rxjs subject

Router:router) {} ngoninit () {}//main implementation methods accept the file when it is modifiedFilechange (event) { This. File =Event.srcElement.files; } //Submit an eventSubmit () {//to submit parameters and files uniformly This. Api.editalbum ( This. Editalbumparam, This. file). Subscribe (res = { if(Res. state = = 0) {alert ("Added successfully! "); } }); }}2. Api.service.ts (all component the required path for API requests)Import {injectable} from ' @angular/core '; import {

": "~0.1.13", "core-js": "^2.4.1", "reflect-metadata": "^0.1.8", "rxjs": "5.0.0-beta.12", "systemjs": "0.19.39", "zone.js": "^0.6.25" }, "devDependencies": { "@types/core-js": "^0.9.34", "@types/node": "^6.0.45", "concurrently": "^3.0.0", "lite-server": "^2.2.2", "typescript": "^2.0.3" }} Tsconfig. json The configuration file of TypeScript, which defines how the TypeScript compiler generates JavaScript code from the project source file. { "compilerOpt

build your code to reduce development time. VS code supports most mainstream frameworks through plugins. However, there are still some specific frameworks that are not fully supported. Here are some of the more powerful vs code plugins available. Angular 6: Provides code snippets for Angular 6, supporting Typescript, HTML, Angular Material Ngrx, RXJS, and Flex Layout. There are currently more than 2.2 million downloads and 172 angular code sni

observer interface. A specific observer contains a topic interface variable that can be referenced by a specific topic, so that a specific observer can add his/her reference to a specific topic set and make himself/herself an observer, you can also delete a topic from its collection so that it is no longer its observer. In the example of the previous part-time center, the part-time center is a specific topic. It can update various part-time information and notify its members. Of course, it can

; defined at module loadtime selector: ' Contacts-header ' , ' Header.component.html ', styleurls: [' Header.component.css ']}) Export class Headercomponent Implements OnInit {}JSPM://If We decide to use JSPM, we use the Typescriptoptions configuration format in the Config.js file:Systemjs.config ({typescriptoptions: {module:"Commonjs", Emitdecoratormetadata:true, Experimentaldecorators:true}, Transpiler:false, BaseURL:"/dist", Map: {app:' SRC ', Typescript:' Node_modules/typescript/lib/types

// When I introduce methods of the tperlregex class, I will discuss more about references to (subexpressions. Delphi regular expression syntax (9): Critical match-also known as "pre-search" and "reverse pre-search"// Match the right sideVaRReg: tperlregex;BeginReg: = tperlregex. Create (NiL ); Reg. Subject: = 'delphi 6; Delphi 7; Delphi 2007; Delphi net ';Reg. RegEx: = 'delphi (? = 2007 )';//? =Reg. Replacement: = '◆ ';Reg. replaceall; Showmessa

I. Intention Defines a one-to-many dependency between objects, and when the state of an object changes, all objects that depend on it are notified and automatically updated. Second, applicability The design pattern mentions that observer mode can be used in any of the following situations: 1. When an abstract model has two aspects, one aspect relies on the other. Encapsulate the two in separate objects so that they can be changed and reused independently of each other. 2. When a change to

The observer pattern of Java and patternsIn the book "Java and Patterns" of Dr. Shanhong, this describes the Observer (Observer) pattern:　　The Observer pattern is the behavior pattern of the object, also called the Publish-subscribe (publish/subscribe) mode, the Model-view (Model/view) mode, the source-listener (Source/listener) mode, or the slave (dependents) mode.The Observer pattern defines a one-to-many dependency that allows multiple observer objects to listen to a

The observer pattern of Java and patternsIn the book "Java and Patterns" of Dr. Shanhong, this describes the Observer (Observer) pattern:　　The Observer pattern is the behavior pattern of the object, also called the Publish-subscribe (publish/subscribe) mode, the Model-view (Model/view) mode, the source-listener (Source/listener) mode, or the slave (dependents) mode.The Observer pattern defines a one-to-many dependency that allows multiple observer objects to listen to a

data computing framework, in which the resource manager becomes the final resource distributor in the entire cluster. The application subject for a job becomes a specific framework library, which is responsible for two tasks: communicating with the resource manager to obtain resources and working with the Node Manager to complete node task tasks. Figure 1 Structure of mapreduce v2 (1) Resource Manager The resource manager is divided into two compone

Create List subject = ["Liunx", "Python", "web", "Java"]#读取列表print (subject) #打印显示 [' Liunx ', ' python ', ' web ', ' Java '] #列表的切片, the slice index is the 0-based print (subject[0]) # NO. 0 index, That is, the first element of the list print (subject[1]) print (subject[2])

Original source: http://www.cnblogs.com/java-my-life/archive/2012/05/16/2502279.html In Dr Shanhong's "Java and Schema" book, this describes the Observer (Observer) pattern: 　　The observer pattern is the behavior pattern of the object, also known as the Publish-subscribe (publish/subscribe) mode, model-view (model/view) mode, source-listener (Source/listener) mode, or dependent (dependents) mode. The Observer pattern defines a one-to-many dependency that allows multiple observer objects to lis

Prepare angular 2 environment Ng-bootstrap is based on angular 2, so it is necessary to prepare the angular 2 environment first. Using Ng-bootstrap Download Ng-bootstrap Ng-bootstrap uses bootstrap 4.0 ALPHA2, so you need to download the bootstrap first and recommend the form of NPM package: NPM Install bootstrap@4.0.0-alpha.2--save Then download the ng-bootstrap and use the same form as NPM package: NPM Install @ng-bootstrap/ng-bootstrap--save Modify Systemjs.confi

cognitive activities. The emotional will and understanding are unified. Understanding is soluble in the emotional will. Each stage of the cognitive process is subject to the emotional will factor, and each development process is subject to the influence and restriction of the emotional will factor. I. Status and Role of emotions in cognitive activities Li Jianhua believes that emotion is an indispensable n

/*Question: Suppose there is a student Score Table (score) as follows:Sname subject scoresWang Gang's Chinese 75Wang Gang mathematics 83Wang Gang English 93Li Jun Chinese 74Li Jun mathematics 84Li Jun English 94(The following result is displayed ):Sname Chinese math English----------------Li Jun 74 84 94Wang Gang 75 83 93-------------------*/Create Table Tb (sname varchar (10), subject varchar (10), scores

Photography beginners: 38 training projectsTraining 1. panoramic deep exercises Photo body: General scenery, flowers, city buildings, and other scenery with strong impact.Seeking: All images are real focal points.Suggestion: First Use wide angle lens: 24mm- 35MM shooting, light ring: F11-16, aperture priority AE mode. Training 2. single focus exercise Requirement: focus only on the primary subject, light depth of field.Suggestion: middle lens: Above 8

(Last Update Time: 2010.11.26) This post was originally discussed at the C ++ struggle Park Forum. Later I felt it was necessary to share it with more friends, so I posted it here. I hope you can add it together. I personally learned C/C ++, so I will not discuss Java and other programming languages.Here we will mainly discuss the typical books in C/C ++, and some important books in the field of computer science! I believe that this post will certainly help many C/C ++ and family planning studen

Document directory SQL column-to-row SQL column forwarding 16:13:41 Good stuff, turn it around, hey. * Normal row/column Conversion. yanghua in Sanya, Hainan) assume that there is a student renewal table (tb) as follows: name Subject Result Zhang San Language 74 Zhang San mathematics 83 Zhang San physics 93 Li Si language 74 Li Si mathematics 84 Li Si physics 94 */else/* want to change to Name Chinese mathematics physics ---------- ----------- ----

The data table is as follows:I'm using a MySQL database, so the relevant SQL is CREATE TABLE ' Stuscore ' ( ' ID ' int (one) not NULL auto_increment, 'name ' varchar ( default NULL), ' Subject ' varchar default NULL, ' Score ' varchar default NULL, ' Stuid ' varchar default NULL, PRIMARY KEY (' id ') ) Engine=innodb DEFAULT Charset=utf8; /*data for the table ' stuscore ' * / Insert INTO ' Stuscore ' ('

method called, that is, the method to be executed; args is the method parameter; proxy, what is this parameter? The above implementation of the invoke () method is a standard form. We can see that the proxy parameter is not used here. View the Proxy instructions in the JDK documentation as follows:Java code A method invocation on a proxy instance through one of its proxy interfaces will be dispatched to the invoke method of the instance's invocation handler, passing the proxy instance, a