fix issue 93

README.md

@@ -304,7 +304,7 @@
 |280| [What are Angular Signals?](#what-are-angular-signals)
 |281| [Explain Angular Signals with an example](#explain-angular-signals-with-an-example)
 |282| [What are the Route Parameters? Could you explain each of them?](#what-are-the-route-parameters-could-you-explain-each-of-them)
-|283| [](#)
+|283| [What is NgRx?](#what-is-ngrx)
 
 1. ### What is Angular Framework?
 
@@ -4824,3 +4824,50 @@
  Route parameters provide a flexible way to handle dynamic data in your Angular application. They allow you to create routes that can be easily customized and provide a seamless user experience by reflecting the current state of the application in the URL.
 
  **[⬆ Back to Top](#table-of-contents)**
+
+283. ### What is NgRx?
+
+ NgRx is a framework for building reactive applications in Angular. It is a state management library that provides a Redux-inspired architecture for managing and centralizing application state. NgRx is built on top of RxJS and follows the principles of reactive programming.
+
+ The main components of NgRx include:
+
+ 1. **Store:** A single, immutable data structure that holds the entire application state.
+ 2. **Actions:** Plain objects that describe events or user interactions that can change the state.
+ 3. **Reducers:** Pure functions that take the current state and an action, and return a new state.
+ 4. **Effects:** Side effect handlers that listen to actions and can perform asynchronous operations like API calls.
+ 5. **Selectors:** Functions used to query and derive data from the store.
+
+ NgRx helps manage complex state in large Angular applications by providing predictable state management, improved debugging capabilities, and better separation of concerns. It's particularly useful for applications with:
+ - Complex data flows
+ - Multiple components sharing the same data
+ - Need for time-travel debugging
+ - Requirements for state persistence
+
+ Here's a simple example of NgRx usage:
+
+ ```typescript
+ // Action
+ export const loadUsers = createAction('[User List] Load Users');
+
+ // Reducer
+ export const userReducer = createReducer(
+ initialState,
+ on(loadUsers, state => ({ ...state, loading: true }))
+ );
+
+ // Selector
+ export const selectUsers = (state: AppState) => state.users;
+
+ // Component
+ export class UserComponent {
+ users$ = this.store.select(selectUsers);
+
+ constructor(private store: Store<AppState>) {}
+
+ loadUsers() {
+ this.store.dispatch(loadUsers());
+ }
+ }
+ ```
+
+ **[⬆ Back to Top](#table-of-contents)**