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Milli Micro Nano Pico
With electronics and time measurements, you will find those terms used often: milli, micro, nano, pico. What do they mean?
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Non-printable ASCII characters list
A table containing all the non-printable ASCII characters
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Printable ASCII characters list
A table containing all the printable ASCII characters
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The Arduino Programming Language
How can you write programs for your Arduino board? Arduino, natively, supports a language that we call the Arduino Programming Language, or Arduino Language.
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The Arduino Uno WiFi rev 2 board
The Arduino Uno is a microcontroller board. It is currently the reference version of Arduino, and the latest version of an official Arduino device is the Arduino Uno WiFi rev 2.
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The Arduino Uno rev 3 board
This is the reference Arduino version for prototyping, as lots and lots of tutorials use this version of Arduino as their reference board.
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An introduction to Arduino
An overview of the Arduino electronics platform
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Coding is an art
Coding is an art, a creative craft, a joyful thing
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How to block distractions using uBlock Origin
A trick I learned to block distractions using uBlock Origin
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How to send the authorization header using Axios
Learn how to send the authorization header using Axios
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How to fix the xcrun invalid active developer path error in macOS
Quickly solve this annoying problem with the command line
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MySQL User Permissions
A quick introduction at User Permissions in a MySQL Database
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SQLite User Permissions
A quick introduction to user permissions in SQLite
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Converting Numbers from Decimal to Binary
How to quickly convert a number expressed in the Decimal Number System to the Binary Number System
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The Binary Number System
Introduction to the Binary Number System
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Write what you don't know
Some thoughts on writing about things you don't know (yet)
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The GPL License
A quick overview of the GPL License
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The Decimal Number System
Introduction to the Decimal Number System
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Finite State Machines
A quick overview of what State Machines are, with simple examples
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Postgres vs MySQL, a comparison
A quick comparison between PostgreSQL and MySQL
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How to start a blog using Hugo
A detailed tutorial to start a new blog using Hugo from zero to deployment
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Creating a user on MySQL
A quick step by step guide at how to create a user on MySQL
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How to install MySQL on macOS
Step by step instructions to install MySQL on macOS using Homebrew
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How to list tables in the current database using Postgres
A quick explanation of how to list tables in the current database inside the `psql` tool in PostgreSQL, or using SQL
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How to list all databases using Postgres
A quick explanation of how to list all databases inside the `psql` tool in PostgreSQL, or using SQL
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How to switch database using Postgres
A quick explanation of how to switch between databases inside the `psql` tool in PostgreSQL
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How to list all users in Postgres
Find out how to get a list of all the users present in a Postgres database, and their permissions
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This decade in JavaScript
Looking back at the last decade in JavaScript / Web, it's been a wild ride.
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Postgres User Permissions
In this tutorial I will explain how to managing users and permissions in Postgres.
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Introduction to Postgres
A high level overview of the PostgreSQL database
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How to install SQLite on macOS
In this tutorial I want to explain what you need to do to install SQLite.
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A practical guide to Homebrew
An introduction to the popular Homebrew package manager
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Do you always need a database for your app?
Some thoughts on the need of a database. Maybe you need it, maybe not.
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How to install Postgres on macOS
Instructions for installing the Postgres DBMS
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Introduction to SQL
SQL (Structured Query Language) is a language we use to interact with a Data Base Management System (DBMS).
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What is a Database? And a DBMS?
The main properties of a database and of a DBMS.
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Relational Databases
Relational Databases are the software implementation of the concepts expressed by the theory introduced by the Relational Model.
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Relational Algebra
When working with the relational model, we have 2 groups of operations we can use. One of them is relational algebra.
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The Relational Model
The Relational Model is the most popular of the logic data models listed in the Data Models post, and it's at the basis of SQL databases.
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Introduction to the ER Data Model
A simple but comprehensive overview of the entity-relationship data model
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Data models
Data Models define how we give a structure to data, and how data is connected to other data.
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Information systems, data and information
The modern world is completely centered around information and data. What's the difference?
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How to disable an ESLint rule
A quick tutorial on how to disable an ESLint rule
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How to read a CSV file with Node.js
A quick tutorial to read data from a CSV file using Node.js
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How to write a CSV file with Node.js
A quick tutorial to write an array of data to a CSV file using Node.js
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How to make a page editable in the browser
There is a special and pretty secret mode in browsers, called design mode.
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What are peer dependencies in a Node module?
A simple explanation of the peerDependencies field in the package.json file
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What are good CSS Breakpoint values for Responsive Design?
The optimal CSS breakpoint values I use in my projects
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How to flatten an array in JavaScript
A practical guide to flattening JavaScript arrays
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JavaScript Nullish Coalescing
An introduction to this new feature of JavaScript: nullish coalescing
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You should be the worst developer in your team
Some thoughts on your skill level compared to the people you work with
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How to fix the `dangerouslySetInnerHTML` did not match error in React
Find out how I solved the error "`dangerouslySetInnerHTML` did not match", in a React application
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How to get cookies server-side in a Next.js app
Accessing cookies while server-side rendering in Next.js can be harder than you think. Here's how I solved it.
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How to become a Full Stack Developer
A step by step guide to become a Full Stack Developer
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How to render HTML in React
Find out how to render an HTML string in the DOM without escaping, using React
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How to replace white space inside a string in JavaScript
Find out how to use a regex to replace all white space inside a string using JavaScript
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How I prototype a Web Page
A quick look at a simple workflow I use to prototype a web page
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How I fixed the trailing slash in Netlify rewrites
Netlify has this great feature, rewrites, that allow me to create a number of duplicate pages. But there's a catch.
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How to debug a React application
Some tools you can use to debug your React app when you run into problems
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How to use Next.js API Routes
Learn this powerful technique provided by Next.js to create an API endpoint within a Next.js app
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How to use the Next.js Router
Learn how to use the `next/router` package to control routes in Next.js
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The Next.js App Bundles
How Next.js separates your app code into different bundles, and what do they contain
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The icons added by Next.js to your app
Learn what the icons generated by Next.js in development mode mean
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Adding a wrapper component to your Next.js app
How to use a wrapper component and add a common sidebar or header to it
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Lazy loading modules in Next.js
How to lazy load modules in your Next.js app
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How to analyze the Next.js app bundles
Learn more about what's in your Next.js app bundles
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Deploying a Next.js app in production
How to generate the production version of your Next.js app
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Next.js: run code only on the server side or client side in Next.js
How to write code that's only executed on one side of your stack: frontend or backend
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Deploying a Next.js application on Now
How to use Now to easily and seamlessly deploy your Next.js app
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Next.js: populate the head tag with custom tags
How to customize the `head` tag of your Next.js app
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View source to confirm SSR is working in Next.js
How to check if SSR is working in your Next.js app
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Responsive YouTube Video Embeds
How to embed a YouTube video in your site and have it responsive, so it scales down on a mobile device
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How to learn React
Find out the optimal path to go from zero to being a React master
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Using the router to detect the active link in Next.js
How to using the Next.js Router to detect the active link and assign a class to it, so we can style it with CSS
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Prefetching content in Next.js
How prefetching works in a Next.js app
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Styling Next.js components using CSS
How to style React components in Next.js?
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Feed data to a Next.js component using getInitialProps
How to feed data to a Next.js component using getInitialProps
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Dynamic content in Next.js with the router
How to setup dynamic content in a Next.js site
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Linking two pages in Next.js using Link
How to link two or more pages in Next.js
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How to use the React Developer Tools
Learn this very useful tool we absolutely need to install when building a React application.
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JavaScript Optional Chaining
Learn this new, upcoming feature of JavaScript
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JavaScript Dynamic Imports
Learn this new, upcoming feature of JavaScript
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How to install Next.js
Step by step instructions to get started with Next.js
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Next.js vs Gatsby vs create-react-app
Next.js or Gatsby? Why choosing them over create-react-app? And which one?
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How to use top-level await in ES Modules
Learn how to use this new feature currently available in v8
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How to calculate the number of days between 2 dates in JavaScript
I had this problem: how do I calculate the number of days between 2 dates?
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I posted my password / API key on GitHub
Or GitLab, or any other public source control management platform. Now what?
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How to iterate over object properties in JavaScript
Here's a very common task: iterating over an object properties, in JavaScript
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How to format a date in JavaScript
Here's a very common task: how do you format a date with JavaScript?
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How to handle file uploads in Node.js
How to use Node.js and in particular Express to handle uploaded files
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How to upload a file using Fetch
How to upload files to the server using the Fetch API, explained in a simple way
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How to get both parsed body and raw body in Express
Find out how to get both parsed body and raw body in Express with `body-parser`
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How to use Firebase Firestore as your database
A tutorial to set up Firestore as a database, a very convenient solution to your storage problems!
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Responsive pre tags in CSS
I've had some problems with responsiveness in a few posts, on my blog. Turned out it was code snippets
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How to get the days between 2 dates in JavaScript
Given two JavaScript `Date` objects, how can I get a list of the days (expressed as Date objects, too) between those 2 dates?
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How to wait for 2 or more promises to resolve in JavaScript
Say you need to fire up 2 or more promises and wait for their result. How to do that?
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How to set an alias in a macOS or Linux shell
How to set an alias in a UNIX environment, including Bash, Zsh, Fish on both macOS and Linux
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JavaScript labeled statements
A tutorial about a very rarely used JavaScript feature: labeled statements
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Cross-component State Management in Svelte
How to work with Props, the Context API and Stores in Svelte to pass state around your application cross components
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Working with events in Svelte
Learn how to work with events in Svelte