When I review a code, I see people keep mixing for and forEach in their code. Either they are confused, or they can’t differentiate between for and forEach. As a thumbs rule, You should always use forEach except for a few scenarios. Here in this article, I will explain when you should make those exceptions. This is valid for Array.map also.

Basic syntax

Before going further let’s have a quick look at both of the syntaxes.

For Loop:

for ([initialExpression]; [conditionExpression];[incrementExpression]) {
  statement|s
}const array = [1, 2, 3, 4, 5];
for (let index = 0; index < array.length; index++) {…

JS|TS By Example

Top 10 Utilities you may need for your TypeScript Projects

You work on multiple projects. Most of the time you repeat your self while writing common util functions. Here are some of the most useful utilities that you can use for your TypeScript or JavaScript

1. compact: Compact is normally used to remove the falsy value from an Array. There are multiple variations of it.

Simple Variant: filter out falsy values (false, null, 0, "", undefined, and NaN).

// Code:
const compact = (arr = []) => arr.filter(Boolean);// How to use it
compact([0, 1, false, 2, "", 3, "a", Number("e") * 23, NaN, "s", 34]); // […

For the past few years, I have almost stopped writing JavaScript. You may ask why. It doesn't mean I don't like JavaScript. However, there is a better version of JavaScript, TypeScript. Yes, I have started developing all my library and application in TypeScript. It includes the backend too.

Here in this article, I will try to answer the question of why you should use TypeScript instead of JavaScript. This article does not cover the pros and cons of JavaScript. Rather than just focus on Good Parts of TypeScript.

Writing a command-line app is a challenge in many object-oriented languages. Most the object-oriented languages need heavy lifting structure(source code) to run a simple program. Java/Kotlin is one of them. Here, Gradle comes to save us.

Gradle is a framework helping us to create and maintain big applications. Gradle is awesome. However, setting up Gradle is also a tedious task. Here I will show step by step setup to build a scalable CLI(Command Line Interface) tool in Kotlin.

Prerequisite:

1. Java 1.8 and above
2. Gradle 5.5.1 and above(Gradle which supports Kotlin DSL)

Step 1: Create a multi-module Gradle project

Create a folder and scaffold the structure with Gradle.

mkdir…

From choosing the language for development to getting acquainted with the micro-frontend approach, the journey is full of incremental improvements and valuable learnings.

I am Deepak, the Tech Lead of the WebStudio Team, which helps develop the framework for DBS-designed components and coding standards in DBS Bank. WebStudio is used across six markets, many products, and by hundreds of developers. The raison d’etre of the WebStudio Team is to enhance the overall User Experience (UX) of web applications.

Our journey started two years ago. As part of DBS’s digital transformation, we started revamping our tech stacks for the front-end teams…

• Are you a beginner and you want to start Golang but don’t know how?
• You have written express.js code and want to create micro-services using Golang?

Then this article is for you. This article will guide you step by step building block to build a scalable Golang project but in simple words.

Do I really need Golang?

Before going further you should ask this question to yourself and your teammates. Hope you are not migrating just for the sake that you want to try out something new. Golang is a new language but it is not that new. The first stable release was in 2009…

If you heard of Snowpack, you may be familiar with ESBuild. ESBuild is one of the fastest bundler/compilers for frontend libraries. ESBuild is written in Golang, which makes it fast. ESBuild is not a complete solution for your all needs. However, implementing it in your pipeline significantly can improve your team productivity and deployment build time.

Prerequisite:

1. Go [v1.6 and above]
2. NPM (nodejs package manager)

Note: ESBuild is also available in nodejs. However, I find using Go and creating binary CLI is much faster and reusable.

Why should I use ESBuild when I have webpack?

There is no reason that you should stop using webpack. But there are a…

Performance testing or monitoring is not new to us. Whenever we create an API, We do need testing. For code and components, We write unit tests and integration tests. However, for performance, We need to load test and monitor the result.

I have worked on JMeter previously. It is a good tool. However, In this world of data. It is very hard to integrate JMeter with any programing language. I recently come across K6 when I was looking for Developer friendly load testing tool. K6 is in the open-source world for a long time. However, After writing a few load-testing…