First, Builder Model IntroductionBuilder mode: separates a complex build from its presentation, allowing the same build process to create different representations. [Construction and presentation separation, different representations of construction]If the construction of an object is complex, it takes a lot of steps. You can use the Builder mode to separate the two steps of building objects and assembling
implemented differently, so that the entire system can be implemented differently.
Speaking of this, I think of the abstract factory model. How are the two similar ?? Well, let's talk about why it is called the construction model.
In the abstract factory model, from an abstract factory to a specific factory to a series of specific products, the user is connected with the factory to get the product, while in the construction model, from an abstract builder
(For translation errors or exceptions, please advise)
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The builder model is for the construction of complex objects, such as a product with multiple parts, each of which can be produced separately, and this time it is possible to construct each part of the product by builder and then director the final product assembly.
Characteristics:
1, the Division of labor more clearly, the formation and construction of separate, to better control the production of produ
Objective
During the Android development, I found that many An Zhouyuan code used design patterns, more commonly used adapter patterns (various adapter), Builder Mode (Alert dialog build), and so on. Although we know a lot about design patterns, in this aspect of applying design patterns, it feels like many people are lacking in this. So this article is a deep understanding of the builder model in Android.
Android updates the UI and androidui in non-UI threads
When updating the UI (Program Interface) in a non-UI thread, the following exception occurs:
So how can we refine the UI in a non-UI thread?
There are many methods. Here we m
IOS 7 UI Transition Guide-Before getting started (iOS 7 UI Transition Guide-Before You Start)
IOS 7 UI Transition Guide
Preparing for Transition
Before You Start
Scoping the Project
Supporting iOS 6
Updating the UI
Appearance and Behavior
Bars and Bar Buttons
Conten
Builder mode (builder) can separate parts from their assembly process and create a complex object step by step.You only need to specify the type of the complex object to obtain the object, without having to know the specific structure details.
Under what circumstances will the builder mode be used?In my personal understanding, when we create an object, we need lo
Windows CE operating system is a powerful tool for embedded system development. Windows CE platform Builder provides all development and debugging tools for creating, cropping, and configuring Windows CE. Profound Understanding and flexible use of the platform builder configuration file. Reg,. bib,. dat,. DB is the key to customizing the Windows CE operating system suitable for the target platform. This doc
Optimizing Your UI -- use Hierarchy Viewer to optimize the UI and hierarchyviewer
Sometimes the layout of your application may make the application run slowly. To help debug layout problems, the Android SDK provides Hierachy Viewer and lint tools.
The Hierarchy Viewer application allows you to debug and optimize the UI. It provides a visual display of the Layout
Android Beginner, just started not realize that the update UI in Android can only be used UI thread, write a download thread, update Progessbar in the thread, and display the download progress with TextViewpublic void listenprogress () {New Thread (New Runnable () {@Overridepublic void Run () {while (Progress progress = msgservice.getprogress ();Progressbar.setprogress (progress);Text.settext ("Download" +
Use Handler to update the UI in the Child thread and the handler thread to update the ui
Android requires that you only update the UI in the main thread. If you update the UI in the Child thread, the following error is prompted: only the original thread that created a view hierachy can touch its view (Only the original
Cocoais a native compilation environment on Mac OS x systems. He contains two frames, which are actually a series of libraries, Foundation and AppKit.On your iphone and other handheld devices, use one of his subcategories-Cocoa Touch. The Foundation framework he supports is the same as cocoa, but his user graphics library is Uikit, which is specially designed for handheld devices and provides an interface on your device.Cocoa Touch and Cocoa a distinct difference is that Cocoa touch does not sup
7. Builder, prototype, and Singleton of the Creation Mode ----- big talk design mode and the prototype of the two figures of the westward journey
I. Builder ModeSeparates the construction of a complex object from its representation, so that different representations can be created during the same construction process.The benefit of the builder mode is to separate
Builder Pattern In Practice)
I will not describe this mode in detail, because a large number of articles or books have already analyzed this mode in detail. I will tell you why and when you should consider using it. It is worth mentioning that there are some differences between this model and the four-person book of design patterns (design patterns: the basis for reusable object-oriented software. The generator mode introduced in the help of four peo
This article continues to introduce the builder model of the 23 design pattern series.Definition: Builder mode: Separates the construction of a complex object from its representation so that the same build process can create different representations. Practical scope 1, when the algorithm to create complex objects should be independent of the object's components and the way they are assembled.2, when the co
First, Introduction
Since the advent of Ruby on Rails last year, interest in the Ruby programming language seems to have grown steadily. Rails has helped people see what Ruby is: A very decent, easy to learn and fun-filled language, even for the development of industrial-grade applications. Ruby is now almost the same age as Java, but until now it has attracted people's attention.
Ruby, of course, has caught my eye! Lately, I've found myself using Ruby more than Java, because it helps me encod
For the creation of a method, you can imagine that each class you write is called once Initialize (). This name reminds us that we should make this call first before using the object. Unfortunately, this also means that the user must remember to invoke the method. In Java, the designer of a class can guarantee that each object will be properly initialized because it provides a special method called a builder. If a class has a
Builder Mode C + + implementation 1 definitionSeparating the construction of a complex object from his presentation allows the same build process to create different representationsNote: In the template method, the function of the parent class calling the subclass method is implemented, and the selective invocation of the method is implemented by the hooks. But the order of the whole is fixed, what to do first and what to do without the blocking by ho
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