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In today’s IT industry, writing code is easy. But building real-world, scalable applications is what separates an average developer from a corporate engineer . And this is exactly where RxJS (Reactive Extensions for JavaScript) comes into the picture. 💡 What is RxJS? RxJS is a powerful library used in Angular to handle asynchronous operations and data streams . In simple terms: It helps you manage data that changes over time It allows you to write clean, reactive, and scalable code ⚡ Why RxJS is Important in Angular? Angular is built on reactive programming principles , and RxJS is deeply integrated into it. You are already using RxJS when you use: HttpClient for API calls Form value changes Routing events User interactions But the real question is: Are you using it correctly… or just calling .subscribe() blindly? 🔥 Core Concept: Observable The heart of RxJS is the Observable . this.http.get('/api/data') This does not exe...

In modern web applications, communication with backend APIs is essential. In Angular, this is handled using the HttpClient module , which provides powerful methods to send HTTP requests and process responses. If you're building real-world enterprise applications, mastering HttpClient is a must. 🔹 What is HttpClient in Angular? HttpClient is a service provided by Angular to interact with REST APIs. It is part of the @angular/common/http package. Key Features: Supports HTTP methods (GET, POST, PUT, DELETE) Works with Observables (RxJS) Handles JSON automatically Supports error handling and interceptors 🔹 How to Enable HttpClient import { HttpClientModule } from '@angular/common/http'; @NgModule({ imports: [HttpClientModule] }) export class AppModule {} Inject it in your component/service: constructor(private http: HttpClient) {} 🔹 get() Method in Angular The get() method is used to fetch data from a server. this.http.get(...

By:   Sunil Sahu  , Author SelfLearn Java  Introduction: Internship Is Not a Certificate – It Is Your Career Foundation For BE and MCA students, an internship is not a ritual, not a college formality, and definitely not “just another certificate.” It is the first real entry into the professional IT world. Unfortunately, thousands of talented students destroy their career foundation every year due to wrong internship choices, casual behavior, and misleading college systems. This article exposes: The most dangerous internship mistakes students make The shocking truth of college-based internships And the right way to use the final 6 months for real job success Mistake #1: Treating Internship as a Formality Many students believe:  “Internship sirf certificate ke liye hoti hai.” This is the first professional blunder. Companies treat internships as trial employment. Your performance decides: Job offers Salary growth Industry recommendations An internship is your fir...

Behavioral studies by experts have found that leg positions can reveal aspects of our personality. Our legs and feet can provide insights into our subconscious, which is programmed to either move toward what we desire or away from negative emotions such as nervousness, anxiety, boredom, and insecurities. Interesting studies have shown that airline personnel are trained to recognize passengers sitting with crossed ankles as a sign of nervousness or anxiety. During their training, cabin staff are taught to ask these passengers multiple times if they need anything else, as a way to help them open up and relax. Key Traits: Intelligent, Rational Thinker, Punctual, Smart Worker, Cleanliness Lover, Honest but Reserved. It is revealed that  people who sit with knees straight  are perceived as qualified for a job role during their interviews. They are also found to be one who believes in themselves and their skills. They have a healthy and positive outlook toward themselves and as a re...

Concurrent Collection In Synchronized Collection a thread lock the entire list. Only one thread access the entire list at a time. In concurrent collection a threat lock one element, each  element can be accessed by different thread concurrently  Java supported multithreading and concurrency from initiation. Java has introduced the concurrent collection in java 5.0 and java 6.0 over the synchronized collection to improve the performance in a multithreading environment. java has provided concurrent collection API apart from collection API to handle the multithreading and concurrency in a better manner. We can find all the new concurrent collection Interfaces and Classes under the package name java.util.concurrent. In this article, we will focus on some Key interfaces and classes of the java.util.concurrent package. Synchronized Collection V/S Concurrent Collection: Synchronized Collection: Synchronized Collections are slow in performance  Multiple threads can access a syn...

AI vs ML vs DL We are surrounded by multiple technologies. Artificial Intelligence, Machine Learning, Deep Learning, Data Science are common terms nowadays.  People use these terms interchangeably but all these terms are different in terms of definition, application, and limitations.  Nowadays we use many applications that are used in AI. There are many industries that work with AI like Healthcare, E-Commerce, Entertainment, Gaming, Automobile, Education, etc.  Machine Learning and deep learning are used to solve a complex task with huge datasets to make them simple. Artificial intelligence: Artificial Intelligence is a field to make a machine intelligent. AI makes machines to act like human's brains. AI incorporates human intelligence into machines. Intelligence means machines can predict, classify, reason, plan, and perceive like humans. Applications      Self-driving cars like Tesla, Nissan,  Voice Assistants like Siri and Alexa, Amazon Echo Machine...

Java 8 Features 1. forEach() forEach(): method is used to iterate the elements. It takes a single parameter. It is a default method of the Iterable interface. We can pass lambda expressions as an argument. public class ForEachExample {     public static void main(String[] args) {         List<String> list = new ArrayList<String>();         list.add("One");         list.add("Two);         list.add("Three");         list.add("Four");         list.forEach(li -> System.out.println(li));     } } 2. Functional Interfaces and Lambda Expressions Functional Interface The Functional interface contains only one abstract method and also contains a number of default and static methods. Functional Interface is annotated by @FunctionalInterface annotation, it ensures that ...