Alexandre Calaça's Blog

Creating Bulletproof Validations in Ruby on Rails with Custom Validators [Part III]

Implementation

May 12, 20237 min read

Introduction to React Props

Components Introduction In order to truly understand props in React, we first need to be clear on what components are. A component is a reusable piece of the user interface that encapsulates structure, styling, and behavior. Instead of repeating the ...

Oct 4, 20254 min read

From Github Codespaces to Repository: Step-by-Step Setup

Introduction Context By default, Codespace is using the GITHUB_TOKEN env var (the “Codespaces token”), which can’t create repos. It’s necessary to authenticate gh with a token/account that has the right scopes, or create the repo on the web first. Ob...

Sep 28, 20252 min read

How to create a Git commit without a message?

Solution Here it is: git commit --allow-empty-message -m "" Explanation To create a Git commit without a message, or with an empty message, you can use the --allow-empty-message flag with the git commit command. git commit --allow-empty-message -m "...

Sep 25, 20251 min read

Step-by-Step Guide to Forcefully Remove and Recreate Docker Containers

Steps Cleanup phase This phase’s goal is to removes existing containers, volumes, networks and images Stop and remove volumes docker compose down --volumes --remove-orphans The previous command stops and removes containers, networks, and default volu...

Sep 12, 20252 min read

A Complete Guide to Uninstalling Docker completely on Pop!_OS and Ubuntu-based Systems

Steps Stop the service It’s not mandatory, but before uninstalling, it's a good practice to stop any running Docker services. sudo systemctl stop docker Remove docker packages It’s used to completely and forcefully remove a list of specified packag...

Sep 12, 20252 min read

Introduction to functions in Javascript

Functions are one of the most important concepts in JavaScript. They allow us to organize code, avoid repetition, and make programs easier to maintain. Introduction What’s a Function? A function is a block of code designed to perform a specific task...

Sep 3, 20253 min read

How to install Flameshot app on Pop!_OS?

Introduction Flameshot Flameshop is a powerful yet simple to use screenshot software. Features Customizable appearance; Easy to use. In-app screenshot editing. DBus interface. More features Pre-installation Check your OS (optional) This ste...

Aug 1, 20252 min read

Step-by-Step Guide: Installing Amazon WorkSpaces on Pop!_OS

Solution Check your OS (optional) This step is just to make sure you have Pop!_OS installed. uname -a hostnamectl lsb_release -a cat /etc/os-release Output Update packages info sudo apt-get update Running sudo apt-get update is an important step ...

Jul 17, 20251 min read

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