Creating a simple CRUD API app using GraphQL with NodeJs and MongoDB. — GraphQL is a new API standard invented and developed by Facebook. It is an open-source server-side technology, now maintained by a large community of companies and individuals from all over the world. …

Const creates a readonly reference to a value, i.e values assigned to a const variable cannot be reassigned. But Wait… there is a catch here ! Now, what we read above holds true for primitive datatypes i.e string, number, boolean, null, undefined but this is not the case with non-primitive datatypes such as objects and arrays. Let us…

Environment variables are one of the most important and core concepts of Nodejs as they allow us to configure our application for multiple environments and allow the application to behave differently for each environment such as development, test, stage, production. It is commonly used to configure ports, DB connection, host…

How to handle asynchronous execution in JavaScript with async, await — People new to Javascript often seem to be confused about how to handle the asynchronous nature of javascript. This article with help you understand the what, why and when of async await with practical and easy to understand examples. Why was async/await introduced❔ Asynchronous programming surely has it’s benefits but it becomes a problem…

Understanding the hoisting behavior of JavaScript. One of the unique behavior of JavaScript is variable and function hoisting, hoisting enables us to use variable or function before it is been declared. No matter where we declare our variables and functions, JavaScript moves it to the top of the scope during…

Understanding JavaScript map, reduce, filter methods. Why we need it ❔ Often we come across cases where we need to perform some operations inside JavaScript array or array of objects, as someone new to javascript,the first thing that always comes to our mind is running the array or array of objects in for/forEach loop in…

The coolest job of the 21st century — For people working in the Technology Sector, it’s very rare that they have not yet heard of Machine Learning and Artificial Intelligence. …

Improve your ML model using cross validation. — The ultimate goal of a Machine Learning Engineer or a Data Scientist is to develop a Model in order to get Predictions on New Data or Forecast some events for future on Unseen data. …

In machine learning, there’s something called the “No Free Lunch” theorem which means no one algorithm works well for every problem. This is widely applicable in Prediction Models where we train our dataset on an algorithm and later use the trained model for predictions on new data. As a result…