Q1031. Is Node.js completely single threaded?
Node is a single thread, but some of the functions included in the Node.js standard library(e.g, fs module functions) are not single threaded. i.e, Their logic runs outsi...
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Q1032. What are render props?
**Render Props** is a technique for sharing code/logic between components using a prop whose value is a function that returns a React element. Instead of duplicating stat...
Q1033. What are the common use cases of observables?
An **Observable** (popularized by RxJS and reactive programming) represents a lazy, push-based stream of multiple values emitted over time. Observables excel at handling ...
Q1034. How to dispatch an action on load?
You can dispatch an action in `componentDidMount()` method and in `render()` method you can verify the data. ```javascript class App extends Component { componentDidMount...
Q1035. What is RxJS?
RxJS (Reactive Extensions for JavaScript) is a library for implementing reactive programming using observables that makes it easier to compose asynchronous or callback-ba...
Q1036. How to use `connect()` from React Redux?
You need to follow two steps to use your store in your container: 1. **Use `mapStateToProps()`:** It maps the state variables from your store to the props that you specif...
Q1037. What is the difference between Function constructor and function declaration?
The functions which are created with `Function constructor` do not create closures to their creation contexts but they are always created in the global scope. i.e, the fu...
Q1038. Whats the purpose of `at` symbol in the Redux connect decorator?
The **@** symbol is in fact a JavaScript expression used to signify decorators. _Decorators_ make it possible to annotate and modify classes and properties at design time...
Q1039. What is a Short circuit condition?
Short circuit conditions are meant for condensed way of writing simple if statements. Let's demonstrate the scenario using an example. If you would like to login to a por...
Q1040. How to use TypeScript in `create-react-app` application?
Starting from react-scripts@3.3.0+ releases onwards, you can now optionally start a new app from a template by appending `--template [template-name]` to the creation comm...