Pass data between two components using RxJS Subject — When it comes to Angular component communication, the first thing that comes into mind is parent-to-child communication via @Input() decorator and child-to-parent communication via @Output() decorator. That isn’t the only technique to communicate data between components. Here we are going to use RxJS Subject to pass data between two components…

Heroku is a cloud platform as a service (PaaS) that supports deploying and running applications in the cloud. It supports multiple languages such as Java, Python, Node.js, Go, PHP, etc. Here, our goal is to build and deploy a simple Node.js application in Heroku. …

In this article, we are going to discuss two ways of dockerizing a Spring Boot app with MySQL database. Those are; By creating a docker network Using docker-compose Here is the application we intend to deploy to docker. GitHub - Kanchana46/spring-boot-backend You can't perform that action at this time. You signed in with another tab or window. You signed out in another tab or…github.com This application contains CRUD operations for an employee-management system such as adding…

Loops are one of the first concepts that everyone learns once start programming. We have for loops, while loops, do-while loops, etc in most programming languages. What kind of for loops are you aware of in JavaScript? We have traditional for loop, forEach loop, for…of loop, and for…in loop. Have…

ES6, also known as ECMAScript 2015, is one of the major editions in ECMAScript language standard which brought some exciting features. Today we are going to see some of the advantages it offers. let and const keywords Template literals Multi-line Strings Arrow Functions Promises Destructuring for…of loop Spread operator and…

In this article, we are going to see the modern ways of using arrays and doing operations with arrays. These methdos are far more convenient and will help you in writing code with less lines. Let’s explore the methods of doing these with examples. 1. Array.map() method We can use map() to transform…

“Java Strings are immutable.” is a well-known and popular statement in the Java world. But how and why is this so? Let’s explore. Simply, the string is immutable means once we created a string variable we cannot modify it. Objects in Java are created in heap memory. So String objects…

MongoDB is a very popular document-oriented database in the NoSQL world. It makes use of collections and documents instead of tables and rows of Relational databases. A Collection consists of a set of documents. Data will be stored in a key-value pair in a document. Here we are looking into…

How Node.js middleware works and what it is. — Middleware can be identified as a function that executes between the request and response. It also has access to the request and response object. Let’s try to understand the concept using a simple program written in Node.js. This has two routes. As you can see there is a function…