A rather geeky/technical weblog, est. 2001, by Bramus
Kent C. Dodds: If you’re experiencing React performance issues, try this: “Lift” the expensive component to a parent where it will be rendered less often. Then pass the expensive component down as a prop. You may find doing so solves your performance problem without needing to spread React.memo all over you codebase like a giant …
Continue reading “One simple trick to optimize React re-renders”
Mathias Hansen, co-founder of Geocodio, on how they analyze their API response times: For the longest time, we focused on average response times. It is a quick and simple metric that you can quickly break down by API endpoint and time window. […] While measuring average response time have their place they can also be …
I’m currently in Antwerp for the first edition of Full Stack Europe, “The conference for the whole team”. Earlier this week I guided a workshop “React from Scratch”. After a small Lightning Talk yesterday on “JavaScript Yellow”, I today did a full talk named “ESNext: Proposals to look forward to” With the yearly ECMAScript releases …
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Display macOS Dock in Touch Bar. It’s free and open source! Not that I’d use it (I always use the “Expanded Control Strip” to make the Touch Bar show the “regular” keys), but I found this one quite interesting and it looks really cute. Installation possible per brew cask: brew cask install pock You can …
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A long time ago (2012!), Lea Verou shared a way on how to add scrolling shadows to containers that needs scrolling. Using those shadows in a scroll container is a great UX thing, as they visually tell the user that the content is scrollable. Her code however, only worked with containers that scroll vertically. Based …
Continue reading “Pure CSS Scroll Shadows (Vertical + Horizontal)”
jsonbox.io lets you store, read & modify JSON data over HTTP APIs for free. Copy the URL below and start sending HTTP requests to play around with your data store. Oh, this will come in handy for Workshops and quick Proof Of Concepts: curl -X POST ‘https://jsonbox.io/demobox_6d9e326c183fde7b’ \ -H ‘content-type: application/json’ \ -d ‘{“name”: “Jon …
Amazon AWS has offered a Serverless Image Handler for a while that allows you to spin up an AWS Lambda function to create your own private little image transform service that is inexpensive, fast, and is fronted by the CloudFront content delivery network (CDN). Whenever an image is uploaded to the bucket, a Lambda function …
Continue reading “Using AWS’ “Serverless Image Handler” to roll your own Image Transform Service”
webpack-merge-and-include-globally
One of the projects that I’m working on is quite reliant on jQuery and Bootstrap. As we’re introducing new features (such as a few React-based components, and Stylus for CSS) in said project, we’ve also introduced Webpack into it. Now, we don’t want to run jQuery nor Bootstrap through Babel (using Webpack), but we want …
The Web Perception Toolkit is an open-source library that provides the tools for you to add visual search to your website. The toolkit works by taking a stream from the device camera, and passing it through a set of detectors. Any markers or targets that are identified by the detectors are mapped to structured data …
Continue reading “Visually Search using your Phone’s Camera with The Web Perception Toolkit”
Jeremy recently implemented “Dark Mode” on his site. Tanks to CSS Custom Properties the implementation is pretty straightforward (also see my writeup here). But of course, Jeremy added some extra details that make the difference: In Dark Mode images are toned down to make ‘m blend in better, as detailed by Melanie Richards: @media (prefers-color-scheme: …