implementation class for warehousing should be written on the infrastructure layer.Domain Services: A domain service that should be written in the domain service method when the business rules that are processed span two (and more) entities.Domain event: Domain events that can trigger domain events when certain situations occur in the domain layer, and capture and process them where appropriate.Unit of work: working unit, a design pattern that maintains a list of business objects that have been
Questions about the front-end separation model
At this stage of work mixed together, front-end write a good demo to the background rendering data, once the bug, debugging time-consuming and laborious, so, urgent need to separate work, search on the internet for a long time, is generally the SPA mode and node mode
Spa mode uses cross-domain requests to troubleshoot data acquisition issues. But not conducive
Server-Side rendering is a hot topic for client applications. Unfortunately, this is not an easy task, especially for those without node. JS Environment Development.I have released two libraries to make PHP rendering possible from the server. Spatie/server-side-rendering and spatie/laravel-server-side-rendering are suitable for laravel applications.Let's take a closer look at some of the concept of server-side rendering, weigh the pros and cons, and then follow the first rule to create a server-
() #取出来/, show other valuesList sequence ActionsInsert at last edge of arrayL = [123, ' abc ', 1.23]L.append (' ni ')L.extend ([up])L.insert (1, ' hello ') #在一的位置插入To delete a value in an arrayL.remove (123) #删除的时候要指定数值L.pop (2) #python中的数组是从0 1 2 3 in this orderDel L[1] #删除第一位Ascending order of arraysm = [' 2 ', ' 3 ', ' 4 ', ' 1 ']M.sort ()Descending arrangementm = [' 2 ', ' 3 ', ' 4 ', ' 1 ']M.reverse ()Array nestingA =[[1,2,3],[4,5,6],[7,8,9]]M[0][2] #结果输出3, reading the 2nd value in the fir
The frame assumption under the backbone
Backbone is used to develop spa (aka single page application) environments. You may want to know what these are. Simply put, spa is a Web application that loads a page (index.html or app.html), and the entire application is routed through custom events, custom URL handles, and asynchronous HTTP retrievals, storing resources to the client, which avoids repeated loadin
This program records
Introduced
Domain Layer
Application Layer
Infrastructure Layer
Web Layer
SPA MPA
Frameworks/libraries
Other
IntroducedIn order to reduce complexity and improve the reusability of code, adopting a layered architecture is a widely accepted technique.ABP follows domain driven Design, where there are 4 base tiers in DDD.
Presentation (presentation layer): Reference App
backstage, the front-end engineer status is a step further
AngularJS: A good tool to do single Page application
Mobile Web Development: The popularity of smartphones allows mobile traffic to gradually overtake PC-side
JavaScript Memory Management: Spa long-running requires attention to memory leak issues
High Performance JavaScript (Build Faster Web application Interfaces)
Best practices to speeding up Your Web Site: Important Ski
domain layer, the entity object should not be received or returned, and the DTO mapping should be done. An application service method is generally considered a unit of work. Validation of user input parameters should also be implemented at the application level. ABP provides an infrastructure that makes it easy to implement validation of input parameters. It is recommended to use a tool like AutoMapper to map the entity to the DTO.Infrastructure Layer (Infrastructure)When warehousing interfaces
)When warehousing interfaces are defined in the domain layer, these interfaces should be implemented in the infrastructure layer. You can use ORM tools, such as EntityFramework or NHibernate. The base class for ABP already provides support for both ORM tools. Database migrations are also used in this layer.Web and Presentation layer (Web Presentation)The Web tier is implemented using ASP. NET MVC and Web APIs. Can be used for multi-page applications (MPA) and single-page applications (
to spend more time developing software for mobile devices, instead of traditional PC programs, and extend from the consumer market to enterprises of all sizes, to serve all internal and external users. If you did not develop mobile programs in 2013, either you are maintaining traditional software or you have missed the opportunity.
8. Desktop HTML Applications
Although mobile apps are growing, it is not time to give up desktop development. Traditional desktop is still very important to many inf
ObjectiveWhen you use ANGULARJS to develop a single Page application (SPA), you can choose to use Angularui Router to provide you with the ability to swap the contents of the page. However, in the UI router usage scenario, it is necessary for the developers to load the controller used by each state before it can be properly switched to the content. This means that the spa created by the developers must firs
structure, which leads to its various behaviors. Pay special attention to Structure assignment. refer to the following code:Using system;Struct ?? Spoint // point structure{???? Public int X, Y;???? Public spoint (int x, int y)???? {???????? This. x = X;???????? This. Y = y;????}}
Class cpoint // vertex class{???? Public int X, Y;???? Public cpoint (int x, int y)???? {???????? This. x = X;???????? This. Y = y;????}}Class Test{???? Static void main ()???? {???????? Spoint
various behaviors. Pay special attention to Structure assignment. refer to the following code:
Using system;
Struct spoint {// point structure
Public int X, Y;
Public spoint (int x, int y ){
This. x = X;
This. Y = y;
}
}
Class test {
Static void main (){
Spoint SPA = new spoint (10, 20); // point structure
Spoint SPB = spa;
// Point structure assignment
SPB. x = 0;
Console. writeline (
implement input parameter validation. It is recommended to use a tool such as automapper to map the entity to the DTO. infrastructure Layer (infrastructure)When warehousing interfaces are defined in the domain layer, these interfaces should be implemented in the infrastructure layer. You can use ORM tools, such as EntityFramework or NHibernate. The base class for ABP already provides support for both ORM tools. Database migrations are also used for this layer. Web and Presentation layer (Web p
;setPs1=rommon! >Fa1enable=1rommonver=15.1 (1r) SG1Configreg=0x2101Boot=bootflash:cat4500es8-universal. spa.03.03.00.xo.151-1.xo.bin,1;Diagmonitoraction=normalRet_2_rts=14:59:24 GMT Sat 27 2016ret_2_rcalts=Bootedfilename=flash1:/user/cat4500es8-universal. Spa.03.03.00.xo.151-1.xo.binConsecpostpassedcnt=34Note that the register value is 0x2101Use the Confreg command to configure the system as follows:Rommon
applications. Its team is world class and the community is excellent, and it combines the best features to create Web apps.AngularJS allows you to write client-side Web applications if you have a smart browser. It allows you to use old-fashioned HTML as your template language, allowing you to extend the HTML syntax to express your application components clearly and concisely. It automatically synchronizes your UI (the view layer) with data from your JavaScript object (the model layer) through t
This article is the second basic knowledge of Python, mainly for the introduction of built-in object types, the type of the following table.Number TypeIn Python, a number is not a true object type, but a grouping of similar types, such as integers and floating-point numbers, complex numbers, and so on. Python also provides several tools for dealing with digital objects, such as built-in math functions POW, ABS, standard library math, random, etc.Look at the simple use of numbers.In [15]: 123 + 2
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