A rather geeky/technical weblog, est. 2001, by Bramus
To crop uploaded images, Twitter doesn’t simply cut them off starting from the center. After first having used Face Detection, they – in 2018 already – switched to AI to cleverly crop uploaded images. Previously, we used face detection to focus the view on the most prominent face we could find. While this is not …
Continue reading “Cleverly Cropping Images on Twitter using AI”
gap property
The gap property for Flexbox about to land in Chromium 85. It allows you to define the size of the gutters between Grid/Flexbox children. CSS Grid brought a delightful spacing feature called grid-gap, which quickly became a popular way to put space into layouts. It was easy to fall in love with because it took …
Continue reading “Spacing grid/flexbox items in CSS with the gap property”
Nice pen by Aaron Iker: It combines CSS Custom Properties, CSS Transitions, and SVG Animations using stroke-dashoffset/stroke-dasharray. The reason that it works with text that spans multiple lines is because of the (inline) span that’s being used inside the link.
The folks at Percona have benchmarked TCP/IP vs. Unix Connections to a local MySQL server. When connecting to a local MySQL instance, you have two commonly used methods: use TCP/IP protocol to connect to local address – localhost or 127.0.0.1 – or use Unix Domain Socket. If you have a choice (if your application supports …
Continue reading “Need to Connect to a Local MySQL Server? Use Unix Domain Socket!”
To use Tailwind – or any prebuilt CSS library/framework for that matter – in a React app you can simply import its generated CSS file and use the classes it exposes: import ‘../tailwind.generated.css’; // … const Alert = ({ title = '', message }) => ( <div class="bg-red-100 border border-red-400 text-red-700 px-4 py-3 rounded relative" …
Continue reading “Use Tailwind classes within any CSS-in-JS library with Twin”
React.memo()
I know I’ve posted a similar article before but this is a pitfall I commonly see and therefore it can’t be repeated enough. React internally already optimizes the performance quite a bit without having to explicitly optimize for performance. React.memo can help you to optimize the number of renders of your React components even further. …
Continue reading “React Performance Optimization with React.memo()“
The Facebook Engineering Team on how they’ve built the new Facebook.com – a version which I’ve been able to try for nearly two months by now. Throughout the process, we anchored our work around two technical mantras: As little as possible, as early as possible. We should deliver only the resources we need, and we …
Continue reading “Rebuilding our tech stack for the new Facebook.com”
Photo by Steve Johnson on Unsplash A map is one of the most frequently used data structures in daily programming. It keeps key-value pairs that can easily be accessed by their keys. In JavaScript, it is quite convenient to just use a plain object for that purpose. But there is a built-in data structure in …
Continue reading “Stop Using Objects as Hash Maps in JavaScript”
An article that’s been making rounds on Twitter today is Second-guessing the modern web: There is a sweet spot of React: in moderately interactive interfaces. Complex forms that require immediate feedback, UIs that need to move around and react instantly. That’s where it excels. But there’s a lot on either side of that sweet spot. …