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The Miners

Codeminer42’s Engineering Blog

Category: Beginner

JavaScript Under the Hood #1: Classes Understanding how classes work in JavaScript

JavaScript Under the Hood #1: Classes

Understanding how classes work in JavaScript

Marcio Flavioby Marcio FlavioApril 6, 2023April 25, 2023

If you’re a programmer coming to JavaScript from other languages, you may have heard that JavaScript has "fake" classes. In this article, we’ll explore how …

A/B Testing – Slightly different but the same

A/B Testing – Slightly different but the same

Alencar Oliveiraby Alencar Oliveira Isaias Carvalhoand Isaias CarvalhoMarch 15, 2023March 15, 2023

Remember when you went to the grocery store, and the employees had placed everything in a different layout since your last visit? You’ve just been …

Unravel the magic of programming

Unravel the magic of programming

Talysson de Oliveiraby Talysson de OliveiraFebruary 6, 2023February 7, 2023

Are you the kind of person that likes magic? If you’re not, try to remember why other people like it, and bear with me. There …

Polymorphic Associations with Ruby on Rails

Polymorphic Associations with Ruby on Rails

gabriel.mullerby gabriel.mullerNovember 3, 2022November 3, 2022

Although not usually the first option for many, polymorphic associations are perfect for when you need to connect the same type of model to multiple …

SQL 101 – The Basics

SQL 101 – The Basics

Antonio Paulinoby Antonio Paulino Heitor Cardozoand Heitor CardozoOctober 19, 2022October 19, 2022

Introduction First things first, a little bit of history for us to understand what is SQL. Structured Query Language (SQL) is a domain-specific language used …

Blockchain: What are you Token about?

Blockchain: What are you Token about?

douglas.marquesby douglas.marquesSeptember 28, 2022September 28, 2022

Tokens, NFT, ERC, EIP… these terms have been in our vocabulary for quite a while. Many people are excited about how innovative they are and …

CodeTips#6: Using the Node.js debugger

CodeTips#6: Using the Node.js debugger

Paulo Diovaniby Paulo DiovaniSeptember 21, 2022September 19, 2022

The usual way to debug a Node.js application is to simply use the console module to inspect variables or objects, which is fast enough to …

CodeTips#5: Debugging in Frontend Some tips and tools to debug your JavaScript code

CodeTips#5: Debugging in Frontend

Some tips and tools to debug your JavaScript code

Felipe Nolletoby Felipe Nolleto Paulo Diovaniand Paulo DiovaniSeptember 14, 2022September 16, 2022

Hello guys! When we are investigating errors or resolving a bug in our app, we all know the struggle of finding and fixing it. In …

A stylish guide to styled components #1

A stylish guide to styled components #1

Jonas Teixeiraby Jonas TeixeiraSeptember 7, 2022September 1, 2022

The relationship between developers and CSS is kind of weird. By the time we can have a good time making a drawing or some impressive …

CodeTips#4: Debugging Ruby applications

CodeTips#4: Debugging Ruby applications

Paty Bastosby Paty BastosAugust 24, 2022September 16, 2022

When our code is behaving unexpectedly, our first attempt is usually trying to understand why it happened, but just thinking about it might not be …

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