This Node js tutorial is designed for beginners to help you learn Node.js step by step. All you need to do is follow this Node.js tutorial stepwise. Each step covers important topics related to Node.js. This Node.js tutorial is divided…
Nodejs authentication using JWT a.k.a JSON web token is very useful when you are developing a cross-device authentication mechanism. Here is how token-based authentication works: User logins to the system and upon successful authentication, the user are assigned a token…
Write code, test and deploy This is one of the common development cycles of any developer. Most of the time testing and deployment steps do not change frequently and in order to keep the developer focus on writing code, we…
Google has announced a new service to prevent spam and attacks on your website. They name it “NO CAPTCHA reCAPTCHA” . Google reCAPTCHA is designed to protect your website from spam and abuse. In this tutorial, I am going to show…
Real-time web/mobile application is becoming popular day by day. Services like Firebase and Pusher provides API’s and Services to develop effective real-time notification system for your mobile and web apps. We are not going to use these Services in this…
If you are using Node.js, you can use the package called “ethereumjs-wallet” to generate Ethereum private keys and addresses. This is an official package provided and maintained by the Ethereum JavaScript community. To generate Ethereum addresses, follow these steps: Step…
This tutorial is about Connecting Java to MySQL database using JDBC driver. You may find many tutorials on this topic but most of them show you the code and links to download a driver and install it which is what…
S.O.L.I.D Stands for first five object-oriented design principle by Robert C.Martin. SOLID principles can be used to design and develop extensible and easy-to-maintain software. By using these principles in object-oriented programming developers can create and maintain the codebase very easily.…
Bubble sort is the simplest sorting algorithm in computer science. Bubble sort performs the sorting process by swapping adjacent elements if they’re not in the desired (ascending or descending) order. This process repeats from the beginning of the list of…
In this tutorial, we are going to learn how to read and write JSON to a file in Python using the built-in Python module. We will store our data in the dict object and store it in the file as…