Kasun Dissanayake

Pinned

What are Observables in Angular?

In this tutorial, I am going to explain What is Observable and Where/When we use it. We use Observable to perform asynchronous operations and handle asynchronous data. Another way of handling asynchronous is using promises. We can handle asynchronous operations using either Promises or Observables. What are asynchronous operations and asynchronous data? We already know that JavaScript…

Angular

6 min read

Pinned

Introduction to Redis

In this tutorial, we are going to learn about Redis step by step. Let’s get started and let’s see what is Redis. What is Redis? Redis is an open-source (BSD licensed), in-memory data structure store, used as a database, cache, and message broker. …

Redis

4 min read

Published in Towards Dev

·Pinned

Go Language — Part 1(What is Go Language and Setup the Environment)

GO Language is also known as Golang. In this article, I’ll explain basic information about Go Language. We will build a basic application to understand the theories of the Go Language. Why Go Language? Go is a programming language developed at Google in 2007. And it is open-sourced. But at that time there…

6 min read

Go Language — Part 1(What is Go Language and Setup the Environment)?

Published in Towards Dev

·May 1

MongoDB Query Exercises and Solutions

MongoDB is an open-source NoSQL database management program. NoSQL is used as an alternative to traditional relational databases. NoSQL databases are quite useful for working with large sets of distributed data. MongoDB is a tool that can manage document-oriented information, and store or retrieve information. MongoDB supports various forms of…

Mongodb

7 min read

Apr 13

React Tutorial A Step-by-Step Guide(2)

In this tutorial, I am going to explain the Folder Structure of React applications, What is a React component in a detailed manner, and How we can use them. Folder Structure of React Application It is really important to understand the Files and the Folders involved and How the control flows when you run the…

React

7 min read

Apr 10

React Tutorial A Step-by-Step Guide(1)

In this React tutorial, I will explain What is React, Why should you learn React, and the technical aspects of React. In the end, I will show how to start a simple React application. What is React? React is an open-source javascript library for building user interfaces. React is not a framework. It's…

React

6 min read

Apr 2

Difference Between == and .equals() Method in Java

In this article, we discuss all .equals() method and == operator in Java. You will get a deep understanding of these 2 concepts and their usages. Let’s say you have two integers number1 and number2. Let's try to compare these two integers using the equals(“==”) operator. I am going to…

Equals Method Java

6 min read

Difference Between == and .equals() Method in Java

Mar 30

Comparable vs Comparator in Java

In this article, I will explain about What is the difference between Comparator and Comparable. And when to use Comparable and Comparator. First, let's identify the difference between these two sectors. Comparable Comparable provides a single sorting sequence. …

Comparable

5 min read

Published in Geek Culture

·Mar 20

What is Apache Kafka?

In this tutorial, I am going to simply explain what is apache Kafka, what is the History behind Apache Kafka, What are the key concepts which make Apache Kafka such a unique platform with some examples and Apache Kafka Architecture. Apache Kafka is a, Distributed Event Streaming Message Publish/ Subscribe …

Kafka

11 min read

Mar 18

“super” vs “this” in Java

In this tutorial, I am going to explain the difference between “super” and “this” keywords in Java and what scenarios we can use these keywords. These 2 keywords are very important and frequently used in Java. Super Keyword and Usage The super keyword is a reference variable that is used to refer to the…

Java

6 min read