programming

A collection of 73 posts

elixir

Expressive design in Elixir with polymorphic protocols

In this article Emilio told us how to achieve an elegant and expressive desing in Elixir with polymorphic protocols.

experience

Moving from web to mobile

Xime tell us about the main differences she notice when moving from web app to a mobile app development.

best practices

Dealing with emergencies: some lessons learned

What to do and, above all, what not to do when a system crashes? Some ideas to get through this experience as well as possible and learn from the process.

kotlin

How to replace Lombok @Generated with a custom annotation for JaCoCo code coverage reports

Maybe it is Monday and you are pairing to catch up while drinking your morning coffee. When you randomly open the project dependencies file and start wondering why Lombok is there. In this post Guille tell us how to get rid of Lombok!

experience Featured

Documenting event-driven APIs with AsyncAPI

In this post Mauro tells us about AsyncApi: a tool for documenting Event-Driven architectures. Follow this tutorial to set it up!

react Featured

How (and why) to use useEffect's cleanup - Intervals

Using setInterval with useEffect can be confusing. Often they will overlap, or use stale data. We can prevent this by properly clearing the intervals inside useEffect's cleanup function.

best practices

IAR: a mnemonic for a clean controller design

¿How do you design HTTP controllers? ¿How do you make sure responsibilities are correctly assigned? ¿How do you reduce maintenance issues? I'll introduce you to three letters that might help you remember the essentials of every controller…

best practices

Obvious Programming

A technique to know how much refactoring you need on a piece of code. Refactor your code until it looks obvious to you and your team

tdd

Fears while writing code for the first time

Fear is an unpleasant feeling, a paralyzer. It doesn’t allow us to move forward. That's why we as humans need to identify when we are in fear and find ways to manage it in the best way. Believe it or not, writing code requires a lot of courage.

desarrollo de software Featured

Croquet

Croquet.io es una tecnología de sincronización de eventos, ideada para crear software colaborativo y en tiempo real. Actualmente el proyecto se enfoca en una librería de javascript (que se lanzó en septiembre de 2021). Pero previamente hubo versiones en Smalltalk.

diseño grafico

Tipografía & CSS #1: Anatomía del cuerpo tipográfico, también conocido como font-size

Te invito a conocer algunos conceptos del diseño tipográfico y adentrarnos en los atributos CSS que los codifican.

scripts

Escribí tus scripts ejecutables en cualquier lenguaje

¿No te llevás bien con bash? Aprendé como escribir tus propios scripts en tu lenguaje favorito.

haskell

Conferer, a configuration library for Haskell

Conferer is a library that helps you configure your Haskell applications in an ergonomic way.

css

Style Your CSS With Sass!

Nowadays, CSS is a complex toolbox that not all web developers are willing to embrace (even though it’s awesome).  And we all know that any web app can quickly be overwhelmed with styles and classes, making it even harder to keep track of what selectors are overriding what styles,

best practices

Clean Code Cleanups

I’ll walk you through different stages of code cleanup, and things to have in mind to make it in an efficient way, based on my experience.

machine learning

Machine Learning for everybody 2: Back to machine school

Previously, on “Machine Learning for everybody”, we talked about what machine learning is and why it’s nice to have. In this episode we’ll ramble on about how a computer can learn things, or rather how you may teach them.

json

Log Custom JSON with Log4J2

This post is the outcome of my own experience when trying to log JSON objects on a Spring boot Java app using Log4J2. We find it really hard to accomplish that since we couldn't find proper documentation. So, hopefully this post will help if you ever have to deal with such situation.

node

How do streams work in Node.js?

What happens when I want to read a very big file in Node.js? Should I read the full file at once, loading it all to memory? And if I do it, will it cause performance issues on my program?Let me show you how we can use streams to improve performance on your project.

development

Nuestra Señora Del Upgrade – Una fábula sobre código

–Señora mía, necesito tu favor –rezaba la función–. Mi sistema anda mal. Se cae todo el tiempo. Cada tanto nos visita algún programador, y se ve perdido en nuestro laberinto de confusión. ¿Qué se puede hacer? –Hija mía –dijo una voz antigua–. No estás sola. Solo estás confundida.

performance

Performance in web-apps: the solutions

At the very end of this saga we want to close it talking about actual solutions we can apply to improve the performance of your web-apps! Have you ever tried one of these?

performance

Performance in web-apps: the results

Now that we know the tools to measure our web page performance, what do we have to look at? What do all these numbers mean? Fear no more! Let's take a look!

performance

Performance in web-apps: the tools

One does not simply choose a tool to measure your performance in web apps. Here we have a list of tools and opinions about them! Do you have your own list?

performance

Performance in web-apps: the objective

Which is the goal in the performance race? Maybe you need to focus on perceived performance instead. Do you know your TTFB? Let's talk about all of it in the second post of the saga: performance in web apps!

performance

Performance in web-apps: the basic

Why is it a good idea to think about performance when building web-apps? Read on and find out!

aws

Writing Object-Oriented Typescript Code for AWS Lambda

It’s been a couple months since I entered the world of AWS Lambda. I condensed my little experience in this tutorial post for all of you not familiar with it.