HypeJS.

A place about all things JavaScript and more

Golang, Go read JSON data from a file and create a slice of struct

Posted on: May 1, 2024

Announcement: If you are interested to contribute with articles, contact me at georgerdp@gmail.com

I hope you are finding this platform useful and wishing you to have a good day!

Using a JSON file which contains a collection of people, read the JSON and map it to a slice of struct.

George Crisan

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HTTP/HTTPS server with Go 1.22, with nested routing, middleware and more

Posted on: April 27, 2024

In my effort to learn Go 1.22 I've tried to see which of my skills learned in express/node.js can be transferred to GO.

George Crisan

What are React Server Components? How it works?

Posted on: April 19, 2024

This time around we are not dealing with a new fancy API but rather a new application architecture whict lets you fetch data in asynchronous components that run on the server or even during the build time. Let's have a look at what React team has in the store for the future.

George Crisan

This is how a Javascript engine works

Posted on: March 19, 2024

A JavaScript engine is a program that converts code into machine-readable instructions which can be executed by the computer's hardware. Modern JavaScript engines no longer just interpret code, they compile it. V8 is a JavaScript engine developed by Google for Chrome and Chromium web browsers. V8 is written in C++, it is portable and runs on Mac, Windows, Linux and other systems. Because of it's popularity, V8 will be the subject to disect in this article.

George Crisan

Destroy event listeners with AbortController

Posted on: December 22, 2023

The other day, I came across an unconventional usage for AbortController API. I was aware that AbortController can be used for better control over web requests, but I never thought to leverage it with event listeners. I assume you know how to use the traditional EventTarget: removeEventListener() method so I will not talk about that, today we are talking about an alternative.

George Crisan

July 27, 2023 - Using asyncio for concurrent http requests with Python (asyncio.ensure_future and asyncio.gather)

Python has a few ways for implementing fetching data using http with various packages. "requests", "asyncio", etc. In this article will make a practical example that demonstrates how to run 100 requests concurrently as asyncio tasks and then how to save the results to a file as json, using asyncio.ensure_future and asyncio.gather. Why would I want to use asyncio.ensure_future and asyncio.gather? Click the article to read more ...

May 21, 2023 - Set Environment Variables in LINUX with PM2 for Node and more

Environment variables are an essential component of any Linux system, enabling the configuration and behavior of various applications and services. In this article, we will explore how to print, set, and use environment variables in Linux, along with a specific focus on PM2's "--update-env" flag for restarting services. Whether you're a beginner or an experienced Linux user, this guide will help you navigate the world of environment variables and enhance your system's functionality.

May 7, 2023 - Python vs JavaScript snippets

I've started recently to use Python with Scrapy. Naturally, when I need to do certain things like spreading a list of values or using a try/catch block, my brain attempts initially to write code the way we do it in JavaScript. (I've done mainly JavaScript for the last 7 years or so) Assuming you are new to Python too, these snippets are meant to stimulate our brain's neuroplasticity. Enjoy.

May 6, 2023 - Use cases for Proxy in JavaScript

A proxy in JavaScript is an object that acts as an interface to another object, allowing you to intercept and customize operations performed on that object. This can be useful for a variety of purposes, such as logging, validation, access control and caching.

April 10, 2023 - Unconventional ways of using JavaScript

JavaScript is a versatile programming language that can be used in a wide range of applications. While it's commonly used for web development, there are many unconventional ways to use JavaScript that you may not be aware of. In this article, we'll explore some of the creative and unconventional ways to use JavaScript.

April 10, 2023 - A brief summary of React vs Angular vs Vue

Brief summary between the 3 technologies that are available to solve similar problems.

January 28, 2023 - WebSockets, the "why" and "how"

The WebSocket protocol facilitates message passing between a client and server providing a bidirectional, full-duplex communications channel that operates over HTTP through a single TCP/IP socket connection meaning that it is a persistent connection between a client and server.

January 22, 2023 - What is a packet?

Any data sent over the Internet is divided into smaller segments called packets. In networking, a packet is a small segment of a larger payload. Data sent over computer networks is divided into packets. These packets are then recombined by the computer or device that receives them.

October 15, 2022 - Functions As Values, JS functions tutorial

Function definition and invocation are syntactic features of JavaScript and of most other programming languages. In JavaScript, however, functions are not only syntax but also values, which means they can be assigned to variables, stored in the properties of objects or the elements of arrays, passed as arguments to functions, and so on.

October 15, 2022 - File extensions, description and the MIME types for the Web

File extensions, description and the MIME types for the Web, video mime types, zip mime types and more. Multipurpose Internet Mail Extensions or MIME type gives information about the nature and format of a document, file, or assortment of bytes.

October 9, 2022 - Another SOLID article, the SOD.

These principles should be taken as a guide, should have a place in your thinking as a suggestion and not as a religious dogma. In this article I am going to discus 3 of the 5 principles, hence the SOD. Why the SOD? Because these are the principles I find most applicable in my day to day tasks.

October 7, 2022 - Another JavaScript framework? Qwik

Much like React, Qwik is a framework that renders a tree of components resulting in an interactive application.

September 15, 2022 - Implicit and explicit coercion in JavaScript

JavaScript is a weakly-typed language, values can also be converted between different types automatically. This is what we call implicit type coercion. We also have the ability to convert values in a more implicit way using various techniques. This is an article about the implicit and explicit (type casting) type coercion in JavaScript.

HypeJS.

A place about all things JavaScript and more

Golang, Go read JSON data from a file and create a slice of struct

More Stories

HTTP/HTTPS server with Go 1.22, with nested routing, middleware and more

What are React Server Components? How it works?

This is how a Javascript engine works

Destroy event listeners with AbortController

July 27, 2023 - Using asyncio for concurrent http requests with Python (asyncio.ensure_future and asyncio.gather)

May 21, 2023 - Set Environment Variables in LINUX with PM2 for Node and more

May 7, 2023 - Python vs JavaScript snippets

May 6, 2023 - Use cases for Proxy in JavaScript

April 10, 2023 - Unconventional ways of using JavaScript

April 10, 2023 - A brief summary of React vs Angular vs Vue

January 28, 2023 - WebSockets, the "why" and "how"

January 22, 2023 - What is a packet?

October 15, 2022 - Functions As Values, JS functions tutorial

October 15, 2022 - File extensions, description and the MIME types for the Web

October 9, 2022 - Another SOLID article, the SOD.

October 7, 2022 - Another JavaScript framework? Qwik

September 15, 2022 - Implicit and explicit coercion in JavaScript

July 31, 2022 - Amend the state in React using the context Api and useContext hook

July 26, 2022 - TypeScript Exception - Property does not exist on type window

July 16, 2022 - Garbage Collection in JavaScript

July 16, 2022 - JavaScript Adapter Pattern

March 26, 2021 - Arrow function limitations in JavaScript

March 16, 2021 - Equality, Sort, Range - MongoDB index creation