Published in ITNEXT·Nov 5, 2022NFTs, explained by a software developerWhat you need to know (as a developer) to create an NFT — In this article, you will understand what an NFT is and how we developers can create one ( or maybe 10,000). An NFT is a transaction recorded on a blockchain that attests the ownership of a unique object, linked via metadata to some assets, usually images or video. Okay, this…Blockchain8 min readBlockchain8 min read
Published in The Startup·Nov 8, 2019React Global State with Context and HooksA solution to manage the global state of a React application using hooks and Context API. — Great! You have learned React Hooks and you started using them, and now you are wondering which is the best way to share the state between Components: Redux, Saga, Thunk, Unstate, Mobx, Apollo, Relay? Honestly, I think all these libs are great, but they all have one thing in common…React7 min readReact7 min read
Published in ITNEXT·Aug 30, 2019React Push notifications (with hooks)How Push notifications work and how to in React — This article is a guide to create Push notifications with React using Hooks. By the end of it, you will create a working Push notifications system. In the meantime, you can play with the demo or browse the source code of the final result. I recently wrote an article about…JavaScript10 min readJavaScript10 min read
Published in ITNEXT·Aug 27, 2019Push Notifications in JavaScript? Yes, you can!With working code samples and easy explanations. — TLDR: You suck, you just want the code. You can see a live demo of what we are going to create here: Web Push Notifications Ask user permission this will create an endpoint that has to be sent to the push server Create notification…push-notifications-demo.netlify.app You can download and run locally the demo, the source code with full instructions is here:JavaScript10 min readJavaScript10 min read
Published in ITNEXT·Feb 10, 2019Manage React state without reduxHow to use React Context API in an easier and prettier way. — Disclaimer: I use Redux with React in production and I’m pretty happy with it. TL;DR; You suck! You just want the code but, if you’re in a hurry, download the repo or install the npm library in your project. By the end of this article, you’ll learn how to read, write…Programming10 min readProgramming10 min read
Published in ITNEXT·Aug 22, 2018An OAuth 2.0 introduction for beginnersHow OAuth 2.0 works and how to choose the right flow — TL;DR; You suck! You just want the code. However, at the end of the article, you will find a questionnaire to help you choose the flow you need. This article doesn’t want to be the final guide to OAuth 2, but an introduction to the flows that this framework is composed…Oauth11 min readOauth11 min read
Published in ITNEXT·Jul 23, 2018React SVG radar chartThere are a lot of libraries around, to create charts, but many of them are very heavy. Let’s see how we can build a radar chart with React. The image format I choose is the SVG, the main reasons are: Resolution: SVG images are vectors, made by shapes and fills…SVG8 min readSVG8 min read
Jul 3, 2018How to get a job at AmazonYou will read some details about the Amazon hiring process. — Some time ago a recruiter by Amazon contacted me, to schedule an interview. This is the story of the hiring process. Disclaimer My English is not perfect, so please tell me if you find any grammar errors. First of all, the hiring process takes a long time. I had the first…Interview11 min readInterview11 min read
Feb 10, 2018Protect REST API after social login with Node.js and Express.jsTL;DR Do want to protect your REST API? Use Json Web Tokens. Servers issue a token, and the clients must use it to access protected resources. It’s easy to issue a token after a username/password login, but… How can you issue a user token when users log in from social networks…Nodejs7 min readNodejs7 min read
