Let’s make RegExes cool again — How would you react to seeing a RegEx like this: /^([0-9]{5}([\s]+|,)+)*([0-9]{5})$/ in a code review? Is it clear what this expression is trying to do, what it doesn’t do, or how to test it? Sadly, a typical RegEx is either so basic that it’s unhelpful, or so complicated that only…

Uh oh. It’s the 11th hour and you need a gift 🎁 for that special someone. Maybe they’re hard to buy for, or maybe you just forgot. Or, maybe, they’re interested in cryptocurrencies but don’t know how to start. Whatever your situation, you’ve come to the right tutorial. …

DynamoDB is an AWS NoSQL database service. It’s an easy, convenient, and reliable place to store data for a cloud-based ☁️ application. It’s particularly useful if your data doesn’t follow a strict format or schema. This makes it an interesting choice for a centralized store of application state. But, as…

It’s 2021 (or later, if this article stays relevant 🤞). Are you still using a 3rd party VPN? If so, it’s time to put it to rest. The popularity of HTTPS (indicated by that little 🔒 in the URL bar of your browser) and other secure browsing technologies has rendered…

JavaScript — do you love it? Hate it? Love to hate it? However you feel about it, JavaScript is wildly popular among web and app developers, both server-side and client-side. Despite this popularity, JavaScript has a humble history with many strange quirks along the way. …

JavaScript is the most ubiquitous programming language of the web. Nearly all web apps use it in the browser, and many use it server-side too with Node.js. Not to mention, it’s becoming increasingly popular for building native apps with tools like React Native, Flutter, and Electron. The problem? JavaScript syntax…

1. Functional Components with hooks Modern React code allows for defining components as functions parameterized by their props like below. This is more concise, maintainable, and readable than defining components as classes. Instead of setState() , each state variable gets its own setter from useState() . And, we can now trigger side effects like API…

With channels, it’s easy! — If you work in multiple languages, and one of them is Go, you might have wondered whether there’s a Go equivalent to the ever-popular async / await of other languages. For example, if you’ve programmed with JavaScript, Python, or another modern language recently, you’ve probably seen async and await used…

Long live channels! — I’m fairly new to programming in Go, but I’ve done my fair share of systems programming in other languages like C and C++. So, I’m accustomed to the old ways of handling concurrency and preventing race conditions. Namely, I expected Mutexes (mutual exclusions, i.e. …