set up to activate the ringtone business.4.2 Pattern DefinitionBuilder pattern, in a software system, you may face the task of creating complex objects, and if we use a single method or a single object to create it will be cumbersome, when the complex objects created ch
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