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Mobile Phones/Cell Phones is the fundamental element in every moment or second in our life. But this most useable phone has some health effect that are...
Read articleProgramming languages are the foundation of software development and computer science. They provide a medium through which humans can instruct machines to perform specific tasks. Here’s...
Read articleAnd note some fundamentals of Promise – When you create a new Promise, you’re really just creating a plain old JavaScript object. This object can invoke...
Read articleThis tutorial teaches FIWARE users how to alter the context programmatically. The tutorial builds on the entities created in the previous stock management example and enables a user...
Read articleIn this file, you will write the functions that dispatch an action. These functions will be linked to your component props by the container’s mapDispatchToProps function....
Read articleA lifecycle hook that is called after Angular has fully initialized a component’s view. Define an ngAfterViewInit() method to handle any additional initialization tasks. interface AfterViewInit...
Read articleAggregation in MongoDB is nothing but an operation used to process the data that returns the computed results. Aggregation basically groups the data from multiple documents...
Read articleFiber, the new React reconciliation algorithm, has the ability to start and stop rendering as needed for performance benefits. One of the trade-offs of this is...
Read articleFirst a re-cap of the basic CSS Chain/Descendant Selector 1> Chain Selectors – https://stackoverflow.com/questions/13444647/css-class-definition-with-multiple-identifiers .class1.class2 will match only the elements that have both of the classes defined....
Read articleBasically, the Company asked to create an Android “screen” that would allow a user to enter and submit the following data from an American Express, Discover,...
Read articleAccording to original Documentation the pipable operator is that function take observables as a input and it returns another observable .previous observable stays unmodified. pipe(...fns: UnaryFunction<any,...
Read articleOne of the main goals of Angular is to help the developer create reusable and composable components. I think ng-content is one of the simplest ways...
Read articleThis is a classical question in an interview. We can concatenate the topics all above in this theme: Do the DNS query first, it will offer...
Read articleHow to get-the-token-in-postman-whenever-i-use-middleware-in-my-private-routes, so I can check from back-end that my secured authenticated routes ( secured with Passport.authenticate middleware) are all working for each of the...
Read articleOpen a webpage ( say https://github.com/rohan-paul ) in Google Chrome and go to “View > Developer > Developer Tools” menu. You can also open the developer console by...
Read articleAapart from GET, there are other types of HTTP methods including: HEAD POST PUT DELETE CONNECT OPTIONS TRACE What Does the PUT Method Do? The PUT...
Read article1. The most fundamental difference between the two is that TCP and HTTP works at different layers, i.e, they have independent (and radically different ) tasks...
Read articleThe HTTP status codes are developed as per the Internet standards defined by Internet Engineering Task Force (IETF). They are classified into five different categories as...
Read articleThe HTTP status codes are developed as per the Internet standards defined by Internet Engineering Task Force (IETF). They are classified into five different categories as...
Read articleThe res object represents the HTTP response that an Express app sends when it gets an HTTP request. Source: https://www.tutorialspoint.com/nodejs/nodejs_response_object.htm res.status(code) res.status(code) This method is used to...
Read articleHTTP is a method for encoding and transporting data between a client and a server. It is a request/response protocol: clients issue requests and servers issue...
Read articleNormally, we can put normal JS code and get no help from what TypeScript has to offer. In order to TS to force us to actually...
Read articleThunks are a functional programming technique used to delay computation. Instead of performing some work now, you produce a function body or unevaluated expression (the “thunk”)...
Read articleThus, in summary there are two parts to Redux-Thunk: A thunk creator, which is an action creator that returns a thunk (a.k.a. asynchronous action creators) The...
Read articleHow exactly does mapStateToProps know which is the state variable that I am talking about. In other words, when I have many reducers file how each...
Read articlemapStateToProps() is a utility which helps your component get updated state(which is updated by some other components), mapDispatchToProps() is a utility which will help your component...
Read articleAll mapStateToProps() does is, it takes a piece from the App’s single state-tree i.e. the store and turn this into a component prop, so I can use it in this...
Read articleBasically with mapDispatchToProps I connect a Redux action to a React component. mapDispatchToProps function let’s us inject certain props into the React component that can dispatch actions. 1> Official docs of...
Read articleFlux is a pattern and Redux is a library. Flux is a fancy name for the observer pattern modified a little bit to fit React. Both...
Read articlehttps://redux.js.org/api-reference/store#dispatch dispatch() is one of the 4 methods of redux-store. dispatch() is the method used to dispatch actions and trigger state changes to the store. react-redux is simply...
Read articleWe create a store, using the createStore function. We pass it our reducer, and then use the compose function to create a single function from two other functions....
Read articleAnd container is a component , where I am using a Redux state inside of a React component. Because note, while we have the application state...
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